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alistair23-linux/fs/gfs2
Bob Peterson c5bcaacd06 gfs2: Don't demote a glock until its revokes are written
[ Upstream commit df5db5f9ee ]

Before this patch, run_queue would demote glocks based on whether
there are any more holders. But if the glock has pending revokes that
haven't been written to the media, giving up the glock might end in
file system corruption if the revokes never get written due to
io errors, node crashes and fences, etc. In that case, another node
will replay the metadata blocks associated with the glock, but
because the revoke was never written, it could replay that block
even though the glock had since been granted to another node who
might have made changes.

This patch changes the logic in run_queue so that it never demotes
a glock until its count of pending revokes reaches zero.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Reviewed-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-04-17 10:50:03 +02:00
..
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
acl.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
acl.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
aops.c gfs2: Minor PAGE_SIZE arithmetic cleanups 2019-09-04 20:22:06 +02:00
aops.h gfs2: mark stuffed_readpage static 2019-07-03 14:45:18 +02:00
bmap.c gfs2: clear buf_in_tr when ending a transaction in sweep_bh_for_rgrps 2019-09-17 16:50:50 +02:00
bmap.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
dentry.c gfs2: untangle the logic in gfs2_drevalidate 2019-09-03 09:42:41 +02:00
dir.c gfs2: Delete an unnecessary check before brelse() 2019-09-04 20:22:17 +02:00
dir.h gfs2: Delete an unnecessary check before brelse() 2019-09-04 20:22:17 +02:00
export.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
file.c gfs2: fix O_SYNC write handling 2020-02-11 04:35:35 -08:00
gfs2.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
glock.c gfs2: Don't demote a glock until its revokes are written 2020-04-17 10:50:03 +02:00
glock.h gfs2: Use async glocks for rename 2019-09-04 20:22:17 +02:00
glops.c gfs2: Do log_flush in gfs2_ail_empty_gl even if ail list is empty 2020-04-17 10:50:03 +02:00
glops.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
incore.h Merge branch 'work.mount3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-09-24 12:33:34 -07:00
inode.c gfs2_atomic_open(): fix O_EXCL|O_CREAT handling on cold dcache 2020-03-18 07:17:51 +01:00
inode.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
lock_dlm.c gfs2: Fix recovery slot bumping 2019-09-03 09:42:41 +02:00
log.c gfs2: Do log_flush in gfs2_ail_empty_gl even if ail list is empty 2020-04-17 10:50:03 +02:00
log.h gfs2: Do log_flush in gfs2_ail_empty_gl even if ail list is empty 2020-04-17 10:50:03 +02:00
lops.c gfs2: fix gfs2_find_jhead that returns uninitialized jhead with seq 0 2020-02-11 04:35:35 -08:00
lops.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
main.c SPDX update for 5.2-rc4 2019-06-08 12:52:42 -07:00
meta_io.c gfs2: Rename SDF_SHUTDOWN to SDF_WITHDRAWN 2019-06-27 21:26:35 +02:00
meta_io.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
ops_fstype.c gfs2: Fix initialisation of args for remount 2019-10-30 12:16:53 +01:00
quota.c gfs2: Minor PAGE_SIZE arithmetic cleanups 2019-09-04 20:22:06 +02:00
quota.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
recovery.c gfs2: log which portion of the journal is replayed 2019-06-27 21:03:58 +02:00
recovery.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
rgrp.c gfs2: Fix possible fs name overflows 2019-09-03 09:42:41 +02:00
rgrp.h gfs2: dump fsid when dumping glock problems 2019-06-27 21:27:43 +02:00
super.c Merge branch 'work.mount3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-09-24 12:33:34 -07:00
super.h gfs2: Convert gfs2 to fs_context 2019-09-18 22:47:05 -04:00
sys.c Driver Core and debugfs changes for 5.3-rc1 2019-07-12 12:24:03 -07:00
sys.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
trace_gfs2.h gfs2: eliminate rs_inum and reduce the size of gfs2 inodes 2018-06-21 07:39:31 -05:00
trans.c gfs2: fix glock reference problem in gfs2_trans_remove_revoke 2019-12-21 11:04:34 +01:00
trans.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
util.c gfs2: Fix possible fs name overflows 2019-09-03 09:42:41 +02:00
util.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
xattr.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
xattr.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00