mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-15 09:06:52 +07:00
c9b60788fc
This patch add to do sanity check with below field: - cp_pack_total_block_count - blkaddr of data/node - extent info - Overview BUG() in verify_block_addr() when writing to a corrupted f2fs image - Reproduce (4.18 upstream kernel) - POC (poc.c) static void activity(char *mpoint) { char *foo_bar_baz; int err; static int buf[8192]; memset(buf, 0, sizeof(buf)); err = asprintf(&foo_bar_baz, "%s/foo/bar/baz", mpoint); int fd = open(foo_bar_baz, O_RDWR | O_TRUNC, 0777); if (fd >= 0) { write(fd, (char *)buf, sizeof(buf)); fdatasync(fd); close(fd); } } int main(int argc, char *argv[]) { activity(argv[1]); return 0; } - Kernel message [ 689.349473] F2FS-fs (loop0): Mounted with checkpoint version = 3 [ 699.728662] WARNING: CPU: 0 PID: 1309 at fs/f2fs/segment.c:2860 f2fs_inplace_write_data+0x232/0x240 [ 699.728670] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_pcm snd_timer snd mac_hid i2c_piix4 soundcore ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx raid1 raid0 multipath linear 8139too crct10dif_pclmul crc32_pclmul qxl drm_kms_helper syscopyarea aesni_intel sysfillrect sysimgblt fb_sys_fops ttm drm aes_x86_64 crypto_simd cryptd 8139cp glue_helper mii pata_acpi floppy [ 699.729056] CPU: 0 PID: 1309 Comm: a.out Not tainted 4.18.0-rc1+ #4 [ 699.729064] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014 [ 699.729074] RIP: 0010:f2fs_inplace_write_data+0x232/0x240 [ 699.729076] Code: ff e9 cf fe ff ff 49 8d 7d 10 e8 39 45 ad ff 4d 8b 7d 10 be 04 00 00 00 49 8d 7f 48 e8 07 49 ad ff 45 8b 7f 48 e9 fb fe ff ff <0f> 0b f0 41 80 4d 48 04 e9 65 fe ff ff 90 66 66 66 66 90 55 48 8d [ 699.729130] RSP: 0018:ffff8801f43af568 EFLAGS: 00010202 [ 699.729139] RAX: 000000000000003f RBX: ffff8801f43af7b8 RCX: ffffffffb88c9113 [ 699.729142] RDX: 0000000000000003 RSI: dffffc0000000000 RDI: ffff8802024e5540 [ 699.729144] RBP: ffff8801f43af590 R08: 0000000000000009 R09: ffffffffffffffe8 [ 699.729147] R10: 0000000000000001 R11: ffffed0039b0596a R12: ffff8802024e5540 [ 699.729149] R13: ffff8801f0335500 R14: ffff8801e3e7a700 R15: ffff8801e1ee4450 [ 699.729154] FS: 00007f9bf97f5700(0000) GS:ffff8801f6e00000(0000) knlGS:0000000000000000 [ 699.729156] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 699.729159] CR2: 00007f9bf925d170 CR3: 00000001f0c34000 CR4: 00000000000006f0 [ 699.729171] Call Trace: [ 699.729192] f2fs_do_write_data_page+0x2e2/0xe00 [ 699.729203] ? f2fs_should_update_outplace+0xd0/0xd0 [ 699.729238] ? memcg_drain_all_list_lrus+0x280/0x280 [ 699.729269] ? __radix_tree_replace+0xa3/0x120 [ 699.729276] __write_data_page+0x5c7/0xe30 [ 699.729291] ? kasan_check_read+0x11/0x20 [ 699.729310] ? page_mapped+0x8a/0x110 [ 699.729321] ? page_mkclean+0xe9/0x160 [ 699.729327] ? f2fs_do_write_data_page+0xe00/0xe00 [ 699.729331] ? invalid_page_referenced_vma+0x130/0x130 [ 699.729345] ? clear_page_dirty_for_io+0x332/0x450 [ 699.729351] f2fs_write_cache_pages+0x4ca/0x860 [ 699.729358] ? __write_data_page+0xe30/0xe30 [ 699.729374] ? percpu_counter_add_batch+0x22/0xa0 [ 699.729380] ? kasan_check_write+0x14/0x20 [ 699.729391] ? _raw_spin_lock+0x17/0x40 [ 699.729403] ? f2fs_mark_inode_dirty_sync.part.18+0x16/0x30 [ 699.729413] ? iov_iter_advance+0x113/0x640 [ 699.729418] ? f2fs_write_end+0x133/0x2e0 [ 699.729423] ? balance_dirty_pages_ratelimited+0x239/0x640 [ 699.729428] f2fs_write_data_pages+0x329/0x520 [ 699.729433] ? generic_perform_write+0x250/0x320 [ 699.729438] ? f2fs_write_cache_pages+0x860/0x860 [ 699.729454] ? current_time+0x110/0x110 [ 699.729459] ? f2fs_preallocate_blocks+0x1ef/0x370 [ 699.729464] do_writepages+0x37/0xb0 [ 699.729468] ? f2fs_write_cache_pages+0x860/0x860 [ 699.729472] ? do_writepages+0x37/0xb0 [ 699.729478] __filemap_fdatawrite_range+0x19a/0x1f0 [ 699.729483] ? delete_from_page_cache_batch+0x4e0/0x4e0 [ 699.729496] ? __vfs_write+0x2b2/0x410 [ 699.729501] file_write_and_wait_range+0x66/0xb0 [ 699.729506] f2fs_do_sync_file+0x1f9/0xd90 [ 699.729511] ? truncate_partial_data_page+0x290/0x290 [ 699.729521] ? __sb_end_write+0x30/0x50 [ 699.729526] ? vfs_write+0x20f/0x260 [ 699.729530] f2fs_sync_file+0x9a/0xb0 [ 699.729534] ? f2fs_do_sync_file+0xd90/0xd90 [ 699.729548] vfs_fsync_range+0x68/0x100 [ 699.729554] ? __fget_light+0xc9/0xe0 [ 699.729558] do_fsync+0x3d/0x70 [ 699.729562] __x64_sys_fdatasync+0x24/0x30 [ 699.729585] do_syscall_64+0x78/0x170 [ 699.729595] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 699.729613] RIP: 0033:0x7f9bf930d800 [ 699.729615] Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 49 bf 2c 00 00 75 10 b8 4b 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 be 78 01 00 48 89 04 24 [ 699.729668] RSP: 002b:00007ffee3606c68 EFLAGS: 00000246 ORIG_RAX: 000000000000004b [ 699.729673] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9bf930d800 [ 699.729675] RDX: 0000000000008000 RSI: 00000000006010a0 RDI: 0000000000000003 [ 699.729678] RBP: 00007ffee3606ca0 R08: 0000000001503010 R09: 0000000000000000 [ 699.729680] R10: 00000000000002e8 R11: 0000000000000246 R12: 0000000000400610 [ 699.729683] R13: 00007ffee3606da0 R14: 0000000000000000 R15: 0000000000000000 [ 699.729687] ---[ end trace 4ce02f25ff7d3df5 ]--- [ 699.729782] ------------[ cut here ]------------ [ 699.729785] kernel BUG at fs/f2fs/segment.h:654! [ 699.731055] invalid opcode: 0000 [#1] SMP KASAN PTI [ 699.732104] CPU: 0 PID: 1309 Comm: a.out Tainted: G W 4.18.0-rc1+ #4 [ 699.733684] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014 [ 699.735611] RIP: 0010:f2fs_submit_page_bio+0x29b/0x730 [ 699.736649] Code: 54 49 8d bd 18 04 00 00 e8 b2 59 af ff 41 8b 8d 18 04 00 00 8b 45 b8 41 d3 e6 44 01 f0 4c 8d 73 14 41 39 c7 0f 82 37 fe ff ff <0f> 0b 65 8b 05 2c 04 77 47 89 c0 48 0f a3 05 52 c1 d5 01 0f 92 c0 [ 699.740524] RSP: 0018:ffff8801f43af508 EFLAGS: 00010283 [ 699.741573] RAX: 0000000000000000 RBX: ffff8801f43af7b8 RCX: ffffffffb88a7cef [ 699.743006] RDX: 0000000000000007 RSI: dffffc0000000000 RDI: ffff8801e3e7a64c [ 699.744426] RBP: ffff8801f43af558 R08: ffffed003e066b55 R09: ffffed003e066b55 [ 699.745833] R10: 0000000000000001 R11: ffffed003e066b54 R12: ffffea0007876940 [ 699.747256] R13: ffff8801f0335500 R14: ffff8801e3e7a600 R15: 0000000000000001 [ 699.748683] FS: 00007f9bf97f5700(0000) GS:ffff8801f6e00000(0000) knlGS:0000000000000000 [ 699.750293] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 699.751462] CR2: 00007f9bf925d170 CR3: 00000001f0c34000 CR4: 00000000000006f0 [ 699.752874] Call Trace: [ 699.753386] ? f2fs_inplace_write_data+0x93/0x240 [ 699.754341] f2fs_inplace_write_data+0xd2/0x240 [ 699.755271] f2fs_do_write_data_page+0x2e2/0xe00 [ 699.756214] ? f2fs_should_update_outplace+0xd0/0xd0 [ 699.757215] ? memcg_drain_all_list_lrus+0x280/0x280 [ 699.758209] ? __radix_tree_replace+0xa3/0x120 [ 699.759164] __write_data_page+0x5c7/0xe30 [ 699.760002] ? kasan_check_read+0x11/0x20 [ 699.760823] ? page_mapped+0x8a/0x110 [ 699.761573] ? page_mkclean+0xe9/0x160 [ 699.762345] ? f2fs_do_write_data_page+0xe00/0xe00 [ 699.763332] ? invalid_page_referenced_vma+0x130/0x130 [ 699.764374] ? clear_page_dirty_for_io+0x332/0x450 [ 699.765347] f2fs_write_cache_pages+0x4ca/0x860 [ 699.766276] ? __write_data_page+0xe30/0xe30 [ 699.767161] ? percpu_counter_add_batch+0x22/0xa0 [ 699.768112] ? kasan_check_write+0x14/0x20 [ 699.768951] ? _raw_spin_lock+0x17/0x40 [ 699.769739] ? f2fs_mark_inode_dirty_sync.part.18+0x16/0x30 [ 699.770885] ? iov_iter_advance+0x113/0x640 [ 699.771743] ? f2fs_write_end+0x133/0x2e0 [ 699.772569] ? balance_dirty_pages_ratelimited+0x239/0x640 [ 699.773680] f2fs_write_data_pages+0x329/0x520 [ 699.774603] ? generic_perform_write+0x250/0x320 [ 699.775544] ? f2fs_write_cache_pages+0x860/0x860 [ 699.776510] ? current_time+0x110/0x110 [ 699.777299] ? f2fs_preallocate_blocks+0x1ef/0x370 [ 699.778279] do_writepages+0x37/0xb0 [ 699.779026] ? f2fs_write_cache_pages+0x860/0x860 [ 699.779978] ? do_writepages+0x37/0xb0 [ 699.780755] __filemap_fdatawrite_range+0x19a/0x1f0 [ 699.781746] ? delete_from_page_cache_batch+0x4e0/0x4e0 [ 699.782820] ? __vfs_write+0x2b2/0x410 [ 699.783597] file_write_and_wait_range+0x66/0xb0 [ 699.784540] f2fs_do_sync_file+0x1f9/0xd90 [ 699.785381] ? truncate_partial_data_page+0x290/0x290 [ 699.786415] ? __sb_end_write+0x30/0x50 [ 699.787204] ? vfs_write+0x20f/0x260 [ 699.787941] f2fs_sync_file+0x9a/0xb0 [ 699.788694] ? f2fs_do_sync_file+0xd90/0xd90 [ 699.789572] vfs_fsync_range+0x68/0x100 [ 699.790360] ? __fget_light+0xc9/0xe0 [ 699.791128] do_fsync+0x3d/0x70 [ 699.791779] __x64_sys_fdatasync+0x24/0x30 [ 699.792614] do_syscall_64+0x78/0x170 [ 699.793371] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 699.794406] RIP: 0033:0x7f9bf930d800 [ 699.795134] Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 49 bf 2c 00 00 75 10 b8 4b 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 be 78 01 00 48 89 04 24 [ 699.798960] RSP: 002b:00007ffee3606c68 EFLAGS: 00000246 ORIG_RAX: 000000000000004b [ 699.800483] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9bf930d800 [ 699.801923] RDX: 0000000000008000 RSI: 00000000006010a0 RDI: 0000000000000003 [ 699.803373] RBP: 00007ffee3606ca0 R08: 0000000001503010 R09: 0000000000000000 [ 699.804798] R10: 00000000000002e8 R11: 0000000000000246 R12: 0000000000400610 [ 699.806233] R13: 00007ffee3606da0 R14: 0000000000000000 R15: 0000000000000000 [ 699.807667] Modules linked in: snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_pcm snd_timer snd mac_hid i2c_piix4 soundcore ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx raid1 raid0 multipath linear 8139too crct10dif_pclmul crc32_pclmul qxl drm_kms_helper syscopyarea aesni_intel sysfillrect sysimgblt fb_sys_fops ttm drm aes_x86_64 crypto_simd cryptd 8139cp glue_helper mii pata_acpi floppy [ 699.817079] ---[ end trace 4ce02f25ff7d3df6 ]--- [ 699.818068] RIP: 0010:f2fs_submit_page_bio+0x29b/0x730 [ 699.819114] Code: 54 49 8d bd 18 04 00 00 e8 b2 59 af ff 41 8b 8d 18 04 00 00 8b 45 b8 41 d3 e6 44 01 f0 4c 8d 73 14 41 39 c7 0f 82 37 fe ff ff <0f> 0b 65 8b 05 2c 04 77 47 89 c0 48 0f a3 05 52 c1 d5 01 0f 92 c0 [ 699.822919] RSP: 0018:ffff8801f43af508 EFLAGS: 00010283 [ 699.823977] RAX: 0000000000000000 RBX: ffff8801f43af7b8 RCX: ffffffffb88a7cef [ 699.825436] RDX: 0000000000000007 RSI: dffffc0000000000 RDI: ffff8801e3e7a64c [ 699.826881] RBP: ffff8801f43af558 R08: ffffed003e066b55 R09: ffffed003e066b55 [ 699.828292] R10: 0000000000000001 R11: ffffed003e066b54 R12: ffffea0007876940 [ 699.829750] R13: ffff8801f0335500 R14: ffff8801e3e7a600 R15: 0000000000000001 [ 699.831192] FS: 00007f9bf97f5700(0000) GS:ffff8801f6e00000(0000) knlGS:0000000000000000 [ 699.832793] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 699.833981] CR2: 00007f9bf925d170 CR3: 00000001f0c34000 CR4: 00000000000006f0 [ 699.835556] ================================================================== [ 699.837029] BUG: KASAN: stack-out-of-bounds in update_stack_state+0x38c/0x3e0 [ 699.838462] Read of size 8 at addr ffff8801f43af970 by task a.out/1309 [ 699.840086] CPU: 0 PID: 1309 Comm: a.out Tainted: G D W 4.18.0-rc1+ #4 [ 699.841603] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014 [ 699.843475] Call Trace: [ 699.843982] dump_stack+0x7b/0xb5 [ 699.844661] print_address_description+0x70/0x290 [ 699.845607] kasan_report+0x291/0x390 [ 699.846351] ? update_stack_state+0x38c/0x3e0 [ 699.853831] __asan_load8+0x54/0x90 [ 699.854569] update_stack_state+0x38c/0x3e0 [ 699.855428] ? __read_once_size_nocheck.constprop.7+0x20/0x20 [ 699.856601] ? __save_stack_trace+0x5e/0x100 [ 699.857476] unwind_next_frame.part.5+0x18e/0x490 [ 699.858448] ? unwind_dump+0x290/0x290 [ 699.859217] ? clear_page_dirty_for_io+0x332/0x450 [ 699.860185] __unwind_start+0x106/0x190 [ 699.860974] __save_stack_trace+0x5e/0x100 [ 699.861808] ? __save_stack_trace+0x5e/0x100 [ 699.862691] ? unlink_anon_vmas+0xba/0x2c0 [ 699.863525] save_stack_trace+0x1f/0x30 [ 699.864312] save_stack+0x46/0xd0 [ 699.864993] ? __alloc_pages_slowpath+0x1420/0x1420 [ 699.865990] ? flush_tlb_mm_range+0x15e/0x220 [ 699.866889] ? kasan_check_write+0x14/0x20 [ 699.867724] ? __dec_node_state+0x92/0xb0 [ 699.868543] ? lock_page_memcg+0x85/0xf0 [ 699.869350] ? unlock_page_memcg+0x16/0x80 [ 699.870185] ? page_remove_rmap+0x198/0x520 [ 699.871048] ? mark_page_accessed+0x133/0x200 [ 699.871930] ? _cond_resched+0x1a/0x50 [ 699.872700] ? unmap_page_range+0xcd4/0xe50 [ 699.873551] ? rb_next+0x58/0x80 [ 699.874217] ? rb_next+0x58/0x80 [ 699.874895] __kasan_slab_free+0x13c/0x1a0 [ 699.875734] ? unlink_anon_vmas+0xba/0x2c0 [ 699.876563] kasan_slab_free+0xe/0x10 [ 699.877315] kmem_cache_free+0x89/0x1e0 [ 699.878095] unlink_anon_vmas+0xba/0x2c0 [ 699.878913] free_pgtables+0x101/0x1b0 [ 699.879677] exit_mmap+0x146/0x2a0 [ 699.880378] ? __ia32_sys_munmap+0x50/0x50 [ 699.881214] ? kasan_check_read+0x11/0x20 [ 699.882052] ? mm_update_next_owner+0x322/0x380 [ 699.882985] mmput+0x8b/0x1d0 [ 699.883602] do_exit+0x43a/0x1390 [ 699.884288] ? mm_update_next_owner+0x380/0x380 [ 699.885212] ? f2fs_sync_file+0x9a/0xb0 [ 699.885995] ? f2fs_do_sync_file+0xd90/0xd90 [ 699.886877] ? vfs_fsync_range+0x68/0x100 [ 699.887694] ? __fget_light+0xc9/0xe0 [ 699.888442] ? do_fsync+0x3d/0x70 [ 699.889118] ? __x64_sys_fdatasync+0x24/0x30 [ 699.889996] rewind_stack_do_exit+0x17/0x20 [ 699.890860] RIP: 0033:0x7f9bf930d800 [ 699.891585] Code: Bad RIP value. [ 699.892268] RSP: 002b:00007ffee3606c68 EFLAGS: 00000246 ORIG_RAX: 000000000000004b [ 699.893781] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9bf930d800 [ 699.895220] RDX: 0000000000008000 RSI: 00000000006010a0 RDI: 0000000000000003 [ 699.896643] RBP: 00007ffee3606ca0 R08: 0000000001503010 R09: 0000000000000000 [ 699.898069] R10: 00000000000002e8 R11: 0000000000000246 R12: 0000000000400610 [ 699.899505] R13: 00007ffee3606da0 R14: 0000000000000000 R15: 0000000000000000 [ 699.901241] The buggy address belongs to the page: [ 699.902215] page:ffffea0007d0ebc0 count:0 mapcount:0 mapping:0000000000000000 index:0x0 [ 699.903811] flags: 0x2ffff0000000000() [ 699.904585] raw: 02ffff0000000000 0000000000000000 ffffffff07d00101 0000000000000000 [ 699.906125] raw: 0000000000000000 0000000000240000 00000000ffffffff 0000000000000000 [ 699.907673] page dumped because: kasan: bad access detected [ 699.909108] Memory state around the buggy address: [ 699.910077] ffff8801f43af800: 00 f1 f1 f1 f1 00 f4 f4 f4 f3 f3 f3 f3 00 00 00 [ 699.911528] ffff8801f43af880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 699.912953] >ffff8801f43af900: 00 00 00 00 00 00 00 00 f1 01 f4 f4 f4 f2 f2 f2 [ 699.914392] ^ [ 699.915758] ffff8801f43af980: f2 00 f4 f4 00 00 00 00 f2 00 00 00 00 00 00 00 [ 699.917193] ffff8801f43afa00: 00 00 00 00 00 00 00 00 00 f3 f3 f3 00 00 00 00 [ 699.918634] ================================================================== - Location https://elixir.bootlin.com/linux/v4.18-rc1/source/fs/f2fs/segment.h#L644 Reported-by Wen Xu <wen.xu@gatech.edu> Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2952 lines
70 KiB
C
2952 lines
70 KiB
C
/*
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* fs/f2fs/node.c
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*
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* Copyright (c) 2012 Samsung Electronics Co., Ltd.
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* http://www.samsung.com/
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/fs.h>
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#include <linux/f2fs_fs.h>
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#include <linux/mpage.h>
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#include <linux/backing-dev.h>
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#include <linux/blkdev.h>
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#include <linux/pagevec.h>
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#include <linux/swap.h>
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#include "f2fs.h"
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#include "node.h"
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#include "segment.h"
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#include "xattr.h"
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#include "trace.h"
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#include <trace/events/f2fs.h>
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#define on_f2fs_build_free_nids(nmi) mutex_is_locked(&(nm_i)->build_lock)
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static struct kmem_cache *nat_entry_slab;
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static struct kmem_cache *free_nid_slab;
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static struct kmem_cache *nat_entry_set_slab;
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/*
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* Check whether the given nid is within node id range.
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*/
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int f2fs_check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
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{
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if (unlikely(nid < F2FS_ROOT_INO(sbi) || nid >= NM_I(sbi)->max_nid)) {
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set_sbi_flag(sbi, SBI_NEED_FSCK);
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f2fs_msg(sbi->sb, KERN_WARNING,
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"%s: out-of-range nid=%x, run fsck to fix.",
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__func__, nid);
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return -EINVAL;
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}
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return 0;
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}
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bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type)
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{
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struct f2fs_nm_info *nm_i = NM_I(sbi);
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struct sysinfo val;
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unsigned long avail_ram;
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unsigned long mem_size = 0;
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bool res = false;
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si_meminfo(&val);
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/* only uses low memory */
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avail_ram = val.totalram - val.totalhigh;
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/*
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* give 25%, 25%, 50%, 50%, 50% memory for each components respectively
|
|
*/
|
|
if (type == FREE_NIDS) {
|
|
mem_size = (nm_i->nid_cnt[FREE_NID] *
|
|
sizeof(struct free_nid)) >> PAGE_SHIFT;
|
|
res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2);
|
|
} else if (type == NAT_ENTRIES) {
|
|
mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >>
|
|
PAGE_SHIFT;
|
|
res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2);
|
|
if (excess_cached_nats(sbi))
|
|
res = false;
|
|
} else if (type == DIRTY_DENTS) {
|
|
if (sbi->sb->s_bdi->wb.dirty_exceeded)
|
|
return false;
|
|
mem_size = get_pages(sbi, F2FS_DIRTY_DENTS);
|
|
res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1);
|
|
} else if (type == INO_ENTRIES) {
|
|
int i;
|
|
|
|
for (i = 0; i < MAX_INO_ENTRY; i++)
|
|
mem_size += sbi->im[i].ino_num *
|
|
sizeof(struct ino_entry);
|
|
mem_size >>= PAGE_SHIFT;
|
|
res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1);
|
|
} else if (type == EXTENT_CACHE) {
|
|
mem_size = (atomic_read(&sbi->total_ext_tree) *
|
|
sizeof(struct extent_tree) +
|
|
atomic_read(&sbi->total_ext_node) *
|
|
sizeof(struct extent_node)) >> PAGE_SHIFT;
|
|
res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1);
|
|
} else if (type == INMEM_PAGES) {
|
|
/* it allows 20% / total_ram for inmemory pages */
|
|
mem_size = get_pages(sbi, F2FS_INMEM_PAGES);
|
|
res = mem_size < (val.totalram / 5);
|
|
} else {
|
|
if (!sbi->sb->s_bdi->wb.dirty_exceeded)
|
|
return true;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static void clear_node_page_dirty(struct page *page)
|
|
{
|
|
if (PageDirty(page)) {
|
|
f2fs_clear_radix_tree_dirty_tag(page);
|
|
clear_page_dirty_for_io(page);
|
|
dec_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES);
|
|
}
|
|
ClearPageUptodate(page);
|
|
}
|
|
|
|
static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid)
|
|
{
|
|
pgoff_t index = current_nat_addr(sbi, nid);
|
|
return f2fs_get_meta_page(sbi, index);
|
|
}
|
|
|
|
static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid)
|
|
{
|
|
struct page *src_page;
|
|
struct page *dst_page;
|
|
pgoff_t src_off;
|
|
pgoff_t dst_off;
|
|
void *src_addr;
|
|
void *dst_addr;
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
|
|
src_off = current_nat_addr(sbi, nid);
|
|
dst_off = next_nat_addr(sbi, src_off);
|
|
|
|
/* get current nat block page with lock */
|
|
src_page = f2fs_get_meta_page(sbi, src_off);
|
|
dst_page = f2fs_grab_meta_page(sbi, dst_off);
|
|
f2fs_bug_on(sbi, PageDirty(src_page));
|
|
|
|
src_addr = page_address(src_page);
|
|
dst_addr = page_address(dst_page);
|
|
memcpy(dst_addr, src_addr, PAGE_SIZE);
|
|
set_page_dirty(dst_page);
|
|
f2fs_put_page(src_page, 1);
|
|
|
|
set_to_next_nat(nm_i, nid);
|
|
|
|
return dst_page;
|
|
}
|
|
|
|
static struct nat_entry *__alloc_nat_entry(nid_t nid, bool no_fail)
|
|
{
|
|
struct nat_entry *new;
|
|
|
|
if (no_fail)
|
|
new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_F2FS_ZERO);
|
|
else
|
|
new = kmem_cache_alloc(nat_entry_slab, GFP_F2FS_ZERO);
|
|
if (new) {
|
|
nat_set_nid(new, nid);
|
|
nat_reset_flag(new);
|
|
}
|
|
return new;
|
|
}
|
|
|
|
static void __free_nat_entry(struct nat_entry *e)
|
|
{
|
|
kmem_cache_free(nat_entry_slab, e);
|
|
}
|
|
|
|
/* must be locked by nat_tree_lock */
|
|
static struct nat_entry *__init_nat_entry(struct f2fs_nm_info *nm_i,
|
|
struct nat_entry *ne, struct f2fs_nat_entry *raw_ne, bool no_fail)
|
|
{
|
|
if (no_fail)
|
|
f2fs_radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne);
|
|
else if (radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne))
|
|
return NULL;
|
|
|
|
if (raw_ne)
|
|
node_info_from_raw_nat(&ne->ni, raw_ne);
|
|
list_add_tail(&ne->list, &nm_i->nat_entries);
|
|
nm_i->nat_cnt++;
|
|
return ne;
|
|
}
|
|
|
|
static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n)
|
|
{
|
|
return radix_tree_lookup(&nm_i->nat_root, n);
|
|
}
|
|
|
|
static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i,
|
|
nid_t start, unsigned int nr, struct nat_entry **ep)
|
|
{
|
|
return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr);
|
|
}
|
|
|
|
static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e)
|
|
{
|
|
list_del(&e->list);
|
|
radix_tree_delete(&nm_i->nat_root, nat_get_nid(e));
|
|
nm_i->nat_cnt--;
|
|
__free_nat_entry(e);
|
|
}
|
|
|
|
static struct nat_entry_set *__grab_nat_entry_set(struct f2fs_nm_info *nm_i,
|
|
struct nat_entry *ne)
|
|
{
|
|
nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid);
|
|
struct nat_entry_set *head;
|
|
|
|
head = radix_tree_lookup(&nm_i->nat_set_root, set);
|
|
if (!head) {
|
|
head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_NOFS);
|
|
|
|
INIT_LIST_HEAD(&head->entry_list);
|
|
INIT_LIST_HEAD(&head->set_list);
|
|
head->set = set;
|
|
head->entry_cnt = 0;
|
|
f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head);
|
|
}
|
|
return head;
|
|
}
|
|
|
|
static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i,
|
|
struct nat_entry *ne)
|
|
{
|
|
struct nat_entry_set *head;
|
|
bool new_ne = nat_get_blkaddr(ne) == NEW_ADDR;
|
|
|
|
if (!new_ne)
|
|
head = __grab_nat_entry_set(nm_i, ne);
|
|
|
|
/*
|
|
* update entry_cnt in below condition:
|
|
* 1. update NEW_ADDR to valid block address;
|
|
* 2. update old block address to new one;
|
|
*/
|
|
if (!new_ne && (get_nat_flag(ne, IS_PREALLOC) ||
|
|
!get_nat_flag(ne, IS_DIRTY)))
|
|
head->entry_cnt++;
|
|
|
|
set_nat_flag(ne, IS_PREALLOC, new_ne);
|
|
|
|
if (get_nat_flag(ne, IS_DIRTY))
|
|
goto refresh_list;
|
|
|
|
nm_i->dirty_nat_cnt++;
|
|
set_nat_flag(ne, IS_DIRTY, true);
|
|
refresh_list:
|
|
if (new_ne)
|
|
list_del_init(&ne->list);
|
|
else
|
|
list_move_tail(&ne->list, &head->entry_list);
|
|
}
|
|
|
|
static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i,
|
|
struct nat_entry_set *set, struct nat_entry *ne)
|
|
{
|
|
list_move_tail(&ne->list, &nm_i->nat_entries);
|
|
set_nat_flag(ne, IS_DIRTY, false);
|
|
set->entry_cnt--;
|
|
nm_i->dirty_nat_cnt--;
|
|
}
|
|
|
|
static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i,
|
|
nid_t start, unsigned int nr, struct nat_entry_set **ep)
|
|
{
|
|
return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep,
|
|
start, nr);
|
|
}
|
|
|
|
int f2fs_need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
struct nat_entry *e;
|
|
bool need = false;
|
|
|
|
down_read(&nm_i->nat_tree_lock);
|
|
e = __lookup_nat_cache(nm_i, nid);
|
|
if (e) {
|
|
if (!get_nat_flag(e, IS_CHECKPOINTED) &&
|
|
!get_nat_flag(e, HAS_FSYNCED_INODE))
|
|
need = true;
|
|
}
|
|
up_read(&nm_i->nat_tree_lock);
|
|
return need;
|
|
}
|
|
|
|
bool f2fs_is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
struct nat_entry *e;
|
|
bool is_cp = true;
|
|
|
|
down_read(&nm_i->nat_tree_lock);
|
|
e = __lookup_nat_cache(nm_i, nid);
|
|
if (e && !get_nat_flag(e, IS_CHECKPOINTED))
|
|
is_cp = false;
|
|
up_read(&nm_i->nat_tree_lock);
|
|
return is_cp;
|
|
}
|
|
|
|
bool f2fs_need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
struct nat_entry *e;
|
|
bool need_update = true;
|
|
|
|
down_read(&nm_i->nat_tree_lock);
|
|
e = __lookup_nat_cache(nm_i, ino);
|
|
if (e && get_nat_flag(e, HAS_LAST_FSYNC) &&
|
|
(get_nat_flag(e, IS_CHECKPOINTED) ||
|
|
get_nat_flag(e, HAS_FSYNCED_INODE)))
|
|
need_update = false;
|
|
up_read(&nm_i->nat_tree_lock);
|
|
return need_update;
|
|
}
|
|
|
|
/* must be locked by nat_tree_lock */
|
|
static void cache_nat_entry(struct f2fs_sb_info *sbi, nid_t nid,
|
|
struct f2fs_nat_entry *ne)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
struct nat_entry *new, *e;
|
|
|
|
new = __alloc_nat_entry(nid, false);
|
|
if (!new)
|
|
return;
|
|
|
|
down_write(&nm_i->nat_tree_lock);
|
|
e = __lookup_nat_cache(nm_i, nid);
|
|
if (!e)
|
|
e = __init_nat_entry(nm_i, new, ne, false);
|
|
else
|
|
f2fs_bug_on(sbi, nat_get_ino(e) != le32_to_cpu(ne->ino) ||
|
|
nat_get_blkaddr(e) !=
|
|
le32_to_cpu(ne->block_addr) ||
|
|
nat_get_version(e) != ne->version);
|
|
up_write(&nm_i->nat_tree_lock);
|
|
if (e != new)
|
|
__free_nat_entry(new);
|
|
}
|
|
|
|
static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni,
|
|
block_t new_blkaddr, bool fsync_done)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
struct nat_entry *e;
|
|
struct nat_entry *new = __alloc_nat_entry(ni->nid, true);
|
|
|
|
down_write(&nm_i->nat_tree_lock);
|
|
e = __lookup_nat_cache(nm_i, ni->nid);
|
|
if (!e) {
|
|
e = __init_nat_entry(nm_i, new, NULL, true);
|
|
copy_node_info(&e->ni, ni);
|
|
f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR);
|
|
} else if (new_blkaddr == NEW_ADDR) {
|
|
/*
|
|
* when nid is reallocated,
|
|
* previous nat entry can be remained in nat cache.
|
|
* So, reinitialize it with new information.
|
|
*/
|
|
copy_node_info(&e->ni, ni);
|
|
f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR);
|
|
}
|
|
/* let's free early to reduce memory consumption */
|
|
if (e != new)
|
|
__free_nat_entry(new);
|
|
|
|
/* sanity check */
|
|
f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr);
|
|
f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR &&
|
|
new_blkaddr == NULL_ADDR);
|
|
f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR &&
|
|
new_blkaddr == NEW_ADDR);
|
|
f2fs_bug_on(sbi, is_valid_data_blkaddr(sbi, nat_get_blkaddr(e)) &&
|
|
new_blkaddr == NEW_ADDR);
|
|
|
|
/* increment version no as node is removed */
|
|
if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) {
|
|
unsigned char version = nat_get_version(e);
|
|
nat_set_version(e, inc_node_version(version));
|
|
}
|
|
|
|
/* change address */
|
|
nat_set_blkaddr(e, new_blkaddr);
|
|
if (!is_valid_data_blkaddr(sbi, new_blkaddr))
|
|
set_nat_flag(e, IS_CHECKPOINTED, false);
|
|
__set_nat_cache_dirty(nm_i, e);
|
|
|
|
/* update fsync_mark if its inode nat entry is still alive */
|
|
if (ni->nid != ni->ino)
|
|
e = __lookup_nat_cache(nm_i, ni->ino);
|
|
if (e) {
|
|
if (fsync_done && ni->nid == ni->ino)
|
|
set_nat_flag(e, HAS_FSYNCED_INODE, true);
|
|
set_nat_flag(e, HAS_LAST_FSYNC, fsync_done);
|
|
}
|
|
up_write(&nm_i->nat_tree_lock);
|
|
}
|
|
|
|
int f2fs_try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
int nr = nr_shrink;
|
|
|
|
if (!down_write_trylock(&nm_i->nat_tree_lock))
|
|
return 0;
|
|
|
|
while (nr_shrink && !list_empty(&nm_i->nat_entries)) {
|
|
struct nat_entry *ne;
|
|
ne = list_first_entry(&nm_i->nat_entries,
|
|
struct nat_entry, list);
|
|
__del_from_nat_cache(nm_i, ne);
|
|
nr_shrink--;
|
|
}
|
|
up_write(&nm_i->nat_tree_lock);
|
|
return nr - nr_shrink;
|
|
}
|
|
|
|
/*
|
|
* This function always returns success
|
|
*/
|
|
void f2fs_get_node_info(struct f2fs_sb_info *sbi, nid_t nid,
|
|
struct node_info *ni)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
|
|
struct f2fs_journal *journal = curseg->journal;
|
|
nid_t start_nid = START_NID(nid);
|
|
struct f2fs_nat_block *nat_blk;
|
|
struct page *page = NULL;
|
|
struct f2fs_nat_entry ne;
|
|
struct nat_entry *e;
|
|
pgoff_t index;
|
|
int i;
|
|
|
|
ni->nid = nid;
|
|
|
|
/* Check nat cache */
|
|
down_read(&nm_i->nat_tree_lock);
|
|
e = __lookup_nat_cache(nm_i, nid);
|
|
if (e) {
|
|
ni->ino = nat_get_ino(e);
|
|
ni->blk_addr = nat_get_blkaddr(e);
|
|
ni->version = nat_get_version(e);
|
|
up_read(&nm_i->nat_tree_lock);
|
|
return;
|
|
}
|
|
|
|
memset(&ne, 0, sizeof(struct f2fs_nat_entry));
|
|
|
|
/* Check current segment summary */
|
|
down_read(&curseg->journal_rwsem);
|
|
i = f2fs_lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0);
|
|
if (i >= 0) {
|
|
ne = nat_in_journal(journal, i);
|
|
node_info_from_raw_nat(ni, &ne);
|
|
}
|
|
up_read(&curseg->journal_rwsem);
|
|
if (i >= 0) {
|
|
up_read(&nm_i->nat_tree_lock);
|
|
goto cache;
|
|
}
|
|
|
|
/* Fill node_info from nat page */
|
|
index = current_nat_addr(sbi, nid);
|
|
up_read(&nm_i->nat_tree_lock);
|
|
|
|
page = f2fs_get_meta_page(sbi, index);
|
|
nat_blk = (struct f2fs_nat_block *)page_address(page);
|
|
ne = nat_blk->entries[nid - start_nid];
|
|
node_info_from_raw_nat(ni, &ne);
|
|
f2fs_put_page(page, 1);
|
|
cache:
|
|
/* cache nat entry */
|
|
cache_nat_entry(sbi, nid, &ne);
|
|
}
|
|
|
|
/*
|
|
* readahead MAX_RA_NODE number of node pages.
|
|
*/
|
|
static void f2fs_ra_node_pages(struct page *parent, int start, int n)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_P_SB(parent);
|
|
struct blk_plug plug;
|
|
int i, end;
|
|
nid_t nid;
|
|
|
|
blk_start_plug(&plug);
|
|
|
|
/* Then, try readahead for siblings of the desired node */
|
|
end = start + n;
|
|
end = min(end, NIDS_PER_BLOCK);
|
|
for (i = start; i < end; i++) {
|
|
nid = get_nid(parent, i, false);
|
|
f2fs_ra_node_page(sbi, nid);
|
|
}
|
|
|
|
blk_finish_plug(&plug);
|
|
}
|
|
|
|
pgoff_t f2fs_get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs)
|
|
{
|
|
const long direct_index = ADDRS_PER_INODE(dn->inode);
|
|
const long direct_blks = ADDRS_PER_BLOCK;
|
|
const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK;
|
|
unsigned int skipped_unit = ADDRS_PER_BLOCK;
|
|
int cur_level = dn->cur_level;
|
|
int max_level = dn->max_level;
|
|
pgoff_t base = 0;
|
|
|
|
if (!dn->max_level)
|
|
return pgofs + 1;
|
|
|
|
while (max_level-- > cur_level)
|
|
skipped_unit *= NIDS_PER_BLOCK;
|
|
|
|
switch (dn->max_level) {
|
|
case 3:
|
|
base += 2 * indirect_blks;
|
|
case 2:
|
|
base += 2 * direct_blks;
|
|
case 1:
|
|
base += direct_index;
|
|
break;
|
|
default:
|
|
f2fs_bug_on(F2FS_I_SB(dn->inode), 1);
|
|
}
|
|
|
|
return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base;
|
|
}
|
|
|
|
/*
|
|
* The maximum depth is four.
|
|
* Offset[0] will have raw inode offset.
|
|
*/
|
|
static int get_node_path(struct inode *inode, long block,
|
|
int offset[4], unsigned int noffset[4])
|
|
{
|
|
const long direct_index = ADDRS_PER_INODE(inode);
|
|
const long direct_blks = ADDRS_PER_BLOCK;
|
|
const long dptrs_per_blk = NIDS_PER_BLOCK;
|
|
const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK;
|
|
const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK;
|
|
int n = 0;
|
|
int level = 0;
|
|
|
|
noffset[0] = 0;
|
|
|
|
if (block < direct_index) {
|
|
offset[n] = block;
|
|
goto got;
|
|
}
|
|
block -= direct_index;
|
|
if (block < direct_blks) {
|
|
offset[n++] = NODE_DIR1_BLOCK;
|
|
noffset[n] = 1;
|
|
offset[n] = block;
|
|
level = 1;
|
|
goto got;
|
|
}
|
|
block -= direct_blks;
|
|
if (block < direct_blks) {
|
|
offset[n++] = NODE_DIR2_BLOCK;
|
|
noffset[n] = 2;
|
|
offset[n] = block;
|
|
level = 1;
|
|
goto got;
|
|
}
|
|
block -= direct_blks;
|
|
if (block < indirect_blks) {
|
|
offset[n++] = NODE_IND1_BLOCK;
|
|
noffset[n] = 3;
|
|
offset[n++] = block / direct_blks;
|
|
noffset[n] = 4 + offset[n - 1];
|
|
offset[n] = block % direct_blks;
|
|
level = 2;
|
|
goto got;
|
|
}
|
|
block -= indirect_blks;
|
|
if (block < indirect_blks) {
|
|
offset[n++] = NODE_IND2_BLOCK;
|
|
noffset[n] = 4 + dptrs_per_blk;
|
|
offset[n++] = block / direct_blks;
|
|
noffset[n] = 5 + dptrs_per_blk + offset[n - 1];
|
|
offset[n] = block % direct_blks;
|
|
level = 2;
|
|
goto got;
|
|
}
|
|
block -= indirect_blks;
|
|
if (block < dindirect_blks) {
|
|
offset[n++] = NODE_DIND_BLOCK;
|
|
noffset[n] = 5 + (dptrs_per_blk * 2);
|
|
offset[n++] = block / indirect_blks;
|
|
noffset[n] = 6 + (dptrs_per_blk * 2) +
|
|
offset[n - 1] * (dptrs_per_blk + 1);
|
|
offset[n++] = (block / direct_blks) % dptrs_per_blk;
|
|
noffset[n] = 7 + (dptrs_per_blk * 2) +
|
|
offset[n - 2] * (dptrs_per_blk + 1) +
|
|
offset[n - 1];
|
|
offset[n] = block % direct_blks;
|
|
level = 3;
|
|
goto got;
|
|
} else {
|
|
return -E2BIG;
|
|
}
|
|
got:
|
|
return level;
|
|
}
|
|
|
|
/*
|
|
* Caller should call f2fs_put_dnode(dn).
|
|
* Also, it should grab and release a rwsem by calling f2fs_lock_op() and
|
|
* f2fs_unlock_op() only if ro is not set RDONLY_NODE.
|
|
* In the case of RDONLY_NODE, we don't need to care about mutex.
|
|
*/
|
|
int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
|
|
struct page *npage[4];
|
|
struct page *parent = NULL;
|
|
int offset[4];
|
|
unsigned int noffset[4];
|
|
nid_t nids[4];
|
|
int level, i = 0;
|
|
int err = 0;
|
|
|
|
level = get_node_path(dn->inode, index, offset, noffset);
|
|
if (level < 0)
|
|
return level;
|
|
|
|
nids[0] = dn->inode->i_ino;
|
|
npage[0] = dn->inode_page;
|
|
|
|
if (!npage[0]) {
|
|
npage[0] = f2fs_get_node_page(sbi, nids[0]);
|
|
if (IS_ERR(npage[0]))
|
|
return PTR_ERR(npage[0]);
|
|
}
|
|
|
|
/* if inline_data is set, should not report any block indices */
|
|
if (f2fs_has_inline_data(dn->inode) && index) {
|
|
err = -ENOENT;
|
|
f2fs_put_page(npage[0], 1);
|
|
goto release_out;
|
|
}
|
|
|
|
parent = npage[0];
|
|
if (level != 0)
|
|
nids[1] = get_nid(parent, offset[0], true);
|
|
dn->inode_page = npage[0];
|
|
dn->inode_page_locked = true;
|
|
|
|
/* get indirect or direct nodes */
|
|
for (i = 1; i <= level; i++) {
|
|
bool done = false;
|
|
|
|
if (!nids[i] && mode == ALLOC_NODE) {
|
|
/* alloc new node */
|
|
if (!f2fs_alloc_nid(sbi, &(nids[i]))) {
|
|
err = -ENOSPC;
|
|
goto release_pages;
|
|
}
|
|
|
|
dn->nid = nids[i];
|
|
npage[i] = f2fs_new_node_page(dn, noffset[i]);
|
|
if (IS_ERR(npage[i])) {
|
|
f2fs_alloc_nid_failed(sbi, nids[i]);
|
|
err = PTR_ERR(npage[i]);
|
|
goto release_pages;
|
|
}
|
|
|
|
set_nid(parent, offset[i - 1], nids[i], i == 1);
|
|
f2fs_alloc_nid_done(sbi, nids[i]);
|
|
done = true;
|
|
} else if (mode == LOOKUP_NODE_RA && i == level && level > 1) {
|
|
npage[i] = f2fs_get_node_page_ra(parent, offset[i - 1]);
|
|
if (IS_ERR(npage[i])) {
|
|
err = PTR_ERR(npage[i]);
|
|
goto release_pages;
|
|
}
|
|
done = true;
|
|
}
|
|
if (i == 1) {
|
|
dn->inode_page_locked = false;
|
|
unlock_page(parent);
|
|
} else {
|
|
f2fs_put_page(parent, 1);
|
|
}
|
|
|
|
if (!done) {
|
|
npage[i] = f2fs_get_node_page(sbi, nids[i]);
|
|
if (IS_ERR(npage[i])) {
|
|
err = PTR_ERR(npage[i]);
|
|
f2fs_put_page(npage[0], 0);
|
|
goto release_out;
|
|
}
|
|
}
|
|
if (i < level) {
|
|
parent = npage[i];
|
|
nids[i + 1] = get_nid(parent, offset[i], false);
|
|
}
|
|
}
|
|
dn->nid = nids[level];
|
|
dn->ofs_in_node = offset[level];
|
|
dn->node_page = npage[level];
|
|
dn->data_blkaddr = datablock_addr(dn->inode,
|
|
dn->node_page, dn->ofs_in_node);
|
|
return 0;
|
|
|
|
release_pages:
|
|
f2fs_put_page(parent, 1);
|
|
if (i > 1)
|
|
f2fs_put_page(npage[0], 0);
|
|
release_out:
|
|
dn->inode_page = NULL;
|
|
dn->node_page = NULL;
|
|
if (err == -ENOENT) {
|
|
dn->cur_level = i;
|
|
dn->max_level = level;
|
|
dn->ofs_in_node = offset[level];
|
|
}
|
|
return err;
|
|
}
|
|
|
|
static void truncate_node(struct dnode_of_data *dn)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
|
|
struct node_info ni;
|
|
|
|
f2fs_get_node_info(sbi, dn->nid, &ni);
|
|
|
|
/* Deallocate node address */
|
|
f2fs_invalidate_blocks(sbi, ni.blk_addr);
|
|
dec_valid_node_count(sbi, dn->inode, dn->nid == dn->inode->i_ino);
|
|
set_node_addr(sbi, &ni, NULL_ADDR, false);
|
|
|
|
if (dn->nid == dn->inode->i_ino) {
|
|
f2fs_remove_orphan_inode(sbi, dn->nid);
|
|
dec_valid_inode_count(sbi);
|
|
f2fs_inode_synced(dn->inode);
|
|
}
|
|
|
|
clear_node_page_dirty(dn->node_page);
|
|
set_sbi_flag(sbi, SBI_IS_DIRTY);
|
|
|
|
f2fs_put_page(dn->node_page, 1);
|
|
|
|
invalidate_mapping_pages(NODE_MAPPING(sbi),
|
|
dn->node_page->index, dn->node_page->index);
|
|
|
|
dn->node_page = NULL;
|
|
trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr);
|
|
}
|
|
|
|
static int truncate_dnode(struct dnode_of_data *dn)
|
|
{
|
|
struct page *page;
|
|
|
|
if (dn->nid == 0)
|
|
return 1;
|
|
|
|
/* get direct node */
|
|
page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid);
|
|
if (IS_ERR(page) && PTR_ERR(page) == -ENOENT)
|
|
return 1;
|
|
else if (IS_ERR(page))
|
|
return PTR_ERR(page);
|
|
|
|
/* Make dnode_of_data for parameter */
|
|
dn->node_page = page;
|
|
dn->ofs_in_node = 0;
|
|
f2fs_truncate_data_blocks(dn);
|
|
truncate_node(dn);
|
|
return 1;
|
|
}
|
|
|
|
static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs,
|
|
int ofs, int depth)
|
|
{
|
|
struct dnode_of_data rdn = *dn;
|
|
struct page *page;
|
|
struct f2fs_node *rn;
|
|
nid_t child_nid;
|
|
unsigned int child_nofs;
|
|
int freed = 0;
|
|
int i, ret;
|
|
|
|
if (dn->nid == 0)
|
|
return NIDS_PER_BLOCK + 1;
|
|
|
|
trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr);
|
|
|
|
page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid);
|
|
if (IS_ERR(page)) {
|
|
trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page));
|
|
return PTR_ERR(page);
|
|
}
|
|
|
|
f2fs_ra_node_pages(page, ofs, NIDS_PER_BLOCK);
|
|
|
|
rn = F2FS_NODE(page);
|
|
if (depth < 3) {
|
|
for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) {
|
|
child_nid = le32_to_cpu(rn->in.nid[i]);
|
|
if (child_nid == 0)
|
|
continue;
|
|
rdn.nid = child_nid;
|
|
ret = truncate_dnode(&rdn);
|
|
if (ret < 0)
|
|
goto out_err;
|
|
if (set_nid(page, i, 0, false))
|
|
dn->node_changed = true;
|
|
}
|
|
} else {
|
|
child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1;
|
|
for (i = ofs; i < NIDS_PER_BLOCK; i++) {
|
|
child_nid = le32_to_cpu(rn->in.nid[i]);
|
|
if (child_nid == 0) {
|
|
child_nofs += NIDS_PER_BLOCK + 1;
|
|
continue;
|
|
}
|
|
rdn.nid = child_nid;
|
|
ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1);
|
|
if (ret == (NIDS_PER_BLOCK + 1)) {
|
|
if (set_nid(page, i, 0, false))
|
|
dn->node_changed = true;
|
|
child_nofs += ret;
|
|
} else if (ret < 0 && ret != -ENOENT) {
|
|
goto out_err;
|
|
}
|
|
}
|
|
freed = child_nofs;
|
|
}
|
|
|
|
if (!ofs) {
|
|
/* remove current indirect node */
|
|
dn->node_page = page;
|
|
truncate_node(dn);
|
|
freed++;
|
|
} else {
|
|
f2fs_put_page(page, 1);
|
|
}
|
|
trace_f2fs_truncate_nodes_exit(dn->inode, freed);
|
|
return freed;
|
|
|
|
out_err:
|
|
f2fs_put_page(page, 1);
|
|
trace_f2fs_truncate_nodes_exit(dn->inode, ret);
|
|
return ret;
|
|
}
|
|
|
|
static int truncate_partial_nodes(struct dnode_of_data *dn,
|
|
struct f2fs_inode *ri, int *offset, int depth)
|
|
{
|
|
struct page *pages[2];
|
|
nid_t nid[3];
|
|
nid_t child_nid;
|
|
int err = 0;
|
|
int i;
|
|
int idx = depth - 2;
|
|
|
|
nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]);
|
|
if (!nid[0])
|
|
return 0;
|
|
|
|
/* get indirect nodes in the path */
|
|
for (i = 0; i < idx + 1; i++) {
|
|
/* reference count'll be increased */
|
|
pages[i] = f2fs_get_node_page(F2FS_I_SB(dn->inode), nid[i]);
|
|
if (IS_ERR(pages[i])) {
|
|
err = PTR_ERR(pages[i]);
|
|
idx = i - 1;
|
|
goto fail;
|
|
}
|
|
nid[i + 1] = get_nid(pages[i], offset[i + 1], false);
|
|
}
|
|
|
|
f2fs_ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK);
|
|
|
|
/* free direct nodes linked to a partial indirect node */
|
|
for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) {
|
|
child_nid = get_nid(pages[idx], i, false);
|
|
if (!child_nid)
|
|
continue;
|
|
dn->nid = child_nid;
|
|
err = truncate_dnode(dn);
|
|
if (err < 0)
|
|
goto fail;
|
|
if (set_nid(pages[idx], i, 0, false))
|
|
dn->node_changed = true;
|
|
}
|
|
|
|
if (offset[idx + 1] == 0) {
|
|
dn->node_page = pages[idx];
|
|
dn->nid = nid[idx];
|
|
truncate_node(dn);
|
|
} else {
|
|
f2fs_put_page(pages[idx], 1);
|
|
}
|
|
offset[idx]++;
|
|
offset[idx + 1] = 0;
|
|
idx--;
|
|
fail:
|
|
for (i = idx; i >= 0; i--)
|
|
f2fs_put_page(pages[i], 1);
|
|
|
|
trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err);
|
|
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* All the block addresses of data and nodes should be nullified.
|
|
*/
|
|
int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
|
int err = 0, cont = 1;
|
|
int level, offset[4], noffset[4];
|
|
unsigned int nofs = 0;
|
|
struct f2fs_inode *ri;
|
|
struct dnode_of_data dn;
|
|
struct page *page;
|
|
|
|
trace_f2fs_truncate_inode_blocks_enter(inode, from);
|
|
|
|
level = get_node_path(inode, from, offset, noffset);
|
|
if (level < 0)
|
|
return level;
|
|
|
|
page = f2fs_get_node_page(sbi, inode->i_ino);
|
|
if (IS_ERR(page)) {
|
|
trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page));
|
|
return PTR_ERR(page);
|
|
}
|
|
|
|
set_new_dnode(&dn, inode, page, NULL, 0);
|
|
unlock_page(page);
|
|
|
|
ri = F2FS_INODE(page);
|
|
switch (level) {
|
|
case 0:
|
|
case 1:
|
|
nofs = noffset[1];
|
|
break;
|
|
case 2:
|
|
nofs = noffset[1];
|
|
if (!offset[level - 1])
|
|
goto skip_partial;
|
|
err = truncate_partial_nodes(&dn, ri, offset, level);
|
|
if (err < 0 && err != -ENOENT)
|
|
goto fail;
|
|
nofs += 1 + NIDS_PER_BLOCK;
|
|
break;
|
|
case 3:
|
|
nofs = 5 + 2 * NIDS_PER_BLOCK;
|
|
if (!offset[level - 1])
|
|
goto skip_partial;
|
|
err = truncate_partial_nodes(&dn, ri, offset, level);
|
|
if (err < 0 && err != -ENOENT)
|
|
goto fail;
|
|
break;
|
|
default:
|
|
BUG();
|
|
}
|
|
|
|
skip_partial:
|
|
while (cont) {
|
|
dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]);
|
|
switch (offset[0]) {
|
|
case NODE_DIR1_BLOCK:
|
|
case NODE_DIR2_BLOCK:
|
|
err = truncate_dnode(&dn);
|
|
break;
|
|
|
|
case NODE_IND1_BLOCK:
|
|
case NODE_IND2_BLOCK:
|
|
err = truncate_nodes(&dn, nofs, offset[1], 2);
|
|
break;
|
|
|
|
case NODE_DIND_BLOCK:
|
|
err = truncate_nodes(&dn, nofs, offset[1], 3);
|
|
cont = 0;
|
|
break;
|
|
|
|
default:
|
|
BUG();
|
|
}
|
|
if (err < 0 && err != -ENOENT)
|
|
goto fail;
|
|
if (offset[1] == 0 &&
|
|
ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) {
|
|
lock_page(page);
|
|
BUG_ON(page->mapping != NODE_MAPPING(sbi));
|
|
f2fs_wait_on_page_writeback(page, NODE, true);
|
|
ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0;
|
|
set_page_dirty(page);
|
|
unlock_page(page);
|
|
}
|
|
offset[1] = 0;
|
|
offset[0]++;
|
|
nofs += err;
|
|
}
|
|
fail:
|
|
f2fs_put_page(page, 0);
|
|
trace_f2fs_truncate_inode_blocks_exit(inode, err);
|
|
return err > 0 ? 0 : err;
|
|
}
|
|
|
|
/* caller must lock inode page */
|
|
int f2fs_truncate_xattr_node(struct inode *inode)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
|
nid_t nid = F2FS_I(inode)->i_xattr_nid;
|
|
struct dnode_of_data dn;
|
|
struct page *npage;
|
|
|
|
if (!nid)
|
|
return 0;
|
|
|
|
npage = f2fs_get_node_page(sbi, nid);
|
|
if (IS_ERR(npage))
|
|
return PTR_ERR(npage);
|
|
|
|
f2fs_i_xnid_write(inode, 0);
|
|
|
|
set_new_dnode(&dn, inode, NULL, npage, nid);
|
|
truncate_node(&dn);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Caller should grab and release a rwsem by calling f2fs_lock_op() and
|
|
* f2fs_unlock_op().
|
|
*/
|
|
int f2fs_remove_inode_page(struct inode *inode)
|
|
{
|
|
struct dnode_of_data dn;
|
|
int err;
|
|
|
|
set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino);
|
|
err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE);
|
|
if (err)
|
|
return err;
|
|
|
|
err = f2fs_truncate_xattr_node(inode);
|
|
if (err) {
|
|
f2fs_put_dnode(&dn);
|
|
return err;
|
|
}
|
|
|
|
/* remove potential inline_data blocks */
|
|
if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
|
|
S_ISLNK(inode->i_mode))
|
|
f2fs_truncate_data_blocks_range(&dn, 1);
|
|
|
|
/* 0 is possible, after f2fs_new_inode() has failed */
|
|
f2fs_bug_on(F2FS_I_SB(inode),
|
|
inode->i_blocks != 0 && inode->i_blocks != 8);
|
|
|
|
/* will put inode & node pages */
|
|
truncate_node(&dn);
|
|
return 0;
|
|
}
|
|
|
|
struct page *f2fs_new_inode_page(struct inode *inode)
|
|
{
|
|
struct dnode_of_data dn;
|
|
|
|
/* allocate inode page for new inode */
|
|
set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino);
|
|
|
|
/* caller should f2fs_put_page(page, 1); */
|
|
return f2fs_new_node_page(&dn, 0);
|
|
}
|
|
|
|
struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
|
|
struct node_info new_ni;
|
|
struct page *page;
|
|
int err;
|
|
|
|
if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC)))
|
|
return ERR_PTR(-EPERM);
|
|
|
|
page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false);
|
|
if (!page)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
if (unlikely((err = inc_valid_node_count(sbi, dn->inode, !ofs))))
|
|
goto fail;
|
|
|
|
#ifdef CONFIG_F2FS_CHECK_FS
|
|
f2fs_get_node_info(sbi, dn->nid, &new_ni);
|
|
f2fs_bug_on(sbi, new_ni.blk_addr != NULL_ADDR);
|
|
#endif
|
|
new_ni.nid = dn->nid;
|
|
new_ni.ino = dn->inode->i_ino;
|
|
new_ni.blk_addr = NULL_ADDR;
|
|
new_ni.flag = 0;
|
|
new_ni.version = 0;
|
|
set_node_addr(sbi, &new_ni, NEW_ADDR, false);
|
|
|
|
f2fs_wait_on_page_writeback(page, NODE, true);
|
|
fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true);
|
|
set_cold_node(page, S_ISDIR(dn->inode->i_mode));
|
|
if (!PageUptodate(page))
|
|
SetPageUptodate(page);
|
|
if (set_page_dirty(page))
|
|
dn->node_changed = true;
|
|
|
|
if (f2fs_has_xattr_block(ofs))
|
|
f2fs_i_xnid_write(dn->inode, dn->nid);
|
|
|
|
if (ofs == 0)
|
|
inc_valid_inode_count(sbi);
|
|
return page;
|
|
|
|
fail:
|
|
clear_node_page_dirty(page);
|
|
f2fs_put_page(page, 1);
|
|
return ERR_PTR(err);
|
|
}
|
|
|
|
/*
|
|
* Caller should do after getting the following values.
|
|
* 0: f2fs_put_page(page, 0)
|
|
* LOCKED_PAGE or error: f2fs_put_page(page, 1)
|
|
*/
|
|
static int read_node_page(struct page *page, int op_flags)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_P_SB(page);
|
|
struct node_info ni;
|
|
struct f2fs_io_info fio = {
|
|
.sbi = sbi,
|
|
.type = NODE,
|
|
.op = REQ_OP_READ,
|
|
.op_flags = op_flags,
|
|
.page = page,
|
|
.encrypted_page = NULL,
|
|
};
|
|
|
|
if (PageUptodate(page)) {
|
|
#ifdef CONFIG_F2FS_CHECK_FS
|
|
f2fs_bug_on(sbi, !f2fs_inode_chksum_verify(sbi, page));
|
|
#endif
|
|
return LOCKED_PAGE;
|
|
}
|
|
|
|
f2fs_get_node_info(sbi, page->index, &ni);
|
|
|
|
if (unlikely(ni.blk_addr == NULL_ADDR) ||
|
|
is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)) {
|
|
ClearPageUptodate(page);
|
|
return -ENOENT;
|
|
}
|
|
|
|
fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr;
|
|
return f2fs_submit_page_bio(&fio);
|
|
}
|
|
|
|
/*
|
|
* Readahead a node page
|
|
*/
|
|
void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid)
|
|
{
|
|
struct page *apage;
|
|
int err;
|
|
|
|
if (!nid)
|
|
return;
|
|
if (f2fs_check_nid_range(sbi, nid))
|
|
return;
|
|
|
|
rcu_read_lock();
|
|
apage = radix_tree_lookup(&NODE_MAPPING(sbi)->i_pages, nid);
|
|
rcu_read_unlock();
|
|
if (apage)
|
|
return;
|
|
|
|
apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false);
|
|
if (!apage)
|
|
return;
|
|
|
|
err = read_node_page(apage, REQ_RAHEAD);
|
|
f2fs_put_page(apage, err ? 1 : 0);
|
|
}
|
|
|
|
static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid,
|
|
struct page *parent, int start)
|
|
{
|
|
struct page *page;
|
|
int err;
|
|
|
|
if (!nid)
|
|
return ERR_PTR(-ENOENT);
|
|
if (f2fs_check_nid_range(sbi, nid))
|
|
return ERR_PTR(-EINVAL);
|
|
repeat:
|
|
page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false);
|
|
if (!page)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
err = read_node_page(page, 0);
|
|
if (err < 0) {
|
|
f2fs_put_page(page, 1);
|
|
return ERR_PTR(err);
|
|
} else if (err == LOCKED_PAGE) {
|
|
err = 0;
|
|
goto page_hit;
|
|
}
|
|
|
|
if (parent)
|
|
f2fs_ra_node_pages(parent, start + 1, MAX_RA_NODE);
|
|
|
|
lock_page(page);
|
|
|
|
if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
|
|
f2fs_put_page(page, 1);
|
|
goto repeat;
|
|
}
|
|
|
|
if (unlikely(!PageUptodate(page))) {
|
|
err = -EIO;
|
|
goto out_err;
|
|
}
|
|
|
|
if (!f2fs_inode_chksum_verify(sbi, page)) {
|
|
err = -EBADMSG;
|
|
goto out_err;
|
|
}
|
|
page_hit:
|
|
if(unlikely(nid != nid_of_node(page))) {
|
|
f2fs_msg(sbi->sb, KERN_WARNING, "inconsistent node block, "
|
|
"nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]",
|
|
nid, nid_of_node(page), ino_of_node(page),
|
|
ofs_of_node(page), cpver_of_node(page),
|
|
next_blkaddr_of_node(page));
|
|
err = -EINVAL;
|
|
out_err:
|
|
ClearPageUptodate(page);
|
|
f2fs_put_page(page, 1);
|
|
return ERR_PTR(err);
|
|
}
|
|
return page;
|
|
}
|
|
|
|
struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid)
|
|
{
|
|
return __get_node_page(sbi, nid, NULL, 0);
|
|
}
|
|
|
|
struct page *f2fs_get_node_page_ra(struct page *parent, int start)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_P_SB(parent);
|
|
nid_t nid = get_nid(parent, start, false);
|
|
|
|
return __get_node_page(sbi, nid, parent, start);
|
|
}
|
|
|
|
static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino)
|
|
{
|
|
struct inode *inode;
|
|
struct page *page;
|
|
int ret;
|
|
|
|
/* should flush inline_data before evict_inode */
|
|
inode = ilookup(sbi->sb, ino);
|
|
if (!inode)
|
|
return;
|
|
|
|
page = f2fs_pagecache_get_page(inode->i_mapping, 0,
|
|
FGP_LOCK|FGP_NOWAIT, 0);
|
|
if (!page)
|
|
goto iput_out;
|
|
|
|
if (!PageUptodate(page))
|
|
goto page_out;
|
|
|
|
if (!PageDirty(page))
|
|
goto page_out;
|
|
|
|
if (!clear_page_dirty_for_io(page))
|
|
goto page_out;
|
|
|
|
ret = f2fs_write_inline_data(inode, page);
|
|
inode_dec_dirty_pages(inode);
|
|
f2fs_remove_dirty_inode(inode);
|
|
if (ret)
|
|
set_page_dirty(page);
|
|
page_out:
|
|
f2fs_put_page(page, 1);
|
|
iput_out:
|
|
iput(inode);
|
|
}
|
|
|
|
static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino)
|
|
{
|
|
pgoff_t index;
|
|
struct pagevec pvec;
|
|
struct page *last_page = NULL;
|
|
int nr_pages;
|
|
|
|
pagevec_init(&pvec);
|
|
index = 0;
|
|
|
|
while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index,
|
|
PAGECACHE_TAG_DIRTY))) {
|
|
int i;
|
|
|
|
for (i = 0; i < nr_pages; i++) {
|
|
struct page *page = pvec.pages[i];
|
|
|
|
if (unlikely(f2fs_cp_error(sbi))) {
|
|
f2fs_put_page(last_page, 0);
|
|
pagevec_release(&pvec);
|
|
return ERR_PTR(-EIO);
|
|
}
|
|
|
|
if (!IS_DNODE(page) || !is_cold_node(page))
|
|
continue;
|
|
if (ino_of_node(page) != ino)
|
|
continue;
|
|
|
|
lock_page(page);
|
|
|
|
if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
|
|
continue_unlock:
|
|
unlock_page(page);
|
|
continue;
|
|
}
|
|
if (ino_of_node(page) != ino)
|
|
goto continue_unlock;
|
|
|
|
if (!PageDirty(page)) {
|
|
/* someone wrote it for us */
|
|
goto continue_unlock;
|
|
}
|
|
|
|
if (last_page)
|
|
f2fs_put_page(last_page, 0);
|
|
|
|
get_page(page);
|
|
last_page = page;
|
|
unlock_page(page);
|
|
}
|
|
pagevec_release(&pvec);
|
|
cond_resched();
|
|
}
|
|
return last_page;
|
|
}
|
|
|
|
static int __write_node_page(struct page *page, bool atomic, bool *submitted,
|
|
struct writeback_control *wbc, bool do_balance,
|
|
enum iostat_type io_type)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_P_SB(page);
|
|
nid_t nid;
|
|
struct node_info ni;
|
|
struct f2fs_io_info fio = {
|
|
.sbi = sbi,
|
|
.ino = ino_of_node(page),
|
|
.type = NODE,
|
|
.op = REQ_OP_WRITE,
|
|
.op_flags = wbc_to_write_flags(wbc),
|
|
.page = page,
|
|
.encrypted_page = NULL,
|
|
.submitted = false,
|
|
.io_type = io_type,
|
|
.io_wbc = wbc,
|
|
};
|
|
|
|
trace_f2fs_writepage(page, NODE);
|
|
|
|
if (unlikely(f2fs_cp_error(sbi)))
|
|
goto redirty_out;
|
|
|
|
if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
|
|
goto redirty_out;
|
|
|
|
/* get old block addr of this node page */
|
|
nid = nid_of_node(page);
|
|
f2fs_bug_on(sbi, page->index != nid);
|
|
|
|
if (wbc->for_reclaim) {
|
|
if (!down_read_trylock(&sbi->node_write))
|
|
goto redirty_out;
|
|
} else {
|
|
down_read(&sbi->node_write);
|
|
}
|
|
|
|
f2fs_get_node_info(sbi, nid, &ni);
|
|
|
|
/* This page is already truncated */
|
|
if (unlikely(ni.blk_addr == NULL_ADDR)) {
|
|
ClearPageUptodate(page);
|
|
dec_page_count(sbi, F2FS_DIRTY_NODES);
|
|
up_read(&sbi->node_write);
|
|
unlock_page(page);
|
|
return 0;
|
|
}
|
|
|
|
if (__is_valid_data_blkaddr(ni.blk_addr) &&
|
|
!f2fs_is_valid_blkaddr(sbi, ni.blk_addr, DATA_GENERIC))
|
|
goto redirty_out;
|
|
|
|
if (atomic && !test_opt(sbi, NOBARRIER))
|
|
fio.op_flags |= REQ_PREFLUSH | REQ_FUA;
|
|
|
|
set_page_writeback(page);
|
|
ClearPageError(page);
|
|
fio.old_blkaddr = ni.blk_addr;
|
|
f2fs_do_write_node_page(nid, &fio);
|
|
set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page));
|
|
dec_page_count(sbi, F2FS_DIRTY_NODES);
|
|
up_read(&sbi->node_write);
|
|
|
|
if (wbc->for_reclaim) {
|
|
f2fs_submit_merged_write_cond(sbi, page->mapping->host, 0,
|
|
page->index, NODE);
|
|
submitted = NULL;
|
|
}
|
|
|
|
unlock_page(page);
|
|
|
|
if (unlikely(f2fs_cp_error(sbi))) {
|
|
f2fs_submit_merged_write(sbi, NODE);
|
|
submitted = NULL;
|
|
}
|
|
if (submitted)
|
|
*submitted = fio.submitted;
|
|
|
|
if (do_balance)
|
|
f2fs_balance_fs(sbi, false);
|
|
return 0;
|
|
|
|
redirty_out:
|
|
redirty_page_for_writepage(wbc, page);
|
|
return AOP_WRITEPAGE_ACTIVATE;
|
|
}
|
|
|
|
void f2fs_move_node_page(struct page *node_page, int gc_type)
|
|
{
|
|
if (gc_type == FG_GC) {
|
|
struct writeback_control wbc = {
|
|
.sync_mode = WB_SYNC_ALL,
|
|
.nr_to_write = 1,
|
|
.for_reclaim = 0,
|
|
};
|
|
|
|
set_page_dirty(node_page);
|
|
f2fs_wait_on_page_writeback(node_page, NODE, true);
|
|
|
|
f2fs_bug_on(F2FS_P_SB(node_page), PageWriteback(node_page));
|
|
if (!clear_page_dirty_for_io(node_page))
|
|
goto out_page;
|
|
|
|
if (__write_node_page(node_page, false, NULL,
|
|
&wbc, false, FS_GC_NODE_IO))
|
|
unlock_page(node_page);
|
|
goto release_page;
|
|
} else {
|
|
/* set page dirty and write it */
|
|
if (!PageWriteback(node_page))
|
|
set_page_dirty(node_page);
|
|
}
|
|
out_page:
|
|
unlock_page(node_page);
|
|
release_page:
|
|
f2fs_put_page(node_page, 0);
|
|
}
|
|
|
|
static int f2fs_write_node_page(struct page *page,
|
|
struct writeback_control *wbc)
|
|
{
|
|
return __write_node_page(page, false, NULL, wbc, false, FS_NODE_IO);
|
|
}
|
|
|
|
int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode,
|
|
struct writeback_control *wbc, bool atomic)
|
|
{
|
|
pgoff_t index;
|
|
pgoff_t last_idx = ULONG_MAX;
|
|
struct pagevec pvec;
|
|
int ret = 0;
|
|
struct page *last_page = NULL;
|
|
bool marked = false;
|
|
nid_t ino = inode->i_ino;
|
|
int nr_pages;
|
|
|
|
if (atomic) {
|
|
last_page = last_fsync_dnode(sbi, ino);
|
|
if (IS_ERR_OR_NULL(last_page))
|
|
return PTR_ERR_OR_ZERO(last_page);
|
|
}
|
|
retry:
|
|
pagevec_init(&pvec);
|
|
index = 0;
|
|
|
|
while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index,
|
|
PAGECACHE_TAG_DIRTY))) {
|
|
int i;
|
|
|
|
for (i = 0; i < nr_pages; i++) {
|
|
struct page *page = pvec.pages[i];
|
|
bool submitted = false;
|
|
|
|
if (unlikely(f2fs_cp_error(sbi))) {
|
|
f2fs_put_page(last_page, 0);
|
|
pagevec_release(&pvec);
|
|
ret = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
if (!IS_DNODE(page) || !is_cold_node(page))
|
|
continue;
|
|
if (ino_of_node(page) != ino)
|
|
continue;
|
|
|
|
lock_page(page);
|
|
|
|
if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
|
|
continue_unlock:
|
|
unlock_page(page);
|
|
continue;
|
|
}
|
|
if (ino_of_node(page) != ino)
|
|
goto continue_unlock;
|
|
|
|
if (!PageDirty(page) && page != last_page) {
|
|
/* someone wrote it for us */
|
|
goto continue_unlock;
|
|
}
|
|
|
|
f2fs_wait_on_page_writeback(page, NODE, true);
|
|
BUG_ON(PageWriteback(page));
|
|
|
|
set_fsync_mark(page, 0);
|
|
set_dentry_mark(page, 0);
|
|
|
|
if (!atomic || page == last_page) {
|
|
set_fsync_mark(page, 1);
|
|
if (IS_INODE(page)) {
|
|
if (is_inode_flag_set(inode,
|
|
FI_DIRTY_INODE))
|
|
f2fs_update_inode(inode, page);
|
|
set_dentry_mark(page,
|
|
f2fs_need_dentry_mark(sbi, ino));
|
|
}
|
|
/* may be written by other thread */
|
|
if (!PageDirty(page))
|
|
set_page_dirty(page);
|
|
}
|
|
|
|
if (!clear_page_dirty_for_io(page))
|
|
goto continue_unlock;
|
|
|
|
ret = __write_node_page(page, atomic &&
|
|
page == last_page,
|
|
&submitted, wbc, true,
|
|
FS_NODE_IO);
|
|
if (ret) {
|
|
unlock_page(page);
|
|
f2fs_put_page(last_page, 0);
|
|
break;
|
|
} else if (submitted) {
|
|
last_idx = page->index;
|
|
}
|
|
|
|
if (page == last_page) {
|
|
f2fs_put_page(page, 0);
|
|
marked = true;
|
|
break;
|
|
}
|
|
}
|
|
pagevec_release(&pvec);
|
|
cond_resched();
|
|
|
|
if (ret || marked)
|
|
break;
|
|
}
|
|
if (!ret && atomic && !marked) {
|
|
f2fs_msg(sbi->sb, KERN_DEBUG,
|
|
"Retry to write fsync mark: ino=%u, idx=%lx",
|
|
ino, last_page->index);
|
|
lock_page(last_page);
|
|
f2fs_wait_on_page_writeback(last_page, NODE, true);
|
|
set_page_dirty(last_page);
|
|
unlock_page(last_page);
|
|
goto retry;
|
|
}
|
|
out:
|
|
if (last_idx != ULONG_MAX)
|
|
f2fs_submit_merged_write_cond(sbi, NULL, ino, last_idx, NODE);
|
|
return ret ? -EIO: 0;
|
|
}
|
|
|
|
int f2fs_sync_node_pages(struct f2fs_sb_info *sbi,
|
|
struct writeback_control *wbc,
|
|
bool do_balance, enum iostat_type io_type)
|
|
{
|
|
pgoff_t index;
|
|
struct pagevec pvec;
|
|
int step = 0;
|
|
int nwritten = 0;
|
|
int ret = 0;
|
|
int nr_pages, done = 0;
|
|
|
|
pagevec_init(&pvec);
|
|
|
|
next_step:
|
|
index = 0;
|
|
|
|
while (!done && (nr_pages = pagevec_lookup_tag(&pvec,
|
|
NODE_MAPPING(sbi), &index, PAGECACHE_TAG_DIRTY))) {
|
|
int i;
|
|
|
|
for (i = 0; i < nr_pages; i++) {
|
|
struct page *page = pvec.pages[i];
|
|
bool submitted = false;
|
|
|
|
/* give a priority to WB_SYNC threads */
|
|
if (atomic_read(&sbi->wb_sync_req[NODE]) &&
|
|
wbc->sync_mode == WB_SYNC_NONE) {
|
|
done = 1;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* flushing sequence with step:
|
|
* 0. indirect nodes
|
|
* 1. dentry dnodes
|
|
* 2. file dnodes
|
|
*/
|
|
if (step == 0 && IS_DNODE(page))
|
|
continue;
|
|
if (step == 1 && (!IS_DNODE(page) ||
|
|
is_cold_node(page)))
|
|
continue;
|
|
if (step == 2 && (!IS_DNODE(page) ||
|
|
!is_cold_node(page)))
|
|
continue;
|
|
lock_node:
|
|
if (wbc->sync_mode == WB_SYNC_ALL)
|
|
lock_page(page);
|
|
else if (!trylock_page(page))
|
|
continue;
|
|
|
|
if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
|
|
continue_unlock:
|
|
unlock_page(page);
|
|
continue;
|
|
}
|
|
|
|
if (!PageDirty(page)) {
|
|
/* someone wrote it for us */
|
|
goto continue_unlock;
|
|
}
|
|
|
|
/* flush inline_data */
|
|
if (is_inline_node(page)) {
|
|
clear_inline_node(page);
|
|
unlock_page(page);
|
|
flush_inline_data(sbi, ino_of_node(page));
|
|
goto lock_node;
|
|
}
|
|
|
|
f2fs_wait_on_page_writeback(page, NODE, true);
|
|
|
|
BUG_ON(PageWriteback(page));
|
|
if (!clear_page_dirty_for_io(page))
|
|
goto continue_unlock;
|
|
|
|
set_fsync_mark(page, 0);
|
|
set_dentry_mark(page, 0);
|
|
|
|
ret = __write_node_page(page, false, &submitted,
|
|
wbc, do_balance, io_type);
|
|
if (ret)
|
|
unlock_page(page);
|
|
else if (submitted)
|
|
nwritten++;
|
|
|
|
if (--wbc->nr_to_write == 0)
|
|
break;
|
|
}
|
|
pagevec_release(&pvec);
|
|
cond_resched();
|
|
|
|
if (wbc->nr_to_write == 0) {
|
|
step = 2;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (step < 2) {
|
|
step++;
|
|
goto next_step;
|
|
}
|
|
|
|
if (nwritten)
|
|
f2fs_submit_merged_write(sbi, NODE);
|
|
|
|
if (unlikely(f2fs_cp_error(sbi)))
|
|
return -EIO;
|
|
return ret;
|
|
}
|
|
|
|
int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino)
|
|
{
|
|
pgoff_t index = 0;
|
|
struct pagevec pvec;
|
|
int ret2, ret = 0;
|
|
int nr_pages;
|
|
|
|
pagevec_init(&pvec);
|
|
|
|
while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index,
|
|
PAGECACHE_TAG_WRITEBACK))) {
|
|
int i;
|
|
|
|
for (i = 0; i < nr_pages; i++) {
|
|
struct page *page = pvec.pages[i];
|
|
|
|
if (ino && ino_of_node(page) == ino) {
|
|
f2fs_wait_on_page_writeback(page, NODE, true);
|
|
if (TestClearPageError(page))
|
|
ret = -EIO;
|
|
}
|
|
}
|
|
pagevec_release(&pvec);
|
|
cond_resched();
|
|
}
|
|
|
|
ret2 = filemap_check_errors(NODE_MAPPING(sbi));
|
|
if (!ret)
|
|
ret = ret2;
|
|
return ret;
|
|
}
|
|
|
|
static int f2fs_write_node_pages(struct address_space *mapping,
|
|
struct writeback_control *wbc)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_M_SB(mapping);
|
|
struct blk_plug plug;
|
|
long diff;
|
|
|
|
if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
|
|
goto skip_write;
|
|
|
|
/* balancing f2fs's metadata in background */
|
|
f2fs_balance_fs_bg(sbi);
|
|
|
|
/* collect a number of dirty node pages and write together */
|
|
if (get_pages(sbi, F2FS_DIRTY_NODES) < nr_pages_to_skip(sbi, NODE))
|
|
goto skip_write;
|
|
|
|
if (wbc->sync_mode == WB_SYNC_ALL)
|
|
atomic_inc(&sbi->wb_sync_req[NODE]);
|
|
else if (atomic_read(&sbi->wb_sync_req[NODE]))
|
|
goto skip_write;
|
|
|
|
trace_f2fs_writepages(mapping->host, wbc, NODE);
|
|
|
|
diff = nr_pages_to_write(sbi, NODE, wbc);
|
|
blk_start_plug(&plug);
|
|
f2fs_sync_node_pages(sbi, wbc, true, FS_NODE_IO);
|
|
blk_finish_plug(&plug);
|
|
wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff);
|
|
|
|
if (wbc->sync_mode == WB_SYNC_ALL)
|
|
atomic_dec(&sbi->wb_sync_req[NODE]);
|
|
return 0;
|
|
|
|
skip_write:
|
|
wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES);
|
|
trace_f2fs_writepages(mapping->host, wbc, NODE);
|
|
return 0;
|
|
}
|
|
|
|
static int f2fs_set_node_page_dirty(struct page *page)
|
|
{
|
|
trace_f2fs_set_page_dirty(page, NODE);
|
|
|
|
if (!PageUptodate(page))
|
|
SetPageUptodate(page);
|
|
#ifdef CONFIG_F2FS_CHECK_FS
|
|
if (IS_INODE(page))
|
|
f2fs_inode_chksum_set(F2FS_P_SB(page), page);
|
|
#endif
|
|
if (!PageDirty(page)) {
|
|
__set_page_dirty_nobuffers(page);
|
|
inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES);
|
|
SetPagePrivate(page);
|
|
f2fs_trace_pid(page);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Structure of the f2fs node operations
|
|
*/
|
|
const struct address_space_operations f2fs_node_aops = {
|
|
.writepage = f2fs_write_node_page,
|
|
.writepages = f2fs_write_node_pages,
|
|
.set_page_dirty = f2fs_set_node_page_dirty,
|
|
.invalidatepage = f2fs_invalidate_page,
|
|
.releasepage = f2fs_release_page,
|
|
#ifdef CONFIG_MIGRATION
|
|
.migratepage = f2fs_migrate_page,
|
|
#endif
|
|
};
|
|
|
|
static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i,
|
|
nid_t n)
|
|
{
|
|
return radix_tree_lookup(&nm_i->free_nid_root, n);
|
|
}
|
|
|
|
static int __insert_free_nid(struct f2fs_sb_info *sbi,
|
|
struct free_nid *i, enum nid_state state)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
|
|
int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i);
|
|
if (err)
|
|
return err;
|
|
|
|
f2fs_bug_on(sbi, state != i->state);
|
|
nm_i->nid_cnt[state]++;
|
|
if (state == FREE_NID)
|
|
list_add_tail(&i->list, &nm_i->free_nid_list);
|
|
return 0;
|
|
}
|
|
|
|
static void __remove_free_nid(struct f2fs_sb_info *sbi,
|
|
struct free_nid *i, enum nid_state state)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
|
|
f2fs_bug_on(sbi, state != i->state);
|
|
nm_i->nid_cnt[state]--;
|
|
if (state == FREE_NID)
|
|
list_del(&i->list);
|
|
radix_tree_delete(&nm_i->free_nid_root, i->nid);
|
|
}
|
|
|
|
static void __move_free_nid(struct f2fs_sb_info *sbi, struct free_nid *i,
|
|
enum nid_state org_state, enum nid_state dst_state)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
|
|
f2fs_bug_on(sbi, org_state != i->state);
|
|
i->state = dst_state;
|
|
nm_i->nid_cnt[org_state]--;
|
|
nm_i->nid_cnt[dst_state]++;
|
|
|
|
switch (dst_state) {
|
|
case PREALLOC_NID:
|
|
list_del(&i->list);
|
|
break;
|
|
case FREE_NID:
|
|
list_add_tail(&i->list, &nm_i->free_nid_list);
|
|
break;
|
|
default:
|
|
BUG_ON(1);
|
|
}
|
|
}
|
|
|
|
static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid,
|
|
bool set, bool build)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid);
|
|
unsigned int nid_ofs = nid - START_NID(nid);
|
|
|
|
if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap))
|
|
return;
|
|
|
|
if (set) {
|
|
if (test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]))
|
|
return;
|
|
__set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]);
|
|
nm_i->free_nid_count[nat_ofs]++;
|
|
} else {
|
|
if (!test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]))
|
|
return;
|
|
__clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]);
|
|
if (!build)
|
|
nm_i->free_nid_count[nat_ofs]--;
|
|
}
|
|
}
|
|
|
|
/* return if the nid is recognized as free */
|
|
static bool add_free_nid(struct f2fs_sb_info *sbi,
|
|
nid_t nid, bool build, bool update)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
struct free_nid *i, *e;
|
|
struct nat_entry *ne;
|
|
int err = -EINVAL;
|
|
bool ret = false;
|
|
|
|
/* 0 nid should not be used */
|
|
if (unlikely(nid == 0))
|
|
return false;
|
|
|
|
i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS);
|
|
i->nid = nid;
|
|
i->state = FREE_NID;
|
|
|
|
radix_tree_preload(GFP_NOFS | __GFP_NOFAIL);
|
|
|
|
spin_lock(&nm_i->nid_list_lock);
|
|
|
|
if (build) {
|
|
/*
|
|
* Thread A Thread B
|
|
* - f2fs_create
|
|
* - f2fs_new_inode
|
|
* - f2fs_alloc_nid
|
|
* - __insert_nid_to_list(PREALLOC_NID)
|
|
* - f2fs_balance_fs_bg
|
|
* - f2fs_build_free_nids
|
|
* - __f2fs_build_free_nids
|
|
* - scan_nat_page
|
|
* - add_free_nid
|
|
* - __lookup_nat_cache
|
|
* - f2fs_add_link
|
|
* - f2fs_init_inode_metadata
|
|
* - f2fs_new_inode_page
|
|
* - f2fs_new_node_page
|
|
* - set_node_addr
|
|
* - f2fs_alloc_nid_done
|
|
* - __remove_nid_from_list(PREALLOC_NID)
|
|
* - __insert_nid_to_list(FREE_NID)
|
|
*/
|
|
ne = __lookup_nat_cache(nm_i, nid);
|
|
if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) ||
|
|
nat_get_blkaddr(ne) != NULL_ADDR))
|
|
goto err_out;
|
|
|
|
e = __lookup_free_nid_list(nm_i, nid);
|
|
if (e) {
|
|
if (e->state == FREE_NID)
|
|
ret = true;
|
|
goto err_out;
|
|
}
|
|
}
|
|
ret = true;
|
|
err = __insert_free_nid(sbi, i, FREE_NID);
|
|
err_out:
|
|
if (update) {
|
|
update_free_nid_bitmap(sbi, nid, ret, build);
|
|
if (!build)
|
|
nm_i->available_nids++;
|
|
}
|
|
spin_unlock(&nm_i->nid_list_lock);
|
|
radix_tree_preload_end();
|
|
|
|
if (err)
|
|
kmem_cache_free(free_nid_slab, i);
|
|
return ret;
|
|
}
|
|
|
|
static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
struct free_nid *i;
|
|
bool need_free = false;
|
|
|
|
spin_lock(&nm_i->nid_list_lock);
|
|
i = __lookup_free_nid_list(nm_i, nid);
|
|
if (i && i->state == FREE_NID) {
|
|
__remove_free_nid(sbi, i, FREE_NID);
|
|
need_free = true;
|
|
}
|
|
spin_unlock(&nm_i->nid_list_lock);
|
|
|
|
if (need_free)
|
|
kmem_cache_free(free_nid_slab, i);
|
|
}
|
|
|
|
static int scan_nat_page(struct f2fs_sb_info *sbi,
|
|
struct page *nat_page, nid_t start_nid)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
struct f2fs_nat_block *nat_blk = page_address(nat_page);
|
|
block_t blk_addr;
|
|
unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid);
|
|
int i;
|
|
|
|
__set_bit_le(nat_ofs, nm_i->nat_block_bitmap);
|
|
|
|
i = start_nid % NAT_ENTRY_PER_BLOCK;
|
|
|
|
for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) {
|
|
if (unlikely(start_nid >= nm_i->max_nid))
|
|
break;
|
|
|
|
blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr);
|
|
|
|
if (blk_addr == NEW_ADDR)
|
|
return -EINVAL;
|
|
|
|
if (blk_addr == NULL_ADDR) {
|
|
add_free_nid(sbi, start_nid, true, true);
|
|
} else {
|
|
spin_lock(&NM_I(sbi)->nid_list_lock);
|
|
update_free_nid_bitmap(sbi, start_nid, false, true);
|
|
spin_unlock(&NM_I(sbi)->nid_list_lock);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void scan_curseg_cache(struct f2fs_sb_info *sbi)
|
|
{
|
|
struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
|
|
struct f2fs_journal *journal = curseg->journal;
|
|
int i;
|
|
|
|
down_read(&curseg->journal_rwsem);
|
|
for (i = 0; i < nats_in_cursum(journal); i++) {
|
|
block_t addr;
|
|
nid_t nid;
|
|
|
|
addr = le32_to_cpu(nat_in_journal(journal, i).block_addr);
|
|
nid = le32_to_cpu(nid_in_journal(journal, i));
|
|
if (addr == NULL_ADDR)
|
|
add_free_nid(sbi, nid, true, false);
|
|
else
|
|
remove_free_nid(sbi, nid);
|
|
}
|
|
up_read(&curseg->journal_rwsem);
|
|
}
|
|
|
|
static void scan_free_nid_bits(struct f2fs_sb_info *sbi)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
unsigned int i, idx;
|
|
nid_t nid;
|
|
|
|
down_read(&nm_i->nat_tree_lock);
|
|
|
|
for (i = 0; i < nm_i->nat_blocks; i++) {
|
|
if (!test_bit_le(i, nm_i->nat_block_bitmap))
|
|
continue;
|
|
if (!nm_i->free_nid_count[i])
|
|
continue;
|
|
for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) {
|
|
idx = find_next_bit_le(nm_i->free_nid_bitmap[i],
|
|
NAT_ENTRY_PER_BLOCK, idx);
|
|
if (idx >= NAT_ENTRY_PER_BLOCK)
|
|
break;
|
|
|
|
nid = i * NAT_ENTRY_PER_BLOCK + idx;
|
|
add_free_nid(sbi, nid, true, false);
|
|
|
|
if (nm_i->nid_cnt[FREE_NID] >= MAX_FREE_NIDS)
|
|
goto out;
|
|
}
|
|
}
|
|
out:
|
|
scan_curseg_cache(sbi);
|
|
|
|
up_read(&nm_i->nat_tree_lock);
|
|
}
|
|
|
|
static int __f2fs_build_free_nids(struct f2fs_sb_info *sbi,
|
|
bool sync, bool mount)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
int i = 0, ret;
|
|
nid_t nid = nm_i->next_scan_nid;
|
|
|
|
if (unlikely(nid >= nm_i->max_nid))
|
|
nid = 0;
|
|
|
|
/* Enough entries */
|
|
if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK)
|
|
return 0;
|
|
|
|
if (!sync && !f2fs_available_free_memory(sbi, FREE_NIDS))
|
|
return 0;
|
|
|
|
if (!mount) {
|
|
/* try to find free nids in free_nid_bitmap */
|
|
scan_free_nid_bits(sbi);
|
|
|
|
if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK)
|
|
return 0;
|
|
}
|
|
|
|
/* readahead nat pages to be scanned */
|
|
f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES,
|
|
META_NAT, true);
|
|
|
|
down_read(&nm_i->nat_tree_lock);
|
|
|
|
while (1) {
|
|
if (!test_bit_le(NAT_BLOCK_OFFSET(nid),
|
|
nm_i->nat_block_bitmap)) {
|
|
struct page *page = get_current_nat_page(sbi, nid);
|
|
|
|
ret = scan_nat_page(sbi, page, nid);
|
|
f2fs_put_page(page, 1);
|
|
|
|
if (ret) {
|
|
up_read(&nm_i->nat_tree_lock);
|
|
f2fs_bug_on(sbi, !mount);
|
|
f2fs_msg(sbi->sb, KERN_ERR,
|
|
"NAT is corrupt, run fsck to fix it");
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK));
|
|
if (unlikely(nid >= nm_i->max_nid))
|
|
nid = 0;
|
|
|
|
if (++i >= FREE_NID_PAGES)
|
|
break;
|
|
}
|
|
|
|
/* go to the next free nat pages to find free nids abundantly */
|
|
nm_i->next_scan_nid = nid;
|
|
|
|
/* find free nids from current sum_pages */
|
|
scan_curseg_cache(sbi);
|
|
|
|
up_read(&nm_i->nat_tree_lock);
|
|
|
|
f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid),
|
|
nm_i->ra_nid_pages, META_NAT, false);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount)
|
|
{
|
|
int ret;
|
|
|
|
mutex_lock(&NM_I(sbi)->build_lock);
|
|
ret = __f2fs_build_free_nids(sbi, sync, mount);
|
|
mutex_unlock(&NM_I(sbi)->build_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* If this function returns success, caller can obtain a new nid
|
|
* from second parameter of this function.
|
|
* The returned nid could be used ino as well as nid when inode is created.
|
|
*/
|
|
bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
struct free_nid *i = NULL;
|
|
retry:
|
|
#ifdef CONFIG_F2FS_FAULT_INJECTION
|
|
if (time_to_inject(sbi, FAULT_ALLOC_NID)) {
|
|
f2fs_show_injection_info(FAULT_ALLOC_NID);
|
|
return false;
|
|
}
|
|
#endif
|
|
spin_lock(&nm_i->nid_list_lock);
|
|
|
|
if (unlikely(nm_i->available_nids == 0)) {
|
|
spin_unlock(&nm_i->nid_list_lock);
|
|
return false;
|
|
}
|
|
|
|
/* We should not use stale free nids created by f2fs_build_free_nids */
|
|
if (nm_i->nid_cnt[FREE_NID] && !on_f2fs_build_free_nids(nm_i)) {
|
|
f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list));
|
|
i = list_first_entry(&nm_i->free_nid_list,
|
|
struct free_nid, list);
|
|
*nid = i->nid;
|
|
|
|
__move_free_nid(sbi, i, FREE_NID, PREALLOC_NID);
|
|
nm_i->available_nids--;
|
|
|
|
update_free_nid_bitmap(sbi, *nid, false, false);
|
|
|
|
spin_unlock(&nm_i->nid_list_lock);
|
|
return true;
|
|
}
|
|
spin_unlock(&nm_i->nid_list_lock);
|
|
|
|
/* Let's scan nat pages and its caches to get free nids */
|
|
f2fs_build_free_nids(sbi, true, false);
|
|
goto retry;
|
|
}
|
|
|
|
/*
|
|
* f2fs_alloc_nid() should be called prior to this function.
|
|
*/
|
|
void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
struct free_nid *i;
|
|
|
|
spin_lock(&nm_i->nid_list_lock);
|
|
i = __lookup_free_nid_list(nm_i, nid);
|
|
f2fs_bug_on(sbi, !i);
|
|
__remove_free_nid(sbi, i, PREALLOC_NID);
|
|
spin_unlock(&nm_i->nid_list_lock);
|
|
|
|
kmem_cache_free(free_nid_slab, i);
|
|
}
|
|
|
|
/*
|
|
* f2fs_alloc_nid() should be called prior to this function.
|
|
*/
|
|
void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
struct free_nid *i;
|
|
bool need_free = false;
|
|
|
|
if (!nid)
|
|
return;
|
|
|
|
spin_lock(&nm_i->nid_list_lock);
|
|
i = __lookup_free_nid_list(nm_i, nid);
|
|
f2fs_bug_on(sbi, !i);
|
|
|
|
if (!f2fs_available_free_memory(sbi, FREE_NIDS)) {
|
|
__remove_free_nid(sbi, i, PREALLOC_NID);
|
|
need_free = true;
|
|
} else {
|
|
__move_free_nid(sbi, i, PREALLOC_NID, FREE_NID);
|
|
}
|
|
|
|
nm_i->available_nids++;
|
|
|
|
update_free_nid_bitmap(sbi, nid, true, false);
|
|
|
|
spin_unlock(&nm_i->nid_list_lock);
|
|
|
|
if (need_free)
|
|
kmem_cache_free(free_nid_slab, i);
|
|
}
|
|
|
|
int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
struct free_nid *i, *next;
|
|
int nr = nr_shrink;
|
|
|
|
if (nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS)
|
|
return 0;
|
|
|
|
if (!mutex_trylock(&nm_i->build_lock))
|
|
return 0;
|
|
|
|
spin_lock(&nm_i->nid_list_lock);
|
|
list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) {
|
|
if (nr_shrink <= 0 ||
|
|
nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS)
|
|
break;
|
|
|
|
__remove_free_nid(sbi, i, FREE_NID);
|
|
kmem_cache_free(free_nid_slab, i);
|
|
nr_shrink--;
|
|
}
|
|
spin_unlock(&nm_i->nid_list_lock);
|
|
mutex_unlock(&nm_i->build_lock);
|
|
|
|
return nr - nr_shrink;
|
|
}
|
|
|
|
void f2fs_recover_inline_xattr(struct inode *inode, struct page *page)
|
|
{
|
|
void *src_addr, *dst_addr;
|
|
size_t inline_size;
|
|
struct page *ipage;
|
|
struct f2fs_inode *ri;
|
|
|
|
ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
|
|
f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage));
|
|
|
|
ri = F2FS_INODE(page);
|
|
if (ri->i_inline & F2FS_INLINE_XATTR) {
|
|
set_inode_flag(inode, FI_INLINE_XATTR);
|
|
} else {
|
|
clear_inode_flag(inode, FI_INLINE_XATTR);
|
|
goto update_inode;
|
|
}
|
|
|
|
dst_addr = inline_xattr_addr(inode, ipage);
|
|
src_addr = inline_xattr_addr(inode, page);
|
|
inline_size = inline_xattr_size(inode);
|
|
|
|
f2fs_wait_on_page_writeback(ipage, NODE, true);
|
|
memcpy(dst_addr, src_addr, inline_size);
|
|
update_inode:
|
|
f2fs_update_inode(inode, ipage);
|
|
f2fs_put_page(ipage, 1);
|
|
}
|
|
|
|
int f2fs_recover_xattr_data(struct inode *inode, struct page *page)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
|
nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid;
|
|
nid_t new_xnid;
|
|
struct dnode_of_data dn;
|
|
struct node_info ni;
|
|
struct page *xpage;
|
|
|
|
if (!prev_xnid)
|
|
goto recover_xnid;
|
|
|
|
/* 1: invalidate the previous xattr nid */
|
|
f2fs_get_node_info(sbi, prev_xnid, &ni);
|
|
f2fs_invalidate_blocks(sbi, ni.blk_addr);
|
|
dec_valid_node_count(sbi, inode, false);
|
|
set_node_addr(sbi, &ni, NULL_ADDR, false);
|
|
|
|
recover_xnid:
|
|
/* 2: update xattr nid in inode */
|
|
if (!f2fs_alloc_nid(sbi, &new_xnid))
|
|
return -ENOSPC;
|
|
|
|
set_new_dnode(&dn, inode, NULL, NULL, new_xnid);
|
|
xpage = f2fs_new_node_page(&dn, XATTR_NODE_OFFSET);
|
|
if (IS_ERR(xpage)) {
|
|
f2fs_alloc_nid_failed(sbi, new_xnid);
|
|
return PTR_ERR(xpage);
|
|
}
|
|
|
|
f2fs_alloc_nid_done(sbi, new_xnid);
|
|
f2fs_update_inode_page(inode);
|
|
|
|
/* 3: update and set xattr node page dirty */
|
|
memcpy(F2FS_NODE(xpage), F2FS_NODE(page), VALID_XATTR_BLOCK_SIZE);
|
|
|
|
set_page_dirty(xpage);
|
|
f2fs_put_page(xpage, 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page)
|
|
{
|
|
struct f2fs_inode *src, *dst;
|
|
nid_t ino = ino_of_node(page);
|
|
struct node_info old_ni, new_ni;
|
|
struct page *ipage;
|
|
|
|
f2fs_get_node_info(sbi, ino, &old_ni);
|
|
|
|
if (unlikely(old_ni.blk_addr != NULL_ADDR))
|
|
return -EINVAL;
|
|
retry:
|
|
ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false);
|
|
if (!ipage) {
|
|
congestion_wait(BLK_RW_ASYNC, HZ/50);
|
|
goto retry;
|
|
}
|
|
|
|
/* Should not use this inode from free nid list */
|
|
remove_free_nid(sbi, ino);
|
|
|
|
if (!PageUptodate(ipage))
|
|
SetPageUptodate(ipage);
|
|
fill_node_footer(ipage, ino, ino, 0, true);
|
|
set_cold_node(page, false);
|
|
|
|
src = F2FS_INODE(page);
|
|
dst = F2FS_INODE(ipage);
|
|
|
|
memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src);
|
|
dst->i_size = 0;
|
|
dst->i_blocks = cpu_to_le64(1);
|
|
dst->i_links = cpu_to_le32(1);
|
|
dst->i_xattr_nid = 0;
|
|
dst->i_inline = src->i_inline & (F2FS_INLINE_XATTR | F2FS_EXTRA_ATTR);
|
|
if (dst->i_inline & F2FS_EXTRA_ATTR) {
|
|
dst->i_extra_isize = src->i_extra_isize;
|
|
|
|
if (f2fs_sb_has_flexible_inline_xattr(sbi->sb) &&
|
|
F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize),
|
|
i_inline_xattr_size))
|
|
dst->i_inline_xattr_size = src->i_inline_xattr_size;
|
|
|
|
if (f2fs_sb_has_project_quota(sbi->sb) &&
|
|
F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize),
|
|
i_projid))
|
|
dst->i_projid = src->i_projid;
|
|
}
|
|
|
|
new_ni = old_ni;
|
|
new_ni.ino = ino;
|
|
|
|
if (unlikely(inc_valid_node_count(sbi, NULL, true)))
|
|
WARN_ON(1);
|
|
set_node_addr(sbi, &new_ni, NEW_ADDR, false);
|
|
inc_valid_inode_count(sbi);
|
|
set_page_dirty(ipage);
|
|
f2fs_put_page(ipage, 1);
|
|
return 0;
|
|
}
|
|
|
|
void f2fs_restore_node_summary(struct f2fs_sb_info *sbi,
|
|
unsigned int segno, struct f2fs_summary_block *sum)
|
|
{
|
|
struct f2fs_node *rn;
|
|
struct f2fs_summary *sum_entry;
|
|
block_t addr;
|
|
int i, idx, last_offset, nrpages;
|
|
|
|
/* scan the node segment */
|
|
last_offset = sbi->blocks_per_seg;
|
|
addr = START_BLOCK(sbi, segno);
|
|
sum_entry = &sum->entries[0];
|
|
|
|
for (i = 0; i < last_offset; i += nrpages, addr += nrpages) {
|
|
nrpages = min(last_offset - i, BIO_MAX_PAGES);
|
|
|
|
/* readahead node pages */
|
|
f2fs_ra_meta_pages(sbi, addr, nrpages, META_POR, true);
|
|
|
|
for (idx = addr; idx < addr + nrpages; idx++) {
|
|
struct page *page = f2fs_get_tmp_page(sbi, idx);
|
|
|
|
rn = F2FS_NODE(page);
|
|
sum_entry->nid = rn->footer.nid;
|
|
sum_entry->version = 0;
|
|
sum_entry->ofs_in_node = 0;
|
|
sum_entry++;
|
|
f2fs_put_page(page, 1);
|
|
}
|
|
|
|
invalidate_mapping_pages(META_MAPPING(sbi), addr,
|
|
addr + nrpages);
|
|
}
|
|
}
|
|
|
|
static void remove_nats_in_journal(struct f2fs_sb_info *sbi)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
|
|
struct f2fs_journal *journal = curseg->journal;
|
|
int i;
|
|
|
|
down_write(&curseg->journal_rwsem);
|
|
for (i = 0; i < nats_in_cursum(journal); i++) {
|
|
struct nat_entry *ne;
|
|
struct f2fs_nat_entry raw_ne;
|
|
nid_t nid = le32_to_cpu(nid_in_journal(journal, i));
|
|
|
|
raw_ne = nat_in_journal(journal, i);
|
|
|
|
ne = __lookup_nat_cache(nm_i, nid);
|
|
if (!ne) {
|
|
ne = __alloc_nat_entry(nid, true);
|
|
__init_nat_entry(nm_i, ne, &raw_ne, true);
|
|
}
|
|
|
|
/*
|
|
* if a free nat in journal has not been used after last
|
|
* checkpoint, we should remove it from available nids,
|
|
* since later we will add it again.
|
|
*/
|
|
if (!get_nat_flag(ne, IS_DIRTY) &&
|
|
le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) {
|
|
spin_lock(&nm_i->nid_list_lock);
|
|
nm_i->available_nids--;
|
|
spin_unlock(&nm_i->nid_list_lock);
|
|
}
|
|
|
|
__set_nat_cache_dirty(nm_i, ne);
|
|
}
|
|
update_nats_in_cursum(journal, -i);
|
|
up_write(&curseg->journal_rwsem);
|
|
}
|
|
|
|
static void __adjust_nat_entry_set(struct nat_entry_set *nes,
|
|
struct list_head *head, int max)
|
|
{
|
|
struct nat_entry_set *cur;
|
|
|
|
if (nes->entry_cnt >= max)
|
|
goto add_out;
|
|
|
|
list_for_each_entry(cur, head, set_list) {
|
|
if (cur->entry_cnt >= nes->entry_cnt) {
|
|
list_add(&nes->set_list, cur->set_list.prev);
|
|
return;
|
|
}
|
|
}
|
|
add_out:
|
|
list_add_tail(&nes->set_list, head);
|
|
}
|
|
|
|
static void __update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid,
|
|
struct page *page)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK;
|
|
struct f2fs_nat_block *nat_blk = page_address(page);
|
|
int valid = 0;
|
|
int i = 0;
|
|
|
|
if (!enabled_nat_bits(sbi, NULL))
|
|
return;
|
|
|
|
if (nat_index == 0) {
|
|
valid = 1;
|
|
i = 1;
|
|
}
|
|
for (; i < NAT_ENTRY_PER_BLOCK; i++) {
|
|
if (nat_blk->entries[i].block_addr != NULL_ADDR)
|
|
valid++;
|
|
}
|
|
if (valid == 0) {
|
|
__set_bit_le(nat_index, nm_i->empty_nat_bits);
|
|
__clear_bit_le(nat_index, nm_i->full_nat_bits);
|
|
return;
|
|
}
|
|
|
|
__clear_bit_le(nat_index, nm_i->empty_nat_bits);
|
|
if (valid == NAT_ENTRY_PER_BLOCK)
|
|
__set_bit_le(nat_index, nm_i->full_nat_bits);
|
|
else
|
|
__clear_bit_le(nat_index, nm_i->full_nat_bits);
|
|
}
|
|
|
|
static void __flush_nat_entry_set(struct f2fs_sb_info *sbi,
|
|
struct nat_entry_set *set, struct cp_control *cpc)
|
|
{
|
|
struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
|
|
struct f2fs_journal *journal = curseg->journal;
|
|
nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK;
|
|
bool to_journal = true;
|
|
struct f2fs_nat_block *nat_blk;
|
|
struct nat_entry *ne, *cur;
|
|
struct page *page = NULL;
|
|
|
|
/*
|
|
* there are two steps to flush nat entries:
|
|
* #1, flush nat entries to journal in current hot data summary block.
|
|
* #2, flush nat entries to nat page.
|
|
*/
|
|
if (enabled_nat_bits(sbi, cpc) ||
|
|
!__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL))
|
|
to_journal = false;
|
|
|
|
if (to_journal) {
|
|
down_write(&curseg->journal_rwsem);
|
|
} else {
|
|
page = get_next_nat_page(sbi, start_nid);
|
|
nat_blk = page_address(page);
|
|
f2fs_bug_on(sbi, !nat_blk);
|
|
}
|
|
|
|
/* flush dirty nats in nat entry set */
|
|
list_for_each_entry_safe(ne, cur, &set->entry_list, list) {
|
|
struct f2fs_nat_entry *raw_ne;
|
|
nid_t nid = nat_get_nid(ne);
|
|
int offset;
|
|
|
|
f2fs_bug_on(sbi, nat_get_blkaddr(ne) == NEW_ADDR);
|
|
|
|
if (to_journal) {
|
|
offset = f2fs_lookup_journal_in_cursum(journal,
|
|
NAT_JOURNAL, nid, 1);
|
|
f2fs_bug_on(sbi, offset < 0);
|
|
raw_ne = &nat_in_journal(journal, offset);
|
|
nid_in_journal(journal, offset) = cpu_to_le32(nid);
|
|
} else {
|
|
raw_ne = &nat_blk->entries[nid - start_nid];
|
|
}
|
|
raw_nat_from_node_info(raw_ne, &ne->ni);
|
|
nat_reset_flag(ne);
|
|
__clear_nat_cache_dirty(NM_I(sbi), set, ne);
|
|
if (nat_get_blkaddr(ne) == NULL_ADDR) {
|
|
add_free_nid(sbi, nid, false, true);
|
|
} else {
|
|
spin_lock(&NM_I(sbi)->nid_list_lock);
|
|
update_free_nid_bitmap(sbi, nid, false, false);
|
|
spin_unlock(&NM_I(sbi)->nid_list_lock);
|
|
}
|
|
}
|
|
|
|
if (to_journal) {
|
|
up_write(&curseg->journal_rwsem);
|
|
} else {
|
|
__update_nat_bits(sbi, start_nid, page);
|
|
f2fs_put_page(page, 1);
|
|
}
|
|
|
|
/* Allow dirty nats by node block allocation in write_begin */
|
|
if (!set->entry_cnt) {
|
|
radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set);
|
|
kmem_cache_free(nat_entry_set_slab, set);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* This function is called during the checkpointing process.
|
|
*/
|
|
void f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
|
|
struct f2fs_journal *journal = curseg->journal;
|
|
struct nat_entry_set *setvec[SETVEC_SIZE];
|
|
struct nat_entry_set *set, *tmp;
|
|
unsigned int found;
|
|
nid_t set_idx = 0;
|
|
LIST_HEAD(sets);
|
|
|
|
/* during unmount, let's flush nat_bits before checking dirty_nat_cnt */
|
|
if (enabled_nat_bits(sbi, cpc)) {
|
|
down_write(&nm_i->nat_tree_lock);
|
|
remove_nats_in_journal(sbi);
|
|
up_write(&nm_i->nat_tree_lock);
|
|
}
|
|
|
|
if (!nm_i->dirty_nat_cnt)
|
|
return;
|
|
|
|
down_write(&nm_i->nat_tree_lock);
|
|
|
|
/*
|
|
* if there are no enough space in journal to store dirty nat
|
|
* entries, remove all entries from journal and merge them
|
|
* into nat entry set.
|
|
*/
|
|
if (enabled_nat_bits(sbi, cpc) ||
|
|
!__has_cursum_space(journal, nm_i->dirty_nat_cnt, NAT_JOURNAL))
|
|
remove_nats_in_journal(sbi);
|
|
|
|
while ((found = __gang_lookup_nat_set(nm_i,
|
|
set_idx, SETVEC_SIZE, setvec))) {
|
|
unsigned idx;
|
|
set_idx = setvec[found - 1]->set + 1;
|
|
for (idx = 0; idx < found; idx++)
|
|
__adjust_nat_entry_set(setvec[idx], &sets,
|
|
MAX_NAT_JENTRIES(journal));
|
|
}
|
|
|
|
/* flush dirty nats in nat entry set */
|
|
list_for_each_entry_safe(set, tmp, &sets, set_list)
|
|
__flush_nat_entry_set(sbi, set, cpc);
|
|
|
|
up_write(&nm_i->nat_tree_lock);
|
|
/* Allow dirty nats by node block allocation in write_begin */
|
|
}
|
|
|
|
static int __get_nat_bitmaps(struct f2fs_sb_info *sbi)
|
|
{
|
|
struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE;
|
|
unsigned int i;
|
|
__u64 cp_ver = cur_cp_version(ckpt);
|
|
block_t nat_bits_addr;
|
|
|
|
if (!enabled_nat_bits(sbi, NULL))
|
|
return 0;
|
|
|
|
nm_i->nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8);
|
|
nm_i->nat_bits = f2fs_kzalloc(sbi,
|
|
nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, GFP_KERNEL);
|
|
if (!nm_i->nat_bits)
|
|
return -ENOMEM;
|
|
|
|
nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg -
|
|
nm_i->nat_bits_blocks;
|
|
for (i = 0; i < nm_i->nat_bits_blocks; i++) {
|
|
struct page *page = f2fs_get_meta_page(sbi, nat_bits_addr++);
|
|
|
|
memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS),
|
|
page_address(page), F2FS_BLKSIZE);
|
|
f2fs_put_page(page, 1);
|
|
}
|
|
|
|
cp_ver |= (cur_cp_crc(ckpt) << 32);
|
|
if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) {
|
|
disable_nat_bits(sbi, true);
|
|
return 0;
|
|
}
|
|
|
|
nm_i->full_nat_bits = nm_i->nat_bits + 8;
|
|
nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes;
|
|
|
|
f2fs_msg(sbi->sb, KERN_NOTICE, "Found nat_bits in checkpoint");
|
|
return 0;
|
|
}
|
|
|
|
static inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
unsigned int i = 0;
|
|
nid_t nid, last_nid;
|
|
|
|
if (!enabled_nat_bits(sbi, NULL))
|
|
return;
|
|
|
|
for (i = 0; i < nm_i->nat_blocks; i++) {
|
|
i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i);
|
|
if (i >= nm_i->nat_blocks)
|
|
break;
|
|
|
|
__set_bit_le(i, nm_i->nat_block_bitmap);
|
|
|
|
nid = i * NAT_ENTRY_PER_BLOCK;
|
|
last_nid = nid + NAT_ENTRY_PER_BLOCK;
|
|
|
|
spin_lock(&NM_I(sbi)->nid_list_lock);
|
|
for (; nid < last_nid; nid++)
|
|
update_free_nid_bitmap(sbi, nid, true, true);
|
|
spin_unlock(&NM_I(sbi)->nid_list_lock);
|
|
}
|
|
|
|
for (i = 0; i < nm_i->nat_blocks; i++) {
|
|
i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i);
|
|
if (i >= nm_i->nat_blocks)
|
|
break;
|
|
|
|
__set_bit_le(i, nm_i->nat_block_bitmap);
|
|
}
|
|
}
|
|
|
|
static int init_node_manager(struct f2fs_sb_info *sbi)
|
|
{
|
|
struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi);
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
unsigned char *version_bitmap;
|
|
unsigned int nat_segs;
|
|
int err;
|
|
|
|
nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr);
|
|
|
|
/* segment_count_nat includes pair segment so divide to 2. */
|
|
nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1;
|
|
nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg);
|
|
nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks;
|
|
|
|
/* not used nids: 0, node, meta, (and root counted as valid node) */
|
|
nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count -
|
|
sbi->nquota_files - F2FS_RESERVED_NODE_NUM;
|
|
nm_i->nid_cnt[FREE_NID] = 0;
|
|
nm_i->nid_cnt[PREALLOC_NID] = 0;
|
|
nm_i->nat_cnt = 0;
|
|
nm_i->ram_thresh = DEF_RAM_THRESHOLD;
|
|
nm_i->ra_nid_pages = DEF_RA_NID_PAGES;
|
|
nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD;
|
|
|
|
INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC);
|
|
INIT_LIST_HEAD(&nm_i->free_nid_list);
|
|
INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO);
|
|
INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO);
|
|
INIT_LIST_HEAD(&nm_i->nat_entries);
|
|
|
|
mutex_init(&nm_i->build_lock);
|
|
spin_lock_init(&nm_i->nid_list_lock);
|
|
init_rwsem(&nm_i->nat_tree_lock);
|
|
|
|
nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid);
|
|
nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP);
|
|
version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP);
|
|
if (!version_bitmap)
|
|
return -EFAULT;
|
|
|
|
nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size,
|
|
GFP_KERNEL);
|
|
if (!nm_i->nat_bitmap)
|
|
return -ENOMEM;
|
|
|
|
err = __get_nat_bitmaps(sbi);
|
|
if (err)
|
|
return err;
|
|
|
|
#ifdef CONFIG_F2FS_CHECK_FS
|
|
nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size,
|
|
GFP_KERNEL);
|
|
if (!nm_i->nat_bitmap_mir)
|
|
return -ENOMEM;
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int init_free_nid_cache(struct f2fs_sb_info *sbi)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
int i;
|
|
|
|
nm_i->free_nid_bitmap =
|
|
f2fs_kzalloc(sbi, array_size(sizeof(unsigned char *),
|
|
nm_i->nat_blocks),
|
|
GFP_KERNEL);
|
|
if (!nm_i->free_nid_bitmap)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < nm_i->nat_blocks; i++) {
|
|
nm_i->free_nid_bitmap[i] = f2fs_kvzalloc(sbi,
|
|
f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK), GFP_KERNEL);
|
|
if (!nm_i->free_nid_bitmap[i])
|
|
return -ENOMEM;
|
|
}
|
|
|
|
nm_i->nat_block_bitmap = f2fs_kvzalloc(sbi, nm_i->nat_blocks / 8,
|
|
GFP_KERNEL);
|
|
if (!nm_i->nat_block_bitmap)
|
|
return -ENOMEM;
|
|
|
|
nm_i->free_nid_count =
|
|
f2fs_kvzalloc(sbi, array_size(sizeof(unsigned short),
|
|
nm_i->nat_blocks),
|
|
GFP_KERNEL);
|
|
if (!nm_i->free_nid_count)
|
|
return -ENOMEM;
|
|
return 0;
|
|
}
|
|
|
|
int f2fs_build_node_manager(struct f2fs_sb_info *sbi)
|
|
{
|
|
int err;
|
|
|
|
sbi->nm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_nm_info),
|
|
GFP_KERNEL);
|
|
if (!sbi->nm_info)
|
|
return -ENOMEM;
|
|
|
|
err = init_node_manager(sbi);
|
|
if (err)
|
|
return err;
|
|
|
|
err = init_free_nid_cache(sbi);
|
|
if (err)
|
|
return err;
|
|
|
|
/* load free nid status from nat_bits table */
|
|
load_free_nid_bitmap(sbi);
|
|
|
|
return f2fs_build_free_nids(sbi, true, true);
|
|
}
|
|
|
|
void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi)
|
|
{
|
|
struct f2fs_nm_info *nm_i = NM_I(sbi);
|
|
struct free_nid *i, *next_i;
|
|
struct nat_entry *natvec[NATVEC_SIZE];
|
|
struct nat_entry_set *setvec[SETVEC_SIZE];
|
|
nid_t nid = 0;
|
|
unsigned int found;
|
|
|
|
if (!nm_i)
|
|
return;
|
|
|
|
/* destroy free nid list */
|
|
spin_lock(&nm_i->nid_list_lock);
|
|
list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) {
|
|
__remove_free_nid(sbi, i, FREE_NID);
|
|
spin_unlock(&nm_i->nid_list_lock);
|
|
kmem_cache_free(free_nid_slab, i);
|
|
spin_lock(&nm_i->nid_list_lock);
|
|
}
|
|
f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID]);
|
|
f2fs_bug_on(sbi, nm_i->nid_cnt[PREALLOC_NID]);
|
|
f2fs_bug_on(sbi, !list_empty(&nm_i->free_nid_list));
|
|
spin_unlock(&nm_i->nid_list_lock);
|
|
|
|
/* destroy nat cache */
|
|
down_write(&nm_i->nat_tree_lock);
|
|
while ((found = __gang_lookup_nat_cache(nm_i,
|
|
nid, NATVEC_SIZE, natvec))) {
|
|
unsigned idx;
|
|
|
|
nid = nat_get_nid(natvec[found - 1]) + 1;
|
|
for (idx = 0; idx < found; idx++)
|
|
__del_from_nat_cache(nm_i, natvec[idx]);
|
|
}
|
|
f2fs_bug_on(sbi, nm_i->nat_cnt);
|
|
|
|
/* destroy nat set cache */
|
|
nid = 0;
|
|
while ((found = __gang_lookup_nat_set(nm_i,
|
|
nid, SETVEC_SIZE, setvec))) {
|
|
unsigned idx;
|
|
|
|
nid = setvec[found - 1]->set + 1;
|
|
for (idx = 0; idx < found; idx++) {
|
|
/* entry_cnt is not zero, when cp_error was occurred */
|
|
f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list));
|
|
radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set);
|
|
kmem_cache_free(nat_entry_set_slab, setvec[idx]);
|
|
}
|
|
}
|
|
up_write(&nm_i->nat_tree_lock);
|
|
|
|
kvfree(nm_i->nat_block_bitmap);
|
|
if (nm_i->free_nid_bitmap) {
|
|
int i;
|
|
|
|
for (i = 0; i < nm_i->nat_blocks; i++)
|
|
kvfree(nm_i->free_nid_bitmap[i]);
|
|
kfree(nm_i->free_nid_bitmap);
|
|
}
|
|
kvfree(nm_i->free_nid_count);
|
|
|
|
kfree(nm_i->nat_bitmap);
|
|
kfree(nm_i->nat_bits);
|
|
#ifdef CONFIG_F2FS_CHECK_FS
|
|
kfree(nm_i->nat_bitmap_mir);
|
|
#endif
|
|
sbi->nm_info = NULL;
|
|
kfree(nm_i);
|
|
}
|
|
|
|
int __init f2fs_create_node_manager_caches(void)
|
|
{
|
|
nat_entry_slab = f2fs_kmem_cache_create("nat_entry",
|
|
sizeof(struct nat_entry));
|
|
if (!nat_entry_slab)
|
|
goto fail;
|
|
|
|
free_nid_slab = f2fs_kmem_cache_create("free_nid",
|
|
sizeof(struct free_nid));
|
|
if (!free_nid_slab)
|
|
goto destroy_nat_entry;
|
|
|
|
nat_entry_set_slab = f2fs_kmem_cache_create("nat_entry_set",
|
|
sizeof(struct nat_entry_set));
|
|
if (!nat_entry_set_slab)
|
|
goto destroy_free_nid;
|
|
return 0;
|
|
|
|
destroy_free_nid:
|
|
kmem_cache_destroy(free_nid_slab);
|
|
destroy_nat_entry:
|
|
kmem_cache_destroy(nat_entry_slab);
|
|
fail:
|
|
return -ENOMEM;
|
|
}
|
|
|
|
void f2fs_destroy_node_manager_caches(void)
|
|
{
|
|
kmem_cache_destroy(nat_entry_set_slab);
|
|
kmem_cache_destroy(free_nid_slab);
|
|
kmem_cache_destroy(nat_entry_slab);
|
|
}
|