Andreas Gruenbacher 3591293c19 gfs2: No short reads or writes upon glock contention ...

[ Upstream commit 296abc0d91 ]

Commit 00bfe02f47 ("gfs2: Fix mmap + page fault deadlocks for buffered
I/O") changed gfs2_file_read_iter() and gfs2_file_buffered_write() to
allow dropping the inode glock while faulting in user buffers.  When the
lock was dropped, a short result was returned to indicate that the
operation was interrupted.

As pointed out by Linus (see the link below), this behavior is broken
and the operations should always re-acquire the inode glock and resume
the operation instead.

Link: https://lore.kernel.org/lkml/CAHk-=whaz-g_nOOoo8RRiWNjnv2R+h6_xk2F1J4TuSRxk1MtLw@mail.gmail.com/
Fixes: 00bfe02f47 ("gfs2: Fix mmap + page fault deadlocks for buffered I/O")
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2022-05-09 09:14:39 +02:00

..

acl.c

vfs: add rcu argument to ->get_acl() callback

2021-08-18 22:08:24 +02:00

acl.h

vfs: add rcu argument to ->get_acl() callback

2021-08-18 22:08:24 +02:00

aops.c

gfs2: Don't release and reacquire local statfs bh

2021-08-20 09:03:46 -05:00

aops.h

gfs2: mark stuffed_readpage static

2019-07-03 14:45:18 +02:00

bmap.c

gfs2: Move the inode glock locking to gfs2_file_buffered_write

2022-05-01 17:22:30 +02:00

bmap.h

gfs2: Clean up gfs2_unstuff_dinode

2021-06-29 10:56:51 +02:00

dentry.c

gfs2: untangle the logic in gfs2_drevalidate

2019-09-03 09:42:41 +02:00

dir.c

gfs2: Clean up gfs2_unstuff_dinode

2021-06-29 10:56:51 +02:00

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: No short reads or writes upon glock contention

2022-05-09 09:14:39 +02:00

gfs2.h

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398

2019-06-05 17:37:12 +02:00

glock.c

gfs2: Introduce flag for glock holder auto-demotion

2022-05-01 17:22:30 +02:00

glock.h

gfs2: Introduce flag for glock holder auto-demotion

2022-05-01 17:22:30 +02:00

glops.c

gfs2: Delay withdraw from atomic context

2021-08-20 09:03:46 -05:00

glops.h

gfs2: Split up gfs2_meta_sync into inode and rgrp versions

2020-10-29 22:16:46 +01:00

incore.h

gfs2: Eliminate ip->i_gh

2022-05-01 17:22:30 +02:00

inode.c

gfs2: gfs2_setattr_size error path fix

2022-04-08 14:24:10 +02:00

inode.h

Merge tag 'gfs2-for-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2

2021-04-29 10:33:35 -07:00

Kconfig

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21 10:50:46 +02:00

lock_dlm.c

gfs2: Don't call dlm after protocol is unmounted

2021-08-20 09:03:46 -05:00

log.c

gfs2: tiny cleanup in gfs2_log_reserve

2021-08-19 12:31:17 -05:00

log.h

gfs2: Clean up revokes on normal withdraws

2021-05-20 13:31:37 +02:00

lops.c

gfs2: be more verbose replaying invalid rgrp blocks

2021-08-19 12:31:17 -05:00

lops.h

gfs2: Clean up revokes on normal withdraws

2021-05-20 13:31:37 +02:00

main.c

gfs2: amend SLAB_RECLAIM_ACCOUNT on gfs2 related slab cache

2021-01-22 12:19:17 -05:00

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: don't stop reads while withdraw in progress

2021-08-20 09:03:46 -05:00

meta_io.h

gfs2: Turn gfs2_meta_indirect_buffer into gfs2_meta_buffer

2021-04-03 21:38:12 +02:00

ops_fstype.c

gfs2: Mark journal inodes as "don't cache"

2021-08-20 09:03:46 -05:00

quota.c

gfs2: Clean up gfs2_unstuff_dinode

2021-06-29 10:56:51 +02:00

quota.h

gfs2: move privileged user check to gfs2_quota_lock_check

2020-05-08 18:47:58 +02:00

recovery.c

gfs2: Fix fall-through warnings for Clang

2021-04-20 22:38:21 +02:00

recovery.h

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398

2019-06-05 17:37:12 +02:00

rgrp.c

gfs2: assign rgrp glock before compute_bitstructs

2022-04-27 14:38:51 +02:00

rgrp.h

gfs2: gfs2_setattr_size error path fix

2022-04-08 14:24:10 +02:00

super.c

gfs2: gfs2_setattr_size error path fix

2022-04-08 14:24:10 +02:00

super.h

gfs2: Don't release and reacquire local statfs bh

2021-08-20 09:03:46 -05:00

sys.c

gfs2: Add new sysfs file for gfs2 status

2021-04-08 15:07:21 +02:00

sys.h

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398

2019-06-05 17:37:12 +02:00

trace_gfs2.h

gfs2: Add per-reservation reserved block accounting

2021-02-17 19:30:26 +01:00

trans.c

gfs2: fix use-after-free in trans_drain

2021-03-07 17:04:55 +01:00

trans.h

Merge branches 'rgrp-glock-sharing' and 'gfs2-revoke' from https://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2.git

2021-02-23 18:54:22 +01:00

util.c

gfs2: Mark journal inodes as "don't cache"

2021-08-20 09:03:46 -05:00

util.h

gfs2: don't stop reads while withdraw in progress

2021-08-20 09:03:46 -05:00

xattr.c

gfs2: Fix a number of kernel-doc warnings

2021-04-09 22:14:13 +02:00

xattr.h

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398

2019-06-05 17:37:12 +02:00