AuxXxilium/linux_dsm_epyc7002
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657f101930
linux_dsm_epyc7002/fs/xfs
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Brian Foster 657f101930 xfs: fix off-by-one in inode alloc block reservation calculation 
The inode chunk allocation transaction reserves inobt_maxlevels-1
blocks to accommodate a full split of the inode btree. A full split
requires an allocation for every existing level and a new root
block, which means inobt_maxlevels is the worst case block
requirement for a transaction that inserts to the inobt. This can
lead to a transaction block reservation overrun when tmpfile
creation allocates an inode chunk and expands the inobt to its
maximum depth. This problem has been observed in conjunction with
overlayfs, which makes frequent use of tmpfiles internally.

The existing reservation code goes back as far as the Linux git repo
history (v2.6.12). It was likely never observed as a problem because
the traditional file/directory creation transactions also include
worst case block reservation for directory modifications, which most
likely is able to make up for a single block deficiency in the inode
allocation portion of the calculation. tmpfile support is relatively
more recent (v3.15), less heavily used, and only includes the inode
allocation block reservation as tmpfiles aren't linked into the
directory tree on creation.

Fix up the inode alloc block reservation macro and a couple of the
block allocator minleft parameters that enforce an allocation to
leave enough free blocks in the AG for a full inobt split.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2020-08-26 14:13:21 -07:00
..
libxfs xfs: fix off-by-one in inode alloc block reservation calculation 2020-08-26 14:13:21 -07:00
scrub xfs: Refactor xfs_da_state_alloc() helper 2020-07-28 20:24:14 -07:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
kmem.c xfs: remove xfs_zone_{alloc,zalloc} helpers 2020-07-28 20:24:14 -07:00
kmem.h xfs: remove xfs_zone_{alloc,zalloc} helpers 2020-07-28 20:24:14 -07:00
Makefile xfs: refactor log recovery item sorting into a generic dispatch structure 2020-05-08 08:49:58 -07:00
mrlock.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_acl.c xfs: only allocate the buffer size actually needed in __xfs_set_acl 2020-03-02 20:55:55 -08:00
xfs_acl.h xfs: improve xfs_forget_acl 2020-03-02 20:55:55 -08:00
xfs_aops.c New code for 5.8: 2020-06-02 19:21:40 -07:00
xfs_aops.h xfs: add a xfs_inode_buftarg helper 2019-10-28 08:37:54 -07:00
xfs_attr_inactive.c xfs: cleanup xfs_idestroy_fork 2020-05-19 09:40:59 -07:00
xfs_attr_list.c xfs: delete duplicated words + other fixes 2020-08-05 08:49:58 -07:00
xfs_bio_io.c xfs: chain bios the right way around in xfs_rw_bdev 2019-07-10 10:04:16 -07:00
xfs_bmap_item.c xfs: Remove kmem_zone_zalloc() usage 2020-07-28 20:24:14 -07:00
xfs_bmap_item.h xfs: refactor intent item RECOVERED flag into the log item 2020-05-08 08:50:01 -07:00
xfs_bmap_util.c xfs: finish dfops on every insert range shift iteration 2020-08-26 14:13:21 -07:00
xfs_bmap_util.h xfs: simplify xfs_iomap_eof_align_last_fsb 2019-11-03 10:22:30 -08:00
xfs_buf_item_recover.c xfs: delete duplicated words + other fixes 2020-08-05 08:49:58 -07:00
xfs_buf_item.c xfs: delete duplicated words + other fixes 2020-08-05 08:49:58 -07:00
xfs_buf_item.h xfs: get rid of log item callbacks 2020-07-07 07:15:07 -07:00
xfs_buf.c xfs: Remove kmem_zone_zalloc() usage 2020-07-28 20:24:14 -07:00
xfs_buf.h xfs: call xfs_buf_iodone directly 2020-07-06 10:46:58 -07:00
xfs_dir2_readdir.c xfs: move the fork format fields into struct xfs_ifork 2020-05-19 09:40:58 -07:00
xfs_discard.c xfs: remove XFS_BUF_TO_AGF 2020-03-11 09:11:39 -07:00
xfs_discard.h
xfs_dquot_item_recover.c xfs: rename the ondisk dquot d_flags to d_type 2020-07-28 20:24:14 -07:00
xfs_dquot_item.c xfs: stop using q_core.d_id in the quota code 2020-07-28 20:24:14 -07:00
xfs_dquot_item.h xfs: factor out quotaoff intent AIL removal and memory free 2020-03-18 08:12:23 -07:00
xfs_dquot.c xfs: delete duplicated words + other fixes 2020-08-05 08:49:58 -07:00
xfs_dquot.h xfs: create xfs_dqtype_t to represent quota types 2020-07-28 20:24:14 -07:00
xfs_error.c xfs: random buffer write failure errortag 2020-05-07 08:27:48 -07:00
xfs_error.h xfs: xfs_buf_corruption_error should take __this_address 2020-03-12 07:58:12 -07:00
xfs_export.c xfs: delete duplicated words + other fixes 2020-08-05 08:49:58 -07:00
xfs_export.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_extent_busy.c xfs: cleanup use of the XFS_ALLOC_ flags 2019-11-03 10:22:31 -08:00
xfs_extent_busy.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_extfree_item.c xfs: Remove kmem_zone_zalloc() usage 2020-07-28 20:24:14 -07:00
xfs_extfree_item.h xfs: refactor intent item RECOVERED flag into the log item 2020-05-08 08:50:01 -07:00
xfs_file.c New code for 5.9: 2020-08-07 10:57:29 -07:00
xfs_filestream.c xfs: make xfs_*read_agf return EAGAIN to ALLOC_FLAG_TRYLOCK callers 2020-01-26 14:32:26 -08:00
xfs_filestream.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_fsmap.c xfs: prohibit fs freezing when using empty transactions 2020-03-26 08:19:24 -07:00
xfs_fsmap.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_fsops.c xfs: remove unused shutdown types 2020-05-07 08:27:48 -07:00
xfs_fsops.h xfs: change some error-less functions to void types 2019-05-01 20:26:30 -07:00
xfs_globals.c xfs: multithreaded iwalk implementation 2019-07-03 07:33:26 -07:00
xfs_health.c xfs: introduce new v5 bulkstat structure 2019-07-03 20:36:26 -07:00
xfs_icache.c xfs: Remove kmem_zone_alloc() usage 2020-07-28 20:24:14 -07:00
xfs_icache.h xfs: remove SYNC_WAIT and SYNC_TRYLOCK 2020-07-14 08:47:33 -07:00
xfs_icreate_item.c xfs: Remove kmem_zone_zalloc() usage 2020-07-28 20:24:14 -07:00
xfs_icreate_item.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_inode_item_recover.c xfs: mark log recovery buffers for completion 2020-07-06 10:46:58 -07:00
xfs_inode_item.c xfs: delete duplicated words + other fixes 2020-08-05 08:49:58 -07:00
xfs_inode_item.h xfs: make inode IO completion buffer centric 2020-07-06 10:46:59 -07:00
xfs_inode.c xfs: delete duplicated words + other fixes 2020-08-05 08:49:58 -07:00
xfs_inode.h xfs: rework xfs_iflush_cluster() dirty inode iteration 2020-07-07 07:15:09 -07:00
xfs_ioctl32.c xfs: lift cursor copy in/out into xfs_ioc_attr_list 2020-03-02 20:55:54 -08:00
xfs_ioctl32.h xfs: rename compat_time_t to old_time32_t 2020-01-06 08:57:36 -08:00
xfs_ioctl.c fs/xfs: Support that ioctl(SETXFLAGS/GETXFLAGS) can set/get inode DAX on XFS. 2020-07-28 20:28:20 -07:00
xfs_ioctl.h xfs: embedded the attrlist cursor into struct xfs_attr_list_context 2020-03-02 20:55:55 -08:00
xfs_iomap.c xfs: delete duplicated words + other fixes 2020-08-05 08:49:58 -07:00
xfs_iomap.h xfs: simplify the xfs_iomap_write_direct calling 2019-11-03 10:22:30 -08:00
xfs_iops.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
xfs_iops.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_itable.c xfs: move the fork format fields into struct xfs_ifork 2020-05-19 09:40:58 -07:00
xfs_itable.h xfs: remove all *_ITER_ABORT values 2019-08-29 21:22:41 -07:00
xfs_iwalk.c xfs: kill the XFS_WANT_CORRUPT_* macros 2019-11-12 17:19:02 -08:00
xfs_iwalk.h xfs: remove all *_ITER_CONTINUE values 2019-08-30 22:43:56 -07:00
xfs_linux.h xfs: remove useless definitions in xfs_linux.h 2020-07-06 10:46:58 -07:00
xfs_log_cil.c xfs: delete duplicated words + other fixes 2020-08-05 08:49:58 -07:00
xfs_log_priv.h xfs: Modify xlog_ticket_alloc() to use kernel's MM API 2020-07-28 20:24:14 -07:00
xfs_log_recover.c xfs: delete duplicated words + other fixes 2020-08-05 08:49:58 -07:00
xfs_log.c xfs: Modify xlog_ticket_alloc() to use kernel's MM API 2020-07-28 20:24:14 -07:00
xfs_log.h xfs: refactor and split xfs_log_done() 2020-03-27 08:32:53 -07:00
xfs_message.c xfs: refactor ratelimited buffer error messages into helper 2020-05-07 08:27:46 -07:00
xfs_message.h xfs: refactor ratelimited buffer error messages into helper 2020-05-07 08:27:46 -07:00
xfs_mount.c xfs: remove SYNC_WAIT from xfs_reclaim_inodes() 2020-07-07 07:15:08 -07:00
xfs_mount.h xfs: allow multiple reclaimers per AG 2020-07-07 07:15:07 -07:00
xfs_mru_cache.c fs: xfs: Remove KM_NOSLEEP and KM_SLEEP. 2019-08-26 12:06:22 -07:00
xfs_mru_cache.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_ondisk.h xfs: make struct xfs_buf_log_format have a consistent size 2020-01-16 08:07:23 -08:00
xfs_pnfs.c xfs: define printk_once variants for xfs messages 2020-05-04 09:03:15 -07:00
xfs_pnfs.h xfs: prepare xfs_break_layouts() for another layout type 2018-05-22 07:19:08 -07:00
xfs_pwork.c block: remove the bd_queue field from struct block_device 2020-07-01 08:08:20 -06:00
xfs_pwork.h xfs: poll waiting for quotacheck 2019-07-03 08:21:58 -07:00
xfs_qm_bhv.c xfs: rename XFS_DQ_{USER,GROUP,PROJ} to XFS_DQTYPE_* 2020-07-28 20:24:14 -07:00
xfs_qm_syscalls.c xfs: create xfs_dqtype_t to represent quota types 2020-07-28 20:24:14 -07:00
xfs_qm.c xfs: rename the ondisk dquot d_flags to d_type 2020-07-28 20:24:14 -07:00
xfs_qm.h xfs: create xfs_dqtype_t to represent quota types 2020-07-28 20:24:14 -07:00
xfs_quota.h xfs: create xfs_dqtype_t to represent quota types 2020-07-28 20:24:14 -07:00
xfs_quotaops.c xfs: create xfs_dqtype_t to represent quota types 2020-07-28 20:24:14 -07:00
xfs_refcount_item.c xfs: delete duplicated words + other fixes 2020-08-05 08:49:58 -07:00
xfs_refcount_item.h xfs: refactor intent item RECOVERED flag into the log item 2020-05-08 08:50:01 -07:00
xfs_reflink.c xfs: delete duplicated words + other fixes 2020-08-05 08:49:58 -07:00
xfs_reflink.h xfs: move helpers that lock and unlock two inodes against userspace IO 2020-07-06 10:46:57 -07:00
xfs_rmap_item.c xfs: Remove kmem_zone_zalloc() usage 2020-07-28 20:24:14 -07:00
xfs_rmap_item.h xfs: refactor intent item RECOVERED flag into the log item 2020-05-08 08:50:01 -07:00
xfs_rtalloc.c xfs: make xfs_trans_get_buf return an error code 2020-01-26 14:32:26 -08:00
xfs_rtalloc.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_stats.c xfs: Use scnprintf() for avoiding potential buffer overflow 2020-03-12 07:58:13 -07:00
xfs_stats.h xfs: use offsetof() in place of offset macros for __xfsstats 2018-10-18 17:21:39 +11:00
xfs_super.c xfs: preserve inode versioning across remounts 2020-07-17 13:20:20 -07:00
xfs_super.h xfs: include QUOTA, FATAL ASSERT build options in XFS_BUILD_OPTIONS 2019-10-21 09:04:57 -07:00
xfs_symlink.c xfs: move the fork format fields into struct xfs_ifork 2020-05-19 09:40:58 -07:00
xfs_symlink.h xfs: Correct comment tyops -> typos 2019-11-10 10:21:57 -08:00
xfs_sysctl.c sysctl: pass kernel pointers to ->proc_handler 2020-04-27 02:07:40 -04:00
xfs_sysctl.h xfs: multithreaded iwalk implementation 2019-07-03 07:33:26 -07:00
xfs_sysfs.c xfs: avoid unused to_mp() function warning 2019-09-24 09:40:19 -07:00
xfs_sysfs.h xfs: Fix UBSAN null-ptr-deref in xfs_sysfs_init 2020-08-07 11:50:17 -07:00
xfs_trace.c xfs: support bulk loading of staged btrees 2020-03-18 08:12:23 -07:00
xfs_trace.h xfs: remove xfs_zone_{alloc,zalloc} helpers 2020-07-28 20:24:14 -07:00
xfs_trans_ail.c xfs: delete duplicated words + other fixes 2020-08-05 08:49:58 -07:00
xfs_trans_buf.c xfs: clean up the buffer iodone callback functions 2020-07-07 07:15:07 -07:00
xfs_trans_dquot.c xfs: Remove kmem_zone_zalloc() usage 2020-07-28 20:24:14 -07:00
xfs_trans_priv.h xfs: refactor adding recovered intent items to the log 2020-05-08 08:50:00 -07:00
xfs_trans.c xfs: Remove kmem_zone_zalloc() usage 2020-07-28 20:24:14 -07:00
xfs_trans.h xfs: unwind log item error flagging 2020-07-07 07:15:07 -07:00
xfs_xattr.c xfs: remove duplicate headers 2020-05-08 08:51:34 -07:00
xfs.h xfs: remove b_last_holder & associated macros 2018-08-12 08:37:31 -07:00