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| author | Xin Yin <yinxin.x@bytedance.com> | 2021-12-21 05:28:39 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-27 13:05:16 +0300 |
| commit | 50bc43bc1ce0821e7042ab5ffb7a943e0ef854ba (patch) | |
| tree | f0f8f057fc0f2a73e2a87b866a729dfe53c0ade4 /fs/ext4 | |
| parent | 85cc4554eea845ae0a1b06f43df6b566ff6776d2 (diff) | |
| download | linux-50bc43bc1ce0821e7042ab5ffb7a943e0ef854ba.tar.xz | |
ext4: fix fast commit may miss tracking range for FALLOC_FL_ZERO_RANGE
commit 5e4d0eba1ccaf19f93222abdeda5a368be141785 upstream.
when call falloc with FALLOC_FL_ZERO_RANGE, to set an range to unwritten,
which has been already initialized. If the range is align to blocksize,
fast commit will not track range for this change.
Also track range for unwritten range in ext4_map_blocks().
Signed-off-by: Xin Yin <yinxin.x@bytedance.com>
Reviewed-by: Harshad Shirwadkar <harshadshirwadkar@gmail.com>
Link: https://lore.kernel.org/r/20211221022839.374606-1-yinxin.x@bytedance.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/ext4')
| -rw-r--r-- | fs/ext4/extents.c | 2 | ||||
| -rw-r--r-- | fs/ext4/inode.c | 7 |
2 files changed, 4 insertions, 5 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index daa83525749b..f9bd3231a141 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -4645,8 +4645,6 @@ static long ext4_zero_range(struct file *file, loff_t offset, ret = ext4_mark_inode_dirty(handle, inode); if (unlikely(ret)) goto out_handle; - ext4_fc_track_range(handle, inode, offset >> inode->i_sb->s_blocksize_bits, - (offset + len - 1) >> inode->i_sb->s_blocksize_bits); /* Zero out partial block at the edges of the range */ ret = ext4_zero_partial_blocks(handle, inode, offset, len); if (ret >= 0) diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 607b11852630..899639974a55 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -741,10 +741,11 @@ out_sem: if (ret) return ret; } - ext4_fc_track_range(handle, inode, map->m_lblk, - map->m_lblk + map->m_len - 1); } - + if (retval > 0 && (map->m_flags & EXT4_MAP_UNWRITTEN || + map->m_flags & EXT4_MAP_MAPPED)) + ext4_fc_track_range(handle, inode, map->m_lblk, + map->m_lblk + map->m_len - 1); if (retval < 0) ext_debug(inode, "failed with err %d\n", retval); return retval; |