cachefiles: narrow the scope of flushed requests when releasing fd

When an anonymous fd is released, only flush the requests
associated with it, rather than all of requests in xarray.

Fixes: 9032b6e8589f ("cachefiles: implement on-demand read")
Signed-off-by: Jia Zhu <zhujia.zj@bytedance.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeffle Xu <jefflexu@linux.alibaba.com>
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Link: https://listman.redhat.com/archives/linux-cachefs/2022-June/006937.html

diff --git a/fs/cachefiles/ondemand.c b/fs/cachefiles/ondemand.c
index a41ae6efc5454523f1e4775fa748da89c206dede..1fee702d55293e9a25b23fe83dc9bb07dbe96ddb 100644 (file)
--- a/fs/cachefiles/ondemand.c
+++ b/fs/cachefiles/ondemand.c
@@ -21,7 +21,8 @@ static int cachefiles_ondemand_fd_release(struct inode *inode,
         * anon_fd.
         */
        xas_for_each(&xas, req, ULONG_MAX) {
-               if (req->msg.opcode == CACHEFILES_OP_READ) {
+               if (req->msg.object_id == object_id &&
+                   req->msg.opcode == CACHEFILES_OP_READ) {
                        req->error = -EIO;
                        complete(&req->done);
                        xas_store(&xas, NULL);