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xfs: make xfs_buf_get_map return an error code

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Convert xfs_buf_get_map() to return numeric error codes like most
everywhere else in xfs.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Darrick J. Wong
2020-01-23 17:01:15 -08:00
parent 32dff5e5d1
commit 3848b5f670
3 changed files with 34 additions and 37 deletions
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13
fs/xfs/xfs_buf.h
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@@ -192,9 +192,8 @@ struct xfs_buf *xfs_buf_incore(struct xfs_buftarg *target,
xfs_daddr_t blkno, size_t numblks,
xfs_buf_flags_t flags);
struct xfs_buf *xfs_buf_get_map(struct xfs_buftarg *target,
struct xfs_buf_map *map, int nmaps,
xfs_buf_flags_t flags);
int xfs_buf_get_map(struct xfs_buftarg *target, struct xfs_buf_map *map,
int nmaps, xfs_buf_flags_t flags, struct xfs_buf **bpp);
struct xfs_buf *xfs_buf_read_map(struct xfs_buftarg *target,
struct xfs_buf_map *map, int nmaps,
xfs_buf_flags_t flags,
@@ -209,8 +208,14 @@ xfs_buf_get(
xfs_daddr_t blkno,
size_t numblks)
{
struct xfs_buf *bp;
int error;
DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
return xfs_buf_get_map(target, &map, 1, 0);
error = xfs_buf_get_map(target, &map, 1, 0, &bp);
if (error)
return NULL;
return bp;
}
static inline struct xfs_buf *