linux-kernel - [PATCH 01/12] afs: Invalidate cache on server data change

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Date:   Wed, 04 Apr 2018 23:06:47 +0100
From:   David Howells <dhowells@...hat.com>
To:     torvalds@...ux-foundation.org
Cc:     linux-nfs@...r.kernel.org, linux-kernel@...r.kernel.org,
        dhowells@...hat.com, linux-cachefs@...hat.com,
        linux-fsdevel@...r.kernel.org, linux-afs@...ts.infradead.org
Subject: [PATCH 01/12] afs: Invalidate cache on server data change

Invalidate any data stored in fscache for a vnode that changes on the
server so that we don't end up with the cache in a bad state locally.

Signed-off-by: David Howells <dhowells@...hat.com>
---

 fs/afs/inode.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/fs/afs/inode.c b/fs/afs/inode.c
index 6b39d0255b72..42f83fd5a896 100644
--- a/fs/afs/inode.c
+++ b/fs/afs/inode.c
@@ -343,6 +343,10 @@ void afs_zap_data(struct afs_vnode *vnode)
 {
 	_enter("{%x:%u}", vnode->fid.vid, vnode->fid.vnode);
 
+#ifdef CONFIG_AFS_FSCACHE
+	fscache_invalidate(vnode->cache);
+#endif
+
 	/* nuke all the non-dirty pages that aren't locked, mapped or being
 	 * written back in a regular file and completely discard the pages in a
 	 * directory or symlink */