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linux-brain/fs/gfs2
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Bob Peterson 09f8ac747f gfs2: Don't demote a glock until its revokes are written 
[ Upstream commit df5db5f9ee112e76b5202fbc331f990a0fc316d6 ]

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 10:48:41 +02:00
..
Kconfig gfs2: Fix the crc32c dependency 2018-02-01 11:25:31 -07:00
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 gfs2: using posix_acl_xattr_size instead of posix_acl_to_xattr 2018-07-24 20:02:11 +02:00
acl.h gfs2: Switch to generic xattr handlers 2016-05-12 22:28:05 -04:00
aops.c gfs2: use iomap_readpage for blocksize == PAGE_SIZE 2018-07-25 00:08:49 +02:00
aops.h gfs2: iomap buffered write support 2018-07-02 16:27:17 +01:00
bmap.c gfs2: take jdata unstuff into account in do_grow 2019-12-05 09:20:36 +01:00
bmap.h gfs2: Iomap cleanups and improvements 2018-06-04 07:56:51 -05:00
dentry.c gfs2: Lock holder cleanup 2016-06-27 09:47:09 -05:00
dir.c gfs2: remove redundant variable 'moved' 2018-07-25 00:08:59 +02:00
dir.h GFS2: Make rename not save dirent location 2014-10-01 14:06:15 +01:00
export.c gfs2: Get rid of gfs2_ilookup 2016-06-27 09:47:08 -05:00
file.c gfs2: fix O_SYNC write handling 2020-02-11 04:34:07 -08:00
gfs2.h
…
glock.c gfs2: Don't demote a glock until its revokes are written 2020-04-17 10:48:41 +02:00
glock.h gfs2: gfs2_evict_inode: Put glocks asynchronously 2017-08-10 10:45:21 -05:00
glops.c vfs: change inode times to use struct timespec64 2018-06-05 16:57:31 -07:00
glops.h GFS2: update freeze code to use freeze/thaw_super on all nodes 2014-11-17 10:36:39 +00:00
incore.h gfs2: slow the deluge of io error messages 2019-11-24 08:20:26 +01:00
inode.c gfs2_atomic_open(): fix O_EXCL|O_CREAT handling on cold dcache 2020-03-18 07:14:21 +01:00
inode.h gfs2: Implement SEEK_HOLE / SEEK_DATA via iomap 2017-10-31 14:26:35 +01:00
lock_dlm.c gfs2: Fix sign extension bug in gfs2_update_stats 2019-05-31 06:46:02 -07:00
log.c gfs2: fix glock reference problem in gfs2_trans_remove_revoke 2019-12-17 20:35:55 +01:00
log.h gfs2: fix glock reference problem in gfs2_trans_remove_revoke 2019-12-17 20:35:55 +01:00
lops.c gfs2: fix glock reference problem in gfs2_trans_remove_revoke 2019-12-17 20:35:55 +01:00
lops.h GFS2: Introduce new gfs2_log_header_v2 2018-01-23 07:38:53 -07:00
main.c gfs2: Fix wrong error handling in init_gfs2_fs() 2017-11-27 10:47:22 -06:00
meta_io.c gfs2: Don't withdraw under a spin lock 2018-06-21 07:39:44 -05:00
meta_io.h GFS2: Refactor gfs2_remove_from_journal 2016-05-06 11:27:27 -05:00
ops_fstype.c gfs2: Don't leave s_fs_info pointing to freed memory in init_sbd 2018-12-01 09:37:27 +01:00
quota.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
quota.h gfs2: Fix fallocate chunk size 2018-03-08 09:26:20 -07:00
recovery.c GFS2: Fix recovery issues for spectators 2018-07-25 00:06:24 +02:00
recovery.h GFS2: Fix gfs2_replay_incr_blk for multiple journal sizes 2016-07-21 13:02:44 -05:00
rgrp.c gfs2: Fix marking bitmaps non-full 2019-12-01 09:16:15 +01:00
rgrp.h GFS2: Non-recursive delete 2017-04-19 08:25:43 -04:00
super.c GFS2: Flush the GFS2 delete workqueue before stopping the kernel threads 2019-11-24 08:20:48 +01:00
super.h GFS2: update freeze code to use freeze/thaw_super on all nodes 2014-11-17 10:36:39 +00:00
sys.c GFS2: Fix recovery issues for spectators 2018-07-25 00:06:24 +02:00
sys.h GFS2: dlm based recovery coordination 2012-01-11 09:23:05 +00:00
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 2019-12-17 20:35:55 +01:00
trans.h gfs2: Eliminate redundant ip->i_rgd 2018-07-05 17:47:16 +02:00
util.c gfs2: slow the deluge of io error messages 2019-11-24 08:20:26 +01:00
util.h gfs2: Don't withdraw under a spin lock 2018-06-21 07:39:44 -05:00
xattr.c gfs2: Get rid of gfs2_ea_strlen 2018-08-03 13:20:02 +01:00
xattr.h gfs2: Remove gfs2_xattr_acl_chmod 2015-12-06 21:25:17 -05:00