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linux-next/fs/gfs2
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Andreas Gruenbacher 296abc0d91 gfs2: No short reads or writes upon glock contention 
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>
2022-04-28 15:14:48 +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 fs: Convert __set_page_dirty_buffers to block_dirty_folio 2022-03-16 13:37:04 -04:00
aops.h gfs2: mark stuffed_readpage static 2019-07-03 14:45:18 +02:00
bmap.c gfs2: Remove return value for gfs2_indirect_init 2022-03-03 15:59:21 +01:00
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 2022-04-28 15:14:48 +02:00
gfs2.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398 2019-06-05 17:37:12 +02:00
glock.c gfs2: Initialize gh_error in gfs2_glock_nq 2022-02-15 15:01:40 +01:00
glock.h gfs2: fix GL_SKIP node_scope problems 2021-10-25 08:42:19 +02:00
glops.c gfs2: dump inode object for iopen glocks 2022-01-11 16:52:44 +01:00
glops.h gfs2: Split up gfs2_meta_sync into inode and rgrp versions 2020-10-29 22:16:46 +01:00
incore.h gfs2: remove RDF_UPTODATE flag 2021-10-25 08:42:19 +02:00
inode.c gfs2: Switch lock order of inode and iopen glock 2022-02-15 15:01:40 +01:00
inode.h Changes in 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: Expect -EBUSY after canceling dlm locking requests 2022-02-15 15:01:40 +01:00
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 block: remove the per-bio/request write hint 2022-03-07 12:45:57 -07:00
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 Filesystem folio changes for 5.18 2022-03-22 18:26:56 -07:00
meta_io.h gfs2: Turn gfs2_meta_indirect_buffer into gfs2_meta_buffer 2021-04-03 21:38:12 +02:00
ops_fstype.c block: pass a block_device and opf to bio_alloc 2022-02-02 07:49:59 -07:00
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: Make sure FITRIM minlen is rounded up to fs block size 2022-03-31 20:35:38 +02:00
rgrp.h gfs2: gfs2_setattr_size error path fix 2022-02-15 15:01:40 +01:00
super.c gfs2 fixes 2022-03-31 15:57:50 -07:00
super.h gfs2: Don't release and reacquire local statfs bh 2021-08-20 09:03:46 -05:00
sys.c block: remove genhd.h 2022-02-02 07:49:59 -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: Remove 'first' trace_gfs2_promote argument 2021-10-25 08:42:19 +02:00
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: dump glocks from gfs2_consist_OBJ_i 2021-10-25 08:42:18 +02:00
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