Hello,
I'd like to request the above patch be included into the 3.12 stable
tree. I've attached a backport and have run xfstest and no regressions
were observed. This fixes hang in generic/361 test.
Regards,
Nikolay
>From 5c6863019e453bee3ac6dbdf1fbf0d9125942c3b Mon Sep 17 00:00:00 2001
From: Zhaohongjiang <zhaohongjiang@xxxxxxxxxx>
Date: Mon, 12 Oct 2015 15:28:39 +1100
Subject: [PATCH] cancel the setfilesize transation when io error happen
When I ran xfstest/073 case, the remount process was blocked to wait
transactions to be zero. I found there was a io error happened, and
the setfilesize transaction was not released properly. We should add
the changes to cancel the io error in this case.
Reproduction steps:
1. dd if=/dev/zero of=xfs1.img bs=1M count=2048
2. mkfs.xfs xfs1.img
3. losetup -f ./xfs1.img /dev/loop0
4. mount -t xfs /dev/loop0 /home/test_dir/
5. mkdir /home/test_dir/test
6. mkfs.xfs -dfile,name=image,size=2g
7. mount -t xfs -o loop image /home/test_dir/test
8. cp a file bigger than 2g to /home/test_dir/test
9. mount -t xfs -o remount,ro /home/test_dir/test
[ dchinner: moved io error detection to xfs_setfilesize_ioend() after
transaction context restoration. ]
[ nborisov: Adjusted context for 3.12 ]
Signed-off-by: Zhao Hongjiang <zhaohongjiang@xxxxxxxxxx>
Signed-off-by: Dave Chinner <david@xxxxxxxxxxxxx>
Signed-off-by: Nikolay Borisov <nborisov@xxxxxxxx>
---
fs/xfs/xfs_aops.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index ab28ad576b16..6394e3f51553 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -150,6 +150,12 @@ xfs_setfilesize(
rwsem_acquire_read(&VFS_I(ip)->i_sb->s_writers.lock_map[SB_FREEZE_FS-1],
0, 1, _THIS_IP_);
+ /* we abort the update if there was an IO error */
+ if (ioend->io_error) {
+ xfs_trans_cancel(tp, 0);
+ return ioend->io_error;
+ }
+
xfs_ilock(ip, XFS_ILOCK_EXCL);
isize = xfs_new_eof(ip, ioend->io_offset + ioend->io_size);
if (!isize) {
@@ -205,14 +211,17 @@ xfs_end_io(
ioend->io_error = -EIO;
goto done;
}
- if (ioend->io_error)
- goto done;
/*
* For unwritten extents we need to issue transactions to convert a
* range to normal written extens after the data I/O has finished.
+ * Detecting and handling completion IO errors is done individually
+ * for each case as different cleanup operations need to be performed
+ * on error.
*/
if (ioend->io_type == XFS_IO_UNWRITTEN) {
+ if (ioend->io_error)
+ goto done;
error = xfs_iomap_write_unwritten(ip, ioend->io_offset,
ioend->io_size);
} else if (ioend->io_isdirect && xfs_ioend_is_append(ioend)) {
--
2.7.4
