dquot: cleanup dquot transfer routine

Get rid of the transfer dquot operation - it is now always called from
the filesystem and if a filesystem really needs it's own (which none
currently does) it can just call into it's own routine directly.

Rename the now static low-level dquot_transfer helper to __dquot_transfer
and vfs_dq_transfer to dquot_transfer to have a consistent namespace,
and make the new dquot_transfer return a normal negative errno value
which all callers expect.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>

13 files changed, 16 insertions, 22 deletions

diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index 71b032c65a0..3cfcfd9a131 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -1459,7 +1459,7 @@ int ext2_setattr(struct dentry *dentry, struct iattr *iattr)
 		return error;
 	if ((iattr->ia_valid & ATTR_UID && iattr->ia_uid != inode->i_uid) ||
 	    (iattr->ia_valid & ATTR_GID && iattr->ia_gid != inode->i_gid)) {
-		error = vfs_dq_transfer(inode, iattr) ? -EDQUOT : 0;
+		error = dquot_transfer(inode, iattr);
 		if (error)
 			return error;
 	}
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index 20f02d69365..14d40a4dd6f 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -3160,7 +3160,7 @@ int ext3_setattr(struct dentry *dentry, struct iattr *attr)
 			error = PTR_ERR(handle);
 			goto err_out;
 		}
-		error = vfs_dq_transfer(inode, attr) ? -EDQUOT : 0;
+		error = dquot_transfer(inode, attr);
 		if (error) {
 			ext3_journal_stop(handle);
 			return error;
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 8b8bc4f9cb1..f7d4a2c19de 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -752,7 +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,
-	.transfer	= dquot_transfer,
 	.write_dquot	= ext3_write_dquot,
 	.acquire_dquot	= ext3_acquire_dquot,
 	.release_dquot	= ext3_release_dquot,
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 9f607ea411c..6a002a6d062 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -5263,7 +5263,7 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr)
 			error = PTR_ERR(handle);
 			goto err_out;
 		}
-		error = vfs_dq_transfer(inode, attr) ? -EDQUOT : 0;
+		error = dquot_transfer(inode, attr);
 		if (error) {
 			ext4_journal_stop(handle);
 			return error;
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index d231da8798e..b4253fb7bab 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1017,7 +1017,6 @@ static const struct dquot_operations ext4_quota_operations = {
 #ifdef CONFIG_QUOTA
 	.get_reserved_space = ext4_get_reserved_space,
 #endif
-	.transfer	= dquot_transfer,
 	.write_dquot	= ext4_write_dquot,
 	.acquire_dquot	= ext4_acquire_dquot,
 	.release_dquot	= ext4_release_dquot,
diff --git a/fs/jfs/file.c b/fs/jfs/file.c
index a4229e49330..2c201783836 100644
--- a/fs/jfs/file.c
+++ b/fs/jfs/file.c
@@ -100,8 +100,9 @@ int jfs_setattr(struct dentry *dentry, struct iattr *iattr)
 
 	if ((iattr->ia_valid & ATTR_UID && iattr->ia_uid != inode->i_uid) ||
 	    (iattr->ia_valid & ATTR_GID && iattr->ia_gid != inode->i_gid)) {
-		if (vfs_dq_transfer(inode, iattr))
-			return -EDQUOT;
+		rc = dquot_transfer(inode, iattr);
+		if (rc)
+			return rc;
 	}
 
 	rc = inode_setattr(inode, iattr);
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index 6cf3d8d1836..472e8f8bc89 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -1020,7 +1020,7 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
 		/*
 		 * Gather pointers to quota structures so that allocation /
 		 * freeing of quota structures happens here and not inside
-		 * vfs_dq_transfer() where we have problems with lock ordering
+		 * dquot_transfer() where we have problems with lock ordering
 		 */
 		if (attr->ia_valid & ATTR_UID && attr->ia_uid != inode->i_uid
 		    && OCFS2_HAS_RO_COMPAT_FEATURE(sb,
@@ -1053,7 +1053,7 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
 			mlog_errno(status);
 			goto bail_unlock;
 		}
-		status = vfs_dq_transfer(inode, attr) ? -EDQUOT : 0;
+		status = dquot_transfer(inode, attr);
 		if (status < 0)
 			goto bail_commit;
 	} else {
diff --git a/fs/ocfs2/quota_global.c b/fs/ocfs2/quota_global.c
index ed96b3eeb13..b654bd103b6 100644
--- a/fs/ocfs2/quota_global.c
+++ b/fs/ocfs2/quota_global.c
@@ -853,7 +853,6 @@ static void ocfs2_destroy_dquot(struct dquot *dquot)
 const struct dquot_operations ocfs2_quota_operations = {
 	.initialize	= dquot_initialize,
 	.drop		= dquot_drop,
-	.transfer	= dquot_transfer,
 	.write_dquot	= ocfs2_write_dquot,
 	.acquire_dquot	= ocfs2_acquire_dquot,
 	.release_dquot	= ocfs2_release_dquot,
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index ed131318b84..78ce4c48ad7 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -1669,7 +1669,7 @@ EXPORT_SYMBOL(dquot_free_inode);
  * This operation can block, but only after everything is updated
  * A transaction must be started when entering this function.
  */
-int dquot_transfer(struct inode *inode, qid_t *chid, unsigned long mask)
+static int __dquot_transfer(struct inode *inode, qid_t *chid, unsigned long mask)
 {
 	qsize_t space, cur_space;
 	qsize_t rsv_space = 0;
@@ -1766,12 +1766,11 @@ over_quota:
 	ret = NO_QUOTA;
 	goto warn_put_all;
 }
-EXPORT_SYMBOL(dquot_transfer);
 
 /* Wrapper for transferring ownership of an inode for uid/gid only
  * Called from FSXXX_setattr()
  */
-int vfs_dq_transfer(struct inode *inode, struct iattr *iattr)
+int dquot_transfer(struct inode *inode, struct iattr *iattr)
 {
 	qid_t chid[MAXQUOTAS];
 	unsigned long mask = 0;
@@ -1786,12 +1785,12 @@ int vfs_dq_transfer(struct inode *inode, struct iattr *iattr)
 	}
 	if (sb_any_quota_active(inode->i_sb) && !IS_NOQUOTA(inode)) {
 		vfs_dq_init(inode);
-		if (inode->i_sb->dq_op->transfer(inode, chid, mask) == NO_QUOTA)
-			return 1;
+		if (__dquot_transfer(inode, chid, mask) == NO_QUOTA)
+			return -EDQUOT;
 	}
 	return 0;
 }
-EXPORT_SYMBOL(vfs_dq_transfer);
+EXPORT_SYMBOL(dquot_transfer);
 
 /*
  * Write info of quota file to disk
@@ -1814,7 +1813,6 @@ EXPORT_SYMBOL(dquot_commit_info);
 const struct dquot_operations dquot_operations = {
 	.initialize	= dquot_initialize,
 	.drop		= dquot_drop,
-	.transfer	= dquot_transfer,
 	.write_dquot	= dquot_commit,
 	.acquire_dquot	= dquot_acquire,
 	.release_dquot	= dquot_release,
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index f56a3d2e649..99a5e5a8ab5 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -3134,8 +3134,7 @@ int reiserfs_setattr(struct dentry *dentry, struct iattr *attr)
 						  jbegin_count);
 				if (error)
 					goto out;
-				error =
-				    vfs_dq_transfer(inode, attr) ? -EDQUOT : 0;
+				error = dquot_transfer(inode, attr);
 				if (error) {
 					journal_end(&th, inode->i_sb,
 						    jbegin_count);
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index e942ceecf2b..97c3e8ed7db 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -618,7 +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,
-	.transfer = dquot_transfer,
 	.write_dquot = reiserfs_write_dquot,
 	.acquire_dquot = reiserfs_acquire_dquot,
 	.release_dquot = reiserfs_release_dquot,
diff --git a/fs/udf/file.c b/fs/udf/file.c
index 35ca47281fa..2df7fcb677b 100644
--- a/fs/udf/file.c
+++ b/fs/udf/file.c
@@ -229,7 +229,7 @@ static int udf_setattr(struct dentry *dentry, struct iattr *iattr)
 
 	if ((iattr->ia_valid & ATTR_UID && iattr->ia_uid != inode->i_uid) ||
             (iattr->ia_valid & ATTR_GID && iattr->ia_gid != inode->i_gid)) {
-		error = vfs_dq_transfer(inode, iattr) ? -EDQUOT : 0;
+		error = dquot_transfer(inode, iattr);
 		if (error)
 			return error;
 	}
diff --git a/fs/ufs/truncate.c b/fs/ufs/truncate.c
index 56ab31f00bd..87bbab68590 100644
--- a/fs/ufs/truncate.c
+++ b/fs/ufs/truncate.c
@@ -520,7 +520,7 @@ static int ufs_setattr(struct dentry *dentry, struct iattr *attr)
 
 	if ((ia_valid & ATTR_UID && attr->ia_uid != inode->i_uid) ||
 	    (ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid)) {
-		error = vfs_dq_transfer(inode, attr) ? -EDQUOT : 0;
+		error = dquot_transfer(inode, attr);
 		if (error)
 			return error;
 	}