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quota: unify quota init condition in setattr 

Quota must being initialized if size or uid/git changes requested.
But initialization performed in two different places:
in case of i_size file system is responsible for dquot init
, but in case of uid/gid init will be called internally in
dquot_transfer().
This ambiguity makes code harder to understand.
Let's move this logic to one common helper function.

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Dmitry Monakhov 2010-04-08 22:04:20 +04:00 committed by Jan Kara
parent fcbc59f96e
commit 12755627bd
10 changed files with 23 additions and 15 deletions
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2
fs/ext2/inode.c
View File

@ -1466,7 +1466,7 @@ int ext2_setattr(struct dentry *dentry, struct iattr *iattr)
if (error)
return error;
if (iattr->ia_valid & ATTR_SIZE)
if (is_quota_modification(inode, iattr))
dquot_initialize(inode);
if ((iattr->ia_valid & ATTR_UID && iattr->ia_uid != inode->i_uid) ||
(iattr->ia_valid & ATTR_GID && iattr->ia_gid != inode->i_gid)) {

2
fs/ext3/inode.c
View File

@ -3151,7 +3151,7 @@ int ext3_setattr(struct dentry *dentry, struct iattr *attr)
if (error)
return error;
if (ia_valid & ATTR_SIZE)
if (is_quota_modification(inode, attr))
dquot_initialize(inode);
if ((ia_valid & ATTR_UID && attr->ia_uid != inode->i_uid) ||
(ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid)) {

2
fs/ext4/inode.c
View File

@ -5425,7 +5425,7 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr)
if (error)
return error;
if (ia_valid & ATTR_SIZE)
if (is_quota_modification(inode, attr))
dquot_initialize(inode);
if ((ia_valid & ATTR_UID && attr->ia_uid != inode->i_uid) ||
(ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid)) {

2
fs/jfs/file.c
View File

@ -98,7 +98,7 @@ int jfs_setattr(struct dentry *dentry, struct iattr *iattr)
if (rc)
return rc;
if (iattr->ia_valid & ATTR_SIZE)
if (is_quota_modification(inode, iattr))
dquot_initialize(inode);
if ((iattr->ia_valid & ATTR_UID && iattr->ia_uid != inode->i_uid) ||
(iattr->ia_valid & ATTR_GID && iattr->ia_gid != inode->i_gid)) {

4
fs/ocfs2/file.c
View File

@ -966,10 +966,10 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
if (status)
return status;
if (is_quota_modification(inode, attr))
dquot_initialize(inode);
size_change = S_ISREG(inode->i_mode) && attr->ia_valid & ATTR_SIZE;
if (size_change) {
dquot_initialize(inode);
status = ocfs2_rw_lock(inode, 1);
if (status < 0) {
mlog_errno(status);

5
fs/quota/dquot.c
View File

@ -1822,10 +1822,9 @@ int dquot_transfer(struct inode *inode, struct iattr *iattr)
mask |= 1 << GRPQUOTA;
chid[GRPQUOTA] = iattr->ia_gid;
}
if (sb_any_quota_active(inode->i_sb) && !IS_NOQUOTA(inode)) {
dquot_initialize(inode);
if (sb_any_quota_active(inode->i_sb) && !IS_NOQUOTA(inode))
return __dquot_transfer(inode, chid, mask);
}
return 0;
}
EXPORT_SYMBOL(dquot_transfer);

3
fs/reiserfs/inode.c
View File

@ -3076,9 +3076,10 @@ int reiserfs_setattr(struct dentry *dentry, struct iattr *attr)
ia_valid = attr->ia_valid &= ~(ATTR_KILL_SUID|ATTR_KILL_SGID);
depth = reiserfs_write_lock_once(inode->i_sb);
if (attr->ia_valid & ATTR_SIZE) {
if (is_quota_modification(inode, attr))
dquot_initialize(inode);
if (attr->ia_valid & ATTR_SIZE) {
/* version 2 items will be caught by the s_maxbytes check
** done for us in vmtruncate
*/

2
fs/udf/file.c
View File

@ -227,7 +227,7 @@ int udf_setattr(struct dentry *dentry, struct iattr *iattr)
if (error)
return error;
if (iattr->ia_valid & ATTR_SIZE)
if (is_quota_modification(inode, iattr))
dquot_initialize(inode);
if ((iattr->ia_valid & ATTR_UID && iattr->ia_uid != inode->i_uid) ||

8
fs/ufs/truncate.c
View File

@ -518,18 +518,18 @@ int ufs_setattr(struct dentry *dentry, struct iattr *attr)
if (error)
return error;
if (is_quota_modification(inode, attr))
dquot_initialize(inode);
if ((ia_valid & ATTR_UID && attr->ia_uid != inode->i_uid) ||
(ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid)) {
error = dquot_transfer(inode, attr);
if (error)
return error;
}
if (ia_valid & ATTR_SIZE &&
attr->ia_size != i_size_read(inode)) {
if (ia_valid & ATTR_SIZE && attr->ia_size != inode->i_size) {
loff_t old_i_size = inode->i_size;
dquot_initialize(inode);
error = vmtruncate(inode, attr->ia_size);
if (error)
return error;

8
include/linux/quotaops.h
View File

@ -14,6 +14,14 @@ static inline struct quota_info *sb_dqopt(struct super_block *sb)
return &sb->s_dquot;
}
/* i_mutex must being held */
static inline bool is_quota_modification(struct inode *inode, struct iattr *ia)
{
return (ia->ia_valid & ATTR_SIZE && ia->ia_size != inode->i_size) ||
(ia->ia_valid & ATTR_UID && ia->ia_uid != inode->i_uid) ||
(ia->ia_valid & ATTR_GID && ia->ia_gid != inode->i_gid);
}
#if defined(CONFIG_QUOTA)
/*