From: trondmy@kernel.org
To: linux-nfs@vger.kernel.org
Subject: [PATCH 10/12] NFS: More readdir cleanups
Date: Mon, 2 Nov 2020 13:06:56 -0500
Message-ID: <20201102180658.6218-11-trondmy@kernel.org> (raw)
In-Reply-To: <20201102180658.6218-10-trondmy@kernel.org>
From: Trond Myklebust <trond.myklebust@hammerspace.com>
Remove the redundant caching of the credential in struct
nfs_open_dir_context.
Pass the buffer size as an argument to nfs_readdir_xdr_filler().
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
---
fs/nfs/dir.c | 25 +++++++++++--------------
include/linux/nfs_fs.h | 1 -
2 files changed, 11 insertions(+), 15 deletions(-)
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 272b856147af..564e737ef93e 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -68,7 +68,7 @@ const struct address_space_operations nfs_dir_aops = {
.freepage = nfs_readdir_clear_array,
};
-static struct nfs_open_dir_context *alloc_nfs_open_dir_context(struct inode *dir, const struct cred *cred)
+static struct nfs_open_dir_context *alloc_nfs_open_dir_context(struct inode *dir)
{
struct nfs_inode *nfsi = NFS_I(dir);
struct nfs_open_dir_context *ctx;
@@ -78,7 +78,6 @@ static struct nfs_open_dir_context *alloc_nfs_open_dir_context(struct inode *dir
ctx->attr_gencount = nfsi->attr_gencount;
ctx->dir_cookie = 0;
ctx->dup_cookie = 0;
- ctx->cred = get_cred(cred);
spin_lock(&dir->i_lock);
if (list_empty(&nfsi->open_files) &&
(nfsi->cache_validity & NFS_INO_DATA_INVAL_DEFER))
@@ -96,7 +95,6 @@ static void put_nfs_open_dir_context(struct inode *dir, struct nfs_open_dir_cont
spin_lock(&dir->i_lock);
list_del(&ctx->list);
spin_unlock(&dir->i_lock);
- put_cred(ctx->cred);
kfree(ctx);
}
@@ -113,7 +111,7 @@ nfs_opendir(struct inode *inode, struct file *filp)
nfs_inc_stats(inode, NFSIOS_VFSOPEN);
- ctx = alloc_nfs_open_dir_context(inode, current_cred());
+ ctx = alloc_nfs_open_dir_context(inode);
if (IS_ERR(ctx)) {
res = PTR_ERR(ctx);
goto out;
@@ -464,12 +462,12 @@ int nfs_readdir_search_array(nfs_readdir_descriptor_t *desc)
}
/* Fill a page with xdr information before transferring to the cache page */
-static
-int nfs_readdir_xdr_filler(struct page **pages, nfs_readdir_descriptor_t *desc,
- struct nfs_entry *entry, struct file *file, struct inode *inode)
+static int nfs_readdir_xdr_filler(struct nfs_readdir_descriptor *desc,
+ u64 cookie, struct page **pages,
+ size_t bufsize)
{
- struct nfs_open_dir_context *ctx = file->private_data;
- const struct cred *cred = ctx->cred;
+ struct file *file = desc->file;
+ struct inode *inode = file_inode(file);
unsigned long timestamp, gencount;
int error;
@@ -477,8 +475,8 @@ int nfs_readdir_xdr_filler(struct page **pages, nfs_readdir_descriptor_t *desc,
timestamp = jiffies;
gencount = nfs_inc_attr_generation_counter();
desc->dir_verifier = nfs_save_change_attribute(inode);
- error = NFS_PROTO(inode)->readdir(file_dentry(file), cred, entry->cookie, pages,
- NFS_SERVER(inode)->dtsize, desc->plus);
+ error = NFS_PROTO(inode)->readdir(file_dentry(file), file->f_cred,
+ cookie, pages, bufsize, desc->plus);
if (error < 0) {
/* We requested READDIRPLUS, but the server doesn't grok it */
if (error == -ENOTSUPP && desc->plus) {
@@ -764,7 +762,6 @@ int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page,
{
struct page **pages;
struct nfs_entry entry;
- struct file *file = desc->file;
size_t array_size;
size_t dtsize = NFS_SERVER(inode)->dtsize;
int status = -ENOMEM;
@@ -791,8 +788,8 @@ int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page,
do {
unsigned int pglen;
- status = nfs_readdir_xdr_filler(pages, desc, &entry, file, inode);
-
+ status = nfs_readdir_xdr_filler(desc, entry.cookie,
+ pages, dtsize);
if (status < 0)
break;
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index a2c6455ea3fa..dd6b463dda80 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -88,7 +88,6 @@ struct nfs_open_context {
struct nfs_open_dir_context {
struct list_head list;
- const struct cred *cred;
unsigned long attr_gencount;
__u64 dir_cookie;
__u64 dup_cookie;
--
2.28.0
next prev parent reply index
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-02 18:06 [PATCH 00/12] Readdir enhancements trondmy
2020-11-02 18:06 ` [PATCH 01/12] NFS: Ensure contents of struct nfs_open_dir_context are consistent trondmy
2020-11-02 18:06 ` [PATCH 02/12] NFS: Clean up readdir struct nfs_cache_array trondmy
2020-11-02 18:06 ` [PATCH 03/12] NFS: Clean up nfs_readdir_page_filler() trondmy
2020-11-02 18:06 ` [PATCH 04/12] NFS: Clean up directory array handling trondmy
2020-11-02 18:06 ` [PATCH 05/12] NFS: Don't discard readdir results trondmy
2020-11-02 18:06 ` [PATCH 06/12] NFS: Remove unnecessary kmap in nfs_readdir_xdr_to_array() trondmy
2020-11-02 18:06 ` [PATCH 07/12] NFS: Replace kmap() with kmap_atomic() in nfs_readdir_search_array() trondmy
2020-11-02 18:06 ` [PATCH 08/12] NFS: Simplify struct nfs_cache_array_entry trondmy
2020-11-02 18:06 ` [PATCH 09/12] NFS: Support larger readdir buffers trondmy
2020-11-02 18:06 ` trondmy [this message]
2020-11-02 18:06 ` [PATCH 11/12] NFS: nfs_do_filldir() does not return a value trondmy
2020-11-02 18:06 ` [PATCH 12/12] NFS: Reduce readdir stack usage trondmy
2020-11-03 14:18 ` [PATCH 03/12] NFS: Clean up nfs_readdir_page_filler() Benjamin Coddington
2020-11-03 14:24 ` Benjamin Coddington
2020-11-03 13:35 ` [PATCH 02/12] NFS: Clean up readdir struct nfs_cache_array Benjamin Coddington
2020-11-03 14:09 ` Benjamin Coddington
2020-11-03 14:34 ` Benjamin Coddington
2020-11-02 20:40 ` [PATCH 00/12] Readdir enhancements David Wysochanski
2020-11-02 21:32 ` Trond Myklebust
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