diff options
| -rw-r--r-- | fs/xfs/libxfs/xfs_ag.c | 21 | ||||
| -rw-r--r-- | fs/xfs/xfs_buf.c | 25 | ||||
| -rw-r--r-- | fs/xfs/xfs_buf.h | 4 |
3 files changed, 30 insertions, 20 deletions
diff --git a/fs/xfs/libxfs/xfs_ag.c b/fs/xfs/libxfs/xfs_ag.c index 14fbdf22b7e7..08d6beb54f8c 100644 --- a/fs/xfs/libxfs/xfs_ag.c +++ b/fs/xfs/libxfs/xfs_ag.c @@ -23,25 +23,28 @@ #include "xfs_ag_resv.h" #include "xfs_health.h" -static struct xfs_buf * +static int xfs_get_aghdr_buf( struct xfs_mount *mp, xfs_daddr_t blkno, size_t numblks, + struct xfs_buf **bpp, const struct xfs_buf_ops *ops) { struct xfs_buf *bp; + int error; - bp = xfs_buf_get_uncached(mp->m_ddev_targp, numblks, 0); - if (!bp) - return NULL; + error = xfs_buf_get_uncached(mp->m_ddev_targp, numblks, 0, &bp); + if (error) + return error; xfs_buf_zero(bp, 0, BBTOB(bp->b_length)); bp->b_bn = blkno; bp->b_maps[0].bm_bn = blkno; bp->b_ops = ops; - return bp; + *bpp = bp; + return 0; } static inline bool is_log_ag(struct xfs_mount *mp, struct aghdr_init_data *id) @@ -340,13 +343,13 @@ xfs_ag_init_hdr( struct aghdr_init_data *id, aghdr_init_work_f work, const struct xfs_buf_ops *ops) - { struct xfs_buf *bp; + int error; - bp = xfs_get_aghdr_buf(mp, id->daddr, id->numblks, ops); - if (!bp) - return -ENOMEM; + error = xfs_get_aghdr_buf(mp, id->daddr, id->numblks, &bp, ops); + if (error) + return error; (*work)(mp, bp, id); diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c index 871abaabff3d..b420e865b32e 100644 --- a/fs/xfs/xfs_buf.c +++ b/fs/xfs/xfs_buf.c @@ -902,12 +902,13 @@ xfs_buf_read_uncached( const struct xfs_buf_ops *ops) { struct xfs_buf *bp; + int error; *bpp = NULL; - bp = xfs_buf_get_uncached(target, numblks, flags); - if (!bp) - return -ENOMEM; + error = xfs_buf_get_uncached(target, numblks, flags, &bp); + if (error) + return error; /* set up the buffer for a read IO */ ASSERT(bp->b_map_count == 1); @@ -918,7 +919,7 @@ xfs_buf_read_uncached( xfs_buf_submit(bp); if (bp->b_error) { - int error = bp->b_error; + error = bp->b_error; xfs_buf_relse(bp); return error; } @@ -927,17 +928,20 @@ xfs_buf_read_uncached( return 0; } -xfs_buf_t * +int xfs_buf_get_uncached( struct xfs_buftarg *target, size_t numblks, - int flags) + int flags, + struct xfs_buf **bpp) { unsigned long page_count; int error, i; struct xfs_buf *bp; DEFINE_SINGLE_BUF_MAP(map, XFS_BUF_DADDR_NULL, numblks); + *bpp = NULL; + /* flags might contain irrelevant bits, pass only what we care about */ error = _xfs_buf_alloc(target, &map, 1, flags & XBF_NO_IOACCT, &bp); if (error) @@ -950,8 +954,10 @@ xfs_buf_get_uncached( for (i = 0; i < page_count; i++) { bp->b_pages[i] = alloc_page(xb_to_gfp(flags)); - if (!bp->b_pages[i]) + if (!bp->b_pages[i]) { + error = -ENOMEM; goto fail_free_mem; + } } bp->b_flags |= _XBF_PAGES; @@ -963,7 +969,8 @@ xfs_buf_get_uncached( } trace_xfs_buf_get_uncached(bp, _RET_IP_); - return bp; + *bpp = bp; + return 0; fail_free_mem: while (--i >= 0) @@ -973,7 +980,7 @@ xfs_buf_get_uncached( xfs_buf_free_maps(bp); kmem_cache_free(xfs_buf_zone, bp); fail: - return NULL; + return error; } /* diff --git a/fs/xfs/xfs_buf.h b/fs/xfs/xfs_buf.h index c3aa4e322243..7f7bd1edd99e 100644 --- a/fs/xfs/xfs_buf.h +++ b/fs/xfs/xfs_buf.h @@ -242,8 +242,8 @@ xfs_buf_readahead( return xfs_buf_readahead_map(target, &map, 1, ops); } -struct xfs_buf *xfs_buf_get_uncached(struct xfs_buftarg *target, size_t numblks, - int flags); +int xfs_buf_get_uncached(struct xfs_buftarg *target, size_t numblks, int flags, + struct xfs_buf **bpp); int xfs_buf_read_uncached(struct xfs_buftarg *target, xfs_daddr_t daddr, size_t numblks, int flags, struct xfs_buf **bpp, const struct xfs_buf_ops *ops); |