Commit c67cda17 authored by Yan's avatar Yan Committed by Chris Mason
Browse files

Btrfs: Fix extent_map leak in extent_bmap 



Signed-off-by: default avatarChris Mason <chris.mason@oracle.com>
parent 44ec0b71

fs/btrfs/extent_map.c

+6 −2
Original line number Diff line number Diff line
@@ -1924,6 +1924,7 @@ sector_t extent_bmap(struct address_space *mapping, sector_t iblock, 
	struct inode *inode = mapping->host;

	u64 start = iblock << inode->i_blkbits;

	u64 end = start + (1 << inode->i_blkbits) - 1;

	sector_t sector = 0;

	struct extent_map *em;



	em = get_extent(inode, NULL, 0, start, end, 0);
@@ -1932,9 +1933,12 @@ sector_t extent_bmap(struct address_space *mapping, sector_t iblock, 


	if (em->block_start == EXTENT_MAP_INLINE ||

	    em->block_start == EXTENT_MAP_HOLE)

		return 0;

		goto out;



	return (em->block_start + start - em->start) >> inode->i_blkbits;

	sector = (em->block_start + start - em->start) >> inode->i_blkbits;

out:

	free_extent_map(em);

	return sector;

}



static int add_lru(struct extent_map_tree *tree, struct extent_buffer *eb)