xfs: restore allocation trylock iteration

It was accidentally dropped when refactoring the allocation code,
resulting in the AG iteration always doing blocking AG iteration.
This results in a small performance regression for a specific fsmark
test that runs more user data writer threads than there are AGs.

Reported-by: kernel test robot <oliver.sang@intel.com>
Fixes: 2edf06a50f5b ("xfs: factor xfs_alloc_vextent_this_ag() for _iterate_ags()")
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>

diff --git a/fs/xfs/libxfs/xfs_alloc.c b/fs/xfs/libxfs/xfs_alloc.c
index fdfa08c..61eb65b 100644 (file)
--- a/fs/xfs/libxfs/xfs_alloc.c
+++ b/fs/xfs/libxfs/xfs_alloc.c
@@ -3187,7 +3187,8 @@ xfs_alloc_vextent_check_args(
  */
 static int
 xfs_alloc_vextent_prepare_ag(
-       struct xfs_alloc_arg    *args)
+       struct xfs_alloc_arg    *args,
+       uint32_t                flags)
 {
        bool                    need_pag = !args->pag;
        int                     error;
@@ -3196,7 +3197,7 @@ xfs_alloc_vextent_prepare_ag(
                args->pag = xfs_perag_get(args->mp, args->agno);
 
        args->agbp = NULL;
-       error = xfs_alloc_fix_freelist(args, 0);
+       error = xfs_alloc_fix_freelist(args, flags);
        if (error) {
                trace_xfs_alloc_vextent_nofix(args);
                if (need_pag)
@@ -3336,7 +3337,7 @@ xfs_alloc_vextent_this_ag(
                return error;
        }
 
-       error = xfs_alloc_vextent_prepare_ag(args);
+       error = xfs_alloc_vextent_prepare_ag(args, 0);
        if (!error && args->agbp)
                error = xfs_alloc_ag_vextent_size(args);
 
@@ -3380,7 +3381,7 @@ restart:
        for_each_perag_wrap_range(mp, start_agno, restart_agno,
                        mp->m_sb.sb_agcount, agno, args->pag) {
                args->agno = agno;
-               error = xfs_alloc_vextent_prepare_ag(args);
+               error = xfs_alloc_vextent_prepare_ag(args, flags);
                if (error)
                        break;
                if (!args->agbp) {
@@ -3546,7 +3547,7 @@ xfs_alloc_vextent_exact_bno(
                return error;
        }
 
-       error = xfs_alloc_vextent_prepare_ag(args);
+       error = xfs_alloc_vextent_prepare_ag(args, 0);
        if (!error && args->agbp)
                error = xfs_alloc_ag_vextent_exact(args);
 
@@ -3587,7 +3588,7 @@ xfs_alloc_vextent_near_bno(
        if (needs_perag)
                args->pag = xfs_perag_grab(mp, args->agno);
 
-       error = xfs_alloc_vextent_prepare_ag(args);
+       error = xfs_alloc_vextent_prepare_ag(args, 0);
        if (!error && args->agbp)
                error = xfs_alloc_ag_vextent_near(args);