From: Namjae Jeon <linkinjeon@kernel.org>
Date: Sun, 19 Jun 2022 13:35:48 +0000 (+0900)
Subject: ksmbd: set the range of bytes to zero without extending file size in FSCTL_ZERO_DATA
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=6791b57284f59715602e952f6eef8e6303108cf6;p=linux.git

ksmbd: set the range of bytes to zero without extending file size in FSCTL_ZERO_DATA

commit 18e39fb960e6a908ac5230b57e3d0d6c25232368 upstream.

generic/091, 263 test failed since commit f66f8b94e7f2 ("cifs: when
extending a file with falloc we should make files not-sparse").
FSCTL_ZERO_DATA sets the range of bytes to zero without extending file
size. The VFS_FALLOCATE_FL_KEEP_SIZE flag should be used even on
non-sparse files.

Cc: stable@vger.kernel.org
Reviewed-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/fs/ksmbd/vfs.c b/fs/ksmbd/vfs.c
index 835b384b08959..02bafd52cd060 100644
--- a/fs/ksmbd/vfs.c
+++ b/fs/ksmbd/vfs.c
@@ -1018,7 +1018,9 @@ int ksmbd_vfs_zero_data(struct ksmbd_work *work, struct ksmbd_file *fp,
 				     FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
 				     off, len);
 
-	return vfs_fallocate(fp->filp, FALLOC_FL_ZERO_RANGE, off, len);
+	return vfs_fallocate(fp->filp,
+			     FALLOC_FL_ZERO_RANGE | FALLOC_FL_KEEP_SIZE,
+			     off, len);
 }
 
 int ksmbd_vfs_fqar_lseek(struct ksmbd_file *fp, loff_t start, loff_t length,