1 files changed, 60 insertions, 53 deletions

diff --git a/fs/xfs/xfs_alloc.c b/fs/xfs/xfs_alloc.c
index eef6763f3a67..e80dda3437d1 100644
--- a/fs/xfs/xfs_alloc.c
+++ b/fs/xfs/xfs_alloc.c
@@ -1477,8 +1477,10 @@ xfs_alloc_ag_vextent_small(
         /*
          * Can't allocate from the freelist for some reason.
          */
-        else
+        else {
+                fbno = NULLAGBLOCK;
                 flen = 0;
+        }
         /*
          * Can't do the allocation, give up.
          */
@@ -1835,40 +1837,47 @@ xfs_alloc_fix_freelist(
                                 &agbp)))
                         return error;
                 if (!pag->pagf_init) {
+                        ASSERT(flags & XFS_ALLOC_FLAG_TRYLOCK);
+                        ASSERT(!(flags & XFS_ALLOC_FLAG_FREEING));
                         args->agbp = NULL;
                         return 0;
                 }
         } else
                 agbp = NULL;
 
-        /* If this is a metadata preferred pag and we are user data
+        /*
+         * If this is a metadata preferred pag and we are user data
          * then try somewhere else if we are not being asked to
          * try harder at this point
          */
-        if (pag->pagf_metadata && args->userdata && flags) {
+        if (pag->pagf_metadata && args->userdata &&
+            (flags & XFS_ALLOC_FLAG_TRYLOCK)) {
+                ASSERT(!(flags & XFS_ALLOC_FLAG_FREEING));
                 args->agbp = NULL;
                 return 0;
         }
 
-        need = XFS_MIN_FREELIST_PAG(pag, mp);
-        delta = need > pag->pagf_flcount ? need - pag->pagf_flcount : 0;
-        /*
-         * If it looks like there isn't a long enough extent, or enough
-         * total blocks, reject it.
-         */
-        longest = (pag->pagf_longest > delta) ?
-                (pag->pagf_longest - delta) :
-                (pag->pagf_flcount > 0 || pag->pagf_longest > 0);
-        if (args->minlen + args->alignment + args->minalignslop - 1 > longest ||
-            (!(flags & XFS_ALLOC_FLAG_FREEING) &&
-             (int)(pag->pagf_freeblks + pag->pagf_flcount -
-                   need - args->total) <
-             (int)args->minleft)) {
-                if (agbp)
-                        xfs_trans_brelse(tp, agbp);
-                args->agbp = NULL;
-                return 0;
+        if (!(flags & XFS_ALLOC_FLAG_FREEING)) {
+                need = XFS_MIN_FREELIST_PAG(pag, mp);
+                delta = need > pag->pagf_flcount ? need - pag->pagf_flcount : 0;
+                /*
+                 * If it looks like there isn't a long enough extent, or enough
+                 * total blocks, reject it.
+                 */
+                longest = (pag->pagf_longest > delta) ?
+                        (pag->pagf_longest - delta) :
+                        (pag->pagf_flcount > 0 || pag->pagf_longest > 0);
+                if ((args->minlen + args->alignment + args->minalignslop - 1) >
+                                longest ||
+                    ((int)(pag->pagf_freeblks + pag->pagf_flcount -
+                           need - args->total) < (int)args->minleft)) {
+                        if (agbp)
+                                xfs_trans_brelse(tp, agbp);
+                        args->agbp = NULL;
+                        return 0;
+                }
         }
+
         /*
          * Get the a.g. freespace buffer.
          * Can fail if we're not blocking on locks, and it's held.
@@ -1878,6 +1887,8 @@ xfs_alloc_fix_freelist(
                                 &agbp)))
                         return error;
                 if (agbp == NULL) {
+                        ASSERT(flags & XFS_ALLOC_FLAG_TRYLOCK);
+                        ASSERT(!(flags & XFS_ALLOC_FLAG_FREEING));
                         args->agbp = NULL;
                         return 0;
                 }
@@ -1887,22 +1898,24 @@ xfs_alloc_fix_freelist(
          */
         agf = XFS_BUF_TO_AGF(agbp);
         need = XFS_MIN_FREELIST(agf, mp);
-        delta = need > be32_to_cpu(agf->agf_flcount) ?
-                (need - be32_to_cpu(agf->agf_flcount)) : 0;
         /*
          * If there isn't enough total or single-extent, reject it.
          */
-        longest = be32_to_cpu(agf->agf_longest);
-        longest = (longest > delta) ? (longest - delta) :
-                (be32_to_cpu(agf->agf_flcount) > 0 || longest > 0);
-        if (args->minlen + args->alignment + args->minalignslop - 1 > longest ||
-             (!(flags & XFS_ALLOC_FLAG_FREEING) &&
-                (int)(be32_to_cpu(agf->agf_freeblks) +
-                   be32_to_cpu(agf->agf_flcount) - need - args->total) <
-             (int)args->minleft)) {
-                xfs_trans_brelse(tp, agbp);
-                args->agbp = NULL;
-                return 0;
+        if (!(flags & XFS_ALLOC_FLAG_FREEING)) {
+                delta = need > be32_to_cpu(agf->agf_flcount) ?
+                        (need - be32_to_cpu(agf->agf_flcount)) : 0;
+                longest = be32_to_cpu(agf->agf_longest);
+                longest = (longest > delta) ? (longest - delta) :
+                        (be32_to_cpu(agf->agf_flcount) > 0 || longest > 0);
+                if ((args->minlen + args->alignment + args->minalignslop - 1) >
+                                longest ||
+                    ((int)(be32_to_cpu(agf->agf_freeblks) +
+                     be32_to_cpu(agf->agf_flcount) - need - args->total) <
+                                (int)args->minleft)) {
+                        xfs_trans_brelse(tp, agbp);
+                        args->agbp = NULL;
+                        return 0;
+                }
         }
         /*
          * Make the freelist shorter if it's too long.
@@ -1950,12 +1963,11 @@ xfs_alloc_fix_freelist(
                  * on a completely full ag.
                  */
                 if (targs.agbno == NULLAGBLOCK) {
-                        if (!(flags & XFS_ALLOC_FLAG_FREEING)) {
-                                xfs_trans_brelse(tp, agflbp);
-                                args->agbp = NULL;
-                                return 0;
-                        }
-                        break;
+                        if (flags & XFS_ALLOC_FLAG_FREEING)
+                                break;
+                        xfs_trans_brelse(tp, agflbp);
+                        args->agbp = NULL;
+                        return 0;
                 }
                 /*
                  * Put each allocated block on the list.
@@ -2011,7 +2023,7 @@ xfs_alloc_get_freelist(
         /*
          * Get the block number and update the data structures.
          */
-        bno = INT_GET(agfl->agfl_bno[be32_to_cpu(agf->agf_flfirst)], ARCH_CONVERT);
+        bno = be32_to_cpu(agfl->agfl_bno[be32_to_cpu(agf->agf_flfirst)]);
         be32_add(&agf->agf_flfirst, 1);
         xfs_trans_brelse(tp, agflbp);
         if (be32_to_cpu(agf->agf_flfirst) == XFS_AGFL_SIZE(mp))
@@ -2098,7 +2110,7 @@ xfs_alloc_put_freelist(
 {
         xfs_agf_t               *agf;   /* a.g. freespace structure */
         xfs_agfl_t              *agfl;  /* a.g. free block array */
-        xfs_agblock_t           *blockp;/* pointer to array entry */
+        __be32                  *blockp;/* pointer to array entry */
         int                     error;
 #ifdef XFS_ALLOC_TRACE
         static char             fname[] = "xfs_alloc_put_freelist";
@@ -2122,7 +2134,7 @@ xfs_alloc_put_freelist(
         pag->pagf_flcount++;
         ASSERT(be32_to_cpu(agf->agf_flcount) <= XFS_AGFL_SIZE(mp));
         blockp = &agfl->agfl_bno[be32_to_cpu(agf->agf_fllast)];
-        INT_SET(*blockp, ARCH_CONVERT, bno);
+        *blockp = cpu_to_be32(bno);
         TRACE_MODAGF(NULL, agf, XFS_AGF_FLLAST | XFS_AGF_FLCOUNT);
         xfs_alloc_log_agf(tp, agbp, XFS_AGF_FLLAST | XFS_AGF_FLCOUNT);
         xfs_trans_log_buf(tp, agflbp,
@@ -2442,31 +2454,26 @@ xfs_free_extent(
         xfs_fsblock_t   bno,    /* starting block number of extent */
         xfs_extlen_t    len)    /* length of extent */
 {
-#ifdef DEBUG
-        xfs_agf_t       *agf;   /* a.g. freespace header */
-#endif
-        xfs_alloc_arg_t args;   /* allocation argument structure */
+        xfs_alloc_arg_t args;
         int             error;
 
         ASSERT(len != 0);
+        memset(&args, 0, sizeof(xfs_alloc_arg_t));
         args.tp = tp;
         args.mp = tp->t_mountp;
         args.agno = XFS_FSB_TO_AGNO(args.mp, bno);
         ASSERT(args.agno < args.mp->m_sb.sb_agcount);
         args.agbno = XFS_FSB_TO_AGBNO(args.mp, bno);
-        args.alignment = 1;
-        args.minlen = args.minleft = args.minalignslop = 0;
         down_read(&args.mp->m_peraglock);
         args.pag = &args.mp->m_perag[args.agno];
         if ((error = xfs_alloc_fix_freelist(&args, XFS_ALLOC_FLAG_FREEING)))
                 goto error0;
 #ifdef DEBUG
         ASSERT(args.agbp != NULL);
-        agf = XFS_BUF_TO_AGF(args.agbp);
-        ASSERT(args.agbno + len <= be32_to_cpu(agf->agf_length));
+        ASSERT((args.agbno + len) <=
+                be32_to_cpu(XFS_BUF_TO_AGF(args.agbp)->agf_length));
 #endif
-        error = xfs_free_ag_extent(tp, args.agbp, args.agno, args.agbno,
-                len, 0);
+        error = xfs_free_ag_extent(tp, args.agbp, args.agno, args.agbno, len, 0);
 error0:
         up_read(&args.mp->m_peraglock);
         return error;