Merge tag 'gfs2-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-nmw

Pull GFS2 updates from Steven Whitehouse:
 "The main topics this time are allocation, in the form of Bob's
  improvements when searching resource groups and several updates to
  quotas which should increase scalability.  The quota changes follow on
  from those in the last merge window, and there will likely be further
  work to come in this area in due course.

  There are also a few patches which help to improve efficiency of
  adding entries into directories, and clean up some of that code.

  One on-disk change is included this time, which is to write some
  additional information which should be useful to fsck and also
  potentially for debugging.

  Other than that, its just a few small random bug fixes and clean ups"

* tag 'gfs2-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-nmw: (24 commits)
  GFS2: revert "GFS2: d_splice_alias() can't return error"
  GFS2: Small cleanup
  GFS2: Don't use ENOBUFS when ENOMEM is the correct error code
  GFS2: Fix kbuild test robot reported warning
  GFS2: Move quota bitmap operations under their own lock
  GFS2: Clean up quota slot allocation
  GFS2: Only run logd and quota when mounted read/write
  GFS2: Use RCU/hlist_bl based hash for quotas
  GFS2: No need to invalidate pages for a dio read
  GFS2: Add initialization for address space in super block
  GFS2: Add hints to directory leaf blocks
  GFS2: For exhash conversion, only one block is needed
  GFS2: Increase i_writecount during gfs2_setattr_chown
  GFS2: Remember directory insert point
  GFS2: Consolidate transaction blocks calculation for dir add
  GFS2: Add directory addition info structure
  GFS2: Use only a single address space for rgrps
  GFS2: Use range based functions for rgrp sync/invalidation
  GFS2: Remove test which is always true
  GFS2: Remove gfs2_quota_change_host structure
  ...

1 files changed, 17 insertions, 2 deletions

diff --git a/fs/gfs2/dir.h b/fs/gfs2/dir.h
index 4f03bbd1873..126c65dda02 100644
--- a/fs/gfs2/dir.h
+++ b/fs/gfs2/dir.h
@@ -16,6 +16,14 @@
 struct inode;
 struct gfs2_inode;
 struct gfs2_inum;
+struct buffer_head;
+struct gfs2_dirent;
+
+struct gfs2_diradd {
+	unsigned nr_blocks;
+	struct gfs2_dirent *dent;
+	struct buffer_head *bh;
+};
 
 extern struct inode *gfs2_dir_search(struct inode *dir,
 				     const struct qstr *filename,
@@ -23,7 +31,13 @@ extern struct inode *gfs2_dir_search(struct inode *dir,
 extern int gfs2_dir_check(struct inode *dir, const struct qstr *filename,
 			  const struct gfs2_inode *ip);
 extern int gfs2_dir_add(struct inode *inode, const struct qstr *filename,
-			const struct gfs2_inode *ip);
+			const struct gfs2_inode *ip, struct gfs2_diradd *da);
+static inline void gfs2_dir_no_add(struct gfs2_diradd *da)
+{
+	if (da->bh)
+		brelse(da->bh);
+	da->bh = NULL;
+}
 extern int gfs2_dir_del(struct gfs2_inode *dip, const struct dentry *dentry);
 extern int gfs2_dir_read(struct inode *inode, struct dir_context *ctx,
 			 struct file_ra_state *f_ra);
@@ -33,7 +47,8 @@ extern int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename,
 extern int gfs2_dir_exhash_dealloc(struct gfs2_inode *dip);
 
 extern int gfs2_diradd_alloc_required(struct inode *dir,
-				      const struct qstr *filename);
+				      const struct qstr *filename,
+				      struct gfs2_diradd *da);
 extern int gfs2_dir_get_new_buffer(struct gfs2_inode *ip, u64 block,
 				   struct buffer_head **bhp);
 extern void gfs2_dir_hash_inval(struct gfs2_inode *ip);