Merge commit 'v2.6.27-rc3' into x86/prototypes

Conflicts:

	include/asm-x86/dma-mapping.h

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 38 insertions, 80 deletions

diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index da3988453b7..6c5d1325e7f 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -47,12 +47,10 @@
 
 STATIC int	xfs_mount_log_sb(xfs_mount_t *, __int64_t);
 STATIC int	xfs_uuid_mount(xfs_mount_t *);
-STATIC void	xfs_uuid_unmount(xfs_mount_t *mp);
 STATIC void	xfs_unmountfs_wait(xfs_mount_t *);
 
 
 #ifdef HAVE_PERCPU_SB
-STATIC void	xfs_icsb_destroy_counters(xfs_mount_t *);
 STATIC void	xfs_icsb_balance_counter(xfs_mount_t *, xfs_sb_field_t,
 						int);
 STATIC void	xfs_icsb_balance_counter_locked(xfs_mount_t *, xfs_sb_field_t,
@@ -63,7 +61,6 @@ STATIC void	xfs_icsb_disable_counter(xfs_mount_t *, xfs_sb_field_t);
 
 #else
 
-#define xfs_icsb_destroy_counters(mp)			do { } while (0)
 #define xfs_icsb_balance_counter(mp, a, b)		do { } while (0)
 #define xfs_icsb_balance_counter_locked(mp, a, b)	do { } while (0)
 #define xfs_icsb_modify_counters(mp, a, b, c)		do { } while (0)
@@ -126,33 +123,11 @@ static const struct {
 };
 
 /*
- * Return a pointer to an initialized xfs_mount structure.
- */
-xfs_mount_t *
-xfs_mount_init(void)
-{
-	xfs_mount_t *mp;
-
-	mp = kmem_zalloc(sizeof(xfs_mount_t), KM_SLEEP);
-
-	if (xfs_icsb_init_counters(mp)) {
-		mp->m_flags |= XFS_MOUNT_NO_PERCPU_SB;
-	}
-
-	spin_lock_init(&mp->m_sb_lock);
-	mutex_init(&mp->m_ilock);
-	mutex_init(&mp->m_growlock);
-	atomic_set(&mp->m_active_trans, 0);
-
-	return mp;
-}
-
-/*
  * Free up the resources associated with a mount structure.  Assume that
  * the structure was initially zeroed, so we can tell which fields got
  * initialized.
  */
-void
+STATIC void
 xfs_mount_free(
 	xfs_mount_t	*mp)
 {
@@ -161,11 +136,8 @@ xfs_mount_free(
 
 		for (agno = 0; agno < mp->m_maxagi; agno++)
 			if (mp->m_perag[agno].pagb_list)
-				kmem_free(mp->m_perag[agno].pagb_list,
-						sizeof(xfs_perag_busy_t) *
-							XFS_PAGB_NUM_SLOTS);
-		kmem_free(mp->m_perag,
-			  sizeof(xfs_perag_t) * mp->m_sb.sb_agcount);
+				kmem_free(mp->m_perag[agno].pagb_list);
+		kmem_free(mp->m_perag);
 	}
 
 	spinlock_destroy(&mp->m_ail_lock);
@@ -176,13 +148,11 @@ xfs_mount_free(
 		XFS_QM_DONE(mp);
 
 	if (mp->m_fsname != NULL)
-		kmem_free(mp->m_fsname, mp->m_fsname_len);
+		kmem_free(mp->m_fsname);
 	if (mp->m_rtname != NULL)
-		kmem_free(mp->m_rtname, strlen(mp->m_rtname) + 1);
+		kmem_free(mp->m_rtname);
 	if (mp->m_logname != NULL)
-		kmem_free(mp->m_logname, strlen(mp->m_logname) + 1);
-
-	xfs_icsb_destroy_counters(mp);
+		kmem_free(mp->m_logname);
 }
 
 /*
@@ -288,6 +258,19 @@ xfs_mount_validate_sb(
 		return XFS_ERROR(EFSCORRUPTED);
 	}
 
+	/*
+	 * Until this is fixed only page-sized or smaller data blocks work.
+	 */
+	if (unlikely(sbp->sb_blocksize > PAGE_SIZE)) {
+		xfs_fs_mount_cmn_err(flags,
+			"file system with blocksize %d bytes",
+			sbp->sb_blocksize);
+		xfs_fs_mount_cmn_err(flags,
+			"only pagesize (%ld) or less will currently work.",
+			PAGE_SIZE);
+		return XFS_ERROR(ENOSYS);
+	}
+
 	if (xfs_sb_validate_fsb_count(sbp, sbp->sb_dblocks) ||
 	    xfs_sb_validate_fsb_count(sbp, sbp->sb_rblocks)) {
 		xfs_fs_mount_cmn_err(flags,
@@ -309,19 +292,6 @@ xfs_mount_validate_sb(
 		return XFS_ERROR(ENOSYS);
 	}
 
-	/*
-	 * Until this is fixed only page-sized or smaller data blocks work.
-	 */
-	if (unlikely(sbp->sb_blocksize > PAGE_SIZE)) {
-		xfs_fs_mount_cmn_err(flags,
-			"file system with blocksize %d bytes",
-			sbp->sb_blocksize);
-		xfs_fs_mount_cmn_err(flags,
-			"only pagesize (%ld) or less will currently work.",
-			PAGE_SIZE);
-		return XFS_ERROR(ENOSYS);
-	}
-
 	return 0;
 }
 
@@ -994,9 +964,19 @@ xfs_mountfs(
 		 * Re-check for ATTR2 in case it was found in bad_features2
 		 * slot.
 		 */
-		if (xfs_sb_version_hasattr2(&mp->m_sb))
+		if (xfs_sb_version_hasattr2(&mp->m_sb) &&
+		   !(mp->m_flags & XFS_MOUNT_NOATTR2))
 			mp->m_flags |= XFS_MOUNT_ATTR2;
+	}
+
+	if (xfs_sb_version_hasattr2(&mp->m_sb) &&
+	   (mp->m_flags & XFS_MOUNT_NOATTR2)) {
+		xfs_sb_version_removeattr2(&mp->m_sb);
+		update_flags |= XFS_SB_FEATURES2;
 
+		/* update sb_versionnum for the clearing of the morebits */
+		if (!sbp->sb_features2)
+			update_flags |= XFS_SB_VERSIONNUM;
 	}
 
 	/*
@@ -1255,15 +1235,13 @@ xfs_mountfs(
  error2:
 	for (agno = 0; agno < sbp->sb_agcount; agno++)
 		if (mp->m_perag[agno].pagb_list)
-			kmem_free(mp->m_perag[agno].pagb_list,
-			  sizeof(xfs_perag_busy_t) * XFS_PAGB_NUM_SLOTS);
-	kmem_free(mp->m_perag, sbp->sb_agcount * sizeof(xfs_perag_t));
+			kmem_free(mp->m_perag[agno].pagb_list);
+	kmem_free(mp->m_perag);
 	mp->m_perag = NULL;
 	/* FALLTHROUGH */
  error1:
 	if (uuid_mounted)
-		xfs_uuid_unmount(mp);
-	xfs_freesb(mp);
+		uuid_table_remove(&mp->m_sb.sb_uuid);
 	return error;
 }
 
@@ -1274,7 +1252,7 @@ xfs_mountfs(
  * log and makes sure that incore structures are freed.
  */
 int
-xfs_unmountfs(xfs_mount_t *mp, struct cred *cr)
+xfs_unmountfs(xfs_mount_t *mp)
 {
 	__uint64_t	resblks;
 	int		error = 0;
@@ -1341,9 +1319,8 @@ xfs_unmountfs(xfs_mount_t *mp, struct cred *cr)
 	 */
 	ASSERT(mp->m_inodes == NULL);
 
-	xfs_unmountfs_close(mp, cr);
 	if ((mp->m_flags & XFS_MOUNT_NOUUID) == 0)
-		xfs_uuid_unmount(mp);
+		uuid_table_remove(&mp->m_sb.sb_uuid);
 
 #if defined(DEBUG) || defined(INDUCE_IO_ERROR)
 	xfs_errortag_clearall(mp, 0);
@@ -1352,16 +1329,6 @@ xfs_unmountfs(xfs_mount_t *mp, struct cred *cr)
 	return 0;
 }
 
-void
-xfs_unmountfs_close(xfs_mount_t *mp, struct cred *cr)
-{
-	if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp)
-		xfs_free_buftarg(mp->m_logdev_targp, 1);
-	if (mp->m_rtdev_targp)
-		xfs_free_buftarg(mp->m_rtdev_targp, 1);
-	xfs_free_buftarg(mp->m_ddev_targp, 0);
-}
-
 STATIC void
 xfs_unmountfs_wait(xfs_mount_t *mp)
 {
@@ -1905,16 +1872,6 @@ xfs_uuid_mount(
 }
 
 /*
- * Remove filesystem from the UUID table.
- */
-STATIC void
-xfs_uuid_unmount(
-	xfs_mount_t	*mp)
-{
-	uuid_table_remove(&mp->m_sb.sb_uuid);
-}
-
-/*
  * Used to log changes to the superblock unit and width fields which could
  * be altered by the mount options, as well as any potential sb_features2
  * fixup. Only the first superblock is updated.
@@ -1928,7 +1885,8 @@ xfs_mount_log_sb(
 	int		error;
 
 	ASSERT(fields & (XFS_SB_UNIT | XFS_SB_WIDTH | XFS_SB_UUID |
-			 XFS_SB_FEATURES2 | XFS_SB_BAD_FEATURES2));
+			 XFS_SB_FEATURES2 | XFS_SB_BAD_FEATURES2 |
+			 XFS_SB_VERSIONNUM));
 
 	tp = xfs_trans_alloc(mp, XFS_TRANS_SB_UNIT);
 	error = xfs_trans_reserve(tp, 0, mp->m_sb.sb_sectsize + 128, 0, 0,
@@ -2109,7 +2067,7 @@ xfs_icsb_reinit_counters(
 	xfs_icsb_unlock(mp);
 }
 
-STATIC void
+void
 xfs_icsb_destroy_counters(
 	xfs_mount_t	*mp)
 {