[PATCH v2 3/5] cachefiles: Clean up in cachefiles_commit_tmpfile()

[Zizhi Wo]

Currently, cachefiles_commit_tmpfile() will only be called if object->flags
is set to CACHEFILES_OBJECT_USING_TMPFILE. Only cachefiles_create_file()
and cachefiles_invalidate_cookie() set this flag. Both of these functions
replace object->file with the new tmpfile, and both are called by
fscache_cookie_state_machine(), so there are no concurrency issues.

So the equation "d_backing_inode(dentry) == file_inode(object->file)" in
cachefiles_commit_tmpfile() will never hold true according to the above
conditions. This patch removes this part of the redundant code and does not
involve any other logical changes.

Signed-off-by: Zizhi Wo <wozizhi at huawei.com>
Acked-by: David Howells <dhowells at redhat.com>
---
 fs/cachefiles/namei.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c
index 2b3f9935dbb4..7cf59713f0f7 100644
--- a/fs/cachefiles/namei.c
+++ b/fs/cachefiles/namei.c
@@ -691,11 +691,6 @@ bool cachefiles_commit_tmpfile(struct cachefiles_cache *cache,
 	}
 
 	if (!d_is_negative(dentry)) {
-		if (d_backing_inode(dentry) == file_inode(object->file)) {
-			success = true;
-			goto out_dput;
-		}
-
 		ret = cachefiles_unlink(volume->cache, object, fan, dentry,
 					FSCACHE_OBJECT_IS_STALE);
 		if (ret < 0)
-- 
2.39.2