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623ba664b7
linux/fs/gfs2
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Bob Peterson 623ba664b7 gfs2: When freezing gfs2, use GL_EXACT and not GL_NOCACHE 
Before this patch, the freeze code in gfs2 specified GL_NOCACHE in
several places. That's wrong because we always want to know the state
of whether the file system is frozen.

There was also a problem with freeze/thaw transitioning the glock from
frozen (EX) to thawed (SH) because gfs2 will normally grant glocks in EX
to processes that request it in SH mode, unless GL_EXACT is specified.
Therefore, the freeze/thaw code, which tried to reacquire the glock in
SH mode would get the glock in EX mode, and miss the transition from EX
to SH. That made it think the thaw had completed normally, but since the
glock was still cached in EX, other nodes could not freeze again.

This patch removes the GL_NOCACHE flag to allow the freeze glock to be
cached. It also adds the GL_EXACT flag so the glock is fully transitioned
from EX to SH, thereby allowing future freeze operations.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
2020-07-03 12:05:35 +02:00
..
acl.c gfs2: Change inode qa_data to allow multiple users 2020-03-27 14:08:04 -05:00
acl.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
aops.c fs: convert mpage_readpages to mpage_readahead 2020-06-02 10:59:07 -07:00
aops.h gfs2: mark stuffed_readpage static 2019-07-03 14:45:18 +02:00
bmap.c gfs2: Another gfs2_walk_metadata fix 2020-05-08 15:15:12 +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 mm: remove the pgprot argument to __vmalloc 2020-06-02 10:59:11 -07:00
dir.h gfs2: Delete an unnecessary check before brelse() 2019-09-04 20:22:17 +02:00
export.c gfs2: Minor gfs2_lookup_by_inum cleanup 2020-06-05 20:19:21 +02:00
file.c gfs2: Remove unnecessary gfs2_qa_{get,put} pairs 2020-03-27 14:08:05 -05:00
gfs2.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
glock.c gfs2: Don't sleep during glock hash walk 2020-06-30 13:04:45 +02:00
glock.h Merge branch 'gfs2-iopen' into for-next 2020-06-05 21:25:36 +02:00
glops.c gfs2: freeze should work on read-only mounts 2020-07-03 12:05:35 +02:00
glops.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
incore.h gfs2: eliminate GIF_ORDERED in favor of list_empty 2020-07-03 12:05:34 +02:00
inode.c gfs2: Don't return NULL from gfs2_inode_lookup 2020-06-30 13:04:45 +02:00
inode.h gfs2: Minor gfs2_lookup_by_inum cleanup 2020-06-05 20:19:21 +02:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
lock_dlm.c gfs2: Force withdraw to replay journals and wait for it to finish 2020-02-27 07:53:12 -06:00
log.c gfs2: eliminate GIF_ORDERED in favor of list_empty 2020-07-03 12:05:34 +02:00
log.h gfs2: eliminate GIF_ORDERED in favor of list_empty 2020-07-03 12:05:34 +02:00
lops.c gfs2: Even more gfs2_find_jhead fixes 2020-05-29 17:00:24 +02:00
lops.h gfs2: Remove active journal side effect from gfs2_write_log_header 2019-11-12 15:17:53 +01:00
main.c gfs2: eliminate GIF_ORDERED in favor of list_empty 2020-07-03 12:05:34 +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
meta_io.c gfs2: fix withdraw sequence deadlock 2020-05-06 21:25:26 +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: read-only mounts should grab the sd_freeze_gl glock 2020-07-03 12:05:35 +02:00
quota.c mm: remove the pgprot argument to __vmalloc 2020-06-02 10:59:11 -07:00
quota.h gfs2: move privileged user check to gfs2_quota_lock_check 2020-05-08 18:47:58 +02:00
recovery.c gfs2: When freezing gfs2, use GL_EXACT and not GL_NOCACHE 2020-07-03 12:05:35 +02:00
recovery.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
rgrp.c gfs2: Turn gl_delete into a delayed work 2020-06-05 20:19:21 +02:00
rgrp.h gfs2: Split gfs2_rsqa_delete into gfs2_rs_delete and gfs2_qa_put 2020-03-27 14:08:04 -05:00
super.c gfs2: When freezing gfs2, use GL_EXACT and not GL_NOCACHE 2020-07-03 12:05:35 +02:00
super.h gfs2: Force withdraw to replay journals and wait for it to finish 2020-02-27 07:53:12 -06:00
sys.c gfs2: Force withdraw to replay journals and wait for it to finish 2020-02-27 07:53:12 -06:00
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: new slab for transactions 2020-06-05 21:24:25 +02:00
trans.h gfs2: new slab for transactions 2020-06-05 21:24:25 +02:00
util.c gfs2: new slab for transactions 2020-06-05 21:24:25 +02:00
util.h gfs2: new slab for transactions 2020-06-05 21:24:25 +02:00
xattr.c gfs2: Change inode qa_data to allow multiple users 2020-03-27 14:08:04 -05:00
xattr.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00