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>
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index b90c3bf..527c46d 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -1466,7 +1466,7 @@
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)) {
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index ea33bdf..735f019 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -3151,7 +3151,7 @@
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)) {
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 81d6054..3e0f6af 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -5425,7 +5425,7 @@
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)) {
diff --git a/fs/jfs/file.c b/fs/jfs/file.c
index 14ba982..85d9ec6 100644
--- a/fs/jfs/file.c
+++ b/fs/jfs/file.c
@@ -98,7 +98,7 @@
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)) {
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index f74f140..e127c53 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -966,10 +966,10 @@
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);
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index b1a5036..1056a21 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -1822,10 +1822,9 @@
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);
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index dc2c65e..0f22fda 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -3076,9 +3076,10 @@
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
*/
diff --git a/fs/udf/file.c b/fs/udf/file.c
index 4b6a46c..6ebc043 100644
--- a/fs/udf/file.c
+++ b/fs/udf/file.c
@@ -227,7 +227,7 @@
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) ||
diff --git a/fs/ufs/truncate.c b/fs/ufs/truncate.c
index ee8db3e..f294c44 100644
--- a/fs/ufs/truncate.c
+++ b/fs/ufs/truncate.c
@@ -518,18 +518,18 @@
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;
diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h
index 82c70c4..8a78187 100644
--- a/include/linux/quotaops.h
+++ b/include/linux/quotaops.h
@@ -14,6 +14,14 @@
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)
/*