diff options
| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2016-12-02 17:15:37 +0300 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2016-12-02 19:42:51 +0300 |
| commit | 1bcf4c5c597d1b1862cf54e65198f1c9e3cad29c (patch) | |
| tree | 1003f3d544bb5437b6a739262b613e65f4a95006 /fs/nfs | |
| parent | 63519fbc67d0d9912c13185b7c1e8c2fcb218cc0 (diff) | |
| download | linux-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')
| -rw-r--r-- | fs/nfs/dir.c | 1 | ||||
| -rw-r--r-- | fs/nfs/inode.c | 21 | ||||
| -rw-r--r-- | fs/nfs/internal.h | 1 |
3 files changed, 18 insertions, 5 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 22835150579a..f5702457c052 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -459,7 +459,6 @@ bool nfs_use_readdirplus(struct inode *dir, struct dir_context *ctx) * use of readdirplus to accelerate any future lookups in the same * directory. */ -static void nfs_advise_use_readdirplus(struct inode *dir) { struct nfs_inode *nfsi = NFS_I(dir); 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)); diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 4622d5f18e35..6b79c2ca9b9a 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -344,6 +344,7 @@ extern struct nfs_client *nfs_init_client(struct nfs_client *clp, const struct nfs_client_initdata *); /* dir.c */ +extern void nfs_advise_use_readdirplus(struct inode *dir); extern void nfs_force_use_readdirplus(struct inode *dir); extern unsigned long nfs_access_cache_count(struct shrinker *shrink, struct shrink_control *sc); |