diff options
| author | Zhang Yi <yi.zhang@huawei.com> | 2024-01-27 09:58:04 +0800 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2024-02-01 23:59:21 -0500 |
| commit | 874eaba96d39334fe9c729ff631e65523616d4d8 (patch) | |
| tree | 401e4a6a4340ae92b68473fb2f02a34a63f5829f /fs/ext4/extents.c | |
| parent | 9f1118223aa080021fe9751fa221590654d27669 (diff) | |
| download | linux-874eaba96d39334fe9c729ff631e65523616d4d8.tar.gz | |
ext4: make ext4_map_blocks() distinguish delalloc only extent
Add a new map flag EXT4_MAP_DELAYED to indicate the mapping range is a
delayed allocated only (not unwritten) one, and making
ext4_map_blocks() can distinguish it, no longer mixing it with holes.
Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20240127015825.1608160-6-yi.zhang@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/extents.c')
| -rw-r--r-- | fs/ext4/extents.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index c5b54fb9eb8bd..7669d154c05e0 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -4076,8 +4076,11 @@ again: /* * The delalloc extent containing lblk, it must have been * added after ext4_map_blocks() checked the extent status - * tree, adjust the length to the delalloc extent's after - * lblk. + * tree so we are not holding i_rwsem and delalloc info is + * only stabilized by i_data_sem we are going to release + * soon. Don't modify the extent status tree and report + * extent as a hole, just adjust the length to the delalloc + * extent's after lblk. */ len = es.es_lblk + es.es_len - lblk; return len; |