mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

quota: kill the vfs_dq_off and vfs_dq_quota_on_remount wrappers 

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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
fs/ext2/super.c
View File

@ -1250,9 +1250,8 @@ static int ext2_remount (struct super_block * sb, int * flags, char * data)
es->s_mtime = cpu_to_le32(get_seconds());
spin_unlock(&sbi->s_lock);
err = vfs_dq_off(sb, 1);
if (err < 0 && err != -ENOSYS) {
err = -EBUSY;
err = dquot_suspend(sb, -1);
if (err < 0) {
spin_lock(&sbi->s_lock);
goto restore_opts;
}
@ -1281,7 +1280,7 @@ static int ext2_remount (struct super_block * sb, int * flags, char * data)
ext2_write_super(sb);
vfs_dq_quota_on_remount(sb);
dquot_resume(sb, -1);
}
return 0;

8
fs/ext3/super.c
View File

@ -2598,11 +2598,9 @@ static int ext3_remount (struct super_block * sb, int * flags, char * data)
}
if (*flags & MS_RDONLY) {
err = vfs_dq_off(sb, 1);
if (err < 0 && err != -ENOSYS) {
err = -EBUSY;
err = dquot_suspend(sb, -1);
if (err < 0)
goto restore_opts;
}
/*
* First of all, the unconditional stuff we have to do
@ -2672,7 +2670,7 @@ static int ext3_remount (struct super_block * sb, int * flags, char * data)
unlock_kernel();
if (enable_quota)
vfs_dq_quota_on_remount(sb);
dquot_resume(sb, -1);
return 0;
restore_opts:
sb->s_flags = old_sb_flags;

8
fs/ext4/super.c
View File

@ -3631,11 +3631,9 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
}
if (*flags & MS_RDONLY) {
err = vfs_dq_off(sb, 1);
if (err < 0 && err != -ENOSYS) {
err = -EBUSY;
err = dquot_suspend(sb, -1);
if (err < 0)
goto restore_opts;
}
/*
* First of all, the unconditional stuff we have to do
@ -3722,7 +3720,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
unlock_super(sb);
unlock_kernel();
if (enable_quota)
vfs_dq_quota_on_remount(sb);
dquot_resume(sb, -1);
return 0;
restore_opts:

8
fs/jfs/super.c
View File

@ -401,14 +401,14 @@ static int jfs_remount(struct super_block *sb, int *flags, char *data)
sb->s_flags &= ~MS_RDONLY;
unlock_kernel();
vfs_dq_quota_on_remount(sb);
dquot_resume(sb, -1);
return ret;
}
if ((!(sb->s_flags & MS_RDONLY)) && (*flags & MS_RDONLY)) {
rc = vfs_dq_off(sb, 1);
if (rc < 0 && rc != -ENOSYS) {
rc = dquot_suspend(sb, -1);
if (rc < 0) {
unlock_kernel();
return -EBUSY;
return rc;
}
rc = jfs_umount_rw(sb);
JFS_SBI(sb)->flag = flag;

14
fs/ocfs2/super.c
View File

@ -879,18 +879,14 @@ static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend)
if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
continue;
if (unsuspend)
status = vfs_quota_enable(
sb_dqopt(sb)->files[type],
type, QFMT_OCFS2,
DQUOT_SUSPENDED);
status = dquot_resume(sb, type);
else {
struct ocfs2_mem_dqinfo *oinfo;
/* Cancel periodic syncing before suspending */
oinfo = sb_dqinfo(sb, type)->dqi_priv;
cancel_delayed_work_sync(&oinfo->dqi_sync_work);
status = vfs_quota_disable(sb, type,
DQUOT_SUSPENDED);
status = dquot_suspend(sb, type);
}
if (status < 0)
break;
@ -958,8 +954,8 @@ static void ocfs2_disable_quotas(struct ocfs2_super *osb)
/* Turn off quotas. This will remove all dquot structures from
* memory and so they will be automatically synced to global
* quota files */
vfs_quota_disable(sb, type, DQUOT_USAGE_ENABLED |
DQUOT_LIMITS_ENABLED);
dquot_disable(sb, type, DQUOT_USAGE_ENABLED |
DQUOT_LIMITS_ENABLED);
if (!inode)
continue;
iput(inode);
@ -989,7 +985,7 @@ static int ocfs2_quota_off(struct super_block *sb, int type, int remount)
if (remount)
return 0; /* Ignore now and handle later in
* ocfs2_remount() */
return vfs_quota_disable(sb, type, DQUOT_LIMITS_ENABLED);
return dquot_disable(sb, type, DQUOT_LIMITS_ENABLED);
}
static const struct quotactl_ops ocfs2_quotactl_ops = {

79
fs/quota/dquot.c
View File

@ -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;

8
fs/reiserfs/super.c
View File

@ -1243,11 +1243,9 @@ static int reiserfs_remount(struct super_block *s, int *mount_flags, char *arg)
/* it is read-only already */
goto out_ok;
err = vfs_dq_off(s, 1);
if (err < 0 && err != -ENOSYS) {
err = -EBUSY;
err = dquot_suspend(s, -1);
if (err < 0)
goto out_err;
}
/* try to remount file system with read-only permissions */
if (sb_umount_state(rs) == REISERFS_VALID_FS
@ -1302,7 +1300,7 @@ static int reiserfs_remount(struct super_block *s, int *mount_flags, char *arg)
s->s_dirt = 0;
if (!(*mount_flags & MS_RDONLY)) {
vfs_dq_quota_on_remount(s);
dquot_resume(s, -1);
finish_unfinished(s);
reiserfs_xattr_init(s, *mount_flags);
}

6
fs/udf/super.c
View File

@ -590,15 +590,13 @@ static int udf_remount_fs(struct super_block *sb, int *flags, char *options)
if (*flags & MS_RDONLY) {
udf_close_lvid(sb);
error = vfs_dq_off(sb, 1);
if (error < 0 && error != -ENOSYS)
error = -EBUSY;
error = dquot_suspend(sb, -1);
} else {
udf_open_lvid(sb);
/* mark the fs r/w for quota activity */
sb->s_flags &= ~MS_RDONLY;
vfs_dq_quota_on_remount(sb);
dquot_resume(sb, -1);
}
out_unlock:

8
fs/ufs/super.c
View File

@ -1291,11 +1291,11 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
* fs was mouted as rw, remounting ro
*/
if (*mount_flags & MS_RDONLY) {
err = vfs_dq_off(sb, 1);
if (err < 0 && err != -ENOSYS) {
err = dquot_suspend(sb, -1);
if (err < 0) {
unlock_super(sb);
unlock_kernel();
return -EBUSY;
return err;
}
ufs_put_super_internal(sb);
@ -1343,7 +1343,7 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
unlock_super(sb);
unlock_kernel();
if (enable_quota)
vfs_dq_quota_on_remount(sb);
dquot_resume(sb, -1);
return 0;
}

31
include/linux/quotaops.h
View File

@ -50,6 +50,14 @@ int dquot_alloc_inode(const struct inode *inode);
int dquot_claim_space_nodirty(struct inode *inode, qsize_t number);
void dquot_free_inode(const struct inode *inode);
int dquot_disable(struct super_block *sb, int type, unsigned int flags);
/* Suspend quotas on remount RO */
static inline int dquot_suspend(struct super_block *sb, int type)
{
return dquot_disable(sb, type, DQUOT_SUSPENDED);
}
int dquot_resume(struct super_block *sb, int type);
int dquot_commit(struct dquot *dquot);
int dquot_acquire(struct dquot *dquot);
int dquot_release(struct dquot *dquot);
@ -67,7 +75,6 @@ int vfs_quota_on_path(struct super_block *sb, int type, int format_id,
int vfs_quota_on_mount(struct super_block *sb, char *qf_name,
int format_id, int type);
int vfs_quota_off(struct super_block *sb, int type, int remount);
int vfs_quota_disable(struct super_block *sb, int type, unsigned int flags);
int vfs_quota_sync(struct super_block *sb, int type, int wait);
int vfs_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii);
int vfs_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii);
@ -78,7 +85,6 @@ int vfs_set_dqblk(struct super_block *sb, int type, qid_t id,
int __dquot_transfer(struct inode *inode, struct dquot **transfer_to);
int dquot_transfer(struct inode *inode, struct iattr *iattr);
int vfs_dq_quota_on_remount(struct super_block *sb);
static inline struct mem_dqinfo *sb_dqinfo(struct super_block *sb, int type)
{
@ -231,11 +237,6 @@ static inline int vfs_dq_off(struct super_block *sb, int remount)
return 0;
}
static inline int vfs_dq_quota_on_remount(struct super_block *sb)
{
return 0;
}
static inline int dquot_transfer(struct inode *inode, struct iattr *iattr)
{
return 0;
@ -262,6 +263,22 @@ static inline int dquot_claim_space_nodirty(struct inode *inode, qsize_t number)
return 0;
}
static inline int dquot_disable(struct super_block *sb, int type,
unsigned int flags)
{
return 0;
}
static inline int dquot_suspend(struct super_block *sb, int type)
{
return 0;
}
static inline int dquot_resume(struct super_block *sb, int type)
{
return 0;
}
#define dquot_file_open generic_file_open
#endif /* CONFIG_QUOTA */