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| author |   Scott Mayhew <smayhew@redhat.com> | 2013-07-05 17:49:31 -0400 |
|---|---|---|
| committer |   Trond Myklebust <Trond.Myklebust@netapp.com> | 2013-07-09 17:17:07 -0400 |
| commit | 07b5ce8ef2d87f1914054804720d6facbaa3f4ce (patch) | |
| tree | 9f89c1704d7501d14a3ffd9451f8ee6d4054a3c2 /fs | |
| parent | NFS: Make nfs_attribute_cache_expired() non-static (diff) | |
| download | linux-dev-07b5ce8ef2d87f1914054804720d6facbaa3f4ce.tar.xz linux-dev-07b5ce8ef2d87f1914054804720d6facbaa3f4ce.zip | |
NFS: Make nfs_readdir revalidate less often
Make nfs_readdir revalidate only when we're at the beginning of the directory or
if the cached attributes have expired.
Signed-off-by: Scott Mayhew <smayhew@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/nfs/dir.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index bd7e1cc53b90..e474ca2b2bfe 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -818,7 +818,7 @@ static int nfs_readdir(struct file *file, struct dir_context *ctx) nfs_readdir_descriptor_t my_desc, *desc = &my_desc; struct nfs_open_dir_context *dir_ctx = file->private_data; - int res; + int res = 0; dfprintk(FILE, "NFS: readdir(%s/%s) starting at cookie %llu\n", dentry->d_parent->d_name.name, dentry->d_name.name, @@ -840,7 +840,8 @@ static int nfs_readdir(struct file *file, struct dir_context *ctx) desc->plus = nfs_use_readdirplus(inode, ctx) ? 1 : 0; nfs_block_sillyrename(dentry); - res = nfs_revalidate_mapping(inode, file->f_mapping); + if (ctx->pos == 0 || nfs_attribute_cache_expired(inode)) + res = nfs_revalidate_mapping(inode, file->f_mapping); if (res < 0) goto out; |