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7cd3099f49
linux-next/fs/xfs
History
Brian Foster 7cd3099f49 xfs: drop submit side trans alloc for append ioends 
Per-inode ioend completion batching has a log reservation deadlock
vector between preallocated append transactions and transactions
that are acquired at completion time for other purposes (i.e.,
unwritten extent conversion or COW fork remaps). For example, if the
ioend completion workqueue task executes on a batch of ioends that
are sorted such that an append ioend sits at the tail, it's possible
for the outstanding append transaction reservation to block
allocation of transactions required to process preceding ioends in
the list.

Append ioend completion is historically the common path for on-disk
inode size updates. While file extending writes may have completed
sometime earlier, the on-disk inode size is only updated after
successful writeback completion. These transactions are preallocated
serially from writeback context to mitigate concurrency and
associated log reservation pressure across completions processed by
multi-threaded workqueue tasks.

However, now that delalloc blocks unconditionally map to unwritten
extents at physical block allocation time, size updates via append
ioends are relatively rare. This means that inode size updates most
commonly occur as part of the preexisting completion time
transaction to convert unwritten extents. As a result, there is no
longer a strong need to preallocate size update transactions.

Remove the preallocation of inode size update transactions to avoid
the ioend completion processing log reservation deadlock. Instead,
continue to send all potential size extending ioends to workqueue
context for completion and allocate the transaction from that
context. This ensures that no outstanding log reservation is owned
by the ioend completion worker task when it begins to process
ioends.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-04-09 10:32:13 -07:00
..
libxfs xfs: fix return of uninitialized value in variable error 2021-04-09 10:27:34 -07:00
scrub xfs: get rid of the ip parameter to xchk_setup_* 2021-04-09 10:27:18 -07:00
Kconfig xfs: fix Kconfig asking about XFS_SUPPORT_V4 when XFS_FS=n 2020-10-16 15:34:28 -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 xfs: refactor log recovery item sorting into a generic dispatch structure 2020-05-08 08:49:58 -07:00
mrlock.h
xfs_acl.c xfs: support idmapped mounts 2021-01-24 14:43:46 +01:00
xfs_acl.h fs: make helpers idmap mount aware 2021-01-24 14:27:20 +01:00
xfs_aops.c xfs: drop submit side trans alloc for append ioends 2021-04-09 10:32:13 -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 block: Add bio_max_segs 2021-02-26 15:49:51 -07:00
xfs_bmap_item.c xfs: Check for extent overflow when punching a hole 2021-01-22 16:54:47 -08:00
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: move the check for post-EOF mappings into xfs_can_free_eofblocks 2021-04-07 14:38:21 -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: optimise xfs_buf_item_size/format for contiguous regions 2021-03-25 16:47:51 -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 block: Add bio_max_segs 2021-02-26 15:49:51 -07:00
xfs_buf.h xfs: don't drain buffer lru on freeze and read-only remount 2021-01-22 16:54:50 -08:00
xfs_dir2_readdir.c xfs: move the di_size field to struct xfs_inode 2021-04-07 14:37:03 -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: move the di_projid field to struct xfs_inode 2021-04-07 14:37:03 -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: add error injection for per-AG resv failure 2021-03-25 16:47:53 -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_extent_busy.c xfs: don't reuse busy extents on extent trim 2021-02-25 07:58:46 -08:00
xfs_extent_busy.h
xfs_extfree_item.c xfs: refactor data device extent validation 2020-12-09 09:49:38 -08:00
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: move the di_flags2 field to struct xfs_inode 2021-04-07 14:37:05 -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: move the di_flags field to struct xfs_inode 2021-04-07 14:37:05 -07:00
xfs_fsmap.c xfs: drop freeze protection when running GETFSMAP 2021-03-24 10:36:05 -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: support shrinking unused space in the last AG 2021-03-25 16:47:52 -07:00
xfs_fsops.h xfs: get rid of xfs_growfs_{data,log}_t 2021-02-03 09:18:50 -08:00
xfs_globals.c xfs: consolidate the eofblocks and cowblocks workers 2021-02-03 09:18:49 -08:00
xfs_health.c
xfs_icache.c xfs: move the xfs_can_free_eofblocks call under the IOLOCK 2021-04-07 14:38:16 -07:00
xfs_icache.h xfs: rename block gc start and stop functions 2021-02-03 09:18:50 -08:00
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: move the di_crtime field to struct xfs_inode 2021-04-07 14:37:05 -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: move the check for post-EOF mappings into xfs_can_free_eofblocks 2021-04-07 14:38:21 -07:00
xfs_inode.h xfs: move the di_crtime field to struct xfs_inode 2021-04-07 14:37:05 -07:00
xfs_ioctl32.c xfs: remove the possibly unused mp variable in xfs_file_compat_ioctl 2021-02-03 20:31:14 +01:00
xfs_ioctl32.h
xfs_ioctl.c xfs: fix scrub and remount-ro protection when running scrub 2021-04-09 10:27:13 -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: move the di_size field to struct xfs_inode 2021-04-07 14:37:03 -07:00
xfs_iomap.h
xfs_iops.c xfs: move the di_crtime field to struct xfs_inode 2021-04-07 14:37:05 -07:00
xfs_iops.h xfs: support idmapped mounts 2021-01-24 14:43:46 +01:00
xfs_itable.c xfs: move the di_crtime field to struct xfs_inode 2021-04-07 14:37:05 -07:00
xfs_itable.h xfs: support idmapped mounts 2021-01-24 14:43:46 +01:00
xfs_iwalk.c xfs: increase the default parallelism levels of pwork clients 2021-02-03 09:18:49 -08:00
xfs_iwalk.h
xfs_linux.h xfs: move the di_flags field to struct xfs_inode 2021-04-07 14:37:05 -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: remove the di_dmevmask and di_dmstate fields from struct xfs_icdinode 2021-04-07 14:37:03 -07:00
xfs_log.c xfs: fix boolreturn.cocci warnings 2021-02-10 17:28:13 -08:00
xfs_log.h xfs: cover the log during log quiesce 2021-01-22 16:54:51 -08:00
xfs_message.c xfs: refactor ratelimited buffer error messages into helper 2020-05-07 08:27:46 -07:00
xfs_message.h treewide: Convert macro and uses of __section(foo) to __section("foo") 2020-10-25 14:51:49 -07:00
xfs_mount.c xfs: precalculate default inode attribute offset 2021-04-07 14:37:07 -07:00
xfs_mount.h xfs: rename the blockgc workqueue 2021-03-25 16:47:50 -07:00
xfs_mru_cache.c xfs: set WQ_SYSFS on all workqueues in debug mode 2021-02-03 09:18:49 -08:00
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: move the di_size field to struct xfs_inode 2021-04-07 14:37:03 -07:00
xfs_pnfs.h
xfs_pwork.c xfs: increase the default parallelism levels of pwork clients 2021-02-03 09:18:49 -08:00
xfs_pwork.h xfs: increase the default parallelism levels of pwork clients 2021-02-03 09:18:49 -08:00
xfs_qm_bhv.c xfs: move the di_projid field to struct xfs_inode 2021-04-07 14:37:03 -07:00
xfs_qm_syscalls.c xfs: move the di_size field to struct xfs_inode 2021-04-07 14:37:03 -07:00
xfs_qm.c xfs: move the di_nblocks field to struct xfs_inode 2021-04-07 14:37:03 -07:00
xfs_qm.h xfs: refactor quota expiration timer modification 2020-09-15 20:52:40 -07:00
xfs_quota.h xfs: remove xfs_qm_vop_chown_reserve 2021-02-03 09:18:49 -08:00
xfs_quotaops.c xfs: move the di_nblocks field to struct xfs_inode 2021-04-07 14:37:03 -07:00
xfs_refcount_item.c xfs: refactor data device extent validation 2020-12-09 09:49:38 -08:00
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: move the di_flags2 field to struct xfs_inode 2021-04-07 14:37:05 -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: refactor file range validation 2020-12-09 09:49:38 -08:00
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: move the di_flags field to struct xfs_inode 2021-04-07 14:37:05 -07:00
xfs_rtalloc.h xfs: remove xfs_buf_t typedef 2020-12-16 16:07:34 -08:00
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: move the di_flags field to struct xfs_inode 2021-04-07 14:37:05 -07:00
xfs_super.h xfs: set WQ_SYSFS on all workqueues in debug mode 2021-02-03 09:18:49 -08:00
xfs_symlink.c xfs: move the di_flags field to struct xfs_inode 2021-04-07 14:37:05 -07:00
xfs_symlink.h xfs: support idmapped mounts 2021-01-24 14:43:46 +01:00
xfs_sysctl.c xfs: restore speculative_cow_prealloc_lifetime sysctl 2021-02-24 10:16:08 -08:00
xfs_sysctl.h xfs: consolidate the eofblocks and cowblocks workers 2021-02-03 09:18:49 -08:00
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: add a tracepoint for blockgc scans 2021-02-03 09:18:49 -08:00
xfs_trace.h xfs: move the di_size field to struct xfs_inode 2021-04-07 14:37:03 -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: remove xfs_buf_t typedef 2020-12-16 16:07:34 -08:00
xfs_trans_dquot.c xfs: shut down the filesystem if we screw up quota reservation 2021-02-03 09:18:49 -08:00
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: move the di_nblocks field to struct xfs_inode 2021-04-07 14:37:03 -07:00
xfs_trans.h xfs: use current->journal_info for detecting transaction recursion 2021-02-25 08:07:04 -08:00
xfs_xattr.c xfs: prevent metadata files from being inactivated 2021-03-25 16:47:50 -07:00
xfs.h