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[v3,33/39] ubifs: adapt quota space informatin in do_setattr

Message ID 1442307754-13233-34-git-send-email-yangds.fnst@cn.fujitsu.com
State New
Headers show

Commit Message

Yang Dongsheng Sept. 15, 2015, 9:02 a.m. UTC
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@cn.fujitsu.com>
---
 fs/ubifs/file.c | 11 +++++++++++
 1 file changed, 11 insertions(+)
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Patch

diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index 59b2098..ec89298 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -1256,6 +1256,17 @@  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 (S_ISREG(inode->i_mode)) {
+			if (new_size > inode->i_size) {
+				err = dquot_alloc_space_nodirty(inode, new_size - inode->i_size);
+				if (err) {
+					ubifs_release_budget(c, &req);
+					return err;
+				}
+			} else {
+				dquot_free_space_nodirty(inode, inode->i_size - new_size);
+			}
+		}
 		truncate_setsize(inode, new_size);
 	}