Merge branch 'xfs-misc-fixes-3.17-2' into for-next
[linux-2.6-block.git] / fs / xfs / xfs_qm.c
index 6d26759c779aa42b01c22f868ec55effde134b4b..10232102b4a6ffac8a8a92f627ba0cb0caea64ab 100644 (file)
@@ -98,18 +98,18 @@ restart:
                        next_index = be32_to_cpu(dqp->q_core.d_id) + 1;
 
                        error = execute(batch[i], data);
-                       if (error == EAGAIN) {
+                       if (error == -EAGAIN) {
                                skipped++;
                                continue;
                        }
-                       if (error && last_error != EFSCORRUPTED)
+                       if (error && last_error != -EFSCORRUPTED)
                                last_error = error;
                }
 
                mutex_unlock(&qi->qi_tree_lock);
 
                /* bail out if the filesystem is corrupted.  */
-               if (last_error == EFSCORRUPTED) {
+               if (last_error == -EFSCORRUPTED) {
                        skipped = 0;
                        break;
                }
@@ -138,7 +138,7 @@ xfs_qm_dqpurge(
        xfs_dqlock(dqp);
        if ((dqp->dq_flags & XFS_DQ_FREEING) || dqp->q_nrefs != 0) {
                xfs_dqunlock(dqp);
-               return EAGAIN;
+               return -EAGAIN;
        }
 
        dqp->dq_flags |= XFS_DQ_FREEING;
@@ -221,100 +221,6 @@ xfs_qm_unmount(
        }
 }
 
-
-/*
- * This is called from xfs_mountfs to start quotas and initialize all
- * necessary data structures like quotainfo.  This is also responsible for
- * running a quotacheck as necessary.  We are guaranteed that the superblock
- * is consistently read in at this point.
- *
- * If we fail here, the mount will continue with quota turned off. We don't
- * need to inidicate success or failure at all.
- */
-void
-xfs_qm_mount_quotas(
-       xfs_mount_t     *mp)
-{
-       int             error = 0;
-       uint            sbf;
-
-       /*
-        * If quotas on realtime volumes is not supported, we disable
-        * quotas immediately.
-        */
-       if (mp->m_sb.sb_rextents) {
-               xfs_notice(mp, "Cannot turn on quotas for realtime filesystem");
-               mp->m_qflags = 0;
-               goto write_changes;
-       }
-
-       ASSERT(XFS_IS_QUOTA_RUNNING(mp));
-
-       /*
-        * Allocate the quotainfo structure inside the mount struct, and
-        * create quotainode(s), and change/rev superblock if necessary.
-        */
-       error = xfs_qm_init_quotainfo(mp);
-       if (error) {
-               /*
-                * We must turn off quotas.
-                */
-               ASSERT(mp->m_quotainfo == NULL);
-               mp->m_qflags = 0;
-               goto write_changes;
-       }
-       /*
-        * If any of the quotas are not consistent, do a quotacheck.
-        */
-       if (XFS_QM_NEED_QUOTACHECK(mp)) {
-               error = xfs_qm_quotacheck(mp);
-               if (error) {
-                       /* Quotacheck failed and disabled quotas. */
-                       return;
-               }
-       }
-       /* 
-        * If one type of quotas is off, then it will lose its
-        * quotachecked status, since we won't be doing accounting for
-        * that type anymore.
-        */
-       if (!XFS_IS_UQUOTA_ON(mp))
-               mp->m_qflags &= ~XFS_UQUOTA_CHKD;
-       if (!XFS_IS_GQUOTA_ON(mp))
-               mp->m_qflags &= ~XFS_GQUOTA_CHKD;
-       if (!XFS_IS_PQUOTA_ON(mp))
-               mp->m_qflags &= ~XFS_PQUOTA_CHKD;
-
- write_changes:
-       /*
-        * We actually don't have to acquire the m_sb_lock at all.
-        * This can only be called from mount, and that's single threaded. XXX
-        */
-       spin_lock(&mp->m_sb_lock);
-       sbf = mp->m_sb.sb_qflags;
-       mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL;
-       spin_unlock(&mp->m_sb_lock);
-
-       if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) {
-               if (xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS)) {
-                       /*
-                        * We could only have been turning quotas off.
-                        * We aren't in very good shape actually because
-                        * the incore structures are convinced that quotas are
-                        * off, but the on disk superblock doesn't know that !
-                        */
-                       ASSERT(!(XFS_IS_QUOTA_RUNNING(mp)));
-                       xfs_alert(mp, "%s: Superblock update failed!",
-                               __func__);
-               }
-       }
-
-       if (error) {
-               xfs_warn(mp, "Failed to initialize disk quotas.");
-               return;
-       }
-}
-
 /*
  * Called from the vfsops layer.
  */
@@ -671,7 +577,7 @@ xfs_qm_init_quotainfo(
 
        qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP);
 
-       error = -list_lru_init(&qinf->qi_lru);
+       error = list_lru_init(&qinf->qi_lru);
        if (error)
                goto out_free_qinf;
 
@@ -995,7 +901,7 @@ xfs_qm_dqiter_bufs(
                 * will leave a trace in the log indicating corruption has
                 * been detected.
                 */
-               if (error == EFSCORRUPTED) {
+               if (error == -EFSCORRUPTED) {
                        error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp,
                                      XFS_FSB_TO_DADDR(mp, bno),
                                      mp->m_quotainfo->qi_dqchunklen, 0, &bp,
@@ -1005,6 +911,12 @@ xfs_qm_dqiter_bufs(
                if (error)
                        break;
 
+               /*
+                * A corrupt buffer might not have a verifier attached, so
+                * make sure we have the correct one attached before writeback
+                * occurs.
+                */
+               bp->b_ops = &xfs_dquot_buf_ops;
                xfs_qm_reset_dqcounts(mp, bp, firstid, type);
                xfs_buf_delwri_queue(bp, buffer_list);
                xfs_buf_relse(bp);
@@ -1090,7 +1002,7 @@ xfs_qm_dqiterate(
                                        xfs_buf_readahead(mp->m_ddev_targp,
                                               XFS_FSB_TO_DADDR(mp, rablkno),
                                               mp->m_quotainfo->qi_dqchunklen,
-                                              NULL);
+                                              &xfs_dquot_buf_ops);
                                        rablkno++;
                                }
                        }
@@ -1138,8 +1050,8 @@ xfs_qm_quotacheck_dqadjust(
                /*
                 * Shouldn't be able to turn off quotas here.
                 */
-               ASSERT(error != ESRCH);
-               ASSERT(error != ENOENT);
+               ASSERT(error != -ESRCH);
+               ASSERT(error != -ENOENT);
                return error;
        }
 
@@ -1226,7 +1138,7 @@ xfs_qm_dqusage_adjust(
         */
        if (xfs_is_quota_inode(&mp->m_sb, ino)) {
                *res = BULKSTAT_RV_NOTHING;
-               return XFS_ERROR(EINVAL);
+               return -EINVAL;
        }
 
        /*
@@ -1330,7 +1242,7 @@ out_unlock:
  * Walk thru all the filesystem inodes and construct a consistent view
  * of the disk quota world. If the quotacheck fails, disable quotas.
  */
-int
+STATIC int
 xfs_qm_quotacheck(
        xfs_mount_t     *mp)
 {
@@ -1463,7 +1375,100 @@ xfs_qm_quotacheck(
                }
        } else
                xfs_notice(mp, "Quotacheck: Done.");
-       return (error);
+       return error;
+}
+
+/*
+ * This is called from xfs_mountfs to start quotas and initialize all
+ * necessary data structures like quotainfo.  This is also responsible for
+ * running a quotacheck as necessary.  We are guaranteed that the superblock
+ * is consistently read in at this point.
+ *
+ * If we fail here, the mount will continue with quota turned off. We don't
+ * need to inidicate success or failure at all.
+ */
+void
+xfs_qm_mount_quotas(
+       struct xfs_mount        *mp)
+{
+       int                     error = 0;
+       uint                    sbf;
+
+       /*
+        * If quotas on realtime volumes is not supported, we disable
+        * quotas immediately.
+        */
+       if (mp->m_sb.sb_rextents) {
+               xfs_notice(mp, "Cannot turn on quotas for realtime filesystem");
+               mp->m_qflags = 0;
+               goto write_changes;
+       }
+
+       ASSERT(XFS_IS_QUOTA_RUNNING(mp));
+
+       /*
+        * Allocate the quotainfo structure inside the mount struct, and
+        * create quotainode(s), and change/rev superblock if necessary.
+        */
+       error = xfs_qm_init_quotainfo(mp);
+       if (error) {
+               /*
+                * We must turn off quotas.
+                */
+               ASSERT(mp->m_quotainfo == NULL);
+               mp->m_qflags = 0;
+               goto write_changes;
+       }
+       /*
+        * If any of the quotas are not consistent, do a quotacheck.
+        */
+       if (XFS_QM_NEED_QUOTACHECK(mp)) {
+               error = xfs_qm_quotacheck(mp);
+               if (error) {
+                       /* Quotacheck failed and disabled quotas. */
+                       return;
+               }
+       }
+       /*
+        * If one type of quotas is off, then it will lose its
+        * quotachecked status, since we won't be doing accounting for
+        * that type anymore.
+        */
+       if (!XFS_IS_UQUOTA_ON(mp))
+               mp->m_qflags &= ~XFS_UQUOTA_CHKD;
+       if (!XFS_IS_GQUOTA_ON(mp))
+               mp->m_qflags &= ~XFS_GQUOTA_CHKD;
+       if (!XFS_IS_PQUOTA_ON(mp))
+               mp->m_qflags &= ~XFS_PQUOTA_CHKD;
+
+ write_changes:
+       /*
+        * We actually don't have to acquire the m_sb_lock at all.
+        * This can only be called from mount, and that's single threaded. XXX
+        */
+       spin_lock(&mp->m_sb_lock);
+       sbf = mp->m_sb.sb_qflags;
+       mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL;
+       spin_unlock(&mp->m_sb_lock);
+
+       if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) {
+               if (xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS)) {
+                       /*
+                        * We could only have been turning quotas off.
+                        * We aren't in very good shape actually because
+                        * the incore structures are convinced that quotas are
+                        * off, but the on disk superblock doesn't know that !
+                        */
+                       ASSERT(!(XFS_IS_QUOTA_RUNNING(mp)));
+                       xfs_alert(mp, "%s: Superblock update failed!",
+                               __func__);
+               }
+       }
+
+       if (error) {
+               xfs_warn(mp, "Failed to initialize disk quotas.");
+               return;
+       }
 }
 
 /*
@@ -1493,7 +1498,7 @@ xfs_qm_init_quotainos(
                        error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
                                             0, 0, &uip);
                        if (error)
-                               return XFS_ERROR(error);
+                               return error;
                }
                if (XFS_IS_GQUOTA_ON(mp) &&
                    mp->m_sb.sb_gquotino != NULLFSINO) {
@@ -1563,7 +1568,7 @@ error_rele:
                IRELE(gip);
        if (pip)
                IRELE(pip);
-       return XFS_ERROR(error);
+       return error;
 }
 
 STATIC void
@@ -1679,7 +1684,7 @@ xfs_qm_vop_dqalloc(
                                                 XFS_QMOPT_DOWARN,
                                                 &uq);
                        if (error) {
-                               ASSERT(error != ENOENT);
+                               ASSERT(error != -ENOENT);
                                return error;
                        }
                        /*
@@ -1706,7 +1711,7 @@ xfs_qm_vop_dqalloc(
                                                 XFS_QMOPT_DOWARN,
                                                 &gq);
                        if (error) {
-                               ASSERT(error != ENOENT);
+                               ASSERT(error != -ENOENT);
                                goto error_rele;
                        }
                        xfs_dqunlock(gq);
@@ -1726,7 +1731,7 @@ xfs_qm_vop_dqalloc(
                                                 XFS_QMOPT_DOWARN,
                                                 &pq);
                        if (error) {
-                               ASSERT(error != ENOENT);
+                               ASSERT(error != -ENOENT);
                                goto error_rele;
                        }
                        xfs_dqunlock(pq);
@@ -1895,7 +1900,7 @@ xfs_qm_vop_chown_reserve(
                                -((xfs_qcnt_t)delblks), 0, blkflags);
        }
 
-       return (0);
+       return 0;
 }
 
 int