gfs2: fallocate_chunk: Always initialize struct iomap

In fallocate_chunk, always initialize the iomap before calling
gfs2_iomap_get_alloc: future changes could otherwise cause things like
iomap.flags to leak across calls.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: Bob Peterson <rpeterso@redhat.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index f3c6d78659b1..6d895d39158a 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -877,7 +877,6 @@ static int fallocate_chunk(struct inode *inode, loff_t offset, loff_t len,
         struct gfs2_inode *ip = GFS2_I(inode);
         loff_t end = offset + len;
         struct buffer_head *dibh;
-        struct iomap iomap = { };
         int error;
 
         error = gfs2_meta_inode_buffer(ip, &dibh);
@@ -893,6 +892,8 @@ static int fallocate_chunk(struct inode *inode, loff_t offset, loff_t len,
         }
 
         while (offset < end) {
+                struct iomap iomap = { };
+
                 error = gfs2_iomap_get_alloc(inode, offset, end - offset,
                                              &iomap);
                 if (error)