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quota: kill the vfs_dq_off and vfs_dq_quota_on_remount wrappers

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Instead of having wrappers in the VFS namespace export the dquot_suspend
and dquot_resume helpers directly.  Also rename vfs_quota_disable to
dquot_disable while we're at it.

[Jan Kara: Moved dquot_suspend to quotaops.h and made it inline]

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Christoph Hellwig
2010-05-19 07:16:41 -04:00
committed by Jan Kara
parent c79d967de3
commit 0f0dd62fdd
10 changed files with 86 additions and 91 deletions
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79
fs/quota/dquot.c
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@@ -1865,7 +1865,7 @@ EXPORT_SYMBOL(dquot_file_open);
/*
* Turn quota off on a device. type == -1 ==> quotaoff for all types (umount)
*/
int vfs_quota_disable(struct super_block *sb, int type, unsigned int flags)
int dquot_disable(struct super_block *sb, int type, unsigned int flags)
{
int cnt, ret = 0;
struct quota_info *dqopt = sb_dqopt(sb);
@@ -1995,14 +1995,16 @@ put_inodes:
}
return ret;
}
EXPORT_SYMBOL(vfs_quota_disable);
EXPORT_SYMBOL(dquot_disable);
int vfs_quota_off(struct super_block *sb, int type, int remount)
{
return vfs_quota_disable(sb, type, remount ? DQUOT_SUSPENDED :
(DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED));
BUG_ON(remount);
return dquot_disable(sb, type,
DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED);
}
EXPORT_SYMBOL(vfs_quota_off);
/*
* Turn quotas on on a device
*/
@@ -2120,34 +2122,41 @@ out_fmt:
}
/* Reenable quotas on remount RW */
static int vfs_quota_on_remount(struct super_block *sb, int type)
int dquot_resume(struct super_block *sb, int type)
{
struct quota_info *dqopt = sb_dqopt(sb);
struct inode *inode;
int ret;
int ret = 0, cnt;
unsigned int flags;
mutex_lock(&dqopt->dqonoff_mutex);
if (!sb_has_quota_suspended(sb, type)) {
mutex_unlock(&dqopt->dqonoff_mutex);
return 0;
}
inode = dqopt->files[type];
dqopt->files[type] = NULL;
spin_lock(&dq_state_lock);
flags = dqopt->flags & dquot_state_flag(DQUOT_USAGE_ENABLED |
DQUOT_LIMITS_ENABLED, type);
dqopt->flags &= ~dquot_state_flag(DQUOT_STATE_FLAGS, type);
spin_unlock(&dq_state_lock);
mutex_unlock(&dqopt->dqonoff_mutex);
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
if (type != -1 && cnt != type)
continue;
flags = dquot_generic_flag(flags, type);
ret = vfs_load_quota_inode(inode, type, dqopt->info[type].dqi_fmt_id,
flags);
iput(inode);
mutex_lock(&dqopt->dqonoff_mutex);
if (!sb_has_quota_suspended(sb, cnt)) {
mutex_unlock(&dqopt->dqonoff_mutex);
continue;
}
inode = dqopt->files[cnt];
dqopt->files[cnt] = NULL;
spin_lock(&dq_state_lock);
flags = dqopt->flags & dquot_state_flag(DQUOT_USAGE_ENABLED |
DQUOT_LIMITS_ENABLED,
cnt);
dqopt->flags &= ~dquot_state_flag(DQUOT_STATE_FLAGS, cnt);
spin_unlock(&dq_state_lock);
mutex_unlock(&dqopt->dqonoff_mutex);
flags = dquot_generic_flag(flags, cnt);
ret = vfs_load_quota_inode(inode, cnt,
dqopt->info[cnt].dqi_fmt_id, flags);
iput(inode);
}
return ret;
}
EXPORT_SYMBOL(dquot_resume);
int vfs_quota_on_path(struct super_block *sb, int type, int format_id,
struct path *path)
@@ -2172,8 +2181,7 @@ int vfs_quota_on(struct super_block *sb, int type, int format_id, char *name,
struct path path;
int error;
if (remount)
return vfs_quota_on_remount(sb, type);
BUG_ON(remount);
error = kern_path(name, LOOKUP_FOLLOW, &path);
if (!error) {
@@ -2196,8 +2204,8 @@ int vfs_quota_enable(struct inode *inode, int type, int format_id,
struct quota_info *dqopt = sb_dqopt(sb);
/* Just unsuspend quotas? */
if (flags & DQUOT_SUSPENDED)
return vfs_quota_on_remount(sb, type);
BUG_ON(flags & DQUOT_SUSPENDED);
if (!flags)
return 0;
/* Just updating flags needed? */
@@ -2263,23 +2271,6 @@ out:
}
EXPORT_SYMBOL(vfs_quota_on_mount);
/* Wrapper to turn on quotas when remounting rw */
int vfs_dq_quota_on_remount(struct super_block *sb)
{
int cnt;
int ret = 0, err;
if (!sb->s_qcop || !sb->s_qcop->quota_on)
return -ENOSYS;
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
err = sb->s_qcop->quota_on(sb, cnt, 0, NULL, 1);
if (err < 0 && !ret)
ret = err;
}
return ret;
}
EXPORT_SYMBOL(vfs_dq_quota_on_remount);
static inline qsize_t qbtos(qsize_t blocks)
{
return blocks << QIF_DQBLKSIZE_BITS;