Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux...

[net-next-2.6.git] / fs / quota / dquot.c

diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index 437d2ca2de973d1027109b038e895e31a68b3a63..ef72b1699429e856f711504cf7c818642926483a 100644 (file)
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -132,6 +132,22 @@ static __cacheline_aligned_in_smp DEFINE_SPINLOCK(dq_state_lock);
 __cacheline_aligned_in_smp DEFINE_SPINLOCK(dq_data_lock);
 EXPORT_SYMBOL(dq_data_lock);
 
+void __quota_error(struct super_block *sb, const char *func,
+                 const char *fmt, ...)
+{
+       va_list args;
+
+       if (printk_ratelimit()) {
+               va_start(args, fmt);
+               printk(KERN_ERR "Quota error (device %s): %s: ",
+                      sb->s_id, func);
+               vprintk(fmt, args);
+               printk("\n");
+               va_end(args);
+       }
+}
+EXPORT_SYMBOL(__quota_error);
+
 #if defined(CONFIG_QUOTA_DEBUG) || defined(CONFIG_PRINT_QUOTA_WARNING)
 static char *quotatypes[] = INITQFNAMES;
 #endif
@@ -705,11 +721,8 @@ void dqput(struct dquot *dquot)
                return;
 #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",
-                       dquot->dq_sb->s_id,
-                       quotatypes[dquot->dq_type],
-                       dquot->dq_id);
+               quota_error(dquot->dq_sb, "trying to free free dquot of %s %d",
+                           quotatypes[dquot->dq_type], dquot->dq_id);
                BUG();
        }
 #endif
@@ -732,9 +745,9 @@ we_slept:
                /* Commit dquot before releasing */
                ret = dquot->dq_sb->dq_op->write_dquot(dquot);
                if (ret < 0) {
-                       printk(KERN_ERR "VFS: cannot write quota structure on "
-                               "device %s (error %d). Quota may get out of "
-                               "sync!\n", dquot->dq_sb->s_id, ret);
+                       quota_error(dquot->dq_sb, "Can't write quota structure"
+                                   " (error %d). Quota may get out of sync!",
+                                   ret);
                        /*
                         * We clear dirty bit anyway, so that we avoid
                         * infinite loop here
@@ -914,9 +927,9 @@ static void add_dquot_ref(struct super_block *sb, int type)
 
 #ifdef CONFIG_QUOTA_DEBUG
        if (reserved) {
-               printk(KERN_WARNING "VFS (%s): Writes happened before quota"
-                       " was turned on thus quota information is probably "
-                       "inconsistent. Please run quotacheck(8).\n", sb->s_id);
+               quota_error(sb, "Writes happened before quota was turned on "
+                       "thus quota information is probably inconsistent. "
+                       "Please run quotacheck(8)");
        }
 #endif
 }
@@ -947,7 +960,9 @@ static int remove_inode_dquot_ref(struct inode *inode, int type,
                if (dqput_blocks(dquot)) {
 #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));
+                               quota_error(inode->i_sb, "Adding dquot with "
+                                           "dq_count %d to dispose list",
+                                           atomic_read(&dquot->dq_count));
 #endif
                        spin_lock(&dq_list_lock);
                        /* As dquot must have currently users it can't be on
@@ -986,6 +1001,7 @@ static void remove_dquot_ref(struct super_block *sb, int type,
                struct list_head *tofree_head)
 {
        struct inode *inode;
+       int reserved = 0;
 
        spin_lock(&inode_lock);
        list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
@@ -995,10 +1011,20 @@ static void remove_dquot_ref(struct super_block *sb, int type,
                 *  only quota pointers and these have separate locking
                 *  (dqptr_sem).
                 */
-               if (!IS_NOQUOTA(inode))
+               if (!IS_NOQUOTA(inode)) {
+                       if (unlikely(inode_get_rsv_space(inode) > 0))
+                               reserved = 1;
                        remove_inode_dquot_ref(inode, type, tofree_head);
+               }
        }
        spin_unlock(&inode_lock);
+#ifdef CONFIG_QUOTA_DEBUG
+       if (reserved) {
+               printk(KERN_WARNING "VFS (%s): Writes happened after quota"
+                       " was disabled thus quota information is probably "
+                       "inconsistent. Please run quotacheck(8).\n", sb->s_id);
+       }
+#endif
 }
 
 /* Gather all references from inodes and drop them */
@@ -1304,6 +1330,15 @@ static int info_bdq_free(struct dquot *dquot, qsize_t space)
        return QUOTA_NL_NOWARN;
 }
 
+static int dquot_active(const struct inode *inode)
+{
+       struct super_block *sb = inode->i_sb;
+
+       if (IS_NOQUOTA(inode))
+               return 0;
+       return sb_any_quota_loaded(sb) & ~sb_any_quota_suspended(sb);
+}
+
 /*
  * Initialize quota pointers in inode
  *
@@ -1323,7 +1358,7 @@ static void __dquot_initialize(struct inode *inode, int type)
 
        /* First test before acquiring mutex - solves deadlocks when we
          * re-enter the quota code and are already holding the mutex */
-       if (!sb_any_quota_active(inode->i_sb) || IS_NOQUOTA(inode))
+       if (!dquot_active(inode))
                return;
 
        /* First get references to structures we might need. */
@@ -1507,7 +1542,7 @@ int __dquot_alloc_space(struct inode *inode, qsize_t number, int flags)
         * First test before acquiring mutex - solves deadlocks when we
         * re-enter the quota code and are already holding the mutex
         */
-       if (!sb_any_quota_active(inode->i_sb) || IS_NOQUOTA(inode)) {
+       if (!dquot_active(inode)) {
                inode_incr_space(inode, number, reserve);
                goto out;
        }
@@ -1559,7 +1594,7 @@ int dquot_alloc_inode(const struct inode *inode)
 
        /* First test before acquiring mutex - solves deadlocks when we
          * re-enter the quota code and are already holding the mutex */
-       if (!sb_any_quota_active(inode->i_sb) || IS_NOQUOTA(inode))
+       if (!dquot_active(inode))
                return 0;
        for (cnt = 0; cnt < MAXQUOTAS; cnt++)
                warntype[cnt] = QUOTA_NL_NOWARN;
@@ -1596,7 +1631,7 @@ int dquot_claim_space_nodirty(struct inode *inode, qsize_t number)
 {
        int cnt;
 
-       if (!sb_any_quota_active(inode->i_sb) || IS_NOQUOTA(inode)) {
+       if (!dquot_active(inode)) {
                inode_claim_rsv_space(inode, number);
                return 0;
        }
@@ -1629,7 +1664,7 @@ void __dquot_free_space(struct inode *inode, qsize_t number, int flags)
 
        /* First test before acquiring mutex - solves deadlocks when we
          * re-enter the quota code and are already holding the mutex */
-       if (!sb_any_quota_active(inode->i_sb) || IS_NOQUOTA(inode)) {
+       if (!dquot_active(inode)) {
                inode_decr_space(inode, number, reserve);
                return;
        }
@@ -1667,7 +1702,7 @@ void dquot_free_inode(const struct inode *inode)
 
        /* First test before acquiring mutex - solves deadlocks when we
          * re-enter the quota code and are already holding the mutex */
-       if (!sb_any_quota_active(inode->i_sb) || IS_NOQUOTA(inode))
+       if (!dquot_active(inode))
                return;
 
        down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
@@ -1790,7 +1825,7 @@ int dquot_transfer(struct inode *inode, struct iattr *iattr)
        struct super_block *sb = inode->i_sb;
        int ret;
 
-       if (!sb_any_quota_active(sb) || IS_NOQUOTA(inode))
+       if (!dquot_active(inode))
                return 0;
 
        if (iattr->ia_valid & ATTR_UID && iattr->ia_uid != inode->i_uid)
@@ -1957,7 +1992,7 @@ int dquot_disable(struct super_block *sb, int type, unsigned int flags)
                                truncate_inode_pages(&toputinode[cnt]->i_data,
                                                     0);
                                mutex_unlock(&toputinode[cnt]->i_mutex);
-                               mark_inode_dirty(toputinode[cnt]);
+                               mark_inode_dirty_sync(toputinode[cnt]);
                        }
                        mutex_unlock(&dqopt->dqonoff_mutex);
                }
@@ -2270,7 +2305,7 @@ static void do_get_dqblk(struct dquot *dquot, struct fs_disk_quota *di)
        memset(di, 0, sizeof(*di));
        di->d_version = FS_DQUOT_VERSION;
        di->d_flags = dquot->dq_type == USRQUOTA ?
-                       XFS_USER_QUOTA : XFS_GROUP_QUOTA;
+                       FS_USER_QUOTA : FS_GROUP_QUOTA;
        di->d_id = dquot->dq_id;
 
        spin_lock(&dq_data_lock);