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dquot: cleanup inode allocation / freeing routines 

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

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 @@ got:
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 @@ got:
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 @@ got:
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 @@ really_out:
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 @@ got:
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 @@ really_out:
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 @@ bail:
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 @@ cg_found:
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)
{
}