Merge branch 'xfs-misc-fixes-for-4.2-3' into for-next
[cascardo/linux.git] / fs / xfs / xfs_inode.c
index 7b97707..3da9f4d 100644 (file)
@@ -905,7 +905,6 @@ xfs_dir_ialloc(
 
 {
        xfs_trans_t     *tp;
-       xfs_trans_t     *ntp;
        xfs_inode_t     *ip;
        xfs_buf_t       *ialloc_context = NULL;
        int             code;
@@ -954,8 +953,6 @@ xfs_dir_ialloc(
         * to succeed the second time.
         */
        if (ialloc_context) {
-               struct xfs_trans_res tres;
-
                /*
                 * Normally, xfs_trans_commit releases all the locks.
                 * We call bhold to hang on to the ialloc_context across
@@ -964,12 +961,6 @@ xfs_dir_ialloc(
                 * allocation group.
                 */
                xfs_trans_bhold(tp, ialloc_context);
-               /*
-                * Save the log reservation so we can use
-                * them in the next transaction.
-                */
-               tres.tr_logres = xfs_trans_get_log_res(tp);
-               tres.tr_logcount = xfs_trans_get_log_count(tp);
 
                /*
                 * We want the quota changes to be associated with the next
@@ -985,35 +976,9 @@ xfs_dir_ialloc(
                        tp->t_flags &= ~(XFS_TRANS_DQ_DIRTY);
                }
 
-               ntp = xfs_trans_dup(tp);
-               code = xfs_trans_commit(tp, 0);
-               tp = ntp;
-               if (committed != NULL) {
+               code = xfs_trans_roll(&tp, 0);
+               if (committed != NULL)
                        *committed = 1;
-               }
-               /*
-                * If we get an error during the commit processing,
-                * release the buffer that is still held and return
-                * to the caller.
-                */
-               if (code) {
-                       xfs_buf_relse(ialloc_context);
-                       if (dqinfo) {
-                               tp->t_dqinfo = dqinfo;
-                               xfs_trans_free_dqinfo(tp);
-                       }
-                       *tpp = ntp;
-                       *ipp = NULL;
-                       return code;
-               }
-
-               /*
-                * transaction commit worked ok so we can drop the extra ticket
-                * reference that we gained in xfs_trans_dup()
-                */
-               xfs_log_ticket_put(tp->t_ticket);
-               tres.tr_logflags = XFS_TRANS_PERM_LOG_RES;
-               code = xfs_trans_reserve(tp, &tres, 0, 0);
 
                /*
                 * Re-attach the quota info that we detached from prev trx.
@@ -1025,7 +990,7 @@ xfs_dir_ialloc(
 
                if (code) {
                        xfs_buf_relse(ialloc_context);
-                       *tpp = ntp;
+                       *tpp = tp;
                        *ipp = NULL;
                        return code;
                }
@@ -1127,7 +1092,6 @@ xfs_create(
        xfs_bmap_free_t         free_list;
        xfs_fsblock_t           first_block;
        bool                    unlock_dp_on_error = false;
-       uint                    cancel_flags;
        int                     committed;
        prid_t                  prid;
        struct xfs_dquot        *udqp = NULL;
@@ -1164,8 +1128,6 @@ xfs_create(
                tp = xfs_trans_alloc(mp, XFS_TRANS_CREATE);
        }
 
-       cancel_flags = XFS_TRANS_RELEASE_LOG_RES;
-
        /*
         * Initially assume that the file does not exist and
         * reserve the resources for that case.  If that is not
@@ -1183,10 +1145,9 @@ xfs_create(
                resblks = 0;
                error = xfs_trans_reserve(tp, tres, 0, 0);
        }
-       if (error) {
-               cancel_flags = 0;
+       if (error)
                goto out_trans_cancel;
-       }
+
 
        xfs_ilock(dp, XFS_ILOCK_EXCL | XFS_ILOCK_PARENT);
        unlock_dp_on_error = true;
@@ -1217,7 +1178,7 @@ xfs_create(
        if (error) {
                if (error == -ENOSPC)
                        goto out_trans_cancel;
-               goto out_trans_abort;
+               goto out_trans_cancel;
        }
 
        /*
@@ -1235,7 +1196,7 @@ xfs_create(
                                        resblks - XFS_IALLOC_SPACE_RES(mp) : 0);
        if (error) {
                ASSERT(error != -ENOSPC);
-               goto out_trans_abort;
+               goto out_trans_cancel;
        }
        xfs_trans_ichgtime(tp, dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
        xfs_trans_log_inode(tp, dp, XFS_ILOG_CORE);
@@ -1269,7 +1230,7 @@ xfs_create(
        if (error)
                goto out_bmap_cancel;
 
-       error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
+       error = xfs_trans_commit(tp);
        if (error)
                goto out_release_inode;
 
@@ -1282,10 +1243,8 @@ xfs_create(
 
  out_bmap_cancel:
        xfs_bmap_cancel(&free_list);
- out_trans_abort:
-       cancel_flags |= XFS_TRANS_ABORT;
  out_trans_cancel:
-       xfs_trans_cancel(tp, cancel_flags);
+       xfs_trans_cancel(tp);
  out_release_inode:
        /*
         * Wait until after the current transaction is aborted to finish the
@@ -1317,7 +1276,6 @@ xfs_create_tmpfile(
        struct xfs_inode        *ip = NULL;
        struct xfs_trans        *tp = NULL;
        int                     error;
-       uint                    cancel_flags = XFS_TRANS_RELEASE_LOG_RES;
        prid_t                  prid;
        struct xfs_dquot        *udqp = NULL;
        struct xfs_dquot        *gdqp = NULL;
@@ -1350,10 +1308,8 @@ xfs_create_tmpfile(
                resblks = 0;
                error = xfs_trans_reserve(tp, tres, 0, 0);
        }
-       if (error) {
-               cancel_flags = 0;
+       if (error)
                goto out_trans_cancel;
-       }
 
        error = xfs_trans_reserve_quota(tp, mp, udqp, gdqp,
                                                pdqp, resblks, 1, 0);
@@ -1365,7 +1321,7 @@ xfs_create_tmpfile(
        if (error) {
                if (error == -ENOSPC)
                        goto out_trans_cancel;
-               goto out_trans_abort;
+               goto out_trans_cancel;
        }
 
        if (mp->m_flags & XFS_MOUNT_WSYNC)
@@ -1381,9 +1337,9 @@ xfs_create_tmpfile(
        ip->i_d.di_nlink--;
        error = xfs_iunlink(tp, ip);
        if (error)
-               goto out_trans_abort;
+               goto out_trans_cancel;
 
-       error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
+       error = xfs_trans_commit(tp);
        if (error)
                goto out_release_inode;
 
@@ -1394,10 +1350,8 @@ xfs_create_tmpfile(
        *ipp = ip;
        return 0;
 
- out_trans_abort:
-       cancel_flags |= XFS_TRANS_ABORT;
  out_trans_cancel:
-       xfs_trans_cancel(tp, cancel_flags);
+       xfs_trans_cancel(tp);
  out_release_inode:
        /*
         * Wait until after the current transaction is aborted to finish the
@@ -1427,7 +1381,6 @@ xfs_link(
        int                     error;
        xfs_bmap_free_t         free_list;
        xfs_fsblock_t           first_block;
-       int                     cancel_flags;
        int                     committed;
        int                     resblks;
 
@@ -1447,17 +1400,14 @@ xfs_link(
                goto std_return;
 
        tp = xfs_trans_alloc(mp, XFS_TRANS_LINK);
-       cancel_flags = XFS_TRANS_RELEASE_LOG_RES;
        resblks = XFS_LINK_SPACE_RES(mp, target_name->len);
        error = xfs_trans_reserve(tp, &M_RES(mp)->tr_link, resblks, 0);
        if (error == -ENOSPC) {
                resblks = 0;
                error = xfs_trans_reserve(tp, &M_RES(mp)->tr_link, 0, 0);
        }
-       if (error) {
-               cancel_flags = 0;
+       if (error)
                goto error_return;
-       }
 
        xfs_lock_two_inodes(sip, tdp, XFS_ILOCK_EXCL);
 
@@ -1486,19 +1436,19 @@ xfs_link(
        if (sip->i_d.di_nlink == 0) {
                error = xfs_iunlink_remove(tp, sip);
                if (error)
-                       goto abort_return;
+                       goto error_return;
        }
 
        error = xfs_dir_createname(tp, tdp, target_name, sip->i_ino,
                                        &first_block, &free_list, resblks);
        if (error)
-               goto abort_return;
+               goto error_return;
        xfs_trans_ichgtime(tp, tdp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
        xfs_trans_log_inode(tp, tdp, XFS_ILOG_CORE);
 
        error = xfs_bumplink(tp, sip);
        if (error)
-               goto abort_return;
+               goto error_return;
 
        /*
         * If this is a synchronous mount, make sure that the
@@ -1512,15 +1462,13 @@ xfs_link(
        error = xfs_bmap_finish (&tp, &free_list, &committed);
        if (error) {
                xfs_bmap_cancel(&free_list);
-               goto abort_return;
+               goto error_return;
        }
 
-       return xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
+       return xfs_trans_commit(tp);
 
- abort_return:
-       cancel_flags |= XFS_TRANS_ABORT;
  error_return:
-       xfs_trans_cancel(tp, cancel_flags);
+       xfs_trans_cancel(tp);
  std_return:
        return error;
 }
@@ -1555,7 +1503,6 @@ xfs_itruncate_extents(
 {
        struct xfs_mount        *mp = ip->i_mount;
        struct xfs_trans        *tp = *tpp;
-       struct xfs_trans        *ntp;
        xfs_bmap_free_t         free_list;
        xfs_fsblock_t           first_block;
        xfs_fileoff_t           first_unmap_block;
@@ -1613,29 +1560,7 @@ xfs_itruncate_extents(
                if (error)
                        goto out_bmap_cancel;
 
-               if (committed) {
-                       /*
-                        * Mark the inode dirty so it will be logged and
-                        * moved forward in the log as part of every commit.
-                        */
-                       xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
-               }
-
-               ntp = xfs_trans_dup(tp);
-               error = xfs_trans_commit(tp, 0);
-               tp = ntp;
-
-               xfs_trans_ijoin(tp, ip, 0);
-
-               if (error)
-                       goto out;
-
-               /*
-                * Transaction commit worked ok so we can drop the extra ticket
-                * reference that we gained in xfs_trans_dup()
-                */
-               xfs_log_ticket_put(tp->t_ticket);
-               error = xfs_trans_reserve(tp, &M_RES(mp)->tr_itruncate, 0, 0);
+               error = xfs_trans_roll(&tp, ip);
                if (error)
                        goto out;
        }
@@ -1756,7 +1681,7 @@ xfs_inactive_truncate(
        error = xfs_trans_reserve(tp, &M_RES(mp)->tr_itruncate, 0, 0);
        if (error) {
                ASSERT(XFS_FORCED_SHUTDOWN(mp));
-               xfs_trans_cancel(tp, 0);
+               xfs_trans_cancel(tp);
                return error;
        }
 
@@ -1777,7 +1702,7 @@ xfs_inactive_truncate(
 
        ASSERT(ip->i_d.di_nextents == 0);
 
-       error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
+       error = xfs_trans_commit(tp);
        if (error)
                goto error_unlock;
 
@@ -1785,7 +1710,7 @@ xfs_inactive_truncate(
        return 0;
 
 error_trans_cancel:
-       xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | XFS_TRANS_ABORT);
+       xfs_trans_cancel(tp);
 error_unlock:
        xfs_iunlock(ip, XFS_ILOCK_EXCL);
        return error;
@@ -1835,7 +1760,7 @@ xfs_inactive_ifree(
                } else {
                        ASSERT(XFS_FORCED_SHUTDOWN(mp));
                }
-               xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES);
+               xfs_trans_cancel(tp);
                return error;
        }
 
@@ -1855,7 +1780,7 @@ xfs_inactive_ifree(
                                __func__, error);
                        xfs_force_shutdown(mp, SHUTDOWN_META_IO_ERROR);
                }
-               xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES|XFS_TRANS_ABORT);
+               xfs_trans_cancel(tp);
                xfs_iunlock(ip, XFS_ILOCK_EXCL);
                return error;
        }
@@ -1874,7 +1799,7 @@ xfs_inactive_ifree(
        if (error)
                xfs_notice(mp, "%s: xfs_bmap_finish returned error %d",
                        __func__, error);
-       error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
+       error = xfs_trans_commit(tp);
        if (error)
                xfs_notice(mp, "%s: xfs_trans_commit returned error %d",
                        __func__, error);
@@ -2235,28 +2160,42 @@ xfs_iunlink_remove(
  */
 STATIC int
 xfs_ifree_cluster(
-       xfs_inode_t     *free_ip,
-       xfs_trans_t     *tp,
-       xfs_ino_t       inum)
+       xfs_inode_t             *free_ip,
+       xfs_trans_t             *tp,
+       struct xfs_icluster     *xic)
 {
        xfs_mount_t             *mp = free_ip->i_mount;
        int                     blks_per_cluster;
        int                     inodes_per_cluster;
        int                     nbufs;
        int                     i, j;
+       int                     ioffset;
        xfs_daddr_t             blkno;
        xfs_buf_t               *bp;
        xfs_inode_t             *ip;
        xfs_inode_log_item_t    *iip;
        xfs_log_item_t          *lip;
        struct xfs_perag        *pag;
+       xfs_ino_t               inum;
 
+       inum = xic->first_ino;
        pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, inum));
        blks_per_cluster = xfs_icluster_size_fsb(mp);
        inodes_per_cluster = blks_per_cluster << mp->m_sb.sb_inopblog;
        nbufs = mp->m_ialloc_blks / blks_per_cluster;
 
        for (j = 0; j < nbufs; j++, inum += inodes_per_cluster) {
+               /*
+                * The allocation bitmap tells us which inodes of the chunk were
+                * physically allocated. Skip the cluster if an inode falls into
+                * a sparse region.
+                */
+               ioffset = inum - xic->first_ino;
+               if ((xic->alloc & XFS_INOBT_MASK(ioffset)) == 0) {
+                       ASSERT(do_mod(ioffset, inodes_per_cluster) == 0);
+                       continue;
+               }
+
                blkno = XFS_AGB_TO_DADDR(mp, XFS_INO_TO_AGNO(mp, inum),
                                         XFS_INO_TO_AGBNO(mp, inum));
 
@@ -2414,8 +2353,7 @@ xfs_ifree(
        xfs_bmap_free_t *flist)
 {
        int                     error;
-       int                     delete;
-       xfs_ino_t               first_ino;
+       struct xfs_icluster     xic = { 0 };
 
        ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
        ASSERT(ip->i_d.di_nlink == 0);
@@ -2431,7 +2369,7 @@ xfs_ifree(
        if (error)
                return error;
 
-       error = xfs_difree(tp, ip->i_ino, flist, &delete, &first_ino);
+       error = xfs_difree(tp, ip->i_ino, flist, &xic);
        if (error)
                return error;
 
@@ -2448,8 +2386,8 @@ xfs_ifree(
        ip->i_d.di_gen++;
        xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
 
-       if (delete)
-               error = xfs_ifree_cluster(ip, tp, first_ino);
+       if (xic.deleted)
+               error = xfs_ifree_cluster(ip, tp, &xic);
 
        return error;
 }
@@ -2536,7 +2474,6 @@ xfs_remove(
        int                     error = 0;
        xfs_bmap_free_t         free_list;
        xfs_fsblock_t           first_block;
-       int                     cancel_flags;
        int                     committed;
        uint                    resblks;
 
@@ -2557,7 +2494,6 @@ xfs_remove(
                tp = xfs_trans_alloc(mp, XFS_TRANS_RMDIR);
        else
                tp = xfs_trans_alloc(mp, XFS_TRANS_REMOVE);
-       cancel_flags = XFS_TRANS_RELEASE_LOG_RES;
 
        /*
         * We try to get the real space reservation first,
@@ -2576,7 +2512,6 @@ xfs_remove(
        }
        if (error) {
                ASSERT(error != -ENOSPC);
-               cancel_flags = 0;
                goto out_trans_cancel;
        }
 
@@ -2588,7 +2523,6 @@ xfs_remove(
        /*
         * If we're removing a directory perform some additional validation.
         */
-       cancel_flags |= XFS_TRANS_ABORT;
        if (is_dir) {
                ASSERT(ip->i_d.di_nlink >= 2);
                if (ip->i_d.di_nlink != 2) {
@@ -2644,7 +2578,7 @@ xfs_remove(
        if (error)
                goto out_bmap_cancel;
 
-       error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
+       error = xfs_trans_commit(tp);
        if (error)
                goto std_return;
 
@@ -2656,7 +2590,7 @@ xfs_remove(
  out_bmap_cancel:
        xfs_bmap_cancel(&free_list);
  out_trans_cancel:
-       xfs_trans_cancel(tp, cancel_flags);
+       xfs_trans_cancel(tp);
  std_return:
        return error;
 }
@@ -2730,11 +2664,11 @@ xfs_finish_rename(
        error = xfs_bmap_finish(&tp, free_list, &committed);
        if (error) {
                xfs_bmap_cancel(free_list);
-               xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES|XFS_TRANS_ABORT);
+               xfs_trans_cancel(tp);
                return error;
        }
 
-       return xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
+       return xfs_trans_commit(tp);
 }
 
 /*
@@ -2855,7 +2789,7 @@ xfs_cross_rename(
 
 out_trans_abort:
        xfs_bmap_cancel(free_list);
-       xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES|XFS_TRANS_ABORT);
+       xfs_trans_cancel(tp);
        return error;
 }
 
@@ -2915,7 +2849,6 @@ xfs_rename(
        int                     num_inodes = __XFS_SORT_INODES;
        bool                    new_parent = (src_dp != target_dp);
        bool                    src_is_directory = S_ISDIR(src_ip->i_d.di_mode);
-       int                     cancel_flags = 0;
        int                     spaceres;
        int                     error;
 
@@ -2951,7 +2884,6 @@ xfs_rename(
        }
        if (error)
                goto out_trans_cancel;
-       cancel_flags = XFS_TRANS_RELEASE_LOG_RES;
 
        /*
         * Attach the dquots to the inodes
@@ -3022,10 +2954,8 @@ xfs_rename(
                error = xfs_dir_createname(tp, target_dp, target_name,
                                                src_ip->i_ino, &first_block,
                                                &free_list, spaceres);
-               if (error == -ENOSPC)
-                       goto out_bmap_cancel;
                if (error)
-                       goto out_trans_abort;
+                       goto out_bmap_cancel;
 
                xfs_trans_ichgtime(tp, target_dp,
                                        XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
@@ -3033,7 +2963,7 @@ xfs_rename(
                if (new_parent && src_is_directory) {
                        error = xfs_bumplink(tp, target_dp);
                        if (error)
-                               goto out_trans_abort;
+                               goto out_bmap_cancel;
                }
        } else { /* target_ip != NULL */
                /*
@@ -3065,7 +2995,7 @@ xfs_rename(
                                        src_ip->i_ino,
                                        &first_block, &free_list, spaceres);
                if (error)
-                       goto out_trans_abort;
+                       goto out_bmap_cancel;
 
                xfs_trans_ichgtime(tp, target_dp,
                                        XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
@@ -3076,7 +3006,7 @@ xfs_rename(
                 */
                error = xfs_droplink(tp, target_ip);
                if (error)
-                       goto out_trans_abort;
+                       goto out_bmap_cancel;
 
                if (src_is_directory) {
                        /*
@@ -3084,7 +3014,7 @@ xfs_rename(
                         */
                        error = xfs_droplink(tp, target_ip);
                        if (error)
-                               goto out_trans_abort;
+                               goto out_bmap_cancel;
                }
        } /* target_ip != NULL */
 
@@ -3101,7 +3031,7 @@ xfs_rename(
                                        &first_block, &free_list, spaceres);
                ASSERT(error != -EEXIST);
                if (error)
-                       goto out_trans_abort;
+                       goto out_bmap_cancel;
        }
 
        /*
@@ -3127,7 +3057,7 @@ xfs_rename(
                 */
                error = xfs_droplink(tp, src_dp);
                if (error)
-                       goto out_trans_abort;
+                       goto out_bmap_cancel;
        }
 
        /*
@@ -3142,7 +3072,7 @@ xfs_rename(
                error = xfs_dir_removename(tp, src_dp, src_name, src_ip->i_ino,
                                           &first_block, &free_list, spaceres);
        if (error)
-               goto out_trans_abort;
+               goto out_bmap_cancel;
 
        /*
         * For whiteouts, we need to bump the link count on the whiteout inode.
@@ -3156,10 +3086,10 @@ xfs_rename(
                ASSERT(VFS_I(wip)->i_nlink == 0 && wip->i_d.di_nlink == 0);
                error = xfs_bumplink(tp, wip);
                if (error)
-                       goto out_trans_abort;
+                       goto out_bmap_cancel;
                error = xfs_iunlink_remove(tp, wip);
                if (error)
-                       goto out_trans_abort;
+                       goto out_bmap_cancel;
                xfs_trans_log_inode(tp, wip, XFS_ILOG_CORE);
 
                /*
@@ -3180,12 +3110,10 @@ xfs_rename(
                IRELE(wip);
        return error;
 
-out_trans_abort:
-       cancel_flags |= XFS_TRANS_ABORT;
 out_bmap_cancel:
        xfs_bmap_cancel(&free_list);
 out_trans_cancel:
-       xfs_trans_cancel(tp, cancel_flags);
+       xfs_trans_cancel(tp);
        if (wip)
                IRELE(wip);
        return error;