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linux-sg2042/fs/xfs
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Dave Chinner 7c107afb87 xfs: push the AIL in xlog_grant_head_wake 
In the situation where the log is full and the CIL has not recently
flushed, the AIL push threshold is throttled back to the where the
last write of the head of the log was completed. This is stored in
log->l_last_sync_lsn. Hence if the CIL holds > 25% of the log space
pinned by flushes and/or aggregation in progress, we can get the
situation where the head of the log lags a long way behind the
reservation grant head.

When this happens, the AIL push target is trimmed back from where
the reservation grant head wants to push the log tail to, back to
where the head of the log currently is. This means the push target
doesn't reach far enough into the log to actually move the tail
before the transaction reservation goes to sleep.

When the CIL push completes, it moves the log head forward such that
the AIL push target can now be moved, but that has no mechanism for
puhsing the log tail. Further, if the next tail movement of the log
is not large enough wake the waiter (i.e. still not enough space for
it to have a reservation granted), we don't wake anything up, and
hence we do not update the AIL push target to take into account the
head of the log moving and allowing the push target to be moved
forwards.

To avoid this particular condition, if we fail to wake the first
waiter on the grant head because we don't have enough space,
push on the AIL again. This will pick up any movement of the log
head and allow the push target to move forward due to completion of
CIL pushing.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
 		2019-09-05 21:36:12 -07:00
..
libxfs xfs: define a flags field for the AG geometry ioctl structure 2019-09-03 21:07:25 -07:00
scrub xfs: make attr lookup returns consistent 2019-08-30 22:43:57 -07:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile xfs: move xfs_trans_inode.c to libxfs/ 2019-07-15 08:10:18 -07:00
kmem.c xfs: add kmem_alloc_io() 2019-08-26 17:43:15 -07:00
kmem.h xfs: add kmem_alloc_io() 2019-08-26 17:43:15 -07:00
mrlock.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs.h xfs: remove b_last_holder & associated macros 2018-08-12 08:37:31 -07:00
xfs_acl.c xfs: allocate xattr buffer on demand 2019-08-30 22:43:57 -07:00
xfs_acl.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_aops.c for-linus-20190715 2019-07-15 21:20:52 -07:00
xfs_aops.h xfs: remove the unused xfs_count_page_state declaration 2019-06-30 09:05:17 -07:00
xfs_attr_inactive.c fs: xfs: Remove KM_NOSLEEP and KM_SLEEP. 2019-08-26 12:06:22 -07:00
xfs_attr_list.c fs: xfs: Remove KM_NOSLEEP and KM_SLEEP. 2019-08-26 12:06:22 -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 unnecessary int returns from deferred bmap functions 2019-08-28 08:31:02 -07:00
xfs_bmap_item.h xfs: merge xfs_bud_init into xfs_trans_get_bud 2019-06-28 19:27:36 -07:00
xfs_bmap_util.c xfs: cleanup xfs_fsb_to_db 2019-08-30 22:43:58 -07:00
xfs_bmap_util.h xfs: flush removing page cache in xfs_reflink_remap_prep 2018-11-21 10:10:53 -08:00
xfs_buf.c xfs: add kmem_alloc_io() 2019-08-26 17:43:15 -07:00
xfs_buf.h xfs: get allocation alignment from the buftarg 2019-08-26 17:43:14 -07:00
xfs_buf_item.c fs: xfs: Remove KM_NOSLEEP and KM_SLEEP. 2019-08-26 12:06:22 -07:00
xfs_buf_item.h xfs: remove the xfs_log_item_t typedef 2019-06-28 19:27:33 -07:00
xfs_dir2_readdir.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_discard.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_discard.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xfs_dquot.c xfs: remove all *_ITER_ABORT values 2019-08-29 21:22:41 -07:00
xfs_dquot.h xfs: remove the debug-only q_transp field from struct xfs_dquot 2019-06-12 08:59:59 -07:00
xfs_dquot_item.c fs: xfs: Remove KM_NOSLEEP and KM_SLEEP. 2019-08-26 12:06:22 -07:00
xfs_dquot_item.h xfs: remove the xfs_log_item_t typedef 2019-06-28 19:27:33 -07:00
xfs_error.c fs: xfs: Remove KM_NOSLEEP and KM_SLEEP. 2019-08-26 12:06:22 -07:00
xfs_error.h xfs: Introduce XFS_PTAG_VERIFIER_ERROR panic mask 2019-02-11 16:07:00 -08:00
xfs_export.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_export.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_extent_busy.c fs: xfs: Remove KM_NOSLEEP and KM_SLEEP. 2019-08-26 12:06:22 -07:00
xfs_extent_busy.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_extfree_item.c fs: xfs: Remove KM_NOSLEEP and KM_SLEEP. 2019-08-26 12:06:22 -07:00
xfs_extfree_item.h xfs: merge xfs_efd_init into xfs_trans_get_efd 2019-06-28 19:27:35 -07:00
xfs_file.c xfs: Fix stale data exposure when readahead races with hole punch 2019-08-30 22:43:58 -07:00
xfs_filestream.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_filestream.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_fsmap.c xfs: remove all *_ITER_CONTINUE values 2019-08-30 22:43:56 -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 header files 2019-06-28 19:30:43 -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 fs: xfs: Remove KM_NOSLEEP and KM_SLEEP. 2019-08-26 12:06:22 -07:00
xfs_icache.h xfs: rename the speculative block allocation reclaim toggle functions 2019-04-26 12:28:55 -07:00
xfs_icreate_item.c fs: xfs: Remove KM_NOSLEEP and KM_SLEEP. 2019-08-26 12:06:22 -07:00
xfs_icreate_item.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_inode.c xfs: Fix deadlock between AGI and AGF with RENAME_WHITEOUT 2019-09-03 21:07:25 -07:00
xfs_inode.h xfs: widen inode delalloc block counter to 64-bits 2019-04-23 08:36:23 -07:00
xfs_inode_item.c fs: xfs: Remove KM_NOSLEEP and KM_SLEEP. 2019-08-26 12:06:22 -07:00
xfs_inode_item.h xfs: remove the xfs_log_item_t typedef 2019-06-28 19:27:33 -07:00
xfs_ioctl.c xfs: define a flags field for the AG geometry ioctl structure 2019-09-03 21:07:25 -07:00
xfs_ioctl.h xfs: introduce v5 inode group structure 2019-07-03 20:36:27 -07:00
xfs_ioctl32.c fs: xfs: Remove KM_NOSLEEP and KM_SLEEP. 2019-08-26 12:06:22 -07:00
xfs_ioctl32.h xfs: remove various bulk request typedef usage 2019-07-03 20:36:25 -07:00
xfs_iomap.c xfs: add a xfs_valid_startblock helper 2019-09-03 08:13:13 -07:00
xfs_iomap.h xfs: fix SEEK_DATA for speculative COW fork preallocation 2019-02-21 07:55:07 -08:00
xfs_iops.c xfs: fix missing ILOCK unlock when xfs_setattr_nonsize fails due to EDQUOT 2019-08-22 20:55:54 -07:00
xfs_iops.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_itable.c xfs: remove all *_ITER_ABORT values 2019-08-29 21:22:41 -07:00
xfs_itable.h xfs: remove all *_ITER_ABORT values 2019-08-29 21:22:41 -07:00
xfs_iwalk.c xfs: remove all *_ITER_ABORT values 2019-08-29 21:22:41 -07:00
xfs_iwalk.h xfs: remove all *_ITER_CONTINUE values 2019-08-30 22:43:56 -07:00
xfs_linux.h xfs: use bios directly to read and write the log recovery buffers 2019-06-28 19:27:26 -07:00
xfs_log.c xfs: push the AIL in xlog_grant_head_wake 2019-09-05 21:36:12 -07:00
xfs_log.h fs: xfs: xfs_log: Change return type from int to void 2019-07-03 08:21:58 -07:00
xfs_log_cil.c fs: xfs: Remove KM_NOSLEEP and KM_SLEEP. 2019-08-26 12:06:22 -07:00
xfs_log_priv.h fs: xfs: xfs_log: Change return type from int to void 2019-07-03 08:21:58 -07:00
xfs_log_recover.c xfs: add kmem_alloc_io() 2019-08-26 17:43:15 -07:00
xfs_message.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_message.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xfs_mount.c xfs: Use WARN_ON_ONCE for bailout mount-operation 2019-09-05 21:36:12 -07:00
xfs_mount.h xfs: add kmem allocation trace points 2019-08-26 17:43:14 -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: wire up the v5 inumbers ioctl 2019-07-03 20:36:28 -07:00
xfs_pnfs.c fs/xfs: Fix return code of xfs_break_leased_layouts() 2019-08-19 18:15:28 -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 xfs: poll waiting for quotacheck 2019-07-03 08:21:58 -07:00
xfs_pwork.h xfs: poll waiting for quotacheck 2019-07-03 08:21:58 -07:00
xfs_qm.c fs: xfs: Remove KM_NOSLEEP and KM_SLEEP. 2019-08-26 12:06:22 -07:00
xfs_qm.h xfs: widen quota block counters to 64-bit integers 2019-04-23 08:36:23 -07:00
xfs_qm_bhv.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_qm_syscalls.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_quota.h xfs: kill the xfs_dqtrx_t typedef 2019-04-23 08:36:23 -07:00
xfs_quotaops.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_refcount_item.c xfs: remove unnecessary int returns from deferred refcount functions 2019-08-28 08:31:02 -07:00
xfs_refcount_item.h xfs: merge xfs_cud_init into xfs_trans_get_cud 2019-06-28 19:27:35 -07:00
xfs_reflink.c xfs: remove unnecessary int returns from deferred bmap functions 2019-08-28 08:31:02 -07:00
xfs_reflink.h xfs: don't pass iomap flags to xfs_reflink_allocate_cow 2019-02-25 09:04:31 -08:00
xfs_rmap_item.c fs: xfs: Remove KM_NOSLEEP and KM_SLEEP. 2019-08-26 12:06:22 -07:00
xfs_rmap_item.h xfs: merge xfs_rud_init into xfs_trans_get_rud 2019-06-28 19:27:36 -07:00
xfs_rtalloc.c fs: xfs: Remove KM_NOSLEEP and KM_SLEEP. 2019-08-26 12:06:22 -07:00
xfs_rtalloc.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_stats.c xfs: remove unused header files 2019-06-28 19:30:43 -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: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_super.h xfs: include WARN, REPAIR build options in XFS_BUILD_OPTIONS 2019-06-12 08:37:40 -07:00
xfs_symlink.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_symlink.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_sysctl.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_sysctl.h xfs: multithreaded iwalk implementation 2019-07-03 07:33:26 -07:00
xfs_sysfs.c xfs: multithreaded iwalk implementation 2019-07-03 07:33:26 -07:00
xfs_sysfs.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_trace.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_trace.h xfs: add kmem_alloc_io() 2019-08-26 17:43:15 -07:00
xfs_trans.c fs: xfs: Remove KM_NOSLEEP and KM_SLEEP. 2019-08-26 12:06:22 -07:00
xfs_trans.h xfs: merge xfs_trans_bmap.c into xfs_bmap_item.c 2019-06-28 19:29:42 -07:00
xfs_trans_ail.c xfs: remove the xfs_log_item_t typedef 2019-06-28 19:27:33 -07:00
xfs_trans_buf.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_trans_dquot.c fs: xfs: Remove KM_NOSLEEP and KM_SLEEP. 2019-08-26 12:06:22 -07:00
xfs_trans_priv.h xfs: don't use xfs_trans_free_items in the commit path 2019-06-28 19:27:31 -07:00
xfs_xattr.c xfs: allocate xattr buffer on demand 2019-08-30 22:43:57 -07:00