* [PATCH 4.14 56/56] stable/btrfs: fix backport bug in d819d97ea025 ("btrfs: honor path->skip_locking in backref code")
[not found] <20190708150514.376317156@linuxfoundation.org>
@ 2019-07-08 15:13 ` Greg Kroah-Hartman
0 siblings, 0 replies; only message in thread
From: Greg Kroah-Hartman @ 2019-07-08 15:13 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Greg Kroah-Hartman, linux-btrfs, Olivier Mazouffre,
Stanislaw Gruszka, Nikolay Borisov
From: Stanislaw Gruszka <sgruszka@redhat.com>
Upstream commit 38e3eebff643 ("btrfs: honor path->skip_locking in
backref code") was incorrectly backported to 4.14.y . It misses removal
of two lines from original commit, what cause deadlock.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=203993
Reported-by: Olivier Mazouffre <olivier.mazouffre@ims-bordeaux.fr>
Fixes: d819d97ea025 ("btrfs: honor path->skip_locking in backref code")
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/btrfs/backref.c | 2 --
1 file changed, 2 deletions(-)
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -1290,8 +1290,6 @@ again:
ret = -EIO;
goto out;
}
- btrfs_tree_read_lock(eb);
- btrfs_set_lock_blocking_rw(eb, BTRFS_READ_LOCK);
if (!path->skip_locking) {
btrfs_tree_read_lock(eb);
btrfs_set_lock_blocking_rw(eb, BTRFS_READ_LOCK);
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[not found] <20190708150514.376317156@linuxfoundation.org>
2019-07-08 15:13 ` [PATCH 4.14 56/56] stable/btrfs: fix backport bug in d819d97ea025 ("btrfs: honor path->skip_locking in backref code") Greg Kroah-Hartman
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