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[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@lst.de>
Cc: Jan Kara <jack@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Hellwig 2007-02-12 00:51:57 -08:00 committed by Linus Torvalds
parent ea6f3281a1
commit fb58b7316a
3 changed files with 20 additions and 32 deletions
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24
fs/dquot.c
View File

@ -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>
@ -755,15 +756,30 @@ static void put_dquot_list(struct list_head *tofree_head)
}
}
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)

27
fs/inode.c
View File

@ -1251,33 +1251,6 @@ int inode_needs_sync(struct inode *inode)
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();

1
include/linux/fs.h
View File

@ -1688,7 +1688,6 @@ extern struct inode *new_inode(struct super_block *);
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 *);