quota: Convert __DQUOT_PARANOIA symbol to standard config option

Make __DQUOT_PARANOIA define from the old days a standard config option
and turn it off by default.

This gets rid of a quota warning about writes before quota is turned on
for systems with ext4 root filesystem. Currently there's no way to legally
solve this because /etc/mtab has to be written before quota is turned on
on most systems.

Signed-off-by: Jan Kara <jack@suse.cz>

2 files changed, 15 insertions, 9 deletions

diff --git a/fs/quota/Kconfig b/fs/quota/Kconfig
index dad7fb247ddc..3e21b1e2ad3a 100644
--- a/fs/quota/Kconfig
+++ b/fs/quota/Kconfig
@@ -33,6 +33,14 @@ config PRINT_QUOTA_WARNING
           Note that this behavior is currently deprecated and may go away in
           future. Please use notification via netlink socket instead.
 
+config QUOTA_DEBUG
+        bool "Additional quota sanity checks"
+        depends on QUOTA
+        default n
+        help
+          If you say Y here, quota subsystem will perform some additional
+          sanity checks of quota internal structures. If unsure, say N.
+
 # Generic support for tree structured quota files. Selected when needed.
 config QUOTA_TREE
          tristate
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index a0a9405b202a..788b5802a7ce 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -80,8 +80,6 @@
 
 #include <asm/uaccess.h>
 
-#define __DQUOT_PARANOIA
-
 /*
  * There are three quota SMP locks. dq_list_lock protects all lists with quotas
  * and quota formats, dqstats structure containing statistics about the lists
@@ -695,7 +693,7 @@ void dqput(struct dquot *dquot)
 
         if (!dquot)
                 return;
-#ifdef __DQUOT_PARANOIA
+#ifdef CONFIG_QUOTA_DEBUG
         if (!atomic_read(&dquot->dq_count)) {
                 printk("VFS: dqput: trying to free free dquot\n");
                 printk("VFS: device %s, dquot of %s %d\n",
@@ -748,7 +746,7 @@ we_slept:
                 goto we_slept;
         }
         atomic_dec(&dquot->dq_count);
-#ifdef __DQUOT_PARANOIA
+#ifdef CONFIG_QUOTA_DEBUG
         /* sanity check */
         BUG_ON(!list_empty(&dquot->dq_free));
 #endif
@@ -845,7 +843,7 @@ we_slept:
                 dquot = NULL;
                 goto out;
         }
-#ifdef __DQUOT_PARANOIA
+#ifdef CONFIG_QUOTA_DEBUG
         BUG_ON(!dquot->dq_sb);  /* Has somebody invalidated entry under us? */
 #endif
 out:
@@ -874,7 +872,7 @@ static int dqinit_needed(struct inode *inode, int type)
 static void add_dquot_ref(struct super_block *sb, int type)
 {
         struct inode *inode, *old_inode = NULL;
-#ifdef __DQUOT_PARANOIA
+#ifdef CONFIG_QUOTA_DEBUG
         int reserved = 0;
 #endif
 
@@ -882,7 +880,7 @@ static void add_dquot_ref(struct super_block *sb, int type)
         list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
                 if (inode->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE|I_NEW))
                         continue;
-#ifdef __DQUOT_PARANOIA
+#ifdef CONFIG_QUOTA_DEBUG
                 if (unlikely(inode_get_rsv_space(inode) > 0))
                         reserved = 1;
 #endif
@@ -907,7 +905,7 @@ static void add_dquot_ref(struct super_block *sb, int type)
         spin_unlock(&inode_lock);
         iput(old_inode);
 
-#ifdef __DQUOT_PARANOIA
+#ifdef CONFIG_QUOTA_DEBUG
         if (reserved) {
                 printk(KERN_WARNING "VFS (%s): Writes happened before quota"
                         " was turned on thus quota information is probably "
@@ -940,7 +938,7 @@ static int remove_inode_dquot_ref(struct inode *inode, int type,
         inode->i_dquot[type] = NULL;
         if (dquot) {
                 if (dqput_blocks(dquot)) {
-#ifdef __DQUOT_PARANOIA
+#ifdef CONFIG_QUOTA_DEBUG
                         if (atomic_read(&dquot->dq_count) != 1)
                                 printk(KERN_WARNING "VFS: Adding dquot with dq_count %d to dispose list.\n", atomic_read(&dquot->dq_count));
 #endif