Darrick J. Wong 8ffa90e114 xfs: fix deadlock and streamline xfs_getfsmap performance ... Refactor xfs_getfsmap to improve its performance: instead of indirectly calling a function that copies one record to userspace at a time, create a shadow buffer in the kernel and copy the whole array once at the end. On the author's computer, this reduces the runtime on his /home by ~20%. This also eliminates a deadlock when running GETFSMAP against the realtime device. The current code locks the rtbitmap to create fsmappings and copies them into userspace, having not released the rtbitmap lock. If the userspace buffer is an mmap of a sparse file that itself resides on the realtime device, the write page fault will recurse into the fs for allocation, which will deadlock on the rtbitmap lock. Fixes: 4c934c7dd6 ("xfs: report realtime space information via the rtbitmap") Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>		2020-10-07 08:40:29 -07:00
..
libxfs	xfs: only relog deferred intent items if free space in the log gets low	2020-10-07 08:40:29 -07:00
scrub	xfs: check dabtree node hash values when loading child blocks	2020-09-23 08:58:51 -07:00
Kconfig	xfs: deprecate the V4 format	2020-09-15 20:52:43 -07:00
kmem.c	xfs: remove kmem_realloc()	2020-09-06 18:05:51 -07:00
kmem.h	xfs: Remove kmem_zalloc_large()	2020-09-15 20:52:41 -07:00
Makefile
mrlock.h
xfs_acl.c	xfs: Remove kmem_zalloc_large()	2020-09-15 20:52:41 -07:00
xfs_acl.h
xfs_aops.c	New code for 5.8:	2020-06-02 19:21:40 -07:00
xfs_aops.h
xfs_attr_inactive.c	xfs: cleanup xfs_idestroy_fork	2020-05-19 09:40:59 -07:00
xfs_attr_list.c	xfs: Convert xfs_attr_sf macros to inline functions	2020-09-15 20:52:42 -07:00
xfs_bio_io.c
xfs_bmap_item.c	xfs: periodically relog deferred intent items	2020-10-07 08:40:28 -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: ensure that fpunch, fcollapse, and finsert operations are aligned to rt extent size	2020-09-15 20:52:42 -07:00
xfs_bmap_util.h
xfs_buf_item_recover.c	xfs: fix finobt btree block recovery ordering	2020-09-30 07:28:52 -07:00
xfs_buf_item.c	xfs: remove xlog_recover_iodone	2020-09-15 20:52:39 -07:00
xfs_buf_item.h	xfs: move the buffer retry logic to xfs_buf.c	2020-09-15 20:52:38 -07:00
xfs_buf.c	xfs: reuse _xfs_buf_read for re-reading the superblock	2020-09-15 20:52:39 -07:00
xfs_buf.h	xfs: reuse _xfs_buf_read for re-reading the superblock	2020-09-15 20:52:39 -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_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_dquot.c	xfs: fix some comments	2020-09-25 11:34:07 -07:00
xfs_dquot.h	xfs: refactor default quota grace period setting code	2020-09-15 20:52:40 -07:00
xfs_error.c
xfs_error.h
xfs_export.c	xfs: delete duplicated words + other fixes	2020-08-05 08:49:58 -07:00
xfs_export.h
xfs_extent_busy.c
xfs_extent_busy.h
xfs_extfree_item.c	xfs: periodically relog deferred intent items	2020-10-07 08:40:28 -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	xfs: force the log after remapping a synchronous-writes file	2020-09-15 20:52:42 -07:00
xfs_filestream.c	xfs: drop the obsolete comment on filestream locking	2020-09-25 11:34:08 -07:00
xfs_filestream.h
xfs_fsmap.c	xfs: fix deadlock and streamline xfs_getfsmap performance	2020-10-07 08:40:29 -07:00
xfs_fsmap.h	xfs: fix deadlock and streamline xfs_getfsmap performance	2020-10-07 08:40:29 -07:00
xfs_fsops.c
xfs_fsops.h
xfs_globals.c
xfs_health.c
xfs_icache.c	xfs: Remove unneeded semicolon	2020-09-15 20:52:42 -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_inode_item_recover.c	xfs: widen ondisk inode timestamps to deal with y2038+	2020-09-15 20:52:41 -07:00
xfs_inode_item.c	xfs: widen ondisk inode timestamps to deal with y2038+	2020-09-15 20:52:41 -07:00
xfs_inode_item.h	xfs: move the buffer retry logic to xfs_buf.c	2020-09-15 20:52:38 -07:00
xfs_inode.c	xfs: drop extra transaction roll from inode extent truncate	2020-09-21 09:54:29 -07:00
xfs_inode.h	xfs: widen ondisk inode timestamps to deal with y2038+	2020-09-15 20:52:41 -07:00
xfs_ioctl32.c
xfs_ioctl32.h
xfs_ioctl.c	xfs: fix deadlock and streamline xfs_getfsmap performance	2020-10-07 08:40:29 -07:00
xfs_ioctl.h
xfs_iomap.c	xfs: delete duplicated words + other fixes	2020-08-05 08:49:58 -07:00
xfs_iomap.h
xfs_iops.c	xfs: directly call xfs_generic_create() for ->create() and ->mkdir()	2020-09-25 11:34:08 -07:00
xfs_iops.h
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_iwalk.c
xfs_iwalk.h
xfs_linux.h	xfs: remove the unused SYNCHRONIZE macro	2020-09-25 11:34:07 -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: fix an incore inode UAF in xfs_bui_recover	2020-10-07 08:40:28 -07:00
xfs_log.c	xfs: expose the log push threshold	2020-10-07 08:40:29 -07:00
xfs_log.h	xfs: expose the log push threshold	2020-10-07 08:40:29 -07:00
xfs_message.c
xfs_message.h
xfs_mount.c	xfs: remove xfs_getsb	2020-09-15 20:52:39 -07:00
xfs_mount.h	xfs: remove xfs_getsb	2020-09-15 20:52:39 -07:00
xfs_mru_cache.c
xfs_mru_cache.h
xfs_ondisk.h	xfs: Remove typedef xfs_attr_shortform_t	2020-09-15 20:52:42 -07:00
xfs_pnfs.c
xfs_pnfs.h
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_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: refactor default quota grace period setting code	2020-09-15 20:52:40 -07:00
xfs_qm.c	xfs: remove the unused parameter id from xfs_qm_dqattach_one	2020-09-25 11:34:07 -07:00
xfs_qm.h	xfs: refactor quota expiration timer modification	2020-09-15 20:52:40 -07:00
xfs_quota.h	xfs: move the buffer retry logic to xfs_buf.c	2020-09-15 20:52:38 -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: periodically relog deferred intent items	2020-10-07 08:40:28 -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: periodically relog deferred intent items	2020-10-07 08:40:28 -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: Set xfs_buf's b_ops member when zeroing bitmap/summary files	2020-09-23 08:58:51 -07:00
xfs_rtalloc.h
xfs_stats.c	xfs: periodically relog deferred intent items	2020-10-07 08:40:28 -07:00
xfs_stats.h	xfs: periodically relog deferred intent items	2020-10-07 08:40:28 -07:00
xfs_super.c	xfs: remove deprecated mount options	2020-09-25 11:34:08 -07:00
xfs_super.h
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_sysctl.c	xfs: remove deprecated sysctl options	2020-09-25 11:34:08 -07:00
xfs_sysctl.h
xfs_sysfs.c
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_trace.h	xfs: periodically relog deferred intent items	2020-10-07 08:40:28 -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: simplify xfs_trans_getsb	2020-09-15 20:52:39 -07:00
xfs_trans_dquot.c	xfs: widen ondisk quota expiration timestamps to handle y2038+	2020-09-15 20:52:41 -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: do the assert for all the log done items in xfs_trans_cancel	2020-09-25 11:34:07 -07:00
xfs_trans.h	xfs: periodically relog deferred intent items	2020-10-07 08:40:28 -07:00
xfs_xattr.c	xfs: remove duplicate headers	2020-05-08 08:51:34 -07:00
xfs.h