From: David Howells <dhowells@redhat.com>
To: Trond Myklebust <trondmy@hammerspace.com>,
Anna Schumaker <anna.schumaker@netapp.com>,
Steve French <sfrench@samba.org>,
Dominique Martinet <asmadeus@codewreck.org>
Cc: dhowells@redhat.com, Jeff Layton <jlayton@redhat.com>,
Matthew Wilcox <willy@infradead.org>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Linus Torvalds <torvalds@linux-foundation.org>,
linux-cachefs@redhat.com, linux-afs@lists.infradead.org,
linux-nfs@vger.kernel.org, linux-cifs@vger.kernel.org,
ceph-devel@vger.kernel.org, v9fs-developer@lists.sourceforge.net,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v4 02/10] fscache: Fix fscache_cookie_enabled() to handle NULL cookie
Date: Fri, 29 Oct 2021 15:09:28 +0100 [thread overview]
Message-ID: <163551656895.1877519.8303891885033763947.stgit@warthog.procyon.org.uk> (raw)
In-Reply-To: <163551653404.1877519.12363794970541005441.stgit@warthog.procyon.org.uk>
Fix fscache_cookie_enabled() to handle being given a NULL cookie pointer
(ie. a cookie was not allocated and caching should be ignored).
Signed-off-by: David Howells <dhowells@redhat.com>
---
include/linux/fscache.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/linux/fscache.h b/include/linux/fscache.h
index 32f65c16328a..5e3ddb11715a 100644
--- a/include/linux/fscache.h
+++ b/include/linux/fscache.h
@@ -167,7 +167,8 @@ struct fscache_cookie {
static inline bool fscache_cookie_enabled(struct fscache_cookie *cookie)
{
- return test_bit(FSCACHE_COOKIE_ENABLED, &cookie->flags);
+ return (fscache_cookie_valid(cookie) &&
+ test_bit(FSCACHE_COOKIE_ENABLED, &cookie->flags));
}
/*
next prev parent reply other threads:[~2021-10-29 14:10 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-29 14:08 [PATCH v4 00/10] fscache: Replace and remove old I/O API David Howells
2021-10-29 14:09 ` [PATCH v4 01/10] fscache: Generalise the ->begin_read_operation method David Howells
2021-10-29 14:09 ` David Howells [this message]
2021-10-29 14:09 ` [PATCH v4 03/10] cachefiles: Always indicate we should fill a post-EOF page with zeros David Howells
2021-10-29 14:10 ` [PATCH v4 04/10] fscache: Implement a fallback I/O interface to replace the old API David Howells
2021-10-29 14:10 ` [PATCH v4 05/10] nfs: Move to using the alternate fallback fscache I/O API David Howells
2021-10-29 14:10 ` [PATCH v4 06/10] 9p: Convert to using the netfs helper lib to do reads and caching David Howells
2021-10-29 14:10 ` [PATCH v4 07/10] cifs: Move to using the alternate fallback fscache I/O API David Howells
2021-10-29 14:11 ` [PATCH v4 08/10] fscache: Remove the old " David Howells
2021-10-29 14:11 ` [PATCH v4 09/10] fscache: Remove stats that are no longer used David Howells
2021-10-29 14:11 ` [PATCH v4 10/10] fscache: Update the documentation to reflect I/O API changes David Howells
2021-10-29 16:49 ` [PATCH v4 00/10] fscache: Replace and remove old I/O API Linus Torvalds
2021-10-29 17:55 ` David Howells
2021-10-29 18:17 ` Linus Torvalds
2021-10-29 18:51 ` David Howells
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