From: Robbie Ko <robbieko@xxxxxxxxxxxx>
In run_delalloc_nocow, maybe not release subv_writers conter,
will lead to create snapshot hang.
Signed-off-by: Robbie Ko <robbieko@xxxxxxxxxxxx>
---
fs/btrfs/inode.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index e6811c4..9722554 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1386,11 +1386,17 @@ next_slot:
* this ensure that csum for a given extent are
* either valid or do not exist.
*/
- if (csum_exist_in_range(root, disk_bytenr, num_bytes))
+ if (csum_exist_in_range(root, disk_bytenr, num_bytes)) {
+ if (!nolock)
+ btrfs_end_write_no_snapshoting(root);
goto out_check;
+ }
if (!btrfs_inc_nocow_writers(root->fs_info,
- disk_bytenr))
+ disk_bytenr)) {
+ if (!nolock)
+ btrfs_end_write_no_snapshoting(root);
goto out_check;
+ }
nocow = 1;
} else if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
extent_end = found_key.offset +
--
1.9.1
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