1 files changed, 20 insertions, 85 deletions

diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index 3a7344124f30..1e880cedefa4 100644
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -2539,16 +2539,7 @@ error_dump:
 
 #define chance(n, d) (simple_rand() <= (n) * 32768LL / (d))
 
-struct failure_mode_info {
-	struct list_head list;
-	struct ubifs_info *c;
-};
-
-static LIST_HEAD(fmi_list);
-static DEFINE_SPINLOCK(fmi_lock);
-
 static unsigned int next;
-
 static int simple_rand(void)
 {
 	if (next == 0)
@@ -2557,69 +2548,15 @@ static int simple_rand(void)
 	return (next >> 16) & 32767;
 }
 
-static void failure_mode_init(struct ubifs_info *c)
-{
-	struct failure_mode_info *fmi;
-
-	fmi = kmalloc(sizeof(struct failure_mode_info), GFP_NOFS);
-	if (!fmi) {
-		ubifs_err("Failed to register failure mode - no memory");
-		return;
-	}
-	fmi->c = c;
-	spin_lock(&fmi_lock);
-	list_add_tail(&fmi->list, &fmi_list);
-	spin_unlock(&fmi_lock);
-}
-
-static void failure_mode_exit(struct ubifs_info *c)
-{
-	struct failure_mode_info *fmi, *tmp;
-
-	spin_lock(&fmi_lock);
-	list_for_each_entry_safe(fmi, tmp, &fmi_list, list)
-		if (fmi->c == c) {
-			list_del(&fmi->list);
-			kfree(fmi);
-		}
-	spin_unlock(&fmi_lock);
-}
-
-static struct ubifs_info *dbg_find_info(struct ubi_volume_desc *desc)
+static int do_fail(struct ubifs_info *c, int lnum, int write)
 {
-	struct failure_mode_info *fmi;
-
-	spin_lock(&fmi_lock);
-	list_for_each_entry(fmi, &fmi_list, list)
-		if (fmi->c->ubi == desc) {
-			struct ubifs_info *c = fmi->c;
-
-			spin_unlock(&fmi_lock);
-			return c;
-		}
-	spin_unlock(&fmi_lock);
-	return NULL;
-}
-
-static int in_failure_mode(struct ubi_volume_desc *desc)
-{
-	struct ubifs_info *c = dbg_find_info(desc);
+	struct ubifs_debug_info *d = c->dbg;
 
-	if (c && dbg_is_tst_rcvry(c))
-		return c->dbg->failure_mode;
-	return 0;
-}
+	ubifs_assert(dbg_is_tst_rcvry(c));
 
-static int do_fail(struct ubi_volume_desc *desc, int lnum, int write)
-{
-	struct ubifs_info *c = dbg_find_info(desc);
-	struct ubifs_debug_info *d;
-
-	if (!c || !dbg_is_tst_rcvry(c))
-		return 0;
-	d = c->dbg;
 	if (d->failure_mode)
 		return 1;
+
 	if (!d->fail_cnt) {
 		/* First call - decide delay to failure */
 		if (chance(1, 2)) {
@@ -2716,17 +2653,17 @@ static void cut_data(const void *buf, int len)
 		p[i] = 0xff;
 }
 
-int dbg_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf,
+int dbg_leb_write(struct ubifs_info *c, int lnum, const void *buf,
 		  int offs, int len, int dtype)
 {
 	int err, failing;
 
-	if (in_failure_mode(desc))
+	if (c->dbg->failure_mode)
 		return -EROFS;
-	failing = do_fail(desc, lnum, 1);
+	failing = do_fail(c, lnum, 1);
 	if (failing)
 		cut_data(buf, len);
-	err = ubi_leb_write(desc, lnum, buf, offs, len, dtype);
+	err = ubi_leb_write(c->ubi, lnum, buf, offs, len, dtype);
 	if (err)
 		return err;
 	if (failing)
@@ -2734,45 +2671,45 @@ int dbg_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf,
 	return 0;
 }
 
-int dbg_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf,
+int dbg_leb_change(struct ubifs_info *c, int lnum, const void *buf,
 		   int len, int dtype)
 {
 	int err;
 
-	if (do_fail(desc, lnum, 1))
+	if (do_fail(c, lnum, 1))
 		return -EROFS;
-	err = ubi_leb_change(desc, lnum, buf, len, dtype);
+	err = ubi_leb_change(c->ubi, lnum, buf, len, dtype);
 	if (err)
 		return err;
-	if (do_fail(desc, lnum, 1))
+	if (do_fail(c, lnum, 1))
 		return -EROFS;
 	return 0;
 }
 
-int dbg_leb_unmap(struct ubi_volume_desc *desc, int lnum)
+int dbg_leb_unmap(struct ubifs_info *c, int lnum)
 {
 	int err;
 
-	if (do_fail(desc, lnum, 0))
+	if (do_fail(c, lnum, 0))
 		return -EROFS;
-	err = ubi_leb_unmap(desc, lnum);
+	err = ubi_leb_unmap(c->ubi, lnum);
 	if (err)
 		return err;
-	if (do_fail(desc, lnum, 0))
+	if (do_fail(c, lnum, 0))
 		return -EROFS;
 	return 0;
 }
 
-int dbg_leb_map(struct ubi_volume_desc *desc, int lnum, int dtype)
+int dbg_leb_map(struct ubifs_info *c, int lnum, int dtype)
 {
 	int err;
 
-	if (do_fail(desc, lnum, 0))
+	if (do_fail(c, lnum, 0))
 		return -EROFS;
-	err = ubi_leb_map(desc, lnum, dtype);
+	err = ubi_leb_map(c->ubi, lnum, dtype);
 	if (err)
 		return err;
-	if (do_fail(desc, lnum, 0))
+	if (do_fail(c, lnum, 0))
 		return -EROFS;
 	return 0;
 }
@@ -3210,7 +3147,6 @@ int ubifs_debugging_init(struct ubifs_info *c)
 	if (!c->dbg)
 		return -ENOMEM;
 
-	failure_mode_init(c);
 	return 0;
 }
 
@@ -3220,7 +3156,6 @@ int ubifs_debugging_init(struct ubifs_info *c)
  */
 void ubifs_debugging_exit(struct ubifs_info *c)
 {
-	failure_mode_exit(c);
 	kfree(c->dbg);
 }