iomap: iomap_bmap should check iomap_apply return value
Coverity caught this fairly minor bug, but we should check the return
value of iomap_apply regardless.
Coverity-id: 1437065
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
diff --git a/fs/iomap/fiemap.c b/fs/iomap/fiemap.c
index 690ef2d..bccf305 100644
--- a/fs/iomap/fiemap.c
+++ b/fs/iomap/fiemap.c
@@ -133,12 +133,16 @@
struct inode *inode = mapping->host;
loff_t pos = bno << inode->i_blkbits;
unsigned blocksize = i_blocksize(inode);
+ int ret;
if (filemap_write_and_wait(mapping))
return 0;
bno = 0;
- iomap_apply(inode, pos, blocksize, 0, ops, &bno, iomap_bmap_actor);
+ ret = iomap_apply(inode, pos, blocksize, 0, ops, &bno,
+ iomap_bmap_actor);
+ if (ret)
+ return 0;
return bno;
}
EXPORT_SYMBOL_GPL(iomap_bmap);
