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| author | Darrick J. Wong <darrick.wong@oracle.com> | 2020-01-24 02:01:15 +0100 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2020-01-26 23:32:25 +0100 |
| commit | 32dff5e5d1b5889b068e411d490453834c639701 (patch) | |
| tree | b4b71c542bd746f985c490e9bfca29ec39edf53d /fs/xfs | |
| parent | xfs: remove unused variable 'done' (diff) | |
| download | linux-32dff5e5d1b5889b068e411d490453834c639701.tar.xz linux-32dff5e5d1b5889b068e411d490453834c639701.zip | |
xfs: make xfs_buf_alloc return an error code
Convert _xfs_buf_alloc() 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>
Diffstat (limited to 'fs/xfs')
| -rw-r--r-- | fs/xfs/xfs_buf.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c index a0229c368e78..f9a6cf71f4ab 100644 --- a/fs/xfs/xfs_buf.c +++ b/fs/xfs/xfs_buf.c @@ -198,20 +198,22 @@ xfs_buf_free_maps( } } -static struct xfs_buf * +static int _xfs_buf_alloc( struct xfs_buftarg *target, struct xfs_buf_map *map, int nmaps, - xfs_buf_flags_t flags) + xfs_buf_flags_t flags, + struct xfs_buf **bpp) { struct xfs_buf *bp; int error; int i; + *bpp = NULL; bp = kmem_zone_zalloc(xfs_buf_zone, KM_NOFS); if (unlikely(!bp)) - return NULL; + return -ENOMEM; /* * We don't want certain flags to appear in b_flags unless they are @@ -239,7 +241,7 @@ _xfs_buf_alloc( error = xfs_buf_get_maps(bp, nmaps); if (error) { kmem_cache_free(xfs_buf_zone, bp); - return NULL; + return error; } bp->b_bn = map[0].bm_bn; @@ -256,7 +258,8 @@ _xfs_buf_alloc( XFS_STATS_INC(bp->b_mount, xb_create); trace_xfs_buf_init(bp, _RET_IP_); - return bp; + *bpp = bp; + return 0; } /* @@ -715,8 +718,8 @@ xfs_buf_get_map( return NULL; } - new_bp = _xfs_buf_alloc(target, map, nmaps, flags); - if (unlikely(!new_bp)) + error = _xfs_buf_alloc(target, map, nmaps, flags, &new_bp); + if (error) return NULL; error = xfs_buf_allocate_memory(new_bp, flags); @@ -917,8 +920,8 @@ xfs_buf_get_uncached( DEFINE_SINGLE_BUF_MAP(map, XFS_BUF_DADDR_NULL, numblks); /* flags might contain irrelevant bits, pass only what we care about */ - bp = _xfs_buf_alloc(target, &map, 1, flags & XBF_NO_IOACCT); - if (unlikely(bp == NULL)) + error = _xfs_buf_alloc(target, &map, 1, flags & XBF_NO_IOACCT, &bp); + if (error) goto fail; page_count = PAGE_ALIGN(numblks << BBSHIFT) >> PAGE_SHIFT; |