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| author | Ojaswin Mujoo <ojaswin@linux.ibm.com> | 2023-11-01 22:08:10 +0530 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2024-01-04 23:28:47 -0500 |
| commit | 92573369144f40397e8514440afdf59f24905b40 (patch) | |
| tree | d0a4b5659a24155aec389248e65130368a330fca /fs/ext4/extents.c | |
| parent | e89fdcc425b6feea4dfb33877e9256757905d763 (diff) | |
| download | linux-92573369144f40397e8514440afdf59f24905b40.tar.gz | |
ext4: treat end of range as exclusive in ext4_zero_range()
The call to filemap_write_and_wait_range() assumes the range passed to be
inclusive, so fix the call to make sure we follow that.
Signed-off-by: Ojaswin Mujoo <ojaswin@linux.ibm.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/e503107a7c73a2b68dec645c5ad798c437717c45.1698856309.git.ojaswin@linux.ibm.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/extents.c')
| -rw-r--r-- | fs/ext4/extents.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index d5efe076d3d3f..01299b55a567a 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -4523,7 +4523,8 @@ static long ext4_zero_range(struct file *file, loff_t offset, * Round up offset. This is not fallocate, we need to zero out * blocks, so convert interior block aligned part of the range to * unwritten and possibly manually zero out unaligned parts of the - * range. + * range. Here, start and partial_begin are inclusive, end and + * partial_end are exclusive. */ start = round_up(offset, 1 << blkbits); end = round_down((offset + len), 1 << blkbits); @@ -4609,7 +4610,8 @@ static long ext4_zero_range(struct file *file, loff_t offset, * disk in case of crash before zeroing trans is committed. */ if (ext4_should_journal_data(inode)) { - ret = filemap_write_and_wait_range(mapping, start, end); + ret = filemap_write_and_wait_range(mapping, start, + end - 1); if (ret) { filemap_invalidate_unlock(mapping); goto out_mutex; |