Merge remote-tracking branch 'linus/master' into testing

1 files changed, 53 insertions, 21 deletions

diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c
index c8f5ae1debf2..7a0c17d7ec09 100644
--- a/fs/xfs/xfs_ialloc.c
+++ b/fs/xfs/xfs_ialloc.c
@@ -38,6 +38,7 @@
 #include "xfs_bmap.h"
 #include "xfs_cksum.h"
 #include "xfs_buf_item.h"
+#include "xfs_icreate_item.h"
 
 
 /*
@@ -150,12 +151,16 @@ xfs_check_agi_freecount(
 #endif
 
 /*
- * Initialise a new set of inodes.
+ * Initialise a new set of inodes. When called without a transaction context
+ * (e.g. from recovery) we initiate a delayed write of the inode buffers rather
+ * than logging them (which in a transaction context puts them into the AIL
+ * for writeback rather than the xfsbufd queue).
  */
-STATIC int
+int
 xfs_ialloc_inode_init(
         struct xfs_mount        *mp,
         struct xfs_trans        *tp,
+        struct list_head        *buffer_list,
         xfs_agnumber_t          agno,
         xfs_agblock_t           agbno,
         xfs_agblock_t           length,
@@ -208,6 +213,18 @@ xfs_ialloc_inode_init(
                 version = 3;
                 ino = XFS_AGINO_TO_INO(mp, agno,
                                        XFS_OFFBNO_TO_AGINO(mp, agbno, 0));
+
+                /*
+                 * log the initialisation that is about to take place as an
+                 * logical operation. This means the transaction does not
+                 * need to log the physical changes to the inode buffers as log
+                 * recovery will know what initialisation is actually needed.
+                 * Hence we only need to log the buffers as "ordered" buffers so
+                 * they track in the AIL as if they were physically logged.
+                 */
+                if (tp)
+                        xfs_icreate_log(tp, agno, agbno, XFS_IALLOC_INODES(mp),
+                                        mp->m_sb.sb_inodesize, length, gen);
         } else if (xfs_sb_version_hasnlink(&mp->m_sb))
                 version = 2;
         else
@@ -223,13 +240,8 @@ xfs_ialloc_inode_init(
                                          XBF_UNMAPPED);
                 if (!fbuf)
                         return ENOMEM;
-                /*
-                 * Initialize all inodes in this buffer and then log them.
-                 *
-                 * XXX: It would be much better if we had just one transaction
-                 *      to log a whole cluster of inodes instead of all the
-                 *      individual transactions causing a lot of log traffic.
-                 */
+
+                /* Initialize the inode buffers and log them appropriately. */
                 fbuf->b_ops = &xfs_inode_buf_ops;
                 xfs_buf_zero(fbuf, 0, BBTOB(fbuf->b_length));
                 for (i = 0; i < ninodes; i++) {
@@ -247,18 +259,39 @@ xfs_ialloc_inode_init(
                                 ino++;
                                 uuid_copy(&free->di_uuid, &mp->m_sb.sb_uuid);
                                 xfs_dinode_calc_crc(mp, free);
-                        } else {
+                        } else if (tp) {
                                 /* just log the inode core */
                                 xfs_trans_log_buf(tp, fbuf, ioffset,
                                                   ioffset + isize - 1);
                         }
                 }
-                if (version == 3) {
-                        /* need to log the entire buffer */
-                        xfs_trans_log_buf(tp, fbuf, 0,
-                                          BBTOB(fbuf->b_length) - 1);
+
+                if (tp) {
+                        /*
+                         * Mark the buffer as an inode allocation buffer so it
+                         * sticks in AIL at the point of this allocation
+                         * transaction. This ensures the they are on disk before
+                         * the tail of the log can be moved past this
+                         * transaction (i.e. by preventing relogging from moving
+                         * it forward in the log).
+                         */
+                        xfs_trans_inode_alloc_buf(tp, fbuf);
+                        if (version == 3) {
+                                /*
+                                 * Mark the buffer as ordered so that they are
+                                 * not physically logged in the transaction but
+                                 * still tracked in the AIL as part of the
+                                 * transaction and pin the log appropriately.
+                                 */
+                                xfs_trans_ordered_buf(tp, fbuf);
+                                xfs_trans_log_buf(tp, fbuf, 0,
+                                                  BBTOB(fbuf->b_length) - 1);
+                        }
+                } else {
+                        fbuf->b_flags |= XBF_DONE;
+                        xfs_buf_delwri_queue(fbuf, buffer_list);
+                        xfs_buf_relse(fbuf);
                 }
-                xfs_trans_inode_alloc_buf(tp, fbuf);
         }
         return 0;
 }
@@ -303,7 +336,7 @@ xfs_ialloc_ag_alloc(
          * First try to allocate inodes contiguous with the last-allocated
          * chunk of inodes.  If the filesystem is striped, this will fill
          * an entire stripe unit with inodes.
-         */
+         */
         agi = XFS_BUF_TO_AGI(agbp);
         newino = be32_to_cpu(agi->agi_newino);
         agno = be32_to_cpu(agi->agi_seqno);
@@ -402,7 +435,7 @@ xfs_ialloc_ag_alloc(
          * rather than a linear progression to prevent the next generation
          * number from being easily guessable.
          */
-        error = xfs_ialloc_inode_init(args.mp, tp, agno, args.agbno,
+        error = xfs_ialloc_inode_init(args.mp, tp, NULL, agno, args.agbno,
                         args.len, prandom_u32());
 
         if (error)
@@ -615,8 +648,7 @@ xfs_ialloc_get_rec(
         struct xfs_btree_cur    *cur,
         xfs_agino_t             agino,
         xfs_inobt_rec_incore_t  *rec,
-        int                     *done,
-        int                     left)
+        int                     *done)
 {
         int                     error;
         int                     i;
@@ -724,12 +756,12 @@ xfs_dialloc_ag(
                     pag->pagl_leftrec != NULLAGINO &&
                     pag->pagl_rightrec != NULLAGINO) {
                         error = xfs_ialloc_get_rec(tcur, pag->pagl_leftrec,
-                                                   &trec, &doneleft, 1);
+                                                   &trec, &doneleft);
                         if (error)
                                 goto error1;
 
                         error = xfs_ialloc_get_rec(cur, pag->pagl_rightrec,
-                                                   &rec, &doneright, 0);
+                                                   &rec, &doneright);
                         if (error)
                                 goto error1;
                 } else {