xfs: remove unnecessary null pointer checks from _read_agf callers

Source kernel commit: 706b8c5bc70391be510a5454f307db90b622b279

Drop the null buffer pointer checks in all code that calls
xfs_alloc_read_agf and doesn't pass XFS_ALLOC_FLAG_TRYLOCK because
they're no longer necessary.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>

diff --git a/libxfs/xfs_refcount.c b/libxfs/xfs_refcount.c
index 71d2948651b2487d90b392e4b4e1d8cfe5c8ac98..b8a45b15998bfdcf3b00df6afdf7ab98aad40e56 100644 (file)
--- a/libxfs/xfs_refcount.c
+++ b/libxfs/xfs_refcount.c
@@ -1176,8 +1176,6 @@ xfs_refcount_finish_one(
                                XFS_ALLOC_FLAG_FREEING, &agbp);
                if (error)
                        return error;
-               if (XFS_IS_CORRUPT(tp->t_mountp, !agbp))
-                       return -EFSCORRUPTED;
 
                rcur = xfs_refcountbt_init_cursor(mp, tp, agbp, agno);
                if (!rcur) {
@@ -1717,10 +1715,6 @@ xfs_refcount_recover_cow_leftovers(
        error = xfs_alloc_read_agf(mp, tp, agno, 0, &agbp);
        if (error)
                goto out_trans;
-       if (!agbp) {
-               error = -ENOMEM;
-               goto out_trans;
-       }
        cur = xfs_refcountbt_init_cursor(mp, tp, agbp, agno);
 
        /* Find all the leftover CoW staging extents. */