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authorLinus Torvalds <torvalds@linux-foundation.org>2010-04-20 09:39:40 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-04-20 09:39:40 -0700
commit05ce7bfe547c9fa967d9cab6c37867a9cb6fb3fa (patch)
treee1c4331ac8db1c28d3ea4c055353c783cf7f01ac
parentMerge branch 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6 (diff)
parentquota: Convert __DQUOT_PARANOIA symbol to standard config option (diff)
downloadlinux-dev-05ce7bfe547c9fa967d9cab6c37867a9cb6fb3fa.tar.xz
linux-dev-05ce7bfe547c9fa967d9cab6c37867a9cb6fb3fa.zip
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6: quota: Convert __DQUOT_PARANOIA symbol to standard config option
-rw-r--r--fs/quota/Kconfig8
-rw-r--r--fs/quota/dquot.c16
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