xfs: factor out code to find the longest free extent in the AG

Signed-off-by: Dave Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

1 files changed, 2 insertions, 10 deletions

diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index 27062d0a879d..07b7d0d59d88 100644
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -2712,9 +2712,6 @@ xfs_bmap_btalloc(
         xfs_agnumber_t  startag;
         xfs_alloc_arg_t args;
         xfs_extlen_t    blen;
-        xfs_extlen_t    delta;
-        xfs_extlen_t    longest;
-        xfs_extlen_t    need;
         xfs_extlen_t    nextminlen = 0;
         xfs_perag_t     *pag;
         int             nullfb;         /* true if ap->firstblock isn't set */
@@ -2796,13 +2793,8 @@ xfs_bmap_btalloc(
                          * See xfs_alloc_fix_freelist...
                          */
                         if (pag->pagf_init) {
-                                need = XFS_MIN_FREELIST_PAG(pag, mp);
-                                delta = need > pag->pagf_flcount ?
-                                        need - pag->pagf_flcount : 0;
-                                longest = (pag->pagf_longest > delta) ?
-                                        (pag->pagf_longest - delta) :
-                                        (pag->pagf_flcount > 0 ||
-                                         pag->pagf_longest > 0);
+                                xfs_extlen_t    longest;
+                                longest = xfs_alloc_longest_free_extent(mp, pag);
                                 if (blen < longest)
                                         blen = longest;
                         } else