dquot: move dquot transfer responsibility into the filesystem

Currently notify_change calls vfs_dq_transfer directly.  This means
we tie the quota code into the VFS.  Get rid of that and make the
filesystem responsible for the transfer.  Most filesystems already
do this, only ufs and udf need the code added, and for jfs it needs to
be enabled unconditionally instead of only when ACLs are enabled.

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

8 files changed, 65 insertions, 38 deletions

diff --git a/fs/attr.c b/fs/attr.c
index 96d394bdaddf..0a6ea54cde7d 100644
--- a/fs/attr.c
+++ b/fs/attr.c
@@ -12,7 +12,6 @@
 #include <linux/capability.h>
 #include <linux/fsnotify.h>
 #include <linux/fcntl.h>
-#include <linux/quotaops.h>
 #include <linux/security.h>
 
 /* Taken over from the old code... */
@@ -212,14 +211,8 @@ int notify_change(struct dentry * dentry, struct iattr * attr)
                 error = inode->i_op->setattr(dentry, attr);
         } else {
                 error = inode_change_ok(inode, attr);
-                if (!error) {
-                        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;
-                        if (!error)
-                                error = inode_setattr(inode, attr);
-                }
+                if (!error)
+                        error = inode_setattr(inode, attr);
         }
 
         if (ia_valid & ATTR_SIZE)
diff --git a/fs/jfs/acl.c b/fs/jfs/acl.c
index d66477c34306..213169780b6c 100644
--- a/fs/jfs/acl.c
+++ b/fs/jfs/acl.c
@@ -20,7 +20,6 @@
 
 #include <linux/sched.h>
 #include <linux/fs.h>
-#include <linux/quotaops.h>
 #include <linux/posix_acl_xattr.h>
 #include "jfs_incore.h"
 #include "jfs_txnmgr.h"
@@ -174,7 +173,7 @@ cleanup:
         return rc;
 }
 
-static int jfs_acl_chmod(struct inode *inode)
+int jfs_acl_chmod(struct inode *inode)
 {
         struct posix_acl *acl, *clone;
         int rc;
@@ -205,26 +204,3 @@ static int jfs_acl_chmod(struct inode *inode)
         posix_acl_release(clone);
         return rc;
 }
-
-int jfs_setattr(struct dentry *dentry, struct iattr *iattr)
-{
-        struct inode *inode = dentry->d_inode;
-        int rc;
-
-        rc = inode_change_ok(inode, iattr);
-        if (rc)
-                return rc;
-
-        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 = inode_setattr(inode, iattr);
-
-        if (!rc && (iattr->ia_valid & ATTR_MODE))
-                rc = jfs_acl_chmod(inode);
-
-        return rc;
-}
diff --git a/fs/jfs/file.c b/fs/jfs/file.c
index 2b70fa78e4a7..a4229e49330e 100644
--- a/fs/jfs/file.c
+++ b/fs/jfs/file.c
@@ -18,6 +18,7 @@
  */
 
 #include <linux/fs.h>
+#include <linux/quotaops.h>
 #include "jfs_incore.h"
 #include "jfs_inode.h"
 #include "jfs_dmap.h"
@@ -88,14 +89,37 @@ static int jfs_release(struct inode *inode, struct file *file)
         return 0;
 }
 
+int jfs_setattr(struct dentry *dentry, struct iattr *iattr)
+{
+        struct inode *inode = dentry->d_inode;
+        int rc;
+
+        rc = inode_change_ok(inode, iattr);
+        if (rc)
+                return rc;
+
+        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 = inode_setattr(inode, iattr);
+
+        if (!rc && (iattr->ia_valid & ATTR_MODE))
+                rc = jfs_acl_chmod(inode);
+
+        return rc;
+}
+
 const struct inode_operations jfs_file_inode_operations = {
         .truncate       = jfs_truncate,
         .setxattr       = jfs_setxattr,
         .getxattr       = jfs_getxattr,
         .listxattr      = jfs_listxattr,
         .removexattr    = jfs_removexattr,
-#ifdef CONFIG_JFS_POSIX_ACL
         .setattr        = jfs_setattr,
+#ifdef CONFIG_JFS_POSIX_ACL
         .check_acl      = jfs_check_acl,
 #endif
 };
diff --git a/fs/jfs/jfs_acl.h b/fs/jfs/jfs_acl.h
index b07bd417ef85..54e07559878d 100644
--- a/fs/jfs/jfs_acl.h
+++ b/fs/jfs/jfs_acl.h
@@ -22,7 +22,7 @@
 
 int jfs_check_acl(struct inode *, int);
 int jfs_init_acl(tid_t, struct inode *, struct inode *);
-int jfs_setattr(struct dentry *, struct iattr *);
+int jfs_acl_chmod(struct inode *inode);
 
 #else
 
@@ -32,5 +32,10 @@ static inline int jfs_init_acl(tid_t tid, struct inode *inode,
         return 0;
 }
 
+static inline int jfs_acl_chmod(struct inode *inode)
+{
+        return 0;
+}
+
 #endif
 #endif          /* _H_JFS_ACL */
diff --git a/fs/jfs/jfs_inode.h b/fs/jfs/jfs_inode.h
index 1eff7db34d63..4b91b2787835 100644
--- a/fs/jfs/jfs_inode.h
+++ b/fs/jfs/jfs_inode.h
@@ -40,6 +40,7 @@ extern struct dentry *jfs_fh_to_parent(struct super_block *sb, struct fid *fid,
         int fh_len, int fh_type);
 extern void jfs_set_inode_flags(struct inode *);
 extern int jfs_get_block(struct inode *, sector_t, struct buffer_head *, int);
+extern int jfs_setattr(struct dentry *, struct iattr *);
 
 extern const struct address_space_operations jfs_aops;
 extern const struct inode_operations jfs_dir_inode_operations;
diff --git a/fs/jfs/namei.c b/fs/jfs/namei.c
index c79a4270f083..1d1390afe55e 100644
--- a/fs/jfs/namei.c
+++ b/fs/jfs/namei.c
@@ -1541,8 +1541,8 @@ const struct inode_operations jfs_dir_inode_operations = {
         .getxattr       = jfs_getxattr,
         .listxattr      = jfs_listxattr,
         .removexattr    = jfs_removexattr,
-#ifdef CONFIG_JFS_POSIX_ACL
         .setattr        = jfs_setattr,
+#ifdef CONFIG_JFS_POSIX_ACL
         .check_acl      = jfs_check_acl,
 #endif
 };
diff --git a/fs/udf/file.c b/fs/udf/file.c
index f311d509b6a3..35ca47281faa 100644
--- a/fs/udf/file.c
+++ b/fs/udf/file.c
@@ -34,6 +34,7 @@
 #include <linux/errno.h>
 #include <linux/smp_lock.h>
 #include <linux/pagemap.h>
+#include <linux/quotaops.h>
 #include <linux/buffer_head.h>
 #include <linux/aio.h>
 
@@ -217,6 +218,26 @@ const struct file_operations udf_file_operations = {
         .llseek                 = generic_file_llseek,
 };
 
+static int udf_setattr(struct dentry *dentry, struct iattr *iattr)
+{
+        struct inode *inode = dentry->d_inode;
+        int error;
+
+        error = inode_change_ok(inode, iattr);
+        if (error)
+                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;
+                if (error)
+                        return error;
+        }
+
+        return inode_setattr(inode, iattr);
+}
+
 const struct inode_operations udf_file_inode_operations = {
-        .truncate = udf_truncate,
+        .truncate               = udf_truncate,
+        .setattr                = udf_setattr,
 };
diff --git a/fs/ufs/truncate.c b/fs/ufs/truncate.c
index 41dd431ce228..56ab31f00bd0 100644
--- a/fs/ufs/truncate.c
+++ b/fs/ufs/truncate.c
@@ -44,6 +44,7 @@
 #include <linux/buffer_head.h>
 #include <linux/blkdev.h>
 #include <linux/sched.h>
+#include <linux/quotaops.h>
 
 #include "ufs_fs.h"
 #include "ufs.h"
@@ -517,6 +518,12 @@ static int ufs_setattr(struct dentry *dentry, struct iattr *attr)
         if (error)
                 return error;
 
+        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;
+                if (error)
+                        return error;
+        }
         if (ia_valid & ATTR_SIZE &&
             attr->ia_size != i_size_read(inode)) {
                 loff_t old_i_size = inode->i_size;