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Btrfs: remove unnecessary btrfs_mark_buffer_dirty in split_leaf

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When we're not able to get enough space through splitting leaf,
we'd create a new sibling leaf instead, and it's possible that we return
 a zero-nritem sibling leaf and mark it dirty before it's in a consistent
state.  With CONFIG_BTRFS_FS_CHECK_INTEGRITY=y, the integrity check of
check_leaf will report panic due to this zero-nritem non-root leaf.

This removes the unnecessary btrfs_mark_buffer_dirty.

Reported-by: Filipe Manana <fdmanana@gmail.com>
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Liu Bo 2016-09-07 14:48:28 -07:00 committed by David Sterba
parent 4867268c57
commit 196e02490c
1 changed files with 5 additions and 1 deletions
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6
fs/btrfs/ctree.c
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@ -4311,7 +4311,11 @@ again:
if (path->slots[1] == 0)
fixup_low_keys(fs_info, path, &disk_key, 1);
}
btrfs_mark_buffer_dirty(right);
/*
* We create a new leaf 'right' for the required ins_len and
* we'll do btrfs_mark_buffer_dirty() on this leaf after copying
* the content of ins_len to 'right'.
*/
return ret;
}