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

Pull GFS2 updates from Bob Peterson:
 "Here is a list of patches we've accumulated for GFS2 for the current
  upstream merge window.  Last window's set was short, but I warned that
  this one would be bigger, and so it is.  We've got 19 patches:

   - A patch from Abhi Das to propagate the GFS2_DIF_SYSTEM bit so that
     newly added journals don't get flagged, deleted, and recreated by
     fsck.gfs2.

   - Two patches from Andreas Gruenbacher to improve GFS2 performance
     where extended attributes are involved.

   - A patch from Andy Price to fix a suspicious rcu dereference error.

   - Two patches from Ben Marzinski that rework how GFS2's NFS cookies
     are managed.  This fixes readdir problems with nfs-over-gfs2.

   - A patch from Ben Marzinski that fixes a race in unmounting GFS2.

   - A set of four patches from me to move the resource group
     reservations inside the gfs2 inode to improve performance and fix a
     bug whereby get_write_access improperly prevented some operations
     like chown.

   - A patch from me to spinlock-protect the setting of system statfs
     file data.  This was causing small discrepancies between df and du.

   - A patch from me to reintroduce a timeout while clearing glocks
     which was accidentally dropped some time ago.

   - A patch from me to wait for iopen glock dequeues in order to
     improve deleting of files that were unlinked from a different
     cluster node.

   - A patch from me to ensure metadata address spaces get truncated
     when an inode is evicted.

   - A patch from me to fix a bug in which a memory leak could occur in
     some error cases when inodes were trying to be created.

   - A patch to consistently use iopen glocks to transition from the
     unlinked state to the deleted state.

   - A patch to fix a glock reference count error when inode creation
     fails.

   - A patch from Junxiao Bi to fix an flock panic.

   - A patch from Markus Elfring that removes an unnecessary if"

* tag 'gfs2-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
  gfs2: fix flock panic issue
  GFS2: Don't do glock put on when inode creation fails
  GFS2: Always use iopen glock for gl_deletes
  GFS2: Release iopen glock in gfs2_create_inode error cases
  GFS2: Truncate address space mapping when deleting an inode
  GFS2: Wait for iopen glock dequeues
  gfs2: clear journal live bit in	gfs2_log_flush
  gfs2: change gfs2 readdir cookie
  gfs2: keep offset when splitting dir leaf blocks
  GFS2: Reintroduce a timeout in function gfs2_gl_hash_clear
  GFS2: Update master statfs buffer with sd_statfs_spin locked
  GFS2: Reduce size of incore inode
  GFS2: Make rgrp reservations part of the gfs2_inode structure
  GFS2: Extract quota data from reservations structure (revert 5407e24)
  gfs2: Extended attribute readahead optimization
  gfs2: Extended attribute readahead
  GFS2: Use rht_for_each_entry_rcu in glock_hash_walk
  GFS2: Delete an unnecessary check before the function call "iput"
  gfs2: Automatically set GFS2_DIF_SYSTEM flag on system files

1 files changed, 21 insertions, 36 deletions

diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index c134c0462cee..07c0265aa195 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -596,27 +596,13 @@ void gfs2_free_clones(struct gfs2_rgrpd *rgd)
 }
 
 /**
- * gfs2_rs_alloc - make sure we have a reservation assigned to the inode
+ * gfs2_rsqa_alloc - make sure we have a reservation assigned to the inode
+ *                 plus a quota allocations data structure, if necessary
  * @ip: the inode for this reservation
  */
-int gfs2_rs_alloc(struct gfs2_inode *ip)
+int gfs2_rsqa_alloc(struct gfs2_inode *ip)
 {
-	int error = 0;
-
-	down_write(&ip->i_rw_mutex);
-	if (ip->i_res)
-		goto out;
-
-	ip->i_res = kmem_cache_zalloc(gfs2_rsrv_cachep, GFP_NOFS);
-	if (!ip->i_res) {
-		error = -ENOMEM;
-		goto out;
-	}
-
-	RB_CLEAR_NODE(&ip->i_res->rs_node);
-out:
-	up_write(&ip->i_rw_mutex);
-	return error;
+	return gfs2_qa_alloc(ip);
 }
 
 static void dump_rs(struct seq_file *seq, const struct gfs2_blkreserv *rs)
@@ -678,21 +664,20 @@ void gfs2_rs_deltree(struct gfs2_blkreserv *rs)
 }
 
 /**
- * gfs2_rs_delete - delete a multi-block reservation
+ * gfs2_rsqa_delete - delete a multi-block reservation and quota allocation
  * @ip: The inode for this reservation
  * @wcount: The inode's write count, or NULL
  *
  */
-void gfs2_rs_delete(struct gfs2_inode *ip, atomic_t *wcount)
+void gfs2_rsqa_delete(struct gfs2_inode *ip, atomic_t *wcount)
 {
 	down_write(&ip->i_rw_mutex);
-	if (ip->i_res && ((wcount == NULL) || (atomic_read(wcount) <= 1))) {
-		gfs2_rs_deltree(ip->i_res);
-		BUG_ON(ip->i_res->rs_free);
-		kmem_cache_free(gfs2_rsrv_cachep, ip->i_res);
-		ip->i_res = NULL;
+	if ((wcount == NULL) || (atomic_read(wcount) <= 1)) {
+		gfs2_rs_deltree(&ip->i_res);
+		BUG_ON(ip->i_res.rs_free);
 	}
 	up_write(&ip->i_rw_mutex);
+	gfs2_qa_delete(ip, wcount);
 }
 
 /**
@@ -1158,7 +1143,7 @@ static int gfs2_rgrp_bh_get(struct gfs2_rgrpd *rgd)
 
 	for (x = 0; x < length; x++) {
 		bi = rgd->rd_bits + x;
-		error = gfs2_meta_read(gl, rgd->rd_addr + x, 0, &bi->bi_bh);
+		error = gfs2_meta_read(gl, rgd->rd_addr + x, 0, 0, &bi->bi_bh);
 		if (error)
 			goto fail;
 	}
@@ -1456,7 +1441,7 @@ static void rs_insert(struct gfs2_inode *ip)
 {
 	struct rb_node **newn, *parent = NULL;
 	int rc;
-	struct gfs2_blkreserv *rs = ip->i_res;
+	struct gfs2_blkreserv *rs = &ip->i_res;
 	struct gfs2_rgrpd *rgd = rs->rs_rbm.rgd;
 	u64 fsblock = gfs2_rbm_to_block(&rs->rs_rbm);
 
@@ -1503,7 +1488,7 @@ static void rg_mblk_search(struct gfs2_rgrpd *rgd, struct gfs2_inode *ip,
 {
 	struct gfs2_rbm rbm = { .rgd = rgd, };
 	u64 goal;
-	struct gfs2_blkreserv *rs = ip->i_res;
+	struct gfs2_blkreserv *rs = &ip->i_res;
 	u32 extlen;
 	u32 free_blocks = rgd->rd_free_clone - rgd->rd_reserved;
 	int ret;
@@ -1574,7 +1559,7 @@ static u64 gfs2_next_unreserved_block(struct gfs2_rgrpd *rgd, u64 block,
 	}
 
 	if (n) {
-		while ((rs_cmp(block, length, rs) == 0) && (ip->i_res != rs)) {
+		while ((rs_cmp(block, length, rs) == 0) && (&ip->i_res != rs)) {
 			block = gfs2_rbm_to_block(&rs->rs_rbm) + rs->rs_free;
 			n = n->rb_right;
 			if (n == NULL)
@@ -1804,7 +1789,7 @@ static void try_rgrp_unlink(struct gfs2_rgrpd *rgd, u64 *last_unlinked, u64 skip
 			continue;
 		*last_unlinked = block;
 
-		error = gfs2_glock_get(sdp, block, &gfs2_inode_glops, CREATE, &gl);
+		error = gfs2_glock_get(sdp, block, &gfs2_iopen_glops, CREATE, &gl);
 		if (error)
 			continue;
 
@@ -1984,7 +1969,7 @@ int gfs2_inplace_reserve(struct gfs2_inode *ip, struct gfs2_alloc_parms *ap)
 {
 	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
 	struct gfs2_rgrpd *begin = NULL;
-	struct gfs2_blkreserv *rs = ip->i_res;
+	struct gfs2_blkreserv *rs = &ip->i_res;
 	int error = 0, rg_locked, flags = 0;
 	u64 last_unlinked = NO_BLOCK;
 	int loops = 0;
@@ -2113,7 +2098,7 @@ next_rgrp:
 
 void gfs2_inplace_release(struct gfs2_inode *ip)
 {
-	struct gfs2_blkreserv *rs = ip->i_res;
+	struct gfs2_blkreserv *rs = &ip->i_res;
 
 	if (rs->rs_rgd_gh.gh_gl)
 		gfs2_glock_dq_uninit(&rs->rs_rgd_gh);
@@ -2267,7 +2252,7 @@ static void gfs2_rgrp_error(struct gfs2_rgrpd *rgd)
 static void gfs2_adjust_reservation(struct gfs2_inode *ip,
 				    const struct gfs2_rbm *rbm, unsigned len)
 {
-	struct gfs2_blkreserv *rs = ip->i_res;
+	struct gfs2_blkreserv *rs = &ip->i_res;
 	struct gfs2_rgrpd *rgd = rbm->rgd;
 	unsigned rlen;
 	u64 block;
@@ -2310,8 +2295,8 @@ static void gfs2_set_alloc_start(struct gfs2_rbm *rbm,
 {
 	u64 goal;
 
-	if (gfs2_rs_active(ip->i_res)) {
-		*rbm = ip->i_res->rs_rbm;
+	if (gfs2_rs_active(&ip->i_res)) {
+		*rbm = ip->i_res.rs_rbm;
 		return;
 	}
 
@@ -2365,7 +2350,7 @@ int gfs2_alloc_blocks(struct gfs2_inode *ip, u64 *bn, unsigned int *nblocks,
 	gfs2_alloc_extent(&rbm, dinode, nblocks);
 	block = gfs2_rbm_to_block(&rbm);
 	rbm.rgd->rd_last_alloc = block - rbm.rgd->rd_data0;
-	if (gfs2_rs_active(ip->i_res))
+	if (gfs2_rs_active(&ip->i_res))
 		gfs2_adjust_reservation(ip, &rbm, *nblocks);
 	ndata = *nblocks;
 	if (dinode)