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Message-ID: <20070205180527.GA26951@lst.de>
Date: Mon, 5 Feb 2007 19:05:27 +0100
From: Christoph Hellwig <hch@....de>
To: jack@...e.cz
Cc: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] move remove_dquot_ref to dqout.c
Remove_dquot_ref can move to dqout.c instead of beeing in inode.c
under #ifdef CONFIG_QUOTA. Also clean the resulting code up
a tiny little bit by testing sb->dq_op earlier - it's constant
over a filesystems lifetime.
Signed-off-by: Christoph Hellwig <hch@....de>
Index: linux-2.6/fs/dquot.c
===================================================================
--- linux-2.6.orig/fs/dquot.c 2007-02-05 18:49:41.000000000 +0100
+++ linux-2.6/fs/dquot.c 2007-02-05 18:53:49.000000000 +0100
@@ -79,6 +79,7 @@
#include <linux/buffer_head.h>
#include <linux/capability.h>
#include <linux/quotaops.h>
+#include <linux/writeback.h> /* for inode_lock, oddly enough.. */
#include <asm/uaccess.h>
@@ -756,15 +757,30 @@
}
}
+static void remove_dquot_ref(struct super_block *sb, int type,
+ struct list_head *tofree_head)
+{
+ struct inode *inode;
+
+ spin_lock(&inode_lock);
+ list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
+ if (!IS_NOQUOTA(inode))
+ remove_inode_dquot_ref(inode, type, tofree_head);
+ }
+ spin_unlock(&inode_lock);
+}
+
/* Gather all references from inodes and drop them */
static void drop_dquot_ref(struct super_block *sb, int type)
{
LIST_HEAD(tofree_head);
- down_write(&sb_dqopt(sb)->dqptr_sem);
- remove_dquot_ref(sb, type, &tofree_head);
- up_write(&sb_dqopt(sb)->dqptr_sem);
- put_dquot_list(&tofree_head);
+ if (sb->dq_op) {
+ down_write(&sb_dqopt(sb)->dqptr_sem);
+ remove_dquot_ref(sb, type, &tofree_head);
+ up_write(&sb_dqopt(sb)->dqptr_sem);
+ put_dquot_list(&tofree_head);
+ }
}
static inline void dquot_incr_inodes(struct dquot *dquot, unsigned long number)
Index: linux-2.6/fs/inode.c
===================================================================
--- linux-2.6.orig/fs/inode.c 2007-02-05 18:49:41.000000000 +0100
+++ linux-2.6/fs/inode.c 2007-02-05 18:49:56.000000000 +0100
@@ -1252,33 +1252,6 @@
EXPORT_SYMBOL(inode_needs_sync);
-/*
- * Quota functions that want to walk the inode lists..
- */
-#ifdef CONFIG_QUOTA
-
-void remove_dquot_ref(struct super_block *sb, int type,
- struct list_head *tofree_head)
-{
- struct inode *inode;
-
- if (!sb->dq_op)
- return; /* nothing to do */
- spin_lock(&inode_lock); /* This lock is for inodes code */
-
- /*
- * We don't have to lock against quota code - test IS_QUOTAINIT is
- * just for speedup...
- */
- list_for_each_entry(inode, &sb->s_inodes, i_sb_list)
- if (!IS_NOQUOTA(inode))
- remove_inode_dquot_ref(inode, type, tofree_head);
-
- spin_unlock(&inode_lock);
-}
-
-#endif
-
int inode_wait(void *word)
{
schedule();
Index: linux-2.6/include/linux/fs.h
===================================================================
--- linux-2.6.orig/include/linux/fs.h 2007-02-05 18:51:48.000000000 +0100
+++ linux-2.6/include/linux/fs.h 2007-02-05 18:51:52.000000000 +0100
@@ -1681,7 +1681,6 @@
extern int __remove_suid(struct dentry *, int);
extern int should_remove_suid(struct dentry *);
extern int remove_suid(struct dentry *);
-extern void remove_dquot_ref(struct super_block *, int, struct list_head *);
extern void __insert_inode_hash(struct inode *, unsigned long hashval);
extern void remove_inode_hash(struct inode *);
-
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