xfs: move xfs_do_force_shutdown() and kill xfs_rw.c

[firefly-linux-kernel-4.4.55.git] / fs / xfs / xfs_fsops.c

diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index f6c7698c9a75e0c6deac1ba182768caac902cc4d..537c2aeb1ad25a0546f3f10f5b4d7d9be1e69876 100644 (file)
--- a/fs/xfs/xfs_fsops.c
+++ b/fs/xfs/xfs_fsops.c
@@ -688,3 +688,63 @@ xfs_fs_goingdown(
 
        return 0;
 }
+
+/*
+ * Force a shutdown of the filesystem instantly while keeping the filesystem
+ * consistent. We don't do an unmount here; just shutdown the shop, make sure
+ * that absolutely nothing persistent happens to this filesystem after this
+ * point.
+ */
+void
+xfs_do_force_shutdown(
+       xfs_mount_t     *mp,
+       int             flags,
+       char            *fname,
+       int             lnnum)
+{
+       int             logerror;
+
+       logerror = flags & SHUTDOWN_LOG_IO_ERROR;
+
+       if (!(flags & SHUTDOWN_FORCE_UMOUNT)) {
+               xfs_notice(mp,
+       "%s(0x%x) called from line %d of file %s.  Return address = 0x%p",
+                       __func__, flags, lnnum, fname, __return_address);
+       }
+       /*
+        * No need to duplicate efforts.
+        */
+       if (XFS_FORCED_SHUTDOWN(mp) && !logerror)
+               return;
+
+       /*
+        * This flags XFS_MOUNT_FS_SHUTDOWN, makes sure that we don't
+        * queue up anybody new on the log reservations, and wakes up
+        * everybody who's sleeping on log reservations to tell them
+        * the bad news.
+        */
+       if (xfs_log_force_umount(mp, logerror))
+               return;
+
+       if (flags & SHUTDOWN_CORRUPT_INCORE) {
+               xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_CORRUPT,
+    "Corruption of in-memory data detected.  Shutting down filesystem");
+               if (XFS_ERRLEVEL_HIGH <= xfs_error_level)
+                       xfs_stack_trace();
+       } else if (!(flags & SHUTDOWN_FORCE_UMOUNT)) {
+               if (logerror) {
+                       xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_LOGERROR,
+               "Log I/O Error Detected.  Shutting down filesystem");
+               } else if (flags & SHUTDOWN_DEVICE_REQ) {
+                       xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR,
+               "All device paths lost.  Shutting down filesystem");
+               } else if (!(flags & SHUTDOWN_REMOTE_REQ)) {
+                       xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR,
+               "I/O Error Detected. Shutting down filesystem");
+               }
+       }
+       if (!(flags & SHUTDOWN_FORCE_UMOUNT)) {
+               xfs_alert(mp,
+       "Please umount the filesystem and rectify the problem(s)");
+       }
+}