From: Trond Myklebust <trondmy@gmail.com>
To: linux-nfs@vger.kernel.org
Subject: [PATCH 11/11] NFS: Filter cache invalidation when holding a delegation
Date: Mon, 4 Jun 2018 18:31:29 -0400 [thread overview]
Message-ID: <20180604223129.121477-11-trond.myklebust@hammerspace.com> (raw)
In-Reply-To: <20180604223129.121477-10-trond.myklebust@hammerspace.com>
If the client holds a delegation, then ensure we filter out attempts
to invalidate the size, owner, group owner, or mode unless we made the
change, in which case, check that NFS_INO_REVAL_FORCED is set by the
caller.
Always filter out attempts to invalidate the change attribute and
size, since we are authoritative for those.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
---
fs/nfs/inode.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index bc84ecaae886..73473d9bdfa4 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -195,10 +195,16 @@ bool nfs_check_cache_invalid(struct inode *inode, unsigned long flags)
static void nfs_set_cache_invalid(struct inode *inode, unsigned long flags)
{
struct nfs_inode *nfsi = NFS_I(inode);
- bool have_delegation = nfs_have_delegated_attributes(inode);
+ bool have_delegation = NFS_PROTO(inode)->have_delegation(inode, FMODE_READ);
+
+ if (have_delegation) {
+ if (!(flags & NFS_INO_REVAL_FORCED))
+ flags &= ~NFS_INO_INVALID_OTHER;
+ flags &= ~(NFS_INO_INVALID_CHANGE
+ | NFS_INO_INVALID_SIZE
+ | NFS_INO_REVAL_PAGECACHE);
+ }
- if (have_delegation)
- flags &= ~(NFS_INO_INVALID_CHANGE|NFS_INO_REVAL_PAGECACHE);
if (inode->i_mapping->nrpages == 0)
flags &= ~NFS_INO_INVALID_DATA;
nfsi->cache_validity |= flags;
--
2.17.1
prev parent reply other threads:[~2018-06-04 22:32 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-04 22:31 [PATCH 01/11] NFSv4: Don't request size+change attribute if they are delegated to us Trond Myklebust
2018-06-04 22:31 ` [PATCH 02/11] NFS: Pass the inode down to the getattr() callback Trond Myklebust
2018-06-04 22:31 ` [PATCH 03/11] NFSv4: Don't ask for delegated attributes when revalidating the inode Trond Myklebust
2018-06-04 22:31 ` [PATCH 04/11] NFSv4: Don't ask for delegated attributes when adding a hard link Trond Myklebust
2018-06-04 22:31 ` [PATCH 05/11] NFSv4: Ignore NFS_INO_REVAL_FORCED in nfs4_proc_access Trond Myklebust
2018-06-04 22:31 ` [PATCH 06/11] NFSv4: Ensure the inode is clean when we set a delegation Trond Myklebust
2018-06-04 22:31 ` [PATCH 07/11] NFS: fix up nfs_setattr_update_inode Trond Myklebust
2018-06-04 22:31 ` [PATCH 08/11] NFS: Fix attribute revalidation Trond Myklebust
2018-06-04 22:31 ` [PATCH 09/11] NFS: Improve caching while holding a delegation Trond Myklebust
2018-06-04 22:31 ` [PATCH 10/11] NFS: Ignore NFS_INO_REVAL_FORCED in nfs_check_inode_attributes() Trond Myklebust
2018-06-04 22:31 ` Trond Myklebust [this message]
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