Fix the cifs filesystem implementations of FALLOC_FL_ZERO_RANGE, in
smb3_zero_range(), to set i_size after extending the file on the server.
Fixes: 72c419d9b073 ("cifs: fix smb3_zero_range so it can expand the file-size when required")
Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
cc: Steve French <sfrench@xxxxxxxxx>
cc: Paulo Alcantara <pc@xxxxxxxxxxxxx>
cc: Shyam Prasad N <nspmangalore@xxxxxxxxx>
cc: Rohith Surabattula <rohiths.msft@xxxxxxxxx>
cc: Jeff Layton <jlayton@xxxxxxxxxx>
cc: linux-cifs@xxxxxxxxxxxxxxx
cc: linux-mm@xxxxxxxxx
---
fs/smb/client/smb2ops.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/fs/smb/client/smb2ops.c b/fs/smb/client/smb2ops.c
index a959ed2c9b22..572d2c22a703 100644
--- a/fs/smb/client/smb2ops.c
+++ b/fs/smb/client/smb2ops.c
@@ -3307,6 +3307,7 @@ static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
struct inode *inode = file_inode(file);
struct cifsInodeInfo *cifsi = CIFS_I(inode);
struct cifsFileInfo *cfile = file->private_data;
+ unsigned long long new_size;
long rc;
unsigned int xid;
__le64 eof;
@@ -3337,10 +3338,15 @@ static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
/*
* do we also need to change the size of the file?
*/
- if (keep_size == false && i_size_read(inode) < offset + len) {
- eof = cpu_to_le64(offset + len);
+ new_size = offset + len;
+ if (keep_size == false && (unsigned long long)i_size_read(inode) < new_size) {
+ eof = cpu_to_le64(new_size);
rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
cfile->fid.volatile_fid, cfile->pid, &eof);
+ if (rc >= 0) {
+ truncate_setsize(inode, new_size);
+ fscache_resize_cookie(cifs_inode_cookie(inode), new_size);
+ }
}
zero_range_exit:
