Merge tag 'gfs2-5.1.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2

Pull gfs2 updates from Bob Peterson:
 "We've only got three patches ready for this merge window:

   - Fix a hang related to missed wakeups for glocks from Andreas
     Gruenbacher

   - Rework of how gfs2 manages its debugfs files from Greg K-H

   - An incorrect assert when truncating or deleting files from Tim
     Smith"

* tag 'gfs2-5.1.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
  gfs2: Fix missed wakeups in find_insert_glock
  gfs2: Fix an incorrect gfs2_assert()
  gfs: no need to check return value of debugfs_create functions

fs/gfs2/glock.c

@@ -107,7 +107,7 @@ static int glock_wake_function(wait_queue_entry_t *wait, unsigned int mode,
 
 static wait_queue_head_t *glock_waitqueue(struct lm_lockname *name)
 {
-	u32 hash = jhash2((u32 *)name, sizeof(*name) / 4, 0);
+	u32 hash = jhash2((u32 *)name, ht_parms.key_len / 4, 0);
 
 	return glock_wait_table + hash_32(hash, GLOCK_WAIT_TABLE_BITS);
 }
@@ -2131,71 +2131,29 @@ static const struct file_operations gfs2_sbstats_fops = {
 	.release = seq_release,
 };
 
-int gfs2_create_debugfs_file(struct gfs2_sbd *sdp)
+void gfs2_create_debugfs_file(struct gfs2_sbd *sdp)
 {
-	struct dentry *dent;
+	sdp->debugfs_dir = debugfs_create_dir(sdp->sd_table_name, gfs2_root);
 
-	dent = debugfs_create_dir(sdp->sd_table_name, gfs2_root);
-	if (IS_ERR_OR_NULL(dent))
-		goto fail;
-	sdp->debugfs_dir = dent;
-
-	dent = debugfs_create_file("glocks",
-				   S_IFREG | S_IRUGO,
-				   sdp->debugfs_dir, sdp,
+	debugfs_create_file("glocks", S_IFREG | S_IRUGO, sdp->debugfs_dir, sdp,
 			    &gfs2_glocks_fops);
-	if (IS_ERR_OR_NULL(dent))
-		goto fail;
-	sdp->debugfs_dentry_glocks = dent;
 
-	dent = debugfs_create_file("glstats",
-				   S_IFREG | S_IRUGO,
-				   sdp->debugfs_dir, sdp,
+	debugfs_create_file("glstats", S_IFREG | S_IRUGO, sdp->debugfs_dir, sdp,
 			    &gfs2_glstats_fops);
-	if (IS_ERR_OR_NULL(dent))
-		goto fail;
-	sdp->debugfs_dentry_glstats = dent;
 
-	dent = debugfs_create_file("sbstats",
-				   S_IFREG | S_IRUGO,
-				   sdp->debugfs_dir, sdp,
+	debugfs_create_file("sbstats", S_IFREG | S_IRUGO, sdp->debugfs_dir, sdp,
 			    &gfs2_sbstats_fops);
-	if (IS_ERR_OR_NULL(dent))
-		goto fail;
-	sdp->debugfs_dentry_sbstats = dent;
-
-	return 0;
-fail:
-	gfs2_delete_debugfs_file(sdp);
-	return dent ? PTR_ERR(dent) : -ENOMEM;
 }
 
 void gfs2_delete_debugfs_file(struct gfs2_sbd *sdp)
 {
-	if (sdp->debugfs_dir) {
-		if (sdp->debugfs_dentry_glocks) {
-			debugfs_remove(sdp->debugfs_dentry_glocks);
-			sdp->debugfs_dentry_glocks = NULL;
-		}
-		if (sdp->debugfs_dentry_glstats) {
-			debugfs_remove(sdp->debugfs_dentry_glstats);
-			sdp->debugfs_dentry_glstats = NULL;
-		}
-		if (sdp->debugfs_dentry_sbstats) {
-			debugfs_remove(sdp->debugfs_dentry_sbstats);
-			sdp->debugfs_dentry_sbstats = NULL;
-		}
-		debugfs_remove(sdp->debugfs_dir);
+	debugfs_remove_recursive(sdp->debugfs_dir);
 	sdp->debugfs_dir = NULL;
-	}
 }
 
-int gfs2_register_debugfs(void)
+void gfs2_register_debugfs(void)
 {
 	gfs2_root = debugfs_create_dir("gfs2", NULL);
-	if (IS_ERR(gfs2_root))
-		return PTR_ERR(gfs2_root);
-	return gfs2_root ? 0 : -ENOMEM;
 }
 
 void gfs2_unregister_debugfs(void)

fs/gfs2/glock.h

@@ -243,9 +243,9 @@ extern void gfs2_glock_free(struct gfs2_glock *gl);
 extern int __init gfs2_glock_init(void);
 extern void gfs2_glock_exit(void);
 
-extern int gfs2_create_debugfs_file(struct gfs2_sbd *sdp);
+extern void gfs2_create_debugfs_file(struct gfs2_sbd *sdp);
 extern void gfs2_delete_debugfs_file(struct gfs2_sbd *sdp);
-extern int gfs2_register_debugfs(void);
+extern void gfs2_register_debugfs(void);
 extern void gfs2_unregister_debugfs(void);
 
 extern const struct lm_lockops gfs2_dlm_ops;

fs/gfs2/incore.h

@@ -853,9 +853,6 @@ struct gfs2_sbd {
 
 	unsigned long sd_last_warning;
 	struct dentry *debugfs_dir;    /* debugfs directory */
-	struct dentry *debugfs_dentry_glocks;
-	struct dentry *debugfs_dentry_glstats;
-	struct dentry *debugfs_dentry_sbstats;
 };
 
 static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which)

fs/gfs2/inode.h

@@ -59,8 +59,8 @@ static inline u64 gfs2_get_inode_blocks(const struct inode *inode)
 
 static inline void gfs2_add_inode_blocks(struct inode *inode, s64 change)
 {
-	gfs2_assert(GFS2_SB(inode), (change >= 0 || inode->i_blocks > -change));
-	change *= (GFS2_SB(inode)->sd_sb.sb_bsize/GFS2_BASIC_BLOCK);
+	change <<= inode->i_blkbits - GFS2_BASIC_BLOCK_SHIFT;
+	gfs2_assert(GFS2_SB(inode), (change >= 0 || inode->i_blocks >= -change));
 	inode->i_blocks += change;
 }
 

fs/gfs2/main.c

@@ -178,16 +178,12 @@ static int __init init_gfs2_fs(void)
 	if (!gfs2_page_pool)
 		goto fail_mempool;
 
-	error = gfs2_register_debugfs();
-	if (error)
-		goto fail_debugfs;
+	gfs2_register_debugfs();
 
 	pr_info("GFS2 installed\n");
 
 	return 0;
 
-fail_debugfs:
-	mempool_destroy(gfs2_page_pool);
 fail_mempool:
 	destroy_workqueue(gfs2_freeze_wq);
 fail_wq3: