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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2007-07-03 16:10:55 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2007-07-10 23:40:41 -0400 |
| commit | 412c77cee6d6e73fbe1dc3d67f52163efed33fc4 (patch) | |
| tree | f7ea21158a76f8b3fd6450ee66dcc053f94b3fbd /fs/nfs | |
| parent | 8383e4602c89857ef926f29ca61ac0a83a614443 (diff) | |
| download | kernel-crypto-412c77cee6d6e73fbe1dc3d67f52163efed33fc4.tar.gz kernel-crypto-412c77cee6d6e73fbe1dc3d67f52163efed33fc4.tar.xz kernel-crypto-412c77cee6d6e73fbe1dc3d67f52163efed33fc4.zip | |
NFSv4: Defer inode revalidation when setting up a delegation
Currently we force a synchronous call to __nfs_revalidate_inode() in
nfs_inode_set_delegation(). This not only ensures that we cannot call
nfs_inode_set_delegation from an asynchronous context, but it also slows
down any call to open().
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/delegation.c | 10 | ||||
| -rw-r--r-- | fs/nfs/inode.c | 4 |
2 files changed, 9 insertions, 5 deletions
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index 56f4f6a99d4..20ac403469a 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -124,10 +124,6 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct struct nfs_delegation *delegation; int status = 0; - /* Ensure we first revalidate the attributes and page cache! */ - if ((nfsi->cache_validity & (NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_ATTR))) - __nfs_revalidate_inode(NFS_SERVER(inode), inode); - delegation = kmalloc(sizeof(*delegation), GFP_KERNEL); if (delegation == NULL) return -ENOMEM; @@ -154,6 +150,12 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct status = -EIO; } } + + /* Ensure we revalidate the attributes and page cache! */ + spin_lock(&inode->i_lock); + nfsi->cache_validity |= NFS_INO_REVAL_FORCED; + spin_unlock(&inode->i_lock); + spin_unlock(&clp->cl_lock); kfree(delegation); return status; diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 9d5124166d2..3d9fccf4ef9 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -1072,8 +1072,10 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) invalid &= ~NFS_INO_INVALID_DATA; if (data_stable) invalid &= ~(NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ATIME|NFS_INO_REVAL_PAGECACHE); - if (!nfs_have_delegation(inode, FMODE_READ)) + if (!nfs_have_delegation(inode, FMODE_READ) || + (nfsi->cache_validity & NFS_INO_REVAL_FORCED)) nfsi->cache_validity |= invalid; + nfsi->cache_validity &= ~NFS_INO_REVAL_FORCED; return 0; out_changed: |