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dquot: cleanup inode allocation / freeing routines

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Get rid of the alloc_inode and free_inode dquot operations - they are
always called from the filesystem and if a filesystem really needs
their own (which none currently does) it can just call into it's
own routine directly.

Also get rid of the vfs_dq_alloc/vfs_dq_free wrappers and always
call the lowlevel dquot_alloc_inode / dqout_free_inode routines
directly, which now lose the number argument which is always 1.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Christoph Hellwig 2010-03-03 09:05:01 -05:00 committed by Jan Kara
parent 5dd4056db8
commit 63936ddaa1
18 changed files with 61 additions and 107 deletions
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8
Documentation/filesystems/Locking
View file

@ -462,8 +462,6 @@ in sys_read() and friends.
prototypes:
int (*initialize) (struct inode *, int);
int (*drop) (struct inode *);
int (*alloc_inode) (const struct inode *, unsigned long);
int (*free_inode) (const struct inode *, unsigned long);
int (*transfer) (struct inode *, struct iattr *);
int (*write_dquot) (struct dquot *);
int (*acquire_dquot) (struct dquot *);
@ -479,8 +477,6 @@ What filesystem should expect from the generic quota functions:
FS recursion Held locks when called
initialize: yes maybe dqonoff_sem
drop: yes -
alloc_inode: ->mark_dirty() -
free_inode: ->mark_dirty() -
transfer: yes -
write_dquot: yes dqonoff_sem or dqptr_sem
acquire_dquot: yes dqonoff_sem or dqptr_sem
@ -491,10 +487,6 @@ write_info: yes dqonoff_sem
FS recursion means calling ->quota_read() and ->quota_write() from superblock
operations.
->alloc_inode(), ->free_inode() are called
only directly by the filesystem and do not call any fs functions only
the ->mark_dirty() operation.
More details about quota locking can be found in fs/dquot.c.
--------------------------- vm_operations_struct -----------------------------

10
fs/ext2/ialloc.c
View file

@ -121,7 +121,7 @@ void ext2_free_inode (struct inode * inode)
if (!is_bad_inode(inode)) {
/* Quota is already initialized in iput() */
ext2_xattr_delete_inode(inode);
vfs_dq_free_inode(inode);
dquot_free_inode(inode);
vfs_dq_drop(inode);
}
@ -586,10 +586,10 @@ struct inode *ext2_new_inode(struct inode *dir, int mode)
goto fail_drop;
}
if (vfs_dq_alloc_inode(inode)) {
err = -EDQUOT;
vfs_dq_init(inode);
err = dquot_alloc_inode(inode);
if (err)
goto fail_drop;
}
err = ext2_init_acl(inode, dir);
if (err)
@ -605,7 +605,7 @@ struct inode *ext2_new_inode(struct inode *dir, int mode)
return inode;
fail_free_drop:
vfs_dq_free_inode(inode);
dquot_free_inode(inode);
fail_drop:
vfs_dq_drop(inode);

10
fs/ext3/ialloc.c
View file

@ -125,7 +125,7 @@ void ext3_free_inode (handle_t *handle, struct inode * inode)
*/
vfs_dq_init(inode);
ext3_xattr_delete_inode(handle, inode);
vfs_dq_free_inode(inode);
dquot_free_inode(inode);
vfs_dq_drop(inode);
is_directory = S_ISDIR(inode->i_mode);
@ -588,10 +588,10 @@ struct inode *ext3_new_inode(handle_t *handle, struct inode * dir, int mode)
sizeof(struct ext3_inode) - EXT3_GOOD_OLD_INODE_SIZE : 0;
ret = inode;
if (vfs_dq_alloc_inode(inode)) {
err = -EDQUOT;
vfs_dq_init(inode);
err = dquot_alloc_inode(inode);
if (err)
goto fail_drop;
}
err = ext3_init_acl(handle, inode, dir);
if (err)
@ -619,7 +619,7 @@ struct inode *ext3_new_inode(handle_t *handle, struct inode * dir, int mode)
return ret;
fail_free_drop:
vfs_dq_free_inode(inode);
dquot_free_inode(inode);
fail_drop:
vfs_dq_drop(inode);

2
fs/ext3/super.c
View file

@ -752,8 +752,6 @@ static ssize_t ext3_quota_write(struct super_block *sb, int type,
static const struct dquot_operations ext3_quota_operations = {
.initialize = dquot_initialize,
.drop = dquot_drop,
.alloc_inode = dquot_alloc_inode,
.free_inode = dquot_free_inode,
.transfer = dquot_transfer,
.write_dquot = ext3_write_dquot,
.acquire_dquot = ext3_acquire_dquot,

10
fs/ext4/ialloc.c
View file

@ -219,7 +219,7 @@ void ext4_free_inode(handle_t *handle, struct inode *inode)
*/
vfs_dq_init(inode);
ext4_xattr_delete_inode(handle, inode);
vfs_dq_free_inode(inode);
dquot_free_inode(inode);
vfs_dq_drop(inode);
is_directory = S_ISDIR(inode->i_mode);
@ -1034,10 +1034,10 @@ struct inode *ext4_new_inode(handle_t *handle, struct inode *dir, int mode,
ei->i_extra_isize = EXT4_SB(sb)->s_want_extra_isize;
ret = inode;
if (vfs_dq_alloc_inode(inode)) {
err = -EDQUOT;
vfs_dq_init(inode);
err = dquot_alloc_inode(inode);
if (err)
goto fail_drop;
}
err = ext4_init_acl(handle, inode, dir);
if (err)
@ -1074,7 +1074,7 @@ struct inode *ext4_new_inode(handle_t *handle, struct inode *dir, int mode,
return ret;
fail_free_drop:
vfs_dq_free_inode(inode);
dquot_free_inode(inode);
fail_drop:
vfs_dq_drop(inode);

2
fs/ext4/super.c
View file

@ -1017,8 +1017,6 @@ static const struct dquot_operations ext4_quota_operations = {
#ifdef CONFIG_QUOTA
.get_reserved_space = ext4_get_reserved_space,
#endif
.alloc_inode = dquot_alloc_inode,
.free_inode = dquot_free_inode,
.transfer = dquot_transfer,
.write_dquot = ext4_write_dquot,
.acquire_dquot = ext4_acquire_dquot,

2
fs/jfs/inode.c
View file

@ -159,7 +159,7 @@ void jfs_delete_inode(struct inode *inode)
* Free the inode from the quota allocation.
*/
vfs_dq_init(inode);
vfs_dq_free_inode(inode);
dquot_free_inode(inode);
vfs_dq_drop(inode);
}

6
fs/jfs/jfs_inode.c
View file

@ -116,10 +116,10 @@ struct inode *ialloc(struct inode *parent, umode_t mode)
/*
* Allocate inode to quota.
*/
if (vfs_dq_alloc_inode(inode)) {
rc = -EDQUOT;
vfs_dq_init(inode);
rc = dquot_alloc_inode(inode);
if (rc)
goto fail_drop;
}
inode->i_mode = mode;
/* inherit flags from parent */

2
fs/ocfs2/inode.c
View file

@ -665,7 +665,7 @@ static int ocfs2_remove_inode(struct inode *inode,
}
ocfs2_remove_from_cache(INODE_CACHE(inode), di_bh);
vfs_dq_free_inode(inode);
dquot_free_inode(inode);
status = ocfs2_free_dinode(handle, inode_alloc_inode,
inode_alloc_bh, di);

30
fs/ocfs2/namei.c
View file

@ -348,13 +348,9 @@ static int ocfs2_mknod(struct inode *dir,
goto leave;
}
/* We don't use standard VFS wrapper because we don't want vfs_dq_init
* to be called. */
if (sb_any_quota_active(osb->sb) &&
osb->sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA) {
status = -EDQUOT;
status = dquot_alloc_inode(inode);
if (status)
goto leave;
}
did_quota_inode = 1;
mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry,
@ -431,7 +427,7 @@ static int ocfs2_mknod(struct inode *dir,
status = 0;
leave:
if (status < 0 && did_quota_inode)
vfs_dq_free_inode(inode);
dquot_free_inode(inode);
if (handle)
ocfs2_commit_trans(osb, handle);
@ -1688,13 +1684,9 @@ static int ocfs2_symlink(struct inode *dir,
goto bail;
}
/* We don't use standard VFS wrapper because we don't want vfs_dq_init
* to be called. */
if (sb_any_quota_active(osb->sb) &&
osb->sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA) {
status = -EDQUOT;
status = dquot_alloc_inode(inode);
if (status)
goto bail;
}
did_quota_inode = 1;
mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry,
@ -1790,7 +1782,7 @@ static int ocfs2_symlink(struct inode *dir,
dquot_free_space_nodirty(inode,
ocfs2_clusters_to_bytes(osb->sb, 1));
if (status < 0 && did_quota_inode)
vfs_dq_free_inode(inode);
dquot_free_inode(inode);
if (handle)
ocfs2_commit_trans(osb, handle);
@ -2098,13 +2090,9 @@ int ocfs2_create_inode_in_orphan(struct inode *dir,
goto leave;
}
/* We don't use standard VFS wrapper because we don't want vfs_dq_init
* to be called. */
if (sb_any_quota_active(osb->sb) &&
osb->sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA) {
status = -EDQUOT;
status = dquot_alloc_inode(inode);
if (status)
goto leave;
}
did_quota_inode = 1;
inode->i_nlink = 0;
@ -2139,7 +2127,7 @@ int ocfs2_create_inode_in_orphan(struct inode *dir,
insert_inode_hash(inode);
leave:
if (status < 0 && did_quota_inode)
vfs_dq_free_inode(inode);
dquot_free_inode(inode);
if (handle)
ocfs2_commit_trans(osb, handle);

2
fs/ocfs2/quota_global.c
View file

@ -853,8 +853,6 @@ static void ocfs2_destroy_dquot(struct dquot *dquot)
const struct dquot_operations ocfs2_quota_operations = {
.initialize = dquot_initialize,
.drop = dquot_drop,
.alloc_inode = dquot_alloc_inode,
.free_inode = dquot_free_inode,
.transfer = dquot_transfer,
.write_dquot = ocfs2_write_dquot,
.acquire_dquot = ocfs2_acquire_dquot,

29
fs/quota/dquot.c
View file

@ -1531,15 +1531,15 @@ EXPORT_SYMBOL(__dquot_alloc_space);
/*
* This operation can block, but only after everything is updated
*/
int dquot_alloc_inode(const struct inode *inode, qsize_t number)
int dquot_alloc_inode(const struct inode *inode)
{
int cnt, ret = NO_QUOTA;
int cnt, ret = -EDQUOT;
char warntype[MAXQUOTAS];
/* First test before acquiring mutex - solves deadlocks when we
* re-enter the quota code and are already holding the mutex */
if (IS_NOQUOTA(inode))
return QUOTA_OK;
if (!sb_any_quota_active(inode->i_sb) || IS_NOQUOTA(inode))
return 0;
for (cnt = 0; cnt < MAXQUOTAS; cnt++)
warntype[cnt] = QUOTA_NL_NOWARN;
down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
@ -1547,7 +1547,7 @@ int dquot_alloc_inode(const struct inode *inode, qsize_t number)
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
if (!inode->i_dquot[cnt])
continue;
if (check_idq(inode->i_dquot[cnt], number, warntype+cnt)
if (check_idq(inode->i_dquot[cnt], 1, warntype+cnt)
== NO_QUOTA)
goto warn_put_all;
}
@ -1555,12 +1555,12 @@ int dquot_alloc_inode(const struct inode *inode, qsize_t number)
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
if (!inode->i_dquot[cnt])
continue;
dquot_incr_inodes(inode->i_dquot[cnt], number);
dquot_incr_inodes(inode->i_dquot[cnt], 1);
}
ret = QUOTA_OK;
ret = 0;
warn_put_all:
spin_unlock(&dq_data_lock);
if (ret == QUOTA_OK)
if (ret == 0)
mark_all_dquot_dirty(inode->i_dquot);
flush_warnings(inode->i_dquot, warntype);
up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
@ -1638,29 +1638,28 @@ EXPORT_SYMBOL(__dquot_free_space);
/*
* This operation can block, but only after everything is updated
*/
int dquot_free_inode(const struct inode *inode, qsize_t number)
void dquot_free_inode(const struct inode *inode)
{
unsigned int cnt;
char warntype[MAXQUOTAS];
/* First test before acquiring mutex - solves deadlocks when we
* re-enter the quota code and are already holding the mutex */
if (IS_NOQUOTA(inode))
return QUOTA_OK;
if (!sb_any_quota_active(inode->i_sb) || IS_NOQUOTA(inode))
return;
down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
spin_lock(&dq_data_lock);
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
if (!inode->i_dquot[cnt])
continue;
warntype[cnt] = info_idq_free(inode->i_dquot[cnt], number);
dquot_decr_inodes(inode->i_dquot[cnt], number);
warntype[cnt] = info_idq_free(inode->i_dquot[cnt], 1);
dquot_decr_inodes(inode->i_dquot[cnt], 1);
}
spin_unlock(&dq_data_lock);
mark_all_dquot_dirty(inode->i_dquot);
flush_warnings(inode->i_dquot, warntype);
up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
return QUOTA_OK;
}
EXPORT_SYMBOL(dquot_free_inode);
@ -1815,8 +1814,6 @@ EXPORT_SYMBOL(dquot_commit_info);
const struct dquot_operations dquot_operations = {
.initialize = dquot_initialize,
.drop = dquot_drop,
.alloc_inode = dquot_alloc_inode,
.free_inode = dquot_free_inode,
.transfer = dquot_transfer,
.write_dquot = dquot_commit,
.acquire_dquot = dquot_acquire,

10
fs/reiserfs/inode.c
View file

@ -54,7 +54,7 @@ void reiserfs_delete_inode(struct inode *inode)
* after delete_object so that quota updates go into the same transaction as
* stat data deletion */
if (!err)
vfs_dq_free_inode(inode);
dquot_free_inode(inode);
if (journal_end(&th, inode->i_sb, jbegin_count))
goto out;
@ -1765,10 +1765,10 @@ int reiserfs_new_inode(struct reiserfs_transaction_handle *th,
BUG_ON(!th->t_trans_id);
if (vfs_dq_alloc_inode(inode)) {
err = -EDQUOT;
vfs_dq_init(inode);
err = dquot_alloc_inode(inode);
if (err)
goto out_end_trans;
}
if (!dir->i_nlink) {
err = -EPERM;
goto out_bad_inode;
@ -1959,7 +1959,7 @@ int reiserfs_new_inode(struct reiserfs_transaction_handle *th,
INODE_PKEY(inode)->k_objectid = 0;
/* Quota change must be inside a transaction for journaling */
vfs_dq_free_inode(inode);
dquot_free_inode(inode);
out_end_trans:
journal_end(th, th->t_super, th->t_blocks_allocated);

2
fs/reiserfs/super.c
View file

@ -618,8 +618,6 @@ static int reiserfs_quota_on(struct super_block *, int, int, char *, int);
static const struct dquot_operations reiserfs_quota_operations = {
.initialize = dquot_initialize,
.drop = dquot_drop,
.alloc_inode = dquot_alloc_inode,
.free_inode = dquot_free_inode,
.transfer = dquot_transfer,
.write_dquot = reiserfs_write_dquot,
.acquire_dquot = reiserfs_acquire_dquot,

10
fs/udf/ialloc.c
View file

@ -36,7 +36,7 @@ void udf_free_inode(struct inode *inode)
* Note: we must free any quota before locking the superblock,
* as writing the quota to disk may need the lock as well.
*/
vfs_dq_free_inode(inode);
dquot_free_inode(inode);
vfs_dq_drop(inode);
clear_inode(inode);
@ -61,7 +61,7 @@ struct inode *udf_new_inode(struct inode *dir, int mode, int *err)
struct super_block *sb = dir->i_sb;
struct udf_sb_info *sbi = UDF_SB(sb);
struct inode *inode;
int block;
int block, ret;
uint32_t start = UDF_I(dir)->i_location.logicalBlockNum;
struct udf_inode_info *iinfo;
struct udf_inode_info *dinfo = UDF_I(dir);
@ -153,12 +153,14 @@ struct inode *udf_new_inode(struct inode *dir, int mode, int *err)
insert_inode_hash(inode);
mark_inode_dirty(inode);
if (vfs_dq_alloc_inode(inode)) {
vfs_dq_init(inode);
ret = dquot_alloc_inode(inode);
if (ret) {
vfs_dq_drop(inode);
inode->i_flags |= S_NOQUOTA;
inode->i_nlink = 0;
iput(inode);
*err = -EDQUOT;
*err = ret;
return NULL;
}

7
fs/ufs/ialloc.c
View file

@ -95,7 +95,7 @@ void ufs_free_inode (struct inode * inode)
is_directory = S_ISDIR(inode->i_mode);
vfs_dq_free_inode(inode);
dquot_free_inode(inode);
vfs_dq_drop(inode);
clear_inode (inode);
@ -355,9 +355,10 @@ struct inode * ufs_new_inode(struct inode * dir, int mode)
unlock_super (sb);
if (vfs_dq_alloc_inode(inode)) {
vfs_dq_init(inode);
err = dquot_alloc_inode(inode);
if (err) {
vfs_dq_drop(inode);
err = -EDQUOT;
goto fail_without_unlock;
}

2
include/linux/quota.h
View file

@ -297,8 +297,6 @@ struct quota_format_ops {
struct dquot_operations {
int (*initialize) (struct inode *, int);
int (*drop) (struct inode *);
int (*alloc_inode) (const struct inode *, qsize_t);
int (*free_inode) (const struct inode *, qsize_t);
int (*transfer) (struct inode *, qid_t *, unsigned long);
int (*write_dquot) (struct dquot *); /* Ordinary dquot write */
struct dquot *(*alloc_dquot)(struct super_block *, int); /* Allocate memory for new dquot */

24
include/linux/quotaops.h
View file

@ -37,10 +37,10 @@ int __dquot_alloc_space(struct inode *inode, qsize_t number,
int warn, int reserve);
void __dquot_free_space(struct inode *inode, qsize_t number, int reserve);
int dquot_alloc_inode(const struct inode *inode, qsize_t number);
int dquot_alloc_inode(const struct inode *inode);
int dquot_claim_space_nodirty(struct inode *inode, qsize_t number);
int dquot_free_inode(const struct inode *inode, qsize_t number);
void dquot_free_inode(const struct inode *inode);
int dquot_transfer(struct inode *inode, qid_t *chid, unsigned long mask);
int dquot_commit(struct dquot *dquot);
@ -148,22 +148,6 @@ static inline void vfs_dq_init(struct inode *inode)
inode->i_sb->dq_op->initialize(inode, -1);
}
static inline int vfs_dq_alloc_inode(struct inode *inode)
{
if (sb_any_quota_active(inode->i_sb)) {
vfs_dq_init(inode);
if (inode->i_sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA)
return 1;
}
return 0;
}
static inline void vfs_dq_free_inode(struct inode *inode)
{
if (sb_any_quota_active(inode->i_sb))
inode->i_sb->dq_op->free_inode(inode, 1);
}
/* Cannot be called inside a transaction */
static inline int vfs_dq_off(struct super_block *sb, int remount)
{
@ -231,12 +215,12 @@ static inline void vfs_dq_drop(struct inode *inode)
{
}
static inline int vfs_dq_alloc_inode(struct inode *inode)
static inline int dquot_alloc_inode(const struct inode *inode)
{
return 0;
}
static inline void vfs_dq_free_inode(struct inode *inode)
static inline void dquot_free_inode(const struct inode *inode)
{
}