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Btrfs: update to the right index of defragment

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When we use autodefrag, we forget to update the index which indicates
the last page we've dirty.  And we'll set dirty flags on a same set of
pages again and again.

Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Liu Bo 2012-03-29 09:57:45 -04:00 • committed by Chris Mason
parent 66c2689226
commit e1f041e14c
1 changed files with 3 additions and 0 deletions
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3
fs/btrfs/ioctl.c
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@ -1186,6 +1186,9 @@ int btrfs_defrag_file(struct inode *inode, struct file *file,
if (newer_off == (u64)-1) if (newer_off == (u64)-1)
break; break;
if (ret > 0)
i += ret;
newer_off = max(newer_off + 1, newer_off = max(newer_off + 1,
(u64)i << PAGE_CACHE_SHIFT); (u64)i << PAGE_CACHE_SHIFT);