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Btrfs: fix memory leak of chunks' extent map

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As we're hold a ref on looking up the extent map, we need to drop the ref
before returning to callers.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
This commit is contained in:
Liu Bo 2013-09-29 10:33:16 +08:00 committed by Chris Mason
parent fa7c14947a
commit 7d3d1744f8
1 changed files with 2 additions and 0 deletions
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2
fs/btrfs/volumes.c
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@ -4488,6 +4488,7 @@ int btrfs_num_copies(struct btrfs_fs_info *fs_info, u64 logical, u64 len)
btrfs_crit(fs_info, "Invalid mapping for %Lu-%Lu, got "
"%Lu-%Lu\n", logical, logical+len, em->start,
em->start + em->len);
free_extent_map(em);
return 1;
}
@ -4668,6 +4669,7 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int rw,
btrfs_crit(fs_info, "found a bad mapping, wanted %Lu, "
"found %Lu-%Lu\n", logical, em->start,
em->start + em->len);
free_extent_map(em);
return -EINVAL;
}