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authorTrond Myklebust <trond.myklebust@primarydata.com>2016-12-02 17:15:37 +0300
committerTrond Myklebust <trond.myklebust@primarydata.com>2016-12-02 19:42:51 +0300
commit1bcf4c5c597d1b1862cf54e65198f1c9e3cad29c (patch)
tree1003f3d544bb5437b6a739262b613e65f4a95006 /fs/nfs/inode.c
parent63519fbc67d0d9912c13185b7c1e8c2fcb218cc0 (diff)
downloadlinux-1bcf4c5c597d1b1862cf54e65198f1c9e3cad29c.tar.xz
NFS: Allow getattr to also report readdirplus cache hits
If the use called stat() on an 'ls -l' workload, and the attribute cache was successfully revalidate by READDIRPLUS, then we want to report that back so that the readdir code continues to use readdirplus. Reviewed-by: Benjamin Coddington <bcodding@redhat.com> Tested-by: Benjamin Coddington <bcodding@redhat.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs/inode.c')
-rw-r--r--fs/nfs/inode.c21
1 files changed, 17 insertions, 4 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index d79e0bac836e..75f5a9cb2e66 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -634,15 +634,28 @@ void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr,
}
EXPORT_SYMBOL_GPL(nfs_setattr_update_inode);
-static void nfs_request_parent_use_readdirplus(struct dentry *dentry)
+static void nfs_readdirplus_parent_cache_miss(struct dentry *dentry)
{
struct dentry *parent;
+ if (!nfs_server_capable(d_inode(dentry), NFS_CAP_READDIRPLUS))
+ return;
parent = dget_parent(dentry);
nfs_force_use_readdirplus(d_inode(parent));
dput(parent);
}
+static void nfs_readdirplus_parent_cache_hit(struct dentry *dentry)
+{
+ struct dentry *parent;
+
+ if (!nfs_server_capable(d_inode(dentry), NFS_CAP_READDIRPLUS))
+ return;
+ parent = dget_parent(dentry);
+ nfs_advise_use_readdirplus(d_inode(parent));
+ dput(parent);
+}
+
static bool nfs_need_revalidate_inode(struct inode *inode)
{
if (NFS_I(inode)->cache_validity &
@@ -683,10 +696,10 @@ int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
if (need_atime || nfs_need_revalidate_inode(inode)) {
struct nfs_server *server = NFS_SERVER(inode);
- if (server->caps & NFS_CAP_READDIRPLUS)
- nfs_request_parent_use_readdirplus(dentry);
+ nfs_readdirplus_parent_cache_miss(dentry);
err = __nfs_revalidate_inode(server, inode);
- }
+ } else
+ nfs_readdirplus_parent_cache_hit(dentry);
if (!err) {
generic_fillattr(inode, stat);
stat->ino = nfs_compat_user_ino64(NFS_FILEID(inode));