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authorChristoph Hellwig <hch@infradead.org>2008-05-20 11:30:52 +1000
committerNiv Sardi <xaiki@debian.org>2008-07-28 16:58:20 +1000
commite48ad3160e5c5f5b952c7a7ed814f6f289a60100 (patch)
tree25f1c0d30cc6b88976ff5dd31f1f983248c238cf
parent61436febae29085bffc7c291db03cbd709dc68a3 (diff)
downloadop-kernel-dev-e48ad3160e5c5f5b952c7a7ed814f6f289a60100.zip
op-kernel-dev-e48ad3160e5c5f5b952c7a7ed814f6f289a60100.tar.gz
[XFS] merge xfs_unmount into xfs_fs_put_super / xfs_fs_fill_super
xfs_unmount is small and already pretty Linux specific, so merge it into the callers. The real unmount path is simplified a little by doing a WARN_ON on the xfs_unmount_flush retval directly instead of propagating the error back to the caller, and the mout failure case in simplified significantly by removing the forced shutdown case and all the dmapi events that shouldn't be sent because the dmapi mount event hasn't been sent by that time either. SGI-PV: 981951 SGI-Modid: xfs-linux-melb:xfs-kern:31188a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
-rw-r--r--fs/xfs/linux-2.6/xfs_super.c71
-rw-r--r--fs/xfs/xfs_vfsops.c87
-rw-r--r--fs/xfs/xfs_vfsops.h1
3 files changed, 67 insertions, 92 deletions
diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c
index a3ecdf4..28132e6 100644
--- a/fs/xfs/linux-2.6/xfs_super.c
+++ b/fs/xfs/linux-2.6/xfs_super.c
@@ -1087,14 +1087,61 @@ xfs_fs_put_super(
struct super_block *sb)
{
struct xfs_mount *mp = XFS_M(sb);
+ struct xfs_inode *rip = mp->m_rootip;
+ int unmount_event_flags = 0;
int error;
kthread_stop(mp->m_sync_task);
xfs_sync(mp, SYNC_ATTR | SYNC_DELWRI);
- error = xfs_unmount(mp, 0, NULL);
- if (error)
- printk("XFS: unmount got error=%d\n", error);
+
+#ifdef HAVE_DMAPI
+ if (mp->m_flags & XFS_MOUNT_DMAPI) {
+ unmount_event_flags =
+ (mp->m_dmevmask & (1 << DM_EVENT_UNMOUNT)) ?
+ 0 : DM_FLAGS_UNWANTED;
+ /*
+ * Ignore error from dmapi here, first unmount is not allowed
+ * to fail anyway, and second we wouldn't want to fail a
+ * unmount because of dmapi.
+ */
+ XFS_SEND_PREUNMOUNT(mp, rip, DM_RIGHT_NULL, rip, DM_RIGHT_NULL,
+ NULL, NULL, 0, 0, unmount_event_flags);
+ }
+#endif
+
+ /*
+ * Blow away any referenced inode in the filestreams cache.
+ * This can and will cause log traffic as inodes go inactive
+ * here.
+ */
+ xfs_filestream_unmount(mp);
+
+ XFS_bflush(mp->m_ddev_targp);
+ error = xfs_unmount_flush(mp, 0);
+ WARN_ON(error);
+
+ IRELE(rip);
+
+ /*
+ * If we're forcing a shutdown, typically because of a media error,
+ * we want to make sure we invalidate dirty pages that belong to
+ * referenced vnodes as well.
+ */
+ if (XFS_FORCED_SHUTDOWN(mp)) {
+ error = xfs_sync(mp, SYNC_WAIT | SYNC_CLOSE);
+ ASSERT(error != EFSCORRUPTED);
+ }
+
+ if (mp->m_flags & XFS_MOUNT_DMAPI) {
+ XFS_SEND_UNMOUNT(mp, rip, DM_RIGHT_NULL, 0, 0,
+ unmount_event_flags);
+ }
+
+ xfs_unmountfs(mp, NULL);
+ xfs_qmops_put(mp);
+ xfs_dmops_put(mp);
+ kmem_free(mp);
}
STATIC void
@@ -1400,7 +1447,23 @@ fail_vnrele:
}
fail_unmount:
- xfs_unmount(mp, 0, NULL);
+ /*
+ * Blow away any referenced inode in the filestreams cache.
+ * This can and will cause log traffic as inodes go inactive
+ * here.
+ */
+ xfs_filestream_unmount(mp);
+
+ XFS_bflush(mp->m_ddev_targp);
+ error = xfs_unmount_flush(mp, 0);
+ WARN_ON(error);
+
+ IRELE(mp->m_rootip);
+
+ xfs_unmountfs(mp, NULL);
+ xfs_qmops_put(mp);
+ xfs_dmops_put(mp);
+ kmem_free(mp);
fail_vfsop:
kmem_free(args);
diff --git a/fs/xfs/xfs_vfsops.c b/fs/xfs/xfs_vfsops.c
index e223aea..bc34f90 100644
--- a/fs/xfs/xfs_vfsops.c
+++ b/fs/xfs/xfs_vfsops.c
@@ -558,93 +558,6 @@ error0:
return error;
}
-int
-xfs_unmount(
- xfs_mount_t *mp,
- int flags,
- cred_t *credp)
-{
- xfs_inode_t *rip;
- bhv_vnode_t *rvp;
- int unmount_event_wanted = 0;
- int unmount_event_flags = 0;
- int xfs_unmountfs_needed = 0;
- int error;
-
- rip = mp->m_rootip;
- rvp = XFS_ITOV(rip);
-
-#ifdef HAVE_DMAPI
- if (mp->m_flags & XFS_MOUNT_DMAPI) {
- error = XFS_SEND_PREUNMOUNT(mp,
- rip, DM_RIGHT_NULL, rip, DM_RIGHT_NULL,
- NULL, NULL, 0, 0,
- (mp->m_dmevmask & (1<<DM_EVENT_PREUNMOUNT))?
- 0:DM_FLAGS_UNWANTED);
- if (error)
- return XFS_ERROR(error);
- unmount_event_wanted = 1;
- unmount_event_flags = (mp->m_dmevmask & (1<<DM_EVENT_UNMOUNT))?
- 0 : DM_FLAGS_UNWANTED;
- }
-#endif
-
- /*
- * Blow away any referenced inode in the filestreams cache.
- * This can and will cause log traffic as inodes go inactive
- * here.
- */
- xfs_filestream_unmount(mp);
-
- XFS_bflush(mp->m_ddev_targp);
- error = xfs_unmount_flush(mp, 0);
- if (error)
- goto out;
-
- ASSERT(vn_count(rvp) == 1);
-
- /*
- * Drop the reference count
- */
- IRELE(rip);
-
- /*
- * If we're forcing a shutdown, typically because of a media error,
- * we want to make sure we invalidate dirty pages that belong to
- * referenced vnodes as well.
- */
- if (XFS_FORCED_SHUTDOWN(mp)) {
- error = xfs_sync(mp, SYNC_WAIT | SYNC_CLOSE);
- ASSERT(error != EFSCORRUPTED);
- }
- xfs_unmountfs_needed = 1;
-
-out:
- /* Send DMAPI event, if required.
- * Then do xfs_unmountfs() if needed.
- * Then return error (or zero).
- */
- if (unmount_event_wanted) {
- /* Note: mp structure must still exist for
- * XFS_SEND_UNMOUNT() call.
- */
- XFS_SEND_UNMOUNT(mp, error == 0 ? rip : NULL,
- DM_RIGHT_NULL, 0, error, unmount_event_flags);
- }
- if (xfs_unmountfs_needed) {
- /*
- * Call common unmount function to flush to disk
- * and free the super block buffer & mount structures.
- */
- xfs_unmountfs(mp, credp);
- xfs_qmops_put(mp);
- xfs_dmops_put(mp);
- kmem_free(mp);
- }
-
- return XFS_ERROR(error);
-}
-
STATIC void
xfs_quiesce_fs(
xfs_mount_t *mp)
diff --git a/fs/xfs/xfs_vfsops.h b/fs/xfs/xfs_vfsops.h
index 995091f..de64bb6 100644
--- a/fs/xfs/xfs_vfsops.h
+++ b/fs/xfs/xfs_vfsops.h
@@ -10,7 +10,6 @@ struct xfs_mount_args;
int xfs_mount(struct xfs_mount *mp, struct xfs_mount_args *args,
struct cred *credp);
-int xfs_unmount(struct xfs_mount *mp, int flags, struct cred *credp);
int xfs_sync(struct xfs_mount *mp, int flags);
void xfs_do_force_shutdown(struct xfs_mount *mp, int flags, char *fname,
int lnnum);
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