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authorChristoph Hellwig <hch@lst.de>2009-06-08 15:33:32 +0200
committerChristoph Hellwig <hch@brick.lst.de>2009-06-08 15:33:32 +0200
commit7d095257e321214e4cf359abd131ba1f09c60cba (patch)
tree3f71e2650651616f8ba168b64a82ab48aedef14c /fs/xfs/xfs_mount.c
parent0c5e1ce89f1eacc366ec421c0f5f681159479c28 (diff)
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xfs: kill xfs_qmops
Kill the quota ops function vector and replace it with direct calls or stubs in the CONFIG_XFS_QUOTA=n case. Make sure we check XFS_IS_QUOTA_RUNNING in the right spots. We can remove the number of those checks because the XFS_TRANS_DQ_DIRTY flag can't be set otherwise. This brings us back closer to the way this code worked in IRIX and earlier Linux versions, but we keep a lot of the more useful factoring of common code. Eventually we should also kill xfs_qm_bhv.c, but that's left for a later patch. Reduces the size of the source code by about 250 lines and the size of XFS module by about 1.5 kilobytes with quotas enabled: text data bss dec hex filename 615957 2960 3848 622765 980ad fs/xfs/xfs.o 617231 3152 3848 624231 98667 fs/xfs/xfs.o.old Fallout: - xfs_qm_dqattach is split into xfs_qm_dqattach_locked which expects the inode locked and xfs_qm_dqattach which does the locking around it, thus removing XFS_QMOPT_ILOCKED. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Eric Sandeen <sandeen@sandeen.net>
Diffstat (limited to 'fs/xfs/xfs_mount.c')
-rw-r--r--fs/xfs/xfs_mount.c103
1 files changed, 86 insertions, 17 deletions
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index 65a9972..b659db5 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -960,6 +960,53 @@ xfs_check_sizes(xfs_mount_t *mp)
}
/*
+ * Clear the quotaflags in memory and in the superblock.
+ */
+int
+xfs_mount_reset_sbqflags(
+ struct xfs_mount *mp)
+{
+ int error;
+ struct xfs_trans *tp;
+
+ mp->m_qflags = 0;
+
+ /*
+ * It is OK to look at sb_qflags here in mount path,
+ * without m_sb_lock.
+ */
+ if (mp->m_sb.sb_qflags == 0)
+ return 0;
+ spin_lock(&mp->m_sb_lock);
+ mp->m_sb.sb_qflags = 0;
+ spin_unlock(&mp->m_sb_lock);
+
+ /*
+ * If the fs is readonly, let the incore superblock run
+ * with quotas off but don't flush the update out to disk
+ */
+ if (mp->m_flags & XFS_MOUNT_RDONLY)
+ return 0;
+
+#ifdef QUOTADEBUG
+ xfs_fs_cmn_err(CE_NOTE, mp, "Writing superblock quota changes");
+#endif
+
+ tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE);
+ error = xfs_trans_reserve(tp, 0, mp->m_sb.sb_sectsize + 128, 0, 0,
+ XFS_DEFAULT_LOG_COUNT);
+ if (error) {
+ xfs_trans_cancel(tp, 0);
+ xfs_fs_cmn_err(CE_ALERT, mp,
+ "xfs_mount_reset_sbqflags: Superblock update failed!");
+ return error;
+ }
+
+ xfs_mod_sb(tp, XFS_SB_QFLAGS);
+ return xfs_trans_commit(tp, 0);
+}
+
+/*
* This function does the following on an initial mount of a file system:
* - reads the superblock from disk and init the mount struct
* - if we're a 32-bit kernel, do a size check on the superblock
@@ -976,7 +1023,8 @@ xfs_mountfs(
xfs_sb_t *sbp = &(mp->m_sb);
xfs_inode_t *rip;
__uint64_t resblks;
- uint quotamount, quotaflags;
+ uint quotamount = 0;
+ uint quotaflags = 0;
int error = 0;
xfs_mount_common(mp, sbp);
@@ -1210,9 +1258,28 @@ xfs_mountfs(
/*
* Initialise the XFS quota management subsystem for this mount
*/
- error = XFS_QM_INIT(mp, &quotamount, &quotaflags);
- if (error)
- goto out_rtunmount;
+ if (XFS_IS_QUOTA_RUNNING(mp)) {
+ error = xfs_qm_newmount(mp, &quotamount, &quotaflags);
+ if (error)
+ goto out_rtunmount;
+ } else {
+ ASSERT(!XFS_IS_QUOTA_ON(mp));
+
+ /*
+ * If a file system had quotas running earlier, but decided to
+ * mount without -o uquota/pquota/gquota options, revoke the
+ * quotachecked license.
+ */
+ if (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_ACCT) {
+ cmn_err(CE_NOTE,
+ "XFS: resetting qflags for filesystem %s",
+ mp->m_fsname);
+
+ error = xfs_mount_reset_sbqflags(mp);
+ if (error)
+ return error;
+ }
+ }
/*
* Finish recovering the file system. This part needed to be
@@ -1228,9 +1295,19 @@ xfs_mountfs(
/*
* Complete the quota initialisation, post-log-replay component.
*/
- error = XFS_QM_MOUNT(mp, quotamount, quotaflags);
- if (error)
- goto out_rtunmount;
+ if (quotamount) {
+ ASSERT(mp->m_qflags == 0);
+ mp->m_qflags = quotaflags;
+
+ xfs_qm_mount_quotas(mp);
+ }
+
+#if defined(DEBUG) && defined(XFS_LOUD_RECOVERY)
+ if (XFS_IS_QUOTA_ON(mp))
+ xfs_fs_cmn_err(CE_NOTE, mp, "Disk quotas turned on");
+ else
+ xfs_fs_cmn_err(CE_NOTE, mp, "Disk quotas not turned on");
+#endif
/*
* Now we are mounted, reserve a small amount of unused space for
@@ -1279,12 +1356,7 @@ xfs_unmountfs(
__uint64_t resblks;
int error;
- /*
- * Release dquot that rootinode, rbmino and rsumino might be holding,
- * and release the quota inodes.
- */
- XFS_QM_UNMOUNT(mp);
-
+ xfs_qm_unmount_quotas(mp);
xfs_rtunmount_inodes(mp);
IRELE(mp->m_rootip);
@@ -1301,10 +1373,7 @@ xfs_unmountfs(
xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE | XFS_LOG_SYNC);
xfs_reclaim_inodes(mp, 0, XFS_IFLUSH_ASYNC);
- XFS_QM_DQPURGEALL(mp, XFS_QMOPT_QUOTALL | XFS_QMOPT_UMOUNTING);
-
- if (mp->m_quotainfo)
- XFS_QM_DONE(mp);
+ xfs_qm_unmount(mp);
/*
* Flush out the log synchronously so that we know for sure