[PATCH 22/25] ubifs: adapt quota space informatin in do_setattr

[Dongsheng Yang]

In do_setattr, there is a possibility to change the size of
a file. In this case, we have to notify the changed size to
quota subsystem.

Signed-off-by: Dongsheng Yang <yangds.fnst at cn.fujitsu.com>
---
 fs/ubifs/file.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index b907f197..aac10bd 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -1249,6 +1249,13 @@ static int do_setattr(struct ubifs_info *c, struct inode *inode,
 
 	if (attr->ia_valid & ATTR_SIZE) {
 		dbg_gen("size %lld -> %lld", inode->i_size, new_size);
+		if (new_size > inode->i_size) {
+			err = dquot_alloc_space_nodirty(inode, new_size - inode->i_size);
+			if (err)
+				return err;
+		} else {
+			dquot_free_space_nodirty(inode, inode->i_size - new_size);
+		}
 		truncate_setsize(inode, new_size);
 	}
 
-- 
1.8.4.2