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>
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index 2857fd6..2eebf72 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -1315,6 +1315,15 @@
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 @@
/* 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 @@
* 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 @@
/* 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 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 @@
/* 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 @@
/* 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 @@
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)