| Message ID | 4E608C47.6060308@cn.fujitsu.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 6f2b257..57aa5b7 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -1046,7 +1046,7 @@ int btrfs_defrag_file(struct inode *inode, struct file *file, i = range->start >> PAGE_CACHE_SHIFT; } if (!max_to_defrag) - max_to_defrag = last_index - 1; + max_to_defrag = last_index; while (i <= last_index && defrag_count < max_to_defrag) { /*
It's off-by-one, and thus we may skip the last page while defragmenting. An example case: # create /mnt/file with 2 4K file extents # btrfs fi defrag /mnt/file # sync # filefrag /mnt/file /mnt/file: 2 extents found So it's not defragmented. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> --- fs/btrfs/ioctl.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)