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authorJeffle Xu <jefflexu@linux.alibaba.com>2022-04-25 15:21:26 +0300
committerGao Xiang <hsiangkao@linux.alibaba.com>2022-05-17 19:11:17 +0300
commit324b954ac80cff0d11ddb6bde9b6631e45e98620 (patch)
tree3f8552c1f21b05fdbdb7aba70e62f6438aafa6f3 /fs/cachefiles/interface.c
parentd11b0b043b4008d64abaf1a26eea3dbcd906ee59 (diff)
downloadlinux-324b954ac80cff0d11ddb6bde9b6631e45e98620.tar.xz
cachefiles: notify the user daemon when withdrawing cookie
Notify the user daemon that cookie is going to be withdrawn, providing a hint that the associated anonymous fd can be closed. Be noted that this is only a hint. The user daemon may close the associated anonymous fd when receiving the CLOSE request, then it will receive another anonymous fd when the cookie gets looked up. Or it may ignore the CLOSE request, and keep writing data through the anonymous fd. However the next time the cookie gets looked up, the user daemon will still receive another new anonymous fd. Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com> Acked-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/r/20220425122143.56815-5-jefflexu@linux.alibaba.com Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Diffstat (limited to 'fs/cachefiles/interface.c')
-rw-r--r--fs/cachefiles/interface.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/cachefiles/interface.c b/fs/cachefiles/interface.c
index ae93cee9d25d..a69073a1d3f0 100644
--- a/fs/cachefiles/interface.c
+++ b/fs/cachefiles/interface.c
@@ -362,6 +362,8 @@ static void cachefiles_withdraw_cookie(struct fscache_cookie *cookie)
spin_unlock(&cache->object_list_lock);
}
+ cachefiles_ondemand_clean_object(object);
+
if (object->file) {
cachefiles_begin_secure(cache, &saved_cred);
cachefiles_clean_up_object(object, cache);