Merge branch 'master' of /home/trondmy/kernel/linux-2.6/

Conflicts:

	fs/nfs/inode.c
	fs/super.c

Fix conflicts between patch 'NFS: Split fs/nfs/inode.c' and patch
'VFS: Permit filesystem to override root dentry on mount'

1 files changed, 31 insertions, 23 deletions

diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index c0b1c290688..10dbf203c62 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -24,14 +24,12 @@
 #include "xfs_trans.h"
 #include "xfs_sb.h"
 #include "xfs_ag.h"
-#include "xfs_dir.h"
 #include "xfs_dir2.h"
 #include "xfs_dmapi.h"
 #include "xfs_mount.h"
 #include "xfs_bmap_btree.h"
 #include "xfs_alloc_btree.h"
 #include "xfs_ialloc_btree.h"
-#include "xfs_dir_sf.h"
 #include "xfs_dir2_sf.h"
 #include "xfs_attr_sf.h"
 #include "xfs_dinode.h"
@@ -196,7 +194,7 @@ xfs_mount_free(
 		kmem_free(mp->m_logname, strlen(mp->m_logname) + 1);
 
 	if (remove_bhv) {
-		struct vfs	*vfsp = XFS_MTOVFS(mp);
+		struct bhv_vfs	*vfsp = XFS_MTOVFS(mp);
 
 		bhv_remove_all_vfsops(vfsp, 0);
 		VFS_REMOVEBHV(vfsp, &mp->m_bhv);
@@ -337,7 +335,7 @@ xfs_mount_validate_sb(
 
 xfs_agnumber_t
 xfs_initialize_perag(
-	struct vfs	*vfs,
+	bhv_vfs_t	*vfs,
 	xfs_mount_t	*mp,
 	xfs_agnumber_t	agcount)
 {
@@ -651,14 +649,14 @@ xfs_mount_common(xfs_mount_t *mp, xfs_sb_t *sbp)
  */
 int
 xfs_mountfs(
-	vfs_t		*vfsp,
+	bhv_vfs_t	*vfsp,
 	xfs_mount_t	*mp,
 	int		mfsi_flags)
 {
 	xfs_buf_t	*bp;
 	xfs_sb_t	*sbp = &(mp->m_sb);
 	xfs_inode_t	*rip;
-	vnode_t		*rvp = NULL;
+	bhv_vnode_t	*rvp = NULL;
 	int		readio_log, writeio_log;
 	xfs_daddr_t	d;
 	__uint64_t	ret64;
@@ -934,18 +932,7 @@ xfs_mountfs(
 	vfsp->vfs_altfsid = (xfs_fsid_t *)mp->m_fixedfsid;
 	mp->m_dmevmask = 0;	/* not persistent; set after each mount */
 
-	/*
-	 * Select the right directory manager.
-	 */
-	mp->m_dirops =
-		XFS_SB_VERSION_HASDIRV2(&mp->m_sb) ?
-			xfsv2_dirops :
-			xfsv1_dirops;
-
-	/*
-	 * Initialize directory manager's entries.
-	 */
-	XFS_DIR_MOUNT(mp);
+	xfs_dir_mount(mp);
 
 	/*
 	 * Initialize the attribute manager's entries.
@@ -1006,8 +993,9 @@ xfs_mountfs(
 
 	if (unlikely((rip->i_d.di_mode & S_IFMT) != S_IFDIR)) {
 		cmn_err(CE_WARN, "XFS: corrupted root inode");
-		prdev("Root inode %llu is not a directory",
-		      mp->m_ddev_targp, (unsigned long long)rip->i_ino);
+		cmn_err(CE_WARN, "Device %s - root %llu is not a directory",
+			XFS_BUFTARG_NAME(mp->m_ddev_targp),
+			(unsigned long long)rip->i_ino);
 		xfs_iunlock(rip, XFS_ILOCK_EXCL);
 		XFS_ERROR_REPORT("xfs_mountfs_int(2)", XFS_ERRLEVEL_LOW,
 				 mp);
@@ -1094,7 +1082,7 @@ xfs_mountfs(
 int
 xfs_unmountfs(xfs_mount_t *mp, struct cred *cr)
 {
-	struct vfs	*vfsp = XFS_MTOVFS(mp);
+	struct bhv_vfs	*vfsp = XFS_MTOVFS(mp);
 #if defined(DEBUG) || defined(INDUCE_IO_ERROR)
 	int64_t		fsid;
 #endif
@@ -1254,6 +1242,26 @@ xfs_mod_sb(xfs_trans_t *tp, __int64_t fields)
 
 	xfs_trans_log_buf(tp, bp, first, last);
 }
+
+/*
+ * In order to avoid ENOSPC-related deadlock caused by
+ * out-of-order locking of AGF buffer (PV 947395), we place
+ * constraints on the relationship among actual allocations for
+ * data blocks, freelist blocks, and potential file data bmap
+ * btree blocks. However, these restrictions may result in no
+ * actual space allocated for a delayed extent, for example, a data
+ * block in a certain AG is allocated but there is no additional
+ * block for the additional bmap btree block due to a split of the
+ * bmap btree of the file. The result of this may lead to an
+ * infinite loop in xfssyncd when the file gets flushed to disk and
+ * all delayed extents need to be actually allocated. To get around
+ * this, we explicitly set aside a few blocks which will not be
+ * reserved in delayed allocation. Considering the minimum number of
+ * needed freelist blocks is 4 fsbs, a potential split of file's bmap
+ * btree requires 1 fsb, so we set the number of set-aside blocks to 8.
+*/
+#define SET_ASIDE_BLOCKS 8
+
 /*
  * xfs_mod_incore_sb_unlocked() is a utility routine common used to apply
  * a delta to a specified field in the in-core superblock.  Simply
@@ -1298,7 +1306,7 @@ xfs_mod_incore_sb_unlocked(xfs_mount_t *mp, xfs_sb_field_t field,
 		return 0;
 	case XFS_SBS_FDBLOCKS:
 
-		lcounter = (long long)mp->m_sb.sb_fdblocks;
+		lcounter = (long long)mp->m_sb.sb_fdblocks - SET_ASIDE_BLOCKS;
 		res_used = (long long)(mp->m_resblks - mp->m_resblks_avail);
 
 		if (delta > 0) {		/* Putting blocks back */
@@ -1332,7 +1340,7 @@ xfs_mod_incore_sb_unlocked(xfs_mount_t *mp, xfs_sb_field_t field,
 			}
 		}
 
-		mp->m_sb.sb_fdblocks = lcounter;
+		mp->m_sb.sb_fdblocks = lcounter + SET_ASIDE_BLOCKS;
 		return 0;
 	case XFS_SBS_FREXTENTS:
 		lcounter = (long long)mp->m_sb.sb_frextents;