UBIFS: introduce helper functions for debugging checks and tests

This patch introduces helper functions for all debugging checks, so instead of
doing

if (!(ubifs_chk_flags & UBIFS_CHK_GEN))

we now do

if (!dbg_is_chk_gen(c))

This is a preparation to further changes where the flags will go away, and
we'll need to only change the helper functions, but the code which utilizes
them won't be touched.

At the same time this patch removes 'dbg_force_in_the_gaps()',
'dbg_force_in_the_gaps_enabled()', and dbg_failure_mode helpers for
consistency.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

1 files changed, 11 insertions, 19 deletions

diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index 7adf9fe9181..79d8924aca5 100644
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -330,7 +330,7 @@ void dbg_dump_node(const struct ubifs_info *c, const void *node)
 	union ubifs_key key;
 	const struct ubifs_ch *ch = node;
 
-	if (dbg_failure_mode)
+	if (dbg_is_tst_rcvry(c))
 		return;
 
 	/* If the magic is incorrect, just hexdump the first bytes */
@@ -886,7 +886,7 @@ void dbg_dump_leb(const struct ubifs_info *c, int lnum)
 	struct ubifs_scan_node *snod;
 	void *buf;
 
-	if (dbg_failure_mode)
+	if (dbg_is_tst_rcvry(c))
 		return;
 
 	printk(KERN_DEBUG "(pid %d) start dumping LEB %d\n",
@@ -1145,7 +1145,7 @@ int dbg_check_synced_i_size(const struct ubifs_info *c, struct inode *inode)
 	int err = 0;
 	struct ubifs_inode *ui = ubifs_inode(inode);
 
-	if (!(ubifs_chk_flags & UBIFS_CHK_GEN))
+	if (!dbg_is_chk_gen(c))
 		return 0;
 	if (!S_ISREG(inode->i_mode))
 		return 0;
@@ -1186,7 +1186,7 @@ int dbg_check_dir(struct ubifs_info *c, const struct inode *dir)
 	struct qstr nm = { .name = NULL };
 	loff_t size = UBIFS_INO_NODE_SZ;
 
-	if (!(ubifs_chk_flags & UBIFS_CHK_GEN))
+	if (!dbg_is_chk_gen(c))
 		return 0;
 
 	if (!S_ISDIR(dir->i_mode))
@@ -1544,7 +1544,7 @@ int dbg_check_tnc(struct ubifs_info *c, int extra)
 	long clean_cnt = 0, dirty_cnt = 0;
 	int err, last;
 
-	if (!(ubifs_chk_flags & UBIFS_CHK_TNC))
+	if (!dbg_is_chk_tnc(c))
 		return 0;
 
 	ubifs_assert(mutex_is_locked(&c->tnc_mutex));
@@ -1791,7 +1791,7 @@ int dbg_check_idx_size(struct ubifs_info *c, long long idx_size)
 	int err;
 	long long calc = 0;
 
-	if (!(ubifs_chk_flags & UBIFS_CHK_IDX_SZ))
+	if (!dbg_is_chk_idx_sz(c))
 		return 0;
 
 	err = dbg_walk_index(c, NULL, add_size, &calc);
@@ -2367,7 +2367,7 @@ int dbg_check_filesystem(struct ubifs_info *c)
 	int err;
 	struct fsck_data fsckd;
 
-	if (!(ubifs_chk_flags & UBIFS_CHK_FS))
+	if (!dbg_is_chk_fs(c))
 		return 0;
 
 	fsckd.inodes = RB_ROOT;
@@ -2402,7 +2402,7 @@ int dbg_check_data_nodes_order(struct ubifs_info *c, struct list_head *head)
 	struct list_head *cur;
 	struct ubifs_scan_node *sa, *sb;
 
-	if (!(ubifs_chk_flags & UBIFS_CHK_GEN))
+	if (!dbg_is_chk_gen(c))
 		return 0;
 
 	for (cur = head->next; cur->next != head; cur = cur->next) {
@@ -2469,7 +2469,7 @@ int dbg_check_nondata_nodes_order(struct ubifs_info *c, struct list_head *head)
 	struct list_head *cur;
 	struct ubifs_scan_node *sa, *sb;
 
-	if (!(ubifs_chk_flags & UBIFS_CHK_GEN))
+	if (!dbg_is_chk_gen(c))
 		return 0;
 
 	for (cur = head->next; cur->next != head; cur = cur->next) {
@@ -2546,14 +2546,6 @@ error_dump:
 	return 0;
 }
 
-int dbg_force_in_the_gaps(void)
-{
-	if (!(ubifs_chk_flags & UBIFS_CHK_GEN))
-		return 0;
-
-	return !(random32() & 7);
-}
-
 /* Failure mode for recovery testing */
 
 #define chance(n, d) (simple_rand() <= (n) * 32768LL / (d))
@@ -2624,7 +2616,7 @@ static int in_failure_mode(struct ubi_volume_desc *desc)
 {
 	struct ubifs_info *c = dbg_find_info(desc);
 
-	if (c && dbg_failure_mode)
+	if (c && dbg_is_tst_rcvry(c))
 		return c->dbg->failure_mode;
 	return 0;
 }
@@ -2634,7 +2626,7 @@ 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_failure_mode)
+	if (!c || !dbg_is_tst_rcvry(c))
 		return 0;
 	d = c->dbg;
 	if (d->failure_mode)