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authorDave Chinner <dchinner@redhat.com>2012-10-08 21:56:08 +1100
committerBen Myers <bpm@sgi.com>2012-10-17 13:39:14 -0500
commitc75921a72a7c4bb73a5e09a697a672722e5543f1 (patch)
treeed46f37241cdc860ffc691f6d71159333c434a83 /fs/xfs/xfs_log.c
parentc7eea6f7adca4501d2c2db7f0f7c9dc88efac95e (diff)
xfs: xfs_quiesce_attr() should quiesce the log like unmount
xfs_quiesce_attr() is supposed to leave the log empty with an unmount record written. Right now it does not wait for the AIL to be emptied before writing the unmount record, not does it wait for metadata IO completion, either. Fix it to use the same method and code as xfs_log_unmount(). Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_log.c')
-rw-r--r--fs/xfs/xfs_log.c25
1 files changed, 18 insertions, 7 deletions
diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index b6ce4d4b6def..d2d59692739f 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -855,20 +855,17 @@ xfs_log_unmount_write(xfs_mount_t *mp)
} /* xfs_log_unmount_write */
/*
- * Shut down and release the AIL and Log.
- *
- * During unmount, we need to ensure we flush all the dirty metadata objects
- * from the AIL so that the log is empty before we write the unmount record to
- * the log.
+ * Empty the log for unmount/freeze.
*
* To do this, we first need to shut down the background log work so it is not
* trying to cover the log as we clean up. We then need to unpin all objects in
* the log so we can then flush them out. Once they have completed their IO and
* run the callbacks removing themselves from the AIL, we can write the unmount
- * record, tear down the AIL and finally free the log.
+ * record.
*/
void
-xfs_log_unmount(xfs_mount_t *mp)
+xfs_log_quiesce(
+ struct xfs_mount *mp)
{
cancel_delayed_work_sync(&mp->m_log->l_work);
xfs_log_force(mp, XFS_LOG_SYNC);
@@ -886,6 +883,20 @@ xfs_log_unmount(xfs_mount_t *mp)
xfs_buf_unlock(mp->m_sb_bp);
xfs_log_unmount_write(mp);
+}
+
+/*
+ * Shut down and release the AIL and Log.
+ *
+ * During unmount, we need to ensure we flush all the dirty metadata objects
+ * from the AIL so that the log is empty before we write the unmount record to
+ * the log. Once this is done, we can tear down the AIL and the log.
+ */
+void
+xfs_log_unmount(
+ struct xfs_mount *mp)
+{
+ xfs_log_quiesce(mp);
xfs_trans_ail_destroy(mp);
xlog_dealloc_log(mp->m_log);