[PATCH 4/4] fuse: writepages: protect secondary requests from fusefile release

[Maxim Patlasov]

All async fuse requests must be supplied with extra reference to a fuse file.
This is necessary to ensure that the fuse file is not released until all
in-flight requests are completed. Fuse secondary writeback requests must
obey this rule as well.

Signed-off-by: Maxim Patlasov <MPatlasov@xxxxxxxxxxxxx>
---
 fs/fuse/file.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 5d323bd..266a792 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -1521,6 +1521,7 @@ static void fuse_writepage_end(struct fuse_conn *fc, struct fuse_req *req)
 			continue;
 		}
 
+		next->ff = fuse_file_get(req->ff);
 		list_add(&next->writepages_entry, &fi->writepages);
 		list_add_tail(&next->list, &fi->queued_writes);
 		fuse_flush_writepages(inode);

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/