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quota: clean up quota active checks 

The various quota operations check for any quota beeing active on
a superblock, and the inode not having the noquota flag.

Merge these two checks into a dquot_active check and move that
into dquot.c as that's the only place where it's needed.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Christoph Hellwig 2010-06-04 10:56:29 +02:00 committed by Jan Kara
parent ade7ce31c2
commit 189eef59e7
2 changed files with 16 additions and 17 deletions
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23
fs/quota/dquot.c
View File

@ -1315,6 +1315,15 @@ 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
*
@ -1334,7 +1343,7 @@ 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. */
@ -1518,7 +1527,7 @@ 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;
}
@ -1570,7 +1579,7 @@ 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;
@ -1607,7 +1616,7 @@ 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;
}
@ -1640,7 +1649,7 @@ 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;
}
@ -1678,7 +1687,7 @@ 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);
@ -1801,7 +1810,7 @@ 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)

10
include/linux/quotaops.h
View File

@ -145,11 +145,6 @@ static inline bool sb_has_quota_active(struct super_block *sb, int type)
!sb_has_quota_suspended(sb, type);
}
static inline unsigned sb_any_quota_active(struct super_block *sb)
{
return sb_any_quota_loaded(sb) & ~sb_any_quota_suspended(sb);
}
/*
* Operations supported for diskquotas.
*/
@ -194,11 +189,6 @@ static inline int sb_has_quota_active(struct super_block *sb, int type)
return 0;
}
static inline int sb_any_quota_active(struct super_block *sb)
{
return 0;
}
static inline void dquot_initialize(struct inode *inode)
{
}