This is a note to let you know that I've just added the patch titled
zonefs: fix to update .i_wr_refcnt correctly in zonefs_open_zone()
to the 5.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
zonefs-fix-to-update-.i_wr_refcnt-correctly-in-zonefs_open_zone.patch
and it can be found in the queue-5.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 6980d29ce4da223ad7f0751c7f1d61d3c6b54ab3 Mon Sep 17 00:00:00 2001
From: Chao Yu <yuchao0@xxxxxxxxxx>
Date: Tue, 16 Mar 2021 20:30:26 +0800
Subject: zonefs: fix to update .i_wr_refcnt correctly in zonefs_open_zone()
From: Chao Yu <yuchao0@xxxxxxxxxx>
commit 6980d29ce4da223ad7f0751c7f1d61d3c6b54ab3 upstream.
In zonefs_open_zone(), if opened zone count is larger than
.s_max_open_zones threshold, we missed to recover .i_wr_refcnt,
fix this.
Fixes: b5c00e975779 ("zonefs: open/close zone on file open/close")
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Chao Yu <yuchao0@xxxxxxxxxx>
Signed-off-by: Damien Le Moal <damien.lemoal@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/zonefs/super.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
--- a/fs/zonefs/super.c
+++ b/fs/zonefs/super.c
@@ -1032,9 +1032,7 @@ static int zonefs_open_zone(struct inode
mutex_lock(&zi->i_truncate_mutex);
- zi->i_wr_refcnt++;
- if (zi->i_wr_refcnt == 1) {
-
+ if (!zi->i_wr_refcnt) {
if (atomic_inc_return(&sbi->s_open_zones) > sbi->s_max_open_zones) {
atomic_dec(&sbi->s_open_zones);
ret = -EBUSY;
@@ -1044,7 +1042,6 @@ static int zonefs_open_zone(struct inode
if (i_size_read(inode) < zi->i_max_size) {
ret = zonefs_zone_mgmt(inode, REQ_OP_ZONE_OPEN);
if (ret) {
- zi->i_wr_refcnt--;
atomic_dec(&sbi->s_open_zones);
goto unlock;
}
@@ -1052,6 +1049,8 @@ static int zonefs_open_zone(struct inode
}
}
+ zi->i_wr_refcnt++;
+
unlock:
mutex_unlock(&zi->i_truncate_mutex);
Patches currently in stable-queue which might be from yuchao0@xxxxxxxxxx are
queue-5.11/zonefs-fix-to-update-.i_wr_refcnt-correctly-in-zonefs_open_zone.patch
