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| author | Trond Myklebust <trond.myklebust@hammerspace.com> | 2018-06-03 13:05:21 -0400 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@hammerspace.com> | 2018-06-04 15:03:58 -0400 |
| commit | 3f0b3cf46e0542ac4b4241c579b944b755d11b67 (patch) | |
| tree | baa85d9d600d133ff43efb69fa6a568951b3534b /fs/nfs | |
| parent | 4ebe83af202284b5ff8c65cb12902fd5518c5c58 (diff) | |
| download | linux-3f0b3cf46e0542ac4b4241c579b944b755d11b67.tar.gz | |
NFS: Filter cache invalidation when holding a delegation
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>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/inode.c | 12 |
1 files 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; |