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-rw-r--r--fs/9p/Kconfig1
-rw-r--r--fs/9p/acl.c11
-rw-r--r--fs/9p/acl.h27
-rw-r--r--fs/9p/cache.c141
-rw-r--r--fs/9p/cache.h97
-rw-r--r--fs/9p/fid.c3
-rw-r--r--fs/9p/v9fs.c22
-rw-r--r--fs/9p/v9fs.h17
-rw-r--r--fs/9p/v9fs_vfs.h11
-rw-r--r--fs/9p/vfs_addr.c266
-rw-r--r--fs/9p/vfs_dentry.c4
-rw-r--r--fs/9p/vfs_dir.c6
-rw-r--r--fs/9p/vfs_file.c32
-rw-r--r--fs/9p/vfs_inode.c29
-rw-r--r--fs/9p/vfs_inode_dotl.c11
-rw-r--r--fs/9p/vfs_super.c14
-rw-r--r--fs/9p/xattr.c10
-rw-r--r--fs/9p/xattr.h29
18 files changed, 256 insertions, 475 deletions
diff --git a/fs/9p/Kconfig b/fs/9p/Kconfig
index 09fd4a185fd2..d7bc93447c85 100644
--- a/fs/9p/Kconfig
+++ b/fs/9p/Kconfig
@@ -2,6 +2,7 @@
config 9P_FS
tristate "Plan 9 Resource Sharing Support (9P2000)"
depends on INET && NET_9P
+ select NETFS_SUPPORT
help
If you say Y here, you will get experimental support for
Plan 9 resource sharing via the 9P2000 protocol.
diff --git a/fs/9p/acl.c b/fs/9p/acl.c
index c381499f5416..4dac4a0dc5f4 100644
--- a/fs/9p/acl.c
+++ b/fs/9p/acl.c
@@ -1,15 +1,7 @@
+// SPDX-License-Identifier: LGPL-2.1
/*
* Copyright IBM Corporation, 2010
* Author Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2.1 of the GNU Lesser General Public License
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
*/
#include <linux/module.h>
@@ -123,6 +115,7 @@ static int v9fs_set_acl(struct p9_fid *fid, int type, struct posix_acl *acl)
char *name;
size_t size;
void *buffer;
+
if (!acl)
return 0;
diff --git a/fs/9p/acl.h b/fs/9p/acl.h
index d43c8949e807..ce5175d463dd 100644
--- a/fs/9p/acl.h
+++ b/fs/9p/acl.h
@@ -1,28 +1,21 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
/*
* Copyright IBM Corporation, 2010
* Author Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2.1 of the GNU Lesser General Public License
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
*/
#ifndef FS_9P_ACL_H
#define FS_9P_ACL_H
#ifdef CONFIG_9P_FS_POSIX_ACL
-extern int v9fs_get_acl(struct inode *, struct p9_fid *);
-extern struct posix_acl *v9fs_iop_get_acl(struct inode *inode, int type, bool rcu);
-extern int v9fs_acl_chmod(struct inode *, struct p9_fid *);
-extern int v9fs_set_create_acl(struct inode *, struct p9_fid *,
- struct posix_acl *, struct posix_acl *);
-extern int v9fs_acl_mode(struct inode *dir, umode_t *modep,
- struct posix_acl **dpacl, struct posix_acl **pacl);
-extern void v9fs_put_acl(struct posix_acl *dacl, struct posix_acl *acl);
+int v9fs_get_acl(struct inode *inode, struct p9_fid *fid);
+struct posix_acl *v9fs_iop_get_acl(struct inode *inode, int type,
+ bool rcu);
+int v9fs_acl_chmod(struct inode *inode, struct p9_fid *fid);
+int v9fs_set_create_acl(struct inode *inode, struct p9_fid *fid,
+ struct posix_acl *dacl, struct posix_acl *acl);
+int v9fs_acl_mode(struct inode *dir, umode_t *modep,
+ struct posix_acl **dpacl, struct posix_acl **pacl);
+void v9fs_put_acl(struct posix_acl *dacl, struct posix_acl *acl);
#else
#define v9fs_iop_get_acl NULL
static inline int v9fs_get_acl(struct inode *inode, struct p9_fid *fid)
diff --git a/fs/9p/cache.c b/fs/9p/cache.c
index 1769a44f4819..f2ba131cede1 100644
--- a/fs/9p/cache.c
+++ b/fs/9p/cache.c
@@ -19,8 +19,8 @@
#define CACHETAG_LEN 11
struct fscache_netfs v9fs_cache_netfs = {
- .name = "9p",
- .version = 0,
+ .name = "9p",
+ .version = 0,
};
/*
@@ -199,140 +199,3 @@ void v9fs_cache_inode_reset_cookie(struct inode *inode)
mutex_unlock(&v9inode->fscache_lock);
}
-
-int __v9fs_fscache_release_page(struct page *page, gfp_t gfp)
-{
- struct inode *inode = page->mapping->host;
- struct v9fs_inode *v9inode = V9FS_I(inode);
-
- BUG_ON(!v9inode->fscache);
-
- return fscache_maybe_release_page(v9inode->fscache, page, gfp);
-}
-
-void __v9fs_fscache_invalidate_page(struct page *page)
-{
- struct inode *inode = page->mapping->host;
- struct v9fs_inode *v9inode = V9FS_I(inode);
-
- BUG_ON(!v9inode->fscache);
-
- if (PageFsCache(page)) {
- fscache_wait_on_page_write(v9inode->fscache, page);
- BUG_ON(!PageLocked(page));
- fscache_uncache_page(v9inode->fscache, page);
- }
-}
-
-static void v9fs_vfs_readpage_complete(struct page *page, void *data,
- int error)
-{
- if (!error)
- SetPageUptodate(page);
-
- unlock_page(page);
-}
-
-/*
- * __v9fs_readpage_from_fscache - read a page from cache
- *
- * Returns 0 if the pages are in cache and a BIO is submitted,
- * 1 if the pages are not in cache and -error otherwise.
- */
-
-int __v9fs_readpage_from_fscache(struct inode *inode, struct page *page)
-{
- int ret;
- const struct v9fs_inode *v9inode = V9FS_I(inode);
-
- p9_debug(P9_DEBUG_FSC, "inode %p page %p\n", inode, page);
- if (!v9inode->fscache)
- return -ENOBUFS;
-
- ret = fscache_read_or_alloc_page(v9inode->fscache,
- page,
- v9fs_vfs_readpage_complete,
- NULL,
- GFP_KERNEL);
- switch (ret) {
- case -ENOBUFS:
- case -ENODATA:
- p9_debug(P9_DEBUG_FSC, "page/inode not in cache %d\n", ret);
- return 1;
- case 0:
- p9_debug(P9_DEBUG_FSC, "BIO submitted\n");
- return ret;
- default:
- p9_debug(P9_DEBUG_FSC, "ret %d\n", ret);
- return ret;
- }
-}
-
-/*
- * __v9fs_readpages_from_fscache - read multiple pages from cache
- *
- * Returns 0 if the pages are in cache and a BIO is submitted,
- * 1 if the pages are not in cache and -error otherwise.
- */
-
-int __v9fs_readpages_from_fscache(struct inode *inode,
- struct address_space *mapping,
- struct list_head *pages,
- unsigned *nr_pages)
-{
- int ret;
- const struct v9fs_inode *v9inode = V9FS_I(inode);
-
- p9_debug(P9_DEBUG_FSC, "inode %p pages %u\n", inode, *nr_pages);
- if (!v9inode->fscache)
- return -ENOBUFS;
-
- ret = fscache_read_or_alloc_pages(v9inode->fscache,
- mapping, pages, nr_pages,
- v9fs_vfs_readpage_complete,
- NULL,
- mapping_gfp_mask(mapping));
- switch (ret) {
- case -ENOBUFS:
- case -ENODATA:
- p9_debug(P9_DEBUG_FSC, "pages/inodes not in cache %d\n", ret);
- return 1;
- case 0:
- BUG_ON(!list_empty(pages));
- BUG_ON(*nr_pages != 0);
- p9_debug(P9_DEBUG_FSC, "BIO submitted\n");
- return ret;
- default:
- p9_debug(P9_DEBUG_FSC, "ret %d\n", ret);
- return ret;
- }
-}
-
-/*
- * __v9fs_readpage_to_fscache - write a page to the cache
- *
- */
-
-void __v9fs_readpage_to_fscache(struct inode *inode, struct page *page)
-{
- int ret;
- const struct v9fs_inode *v9inode = V9FS_I(inode);
-
- p9_debug(P9_DEBUG_FSC, "inode %p page %p\n", inode, page);
- ret = fscache_write_page(v9inode->fscache, page,
- i_size_read(&v9inode->vfs_inode), GFP_KERNEL);
- p9_debug(P9_DEBUG_FSC, "ret = %d\n", ret);
- if (ret != 0)
- v9fs_uncache_page(inode, page);
-}
-
-/*
- * wait for a page to complete writing to the cache
- */
-void __v9fs_fscache_wait_on_page_write(struct inode *inode, struct page *page)
-{
- const struct v9fs_inode *v9inode = V9FS_I(inode);
- p9_debug(P9_DEBUG_FSC, "inode %p page %p\n", inode, page);
- if (PageFsCache(page))
- fscache_wait_on_page_write(v9inode->fscache, page);
-}
diff --git a/fs/9p/cache.h b/fs/9p/cache.h
index 00f107af443e..7480b4b49fea 100644
--- a/fs/9p/cache.h
+++ b/fs/9p/cache.h
@@ -7,9 +7,10 @@
#ifndef _9P_CACHE_H
#define _9P_CACHE_H
-#ifdef CONFIG_9P_FSCACHE
+#define FSCACHE_USE_NEW_IO_API
#include <linux/fscache.h>
-#include <linux/spinlock.h>
+
+#ifdef CONFIG_9P_FSCACHE
extern struct fscache_netfs v9fs_cache_netfs;
extern const struct fscache_cookie_def v9fs_cache_session_index_def;
@@ -27,64 +28,6 @@ extern void v9fs_cache_inode_reset_cookie(struct inode *inode);
extern int __v9fs_cache_register(void);
extern void __v9fs_cache_unregister(void);
-extern int __v9fs_fscache_release_page(struct page *page, gfp_t gfp);
-extern void __v9fs_fscache_invalidate_page(struct page *page);
-extern int __v9fs_readpage_from_fscache(struct inode *inode,
- struct page *page);
-extern int __v9fs_readpages_from_fscache(struct inode *inode,
- struct address_space *mapping,
- struct list_head *pages,
- unsigned *nr_pages);
-extern void __v9fs_readpage_to_fscache(struct inode *inode, struct page *page);
-extern void __v9fs_fscache_wait_on_page_write(struct inode *inode,
- struct page *page);
-
-static inline int v9fs_fscache_release_page(struct page *page,
- gfp_t gfp)
-{
- return __v9fs_fscache_release_page(page, gfp);
-}
-
-static inline void v9fs_fscache_invalidate_page(struct page *page)
-{
- __v9fs_fscache_invalidate_page(page);
-}
-
-static inline int v9fs_readpage_from_fscache(struct inode *inode,
- struct page *page)
-{
- return __v9fs_readpage_from_fscache(inode, page);
-}
-
-static inline int v9fs_readpages_from_fscache(struct inode *inode,
- struct address_space *mapping,
- struct list_head *pages,
- unsigned *nr_pages)
-{
- return __v9fs_readpages_from_fscache(inode, mapping, pages,
- nr_pages);
-}
-
-static inline void v9fs_readpage_to_fscache(struct inode *inode,
- struct page *page)
-{
- if (PageFsCache(page))
- __v9fs_readpage_to_fscache(inode, page);
-}
-
-static inline void v9fs_uncache_page(struct inode *inode, struct page *page)
-{
- struct v9fs_inode *v9inode = V9FS_I(inode);
- fscache_uncache_page(v9inode->fscache, page);
- BUG_ON(PageFsCache(page));
-}
-
-static inline void v9fs_fscache_wait_on_page_write(struct inode *inode,
- struct page *page)
-{
- return __v9fs_fscache_wait_on_page_write(inode, page);
-}
-
#else /* CONFIG_9P_FSCACHE */
static inline void v9fs_cache_inode_get_cookie(struct inode *inode)
@@ -99,39 +42,5 @@ static inline void v9fs_cache_inode_set_cookie(struct inode *inode, struct file
{
}
-static inline int v9fs_fscache_release_page(struct page *page,
- gfp_t gfp) {
- return 1;
-}
-
-static inline void v9fs_fscache_invalidate_page(struct page *page) {}
-
-static inline int v9fs_readpage_from_fscache(struct inode *inode,
- struct page *page)
-{
- return -ENOBUFS;
-}
-
-static inline int v9fs_readpages_from_fscache(struct inode *inode,
- struct address_space *mapping,
- struct list_head *pages,
- unsigned *nr_pages)
-{
- return -ENOBUFS;
-}
-
-static inline void v9fs_readpage_to_fscache(struct inode *inode,
- struct page *page)
-{}
-
-static inline void v9fs_uncache_page(struct inode *inode, struct page *page)
-{}
-
-static inline void v9fs_fscache_wait_on_page_write(struct inode *inode,
- struct page *page)
-{
- return;
-}
-
#endif /* CONFIG_9P_FSCACHE */
#endif /* _9P_CACHE_H */
diff --git a/fs/9p/fid.c b/fs/9p/fid.c
index b8863dd0de5c..6aab046c98e2 100644
--- a/fs/9p/fid.c
+++ b/fs/9p/fid.c
@@ -103,6 +103,7 @@ static struct p9_fid *v9fs_fid_find(struct dentry *dentry, kuid_t uid, int any)
/* we'll recheck under lock if there's anything to look in */
if (!ret && dentry->d_fsdata) {
struct hlist_head *h = (struct hlist_head *)&dentry->d_fsdata;
+
spin_lock(&dentry->d_lock);
hlist_for_each_entry(fid, h, dlist) {
if (any || uid_eq(fid->uid, uid)) {
@@ -185,7 +186,7 @@ static struct p9_fid *v9fs_fid_lookup_with_uid(struct dentry *dentry,
return ERR_PTR(-EPERM);
if (v9fs_proto_dotu(v9ses) || v9fs_proto_dotl(v9ses))
- uname = NULL;
+ uname = NULL;
else
uname = v9ses->uname;
diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c
index 2e0fa7c932db..e32dd5f7721b 100644
--- a/fs/9p/v9fs.c
+++ b/fs/9p/v9fs.c
@@ -1,7 +1,5 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
- * linux/fs/9p/v9fs.c
- *
* This file contains functions assisting in mapping VFS to 9P2000
*
* Copyright (C) 2004-2008 by Eric Van Hensbergen <ericvh@gmail.com>
@@ -166,7 +164,7 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
substring_t args[MAX_OPT_ARGS];
char *p;
int option = 0;
- char *s, *e;
+ char *s;
int ret = 0;
/* setup defaults */
@@ -190,8 +188,10 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
while ((p = strsep(&options, ",")) != NULL) {
int token, r;
+
if (!*p)
continue;
+
token = match_token(p, tokens, args);
switch (token) {
case Opt_debug:
@@ -321,12 +321,13 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
v9ses->flags |= V9FS_ACCESS_CLIENT;
} else {
uid_t uid;
+
v9ses->flags |= V9FS_ACCESS_SINGLE;
- uid = simple_strtoul(s, &e, 10);
- if (*e != '\0') {
- ret = -EINVAL;
- pr_info("Unknown access argument %s\n",
- s);
+ r = kstrtouint(s, 10, &uid);
+ if (r) {
+ ret = r;
+ pr_info("Unknown access argument %s: %d\n",
+ s, r);
kfree(s);
continue;
}
@@ -520,7 +521,8 @@ void v9fs_session_close(struct v9fs_session_info *v9ses)
* mark transport as disconnected and cancel all pending requests.
*/
-void v9fs_session_cancel(struct v9fs_session_info *v9ses) {
+void v9fs_session_cancel(struct v9fs_session_info *v9ses)
+{
p9_debug(P9_DEBUG_ERROR, "cancel session %p\n", v9ses);
p9_client_disconnect(v9ses->clnt);
}
@@ -659,6 +661,7 @@ static void v9fs_destroy_inode_cache(void)
static int v9fs_cache_register(void)
{
int ret;
+
ret = v9fs_init_inode_cache();
if (ret < 0)
return ret;
@@ -686,6 +689,7 @@ static void v9fs_cache_unregister(void)
static int __init init_v9fs(void)
{
int err;
+
pr_info("Installing v9fs 9p2000 file system support\n");
/* TODO: Setup list of registered trasnport modules */
diff --git a/fs/9p/v9fs.h b/fs/9p/v9fs.h
index 4ca56c5dd637..1647a8e63671 100644
--- a/fs/9p/v9fs.h
+++ b/fs/9p/v9fs.h
@@ -124,15 +124,24 @@ static inline struct v9fs_inode *V9FS_I(const struct inode *inode)
return container_of(inode, struct v9fs_inode, vfs_inode);
}
+static inline struct fscache_cookie *v9fs_inode_cookie(struct v9fs_inode *v9inode)
+{
+#ifdef CONFIG_9P_FSCACHE
+ return v9inode->fscache;
+#else
+ return NULL;
+#endif
+}
+
extern int v9fs_show_options(struct seq_file *m, struct dentry *root);
-struct p9_fid *v9fs_session_init(struct v9fs_session_info *, const char *,
- char *);
+struct p9_fid *v9fs_session_init(struct v9fs_session_info *v9ses,
+ const char *dev_name, char *data);
extern void v9fs_session_close(struct v9fs_session_info *v9ses);
extern void v9fs_session_cancel(struct v9fs_session_info *v9ses);
extern void v9fs_session_begin_cancel(struct v9fs_session_info *v9ses);
extern struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
- unsigned int flags);
+ unsigned int flags);
extern int v9fs_vfs_unlink(struct inode *i, struct dentry *d);
extern int v9fs_vfs_rmdir(struct inode *i, struct dentry *d);
extern int v9fs_vfs_rename(struct user_namespace *mnt_userns,
@@ -158,7 +167,7 @@ extern struct inode *v9fs_inode_from_fid_dotl(struct v9fs_session_info *v9ses,
static inline struct v9fs_session_info *v9fs_inode2v9ses(struct inode *inode)
{
- return (inode->i_sb->s_fs_info);
+ return inode->i_sb->s_fs_info;
}
static inline struct v9fs_session_info *v9fs_dentry2v9ses(struct dentry *dentry)
diff --git a/fs/9p/v9fs_vfs.h b/fs/9p/v9fs_vfs.h
index d44ade76966a..bc417da7e9c1 100644
--- a/fs/9p/v9fs_vfs.h
+++ b/fs/9p/v9fs_vfs.h
@@ -44,9 +44,10 @@ extern struct kmem_cache *v9fs_inode_cache;
struct inode *v9fs_alloc_inode(struct super_block *sb);
void v9fs_free_inode(struct inode *inode);
-struct inode *v9fs_get_inode(struct super_block *sb, umode_t mode, dev_t);
+struct inode *v9fs_get_inode(struct super_block *sb, umode_t mode,
+ dev_t rdev);
int v9fs_init_inode(struct v9fs_session_info *v9ses,
- struct inode *inode, umode_t mode, dev_t);
+ struct inode *inode, umode_t mode, dev_t rdev);
void v9fs_evict_inode(struct inode *inode);
ino_t v9fs_qid2ino(struct p9_qid *qid);
void v9fs_stat2inode(struct p9_wstat *stat, struct inode *inode,
@@ -59,8 +60,8 @@ void v9fs_inode2stat(struct inode *inode, struct p9_wstat *stat);
int v9fs_uflags2omode(int uflags, int extended);
void v9fs_blank_wstat(struct p9_wstat *wstat);
-int v9fs_vfs_setattr_dotl(struct user_namespace *, struct dentry *,
- struct iattr *);
+int v9fs_vfs_setattr_dotl(struct user_namespace *mnt_userns,
+ struct dentry *dentry, struct iattr *iattr);
int v9fs_file_fsync_dotl(struct file *filp, loff_t start, loff_t end,
int datasync);
int v9fs_refresh_inode(struct p9_fid *fid, struct inode *inode);
@@ -68,9 +69,9 @@ int v9fs_refresh_inode_dotl(struct p9_fid *fid, struct inode *inode);
static inline void v9fs_invalidate_inode_attr(struct inode *inode)
{
struct v9fs_inode *v9inode;
+
v9inode = V9FS_I(inode);
v9inode->cache_validity |= V9FS_INO_INVALID_ATTR;
- return;
}
int v9fs_open_to_dotl_flags(int flags);
diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c
index 1c4f1b39cc95..fac918ccb305 100644
--- a/fs/9p/vfs_addr.c
+++ b/fs/9p/vfs_addr.c
@@ -1,7 +1,5 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
- * linux/fs/9p/vfs_addr.c
- *
* This file contians vfs address (mmap) ops for 9P2000.
*
* Copyright (C) 2005 by Eric Van Hensbergen <ericvh@gmail.com>
@@ -19,7 +17,7 @@
#include <linux/idr.h>
#include <linux/sched.h>
#include <linux/uio.h>
-#include <linux/bvec.h>
+#include <linux/netfs.h>
#include <net/9p/9p.h>
#include <net/9p/client.h>
@@ -29,88 +27,99 @@
#include "fid.h"
/**
- * v9fs_fid_readpage - read an entire page in from 9P
- * @data: Opaque pointer to the fid being read
- * @page: structure to page
- *
+ * v9fs_req_issue_op - Issue a read from 9P
+ * @subreq: The read to make
*/
-static int v9fs_fid_readpage(void *data, struct page *page)
+static void v9fs_req_issue_op(struct netfs_read_subrequest *subreq)
{
- struct p9_fid *fid = data;
- struct inode *inode = page->mapping->host;
- struct bio_vec bvec = {.bv_page = page, .bv_len = PAGE_SIZE};
+ struct netfs_read_request *rreq = subreq->rreq;
+ struct p9_fid *fid = rreq->netfs_priv;
struct iov_iter to;
- int retval, err;
+ loff_t pos = subreq->start + subreq->transferred;
+ size_t len = subreq->len - subreq->transferred;
+ int total, err;
- p9_debug(P9_DEBUG_VFS, "\n");
+ iov_iter_xarray(&to, READ, &rreq->mapping->i_pages, pos, len);
- BUG_ON(!PageLocked(page));
+ total = p9_client_read(fid, pos, &to, &err);
+ netfs_subreq_terminated(subreq, err ?: total, false);
+}
- retval = v9fs_readpage_from_fscache(inode, page);
- if (retval == 0)
- return retval;
+/**
+ * v9fs_init_rreq - Initialise a read request
+ * @rreq: The read request
+ * @file: The file being read from
+ */
+static void v9fs_init_rreq(struct netfs_read_request *rreq, struct file *file)
+{
+ struct p9_fid *fid = file->private_data;
- iov_iter_bvec(&to, READ, &bvec, 1, PAGE_SIZE);
+ refcount_inc(&fid->count);
+ rreq->netfs_priv = fid;
+}
- retval = p9_client_read(fid, page_offset(page), &to, &err);
- if (err) {
- v9fs_uncache_page(inode, page);
- retval = err;
- goto done;
- }
+/**
+ * v9fs_req_cleanup - Cleanup request initialized by v9fs_init_rreq
+ * @mapping: unused mapping of request to cleanup
+ * @priv: private data to cleanup, a fid, guaranted non-null.
+ */
+static void v9fs_req_cleanup(struct address_space *mapping, void *priv)
+{
+ struct p9_fid *fid = priv;
- zero_user(page, retval, PAGE_SIZE - retval);
- flush_dcache_page(page);
- SetPageUptodate(page);
+ p9_client_clunk(fid);
+}
- v9fs_readpage_to_fscache(inode, page);
- retval = 0;
+/**
+ * v9fs_is_cache_enabled - Determine if caching is enabled for an inode
+ * @inode: The inode to check
+ */
+static bool v9fs_is_cache_enabled(struct inode *inode)
+{
+ struct fscache_cookie *cookie = v9fs_inode_cookie(V9FS_I(inode));
-done:
- unlock_page(page);
- return retval;
+ return fscache_cookie_enabled(cookie) && !hlist_empty(&cookie->backing_objects);
}
/**
- * v9fs_vfs_readpage - read an entire page in from 9P
- *
- * @filp: file being read
- * @page: structure to page
- *
+ * v9fs_begin_cache_operation - Begin a cache operation for a read
+ * @rreq: The read request
*/
-
-static int v9fs_vfs_readpage(struct file *filp, struct page *page)
+static int v9fs_begin_cache_operation(struct netfs_read_request *rreq)
{
- return v9fs_fid_readpage(filp->private_data, page);
+ struct fscache_cookie *cookie = v9fs_inode_cookie(V9FS_I(rreq->inode));
+
+ return fscache_begin_read_operation(rreq, cookie);
}
+static const struct netfs_read_request_ops v9fs_req_ops = {
+ .init_rreq = v9fs_init_rreq,
+ .is_cache_enabled = v9fs_is_cache_enabled,
+ .begin_cache_operation = v9fs_begin_cache_operation,
+ .issue_op = v9fs_req_issue_op,
+ .cleanup = v9fs_req_cleanup,
+};
+
/**
- * v9fs_vfs_readpages - read a set of pages from 9P
- *
- * @filp: file being read
- * @mapping: the address space
- * @pages: list of pages to read
- * @nr_pages: count of pages to read
+ * v9fs_vfs_readpage - read an entire page in from 9P
+ * @file: file being read
+ * @page: structure to page
*
*/
-
-static int v9fs_vfs_readpages(struct file *filp, struct address_space *mapping,
- struct list_head *pages, unsigned nr_pages)
+static int v9fs_vfs_readpage(struct file *file, struct page *page)
{
- int ret = 0;
- struct inode *inode;
-
- inode = mapping->host;
- p9_debug(P9_DEBUG_VFS, "inode: %p file: %p\n", inode, filp);
+ struct folio *folio = page_folio(page);
- ret = v9fs_readpages_from_fscache(inode, mapping, pages, &nr_pages);
- if (ret == 0)
- return ret;
+ return netfs_readpage(file, folio, &v9fs_req_ops, NULL);
+}
- ret = read_cache_pages(mapping, pages, v9fs_fid_readpage,
- filp->private_data);
- p9_debug(P9_DEBUG_VFS, " = %d\n", ret);
- return ret;
+/**
+ * v9fs_vfs_readahead - read a set of pages from 9P
+ * @ractl: The readahead parameters
+ */
+static void v9fs_vfs_readahead(struct readahead_control *ractl)
+{
+ netfs_readahead(ractl, &v9fs_req_ops, NULL);
}
/**
@@ -123,9 +132,18 @@ static int v9fs_vfs_readpages(struct file *filp, struct address_space *mapping,
static int v9fs_release_page(struct page *page, gfp_t gfp)
{
- if (PagePrivate(page))
+ struct folio *folio = page_folio(page);
+
+ if (folio_test_private(folio))
return 0;
- return v9fs_fscache_release_page(page, gfp);
+#ifdef CONFIG_9P_FSCACHE
+ if (folio_test_fscache(folio)) {
+ if (!(gfp & __GFP_DIRECT_RECLAIM) || !(gfp & __GFP_FS))
+ return 0;
+ folio_wait_fscache(folio);
+ }
+#endif
+ return 1;
}
/**
@@ -138,63 +156,58 @@ static int v9fs_release_page(struct page *page, gfp_t gfp)
static void v9fs_invalidate_page(struct page *page, unsigned int offset,
unsigned int length)
{
- /*
- * If called with zero offset, we should release
- * the private state assocated with the page
- */
- if (offset == 0 && length == PAGE_SIZE)
- v9fs_fscache_invalidate_page(page);
+ struct folio *folio = page_folio(page);
+
+ folio_wait_fscache(folio);
}
-static int v9fs_vfs_writepage_locked(struct page *page)
+static int v9fs_vfs_write_folio_locked(struct folio *folio)
{
- struct inode *inode = page->mapping->host;
+ struct inode *inode = folio_inode(folio);
struct v9fs_inode *v9inode = V9FS_I(inode);
- loff_t size = i_size_read(inode);
+ loff_t start = folio_pos(folio);
+ loff_t i_size = i_size_read(inode);
struct iov_iter from;
- struct bio_vec bvec;
- int err, len;
+ size_t len = folio_size(folio);
+ int err;
- if (page->index == size >> PAGE_SHIFT)
- len = size & ~PAGE_MASK;
- else
- len = PAGE_SIZE;
+ if (start >= i_size)
+ return 0; /* Simultaneous truncation occurred */
- bvec.bv_page = page;
- bvec.bv_offset = 0;
- bvec.bv_len = len;
- iov_iter_bvec(&from, WRITE, &bvec, 1, len);
+ len = min_t(loff_t, i_size - start, len);
+
+ iov_iter_xarray(&from, WRITE, &folio_mapping(folio)->i_pages, start, len);
/* We should have writeback_fid always set */
BUG_ON(!v9inode->writeback_fid);
- set_page_writeback(page);
+ folio_start_writeback(folio);
- p9_client_write(v9inode->writeback_fid, page_offset(page), &from, &err);
+ p9_client_write(v9inode->writeback_fid, start, &from, &err);
- end_page_writeback(page);
+ folio_end_writeback(folio);
return err;
}
static int v9fs_vfs_writepage(struct page *page, struct writeback_control *wbc)
{
+ struct folio *folio = page_folio(page);
int retval;
- p9_debug(P9_DEBUG_VFS, "page %p\n", page);
+ p9_debug(P9_DEBUG_VFS, "folio %p\n", folio);
- retval = v9fs_vfs_writepage_locked(page);
+ retval = v9fs_vfs_write_folio_locked(folio);
if (retval < 0) {
if (retval == -EAGAIN) {
- redirty_page_for_writepage(wbc, page);
+ folio_redirty_for_writepage(wbc, folio);
retval = 0;
} else {
- SetPageError(page);
- mapping_set_error(page->mapping, retval);
+ mapping_set_error(folio_mapping(folio), retval);
}
} else
retval = 0;
- unlock_page(page);
+ folio_unlock(folio);
return retval;
}
@@ -207,15 +220,15 @@ static int v9fs_vfs_writepage(struct page *page, struct writeback_control *wbc)
static int v9fs_launder_page(struct page *page)
{
+ struct folio *folio = page_folio(page);
int retval;
- struct inode *inode = page->mapping->host;
- v9fs_fscache_wait_on_page_write(inode, page);
- if (clear_page_dirty_for_io(page)) {
- retval = v9fs_vfs_writepage_locked(page);
+ if (folio_clear_dirty_for_io(folio)) {
+ retval = v9fs_vfs_write_folio_locked(folio);
if (retval)
return retval;
}
+ folio_wait_fscache(folio);
return 0;
}
@@ -242,11 +255,13 @@ v9fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
loff_t pos = iocb->ki_pos;
ssize_t n;
int err = 0;
+
if (iov_iter_rw(iter) == WRITE) {
n = p9_client_write(file->private_data, pos, iter, &err);
if (n) {
struct inode *inode = file_inode(file);
loff_t i_size = i_size_read(inode);
+
if (pos + n > i_size)
inode_add_bytes(inode, pos + n - i_size);
}
@@ -257,58 +272,49 @@ v9fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
}
static int v9fs_write_begin(struct file *filp, struct address_space *mapping,
- loff_t pos, unsigned len, unsigned flags,
- struct page **pagep, void **fsdata)
+ loff_t pos, unsigned int len, unsigned int flags,
+ struct page **subpagep, void **fsdata)
{
- int retval = 0;
- struct page *page;
- struct v9fs_inode *v9inode;
- pgoff_t index = pos >> PAGE_SHIFT;
- struct inode *inode = mapping->host;
-
+ int retval;
+ struct folio *folio;
+ struct v9fs_inode *v9inode = V9FS_I(mapping->host);
p9_debug(P9_DEBUG_VFS, "filp %p, mapping %p\n", filp, mapping);
- v9inode = V9FS_I(inode);
-start:
- page = grab_cache_page_write_begin(mapping, index, flags);
- if (!page) {
- retval = -ENOMEM;
- goto out;
- }
BUG_ON(!v9inode->writeback_fid);
- if (PageUptodate(page))
- goto out;
- if (len == PAGE_SIZE)
- goto out;
+ /* Prefetch area to be written into the cache if we're caching this
+ * file. We need to do this before we get a lock on the page in case
+ * there's more than one writer competing for the same cache block.
+ */
+ retval = netfs_write_begin(filp, mapping, pos, len, flags, &folio, fsdata,
+ &v9fs_req_ops, NULL);
+ if (retval < 0)
+ return retval;
- retval = v9fs_fid_readpage(v9inode->writeback_fid, page);
- put_page(page);
- if (!retval)
- goto start;
-out:
- *pagep = page;
+ *subpagep = &folio->page;
return retval;
}
static int v9fs_write_end(struct file *filp, struct address_space *mapping,
- loff_t pos, unsigned len, unsigned copied,
- struct page *page, void *fsdata)
+ loff_t pos, unsigned int len, unsigned int copied,
+ struct page *subpage, void *fsdata)
{
loff_t last_pos = pos + copied;
- struct inode *inode = page->mapping->host;
+ struct folio *folio = page_folio(subpage);
+ struct inode *inode = mapping->host;
p9_debug(P9_DEBUG_VFS, "filp %p, mapping %p\n", filp, mapping);
- if (!PageUptodate(page)) {
+ if (!folio_test_uptodate(folio)) {
if (unlikely(copied < len)) {
copied = 0;
goto out;
- } else if (len == PAGE_SIZE) {
- SetPageUptodate(page);
}
+
+ folio_mark_uptodate(folio);
}
+
/*
* No need to use i_size_read() here, the i_size
* cannot change under us because we hold the i_mutex.
@@ -317,10 +323,10 @@ static int v9fs_write_end(struct file *filp, struct address_space *mapping,
inode_add_bytes(inode, last_pos - inode->i_size);
i_size_write(inode, last_pos);
}
- set_page_dirty(page);
+ folio_mark_dirty(folio);
out:
- unlock_page(page);
- put_page(page);
+ folio_unlock(folio);
+ folio_put(folio);
return copied;
}
@@ -328,7 +334,7 @@ out:
const struct address_space_operations v9fs_addr_operations = {
.readpage = v9fs_vfs_readpage,
- .readpages = v9fs_vfs_readpages,
+ .readahead = v9fs_vfs_readahead,
.set_page_dirty = __set_page_dirty_nobuffers,
.writepage = v9fs_vfs_writepage,
.write_begin = v9fs_write_begin,
diff --git a/fs/9p/vfs_dentry.c b/fs/9p/vfs_dentry.c
index 4b4292123b3d..1c609e99d280 100644
--- a/fs/9p/vfs_dentry.c
+++ b/fs/9p/vfs_dentry.c
@@ -1,7 +1,5 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
- * linux/fs/9p/vfs_dentry.c
- *
* This file contians vfs dentry ops for the 9P2000 protocol.
*
* Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
@@ -52,6 +50,7 @@ static int v9fs_cached_dentry_delete(const struct dentry *dentry)
static void v9fs_dentry_release(struct dentry *dentry)
{
struct hlist_node *p, *n;
+
p9_debug(P9_DEBUG_VFS, " dentry: %pd (%p)\n",
dentry, dentry);
hlist_for_each_safe(p, n, (struct hlist_head *)&dentry->d_fsdata)
@@ -76,6 +75,7 @@ static int v9fs_lookup_revalidate(struct dentry *dentry, unsigned int flags)
if (v9inode->cache_validity & V9FS_INO_INVALID_ATTR) {
int retval;
struct v9fs_session_info *v9ses;
+
fid = v9fs_fid_lookup(dentry);
if (IS_ERR(fid))
return PTR_ERR(fid);
diff --git a/fs/9p/vfs_dir.c b/fs/9p/vfs_dir.c
index b6a5a0be444d..8c854d8cb0cd 100644
--- a/fs/9p/vfs_dir.c
+++ b/fs/9p/vfs_dir.c
@@ -1,7 +1,5 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
- * linux/fs/9p/vfs_dir.c
- *
* This file contains vfs directory ops for the 9P2000 protocol.
*
* Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
@@ -71,6 +69,7 @@ static inline int dt_type(struct p9_wstat *mistat)
static struct p9_rdir *v9fs_alloc_rdir_buf(struct file *filp, int buflen)
{
struct p9_fid *fid = filp->private_data;
+
if (!fid->rdir)
fid->rdir = kzalloc(sizeof(struct p9_rdir) + buflen, GFP_KERNEL);
return fid->rdir;
@@ -108,6 +107,7 @@ static int v9fs_dir_readdir(struct file *file, struct dir_context *ctx)
if (rdir->tail == rdir->head) {
struct iov_iter to;
int n;
+
iov_iter_kvec(&to, READ, &kvec, 1, buflen);
n = p9_client_read(file->private_data, ctx->pos, &to,
&err);
@@ -233,5 +233,5 @@ const struct file_operations v9fs_dir_operations_dotl = {
.iterate_shared = v9fs_dir_readdir_dotl,
.open = v9fs_file_open,
.release = v9fs_dir_release,
- .fsync = v9fs_file_fsync_dotl,
+ .fsync = v9fs_file_fsync_dotl,
};
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index 246235ebdb70..612e297f3763 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -1,7 +1,5 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
- * linux/fs/9p/vfs_file.c
- *
* This file contians vfs file ops for 9P2000.
*
* Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
@@ -408,6 +406,7 @@ v9fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
struct inode *inode = file_inode(file);
loff_t i_size;
unsigned long pg_start, pg_end;
+
pg_start = origin >> PAGE_SHIFT;
pg_end = (origin + retval - 1) >> PAGE_SHIFT;
if (inode->i_mapping && inode->i_mapping->nrpages)
@@ -529,29 +528,38 @@ static vm_fault_t
v9fs_vm_page_mkwrite(struct vm_fault *vmf)
{
struct v9fs_inode *v9inode;
- struct page *page = vmf->page;
+ struct folio *folio = page_folio(vmf->page);
struct file *filp = vmf->vma->vm_file;
struct inode *inode = file_inode(filp);
- p9_debug(P9_DEBUG_VFS, "page %p fid %lx\n",
- page, (unsigned long)filp->private_data);
+ p9_debug(P9_DEBUG_VFS, "folio %p fid %lx\n",
+ folio, (unsigned long)filp->private_data);
+
+ v9inode = V9FS_I(inode);
+
+ /* Wait for the page to be written to the cache before we allow it to
+ * be modified. We then assume the entire page will need writing back.
+ */
+#ifdef CONFIG_9P_FSCACHE
+ if (folio_test_fscache(folio) &&
+ folio_wait_fscache_killable(folio) < 0)
+ return VM_FAULT_NOPAGE;
+#endif
/* Update file times before taking page lock */
file_update_time(filp);
- v9inode = V9FS_I(inode);
- /* make sure the cache has finished storing the page */
- v9fs_fscache_wait_on_page_write(inode, page);
BUG_ON(!v9inode->writeback_fid);
- lock_page(page);
- if (page->mapping != inode->i_mapping)
+ if (folio_lock_killable(folio) < 0)
+ return VM_FAULT_RETRY;
+ if (folio_mapping(folio) != inode->i_mapping)
goto out_unlock;
- wait_for_stable_page(page);
+ folio_wait_stable(folio);
return VM_FAULT_LOCKED;
out_unlock:
- unlock_page(page);
+ folio_unlock(folio);
return VM_FAULT_NOPAGE;
}
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 08f48b70a741..328c338ff304 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -1,7 +1,5 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
- * linux/fs/9p/vfs_inode.c
- *
* This file contains vfs inode ops for the 9P2000 protocol.
*
* Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
@@ -49,6 +47,7 @@ static const struct inode_operations v9fs_symlink_inode_operations;
static u32 unixmode2p9mode(struct v9fs_session_info *v9ses, umode_t mode)
{
int res;
+
res = mode & 0777;
if (S_ISDIR(mode))
res |= P9_DMDIR;
@@ -110,7 +109,7 @@ static int p9mode2perm(struct v9fs_session_info *v9ses,
static umode_t p9mode2unixmode(struct v9fs_session_info *v9ses,
struct p9_wstat *stat, dev_t *rdev)
{
- int res;
+ int res, r;
u32 mode = stat->mode;
*rdev = 0;
@@ -128,11 +127,16 @@ static umode_t p9mode2unixmode(struct v9fs_session_info *v9ses,
res |= S_IFIFO;
else if ((mode & P9_DMDEVICE) && (v9fs_proto_dotu(v9ses))
&& (v9ses->nodev == 0)) {
- char type = 0, ext[32];
+ char type = 0;
int major = -1, minor = -1;
- strlcpy(ext, stat->extension, sizeof(ext));
- sscanf(ext, "%c %i %i", &type, &major, &minor);
+ r = sscanf(stat->extension, "%c %i %i", &type, &major, &minor);
+ if (r != 3) {
+ p9_debug(P9_DEBUG_ERROR,
+ "invalid device string, umode will be bogus: %s\n",
+ stat->extension);
+ return res;
+ }
switch (type) {
case 'c':
res |= S_IFCHR;
@@ -223,6 +227,7 @@ v9fs_blank_wstat(struct p9_wstat *wstat)
struct inode *v9fs_alloc_inode(struct super_block *sb)
{
struct v9fs_inode *v9inode;
+
v9inode = kmem_cache_alloc(v9fs_inode_cache, GFP_KERNEL);
if (!v9inode)
return NULL;
@@ -251,7 +256,7 @@ int v9fs_init_inode(struct v9fs_session_info *v9ses,
{
int err = 0;
- inode_init_owner(&init_user_ns,inode, NULL, mode);
+ inode_init_owner(&init_user_ns, inode, NULL, mode);
inode->i_blocks = 0;
inode->i_rdev = rdev;
inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode);
@@ -440,7 +445,7 @@ static struct inode *v9fs_qid_iget(struct super_block *sb,
unsigned long i_ino;
struct inode *inode;
struct v9fs_session_info *v9ses = sb->s_fs_info;
- int (*test)(struct inode *, void *);
+ int (*test)(struct inode *inode, void *data);
if (new)
test = v9fs_test_new_inode;
@@ -499,8 +504,10 @@ v9fs_inode_from_fid(struct v9fs_session_info *v9ses, struct p9_fid *fid,
static int v9fs_at_to_dotl_flags(int flags)
{
int rflags = 0;
+
if (flags & AT_REMOVEDIR)
rflags |= P9_DOTL_AT_REMOVEDIR;
+
return rflags;
}
@@ -797,7 +804,7 @@ struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
static int
v9fs_vfs_atomic_open(struct inode *dir, struct dentry *dentry,
- struct file *file, unsigned flags, umode_t mode)
+ struct file *file, unsigned int flags, umode_t mode)
{
int err;
u32 perm;
@@ -1084,7 +1091,7 @@ static int v9fs_vfs_setattr(struct user_namespace *mnt_userns,
fid = v9fs_fid_lookup(dentry);
use_dentry = 1;
}
- if(IS_ERR(fid))
+ if (IS_ERR(fid))
return PTR_ERR(fid);
v9fs_blank_wstat(&wstat);
@@ -1364,7 +1371,7 @@ v9fs_vfs_mknod(struct user_namespace *mnt_userns, struct inode *dir,
char name[2 + U32_MAX_DIGITS + 1 + U32_MAX_DIGITS + 1];
u32 perm;
- p9_debug(P9_DEBUG_VFS, " %lu,%pd mode: %hx MAJOR: %u MINOR: %u\n",
+ p9_debug(P9_DEBUG_VFS, " %lu,%pd mode: %x MAJOR: %u MINOR: %u\n",
dir->i_ino, dentry, mode,
MAJOR(rdev), MINOR(rdev));
diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c
index 01b9e1281a29..7dee89ba32e7 100644
--- a/fs/9p/vfs_inode_dotl.c
+++ b/fs/9p/vfs_inode_dotl.c
@@ -1,7 +1,5 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
- * linux/fs/9p/vfs_inode_dotl.c
- *
* This file contains vfs inode ops for the 9P2000.L protocol.
*
* Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
@@ -107,7 +105,7 @@ static struct inode *v9fs_qid_iget_dotl(struct super_block *sb,
unsigned long i_ino;
struct inode *inode;
struct v9fs_session_info *v9ses = sb->s_fs_info;
- int (*test)(struct inode *, void *);
+ int (*test)(struct inode *inode, void *data);
if (new)
test = v9fs_test_new_inode_dotl;
@@ -230,7 +228,7 @@ v9fs_vfs_create_dotl(struct user_namespace *mnt_userns, struct inode *dir,
static int
v9fs_vfs_atomic_open_dotl(struct inode *dir, struct dentry *dentry,
- struct file *file, unsigned flags, umode_t omode)
+ struct file *file, unsigned int flags, umode_t omode)
{
int err = 0;
kgid_t gid;
@@ -261,7 +259,7 @@ v9fs_vfs_atomic_open_dotl(struct inode *dir, struct dentry *dentry,
v9ses = v9fs_inode2v9ses(dir);
name = dentry->d_name.name;
- p9_debug(P9_DEBUG_VFS, "name:%s flags:0x%x mode:0x%hx\n",
+ p9_debug(P9_DEBUG_VFS, "name:%s flags:0x%x mode:0x%x\n",
name, flags, omode);
dfid = v9fs_parent_fid(dentry);
@@ -807,6 +805,7 @@ v9fs_vfs_link_dotl(struct dentry *old_dentry, struct inode *dir,
if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
/* Get the latest stat info from server. */
struct p9_fid *fid;
+
fid = v9fs_fid_lookup(old_dentry);
if (IS_ERR(fid))
return PTR_ERR(fid);
@@ -843,7 +842,7 @@ v9fs_vfs_mknod_dotl(struct user_namespace *mnt_userns, struct inode *dir,
struct p9_qid qid;
struct posix_acl *dacl = NULL, *pacl = NULL;
- p9_debug(P9_DEBUG_VFS, " %lu,%pd mode: %hx MAJOR: %u MINOR: %u\n",
+ p9_debug(P9_DEBUG_VFS, " %lu,%pd mode: %x MAJOR: %u MINOR: %u\n",
dir->i_ino, dentry, omode,
MAJOR(rdev), MINOR(rdev));
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index 5fce6e30bc5a..b739e02f5ef7 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -1,9 +1,5 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
- * linux/fs/9p/vfs_super.c
- *
- * This file contians superblock ops for 9P2000. It is intended that
- * you mount this file system on directories.
*
* Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
* Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
@@ -83,6 +79,9 @@ v9fs_fill_super(struct super_block *sb, struct v9fs_session_info *v9ses,
if (!v9ses->cache) {
sb->s_bdi->ra_pages = 0;
sb->s_bdi->io_pages = 0;
+ } else {
+ sb->s_bdi->ra_pages = v9ses->maxdata >> PAGE_SHIFT;
+ sb->s_bdi->io_pages = v9ses->maxdata >> PAGE_SHIFT;
}
sb->s_flags |= SB_ACTIVE | SB_DIRSYNC;
@@ -113,7 +112,7 @@ static struct dentry *v9fs_mount(struct file_system_type *fs_type, int flags,
struct inode *inode = NULL;
struct dentry *root = NULL;
struct v9fs_session_info *v9ses = NULL;
- umode_t mode = S_IRWXUGO | S_ISVTX;
+ umode_t mode = 0777 | S_ISVTX;
struct p9_fid *fid;
int retval = 0;
@@ -157,6 +156,7 @@ static struct dentry *v9fs_mount(struct file_system_type *fs_type, int flags,
sb->s_root = root;
if (v9fs_proto_dotl(v9ses)) {
struct p9_stat_dotl *st = NULL;
+
st = p9_client_getattr_dotl(fid, P9_STATS_BASIC);
if (IS_ERR(st)) {
retval = PTR_ERR(st);
@@ -167,6 +167,7 @@ static struct dentry *v9fs_mount(struct file_system_type *fs_type, int flags,
kfree(st);
} else {
struct p9_wstat *st = NULL;
+
st = p9_client_stat(fid);
if (IS_ERR(st)) {
retval = PTR_ERR(st);
@@ -275,12 +276,13 @@ done:
static int v9fs_drop_inode(struct inode *inode)
{
struct v9fs_session_info *v9ses;
+
v9ses = v9fs_inode2v9ses(inode);
if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE)
return generic_drop_inode(inode);
/*
* in case of non cached mode always drop the
- * the inode because we want the inode attribute
+ * inode because we want the inode attribute
* to always match that on the server.
*/
return 1;
diff --git a/fs/9p/xattr.c b/fs/9p/xattr.c
index ee331845e2c7..a824441b95a2 100644
--- a/fs/9p/xattr.c
+++ b/fs/9p/xattr.c
@@ -1,15 +1,7 @@
+// SPDX-License-Identifier: LGPL-2.1
/*
* Copyright IBM Corporation, 2010
* Author Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2.1 of the GNU Lesser General Public License
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
*/
#include <linux/module.h>
diff --git a/fs/9p/xattr.h b/fs/9p/xattr.h
index c63c3bea5de5..3e11fc3331eb 100644
--- a/fs/9p/xattr.h
+++ b/fs/9p/xattr.h
@@ -1,15 +1,7 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
/*
* Copyright IBM Corporation, 2010
* Author Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2.1 of the GNU Lesser General Public License
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
*/
#ifndef FS_9P_XATTR_H
#define FS_9P_XATTR_H
@@ -22,13 +14,14 @@ extern const struct xattr_handler *v9fs_xattr_handlers[];
extern const struct xattr_handler v9fs_xattr_acl_access_handler;
extern const struct xattr_handler v9fs_xattr_acl_default_handler;
-extern ssize_t v9fs_fid_xattr_get(struct p9_fid *, const char *,
- void *, size_t);
-extern ssize_t v9fs_xattr_get(struct dentry *, const char *,
- void *, size_t);
-extern int v9fs_fid_xattr_set(struct p9_fid *, const char *,
- const void *, size_t, int);
-extern int v9fs_xattr_set(struct dentry *, const char *,
- const void *, size_t, int);
-extern ssize_t v9fs_listxattr(struct dentry *, char *, size_t);
+ssize_t v9fs_fid_xattr_get(struct p9_fid *fid, const char *name,
+ void *buffer, size_t buffer_size);
+ssize_t v9fs_xattr_get(struct dentry *dentry, const char *name,
+ void *buffer, size_t buffer_size);
+int v9fs_fid_xattr_set(struct p9_fid *fid, const char *name,
+ const void *value, size_t value_len, int flags);
+int v9fs_xattr_set(struct dentry *dentry, const char *name,
+ const void *value, size_t value_len, int flags);
+ssize_t v9fs_listxattr(struct dentry *dentry, char *buffer,
+ size_t buffer_size);
#endif /* FS_9P_XATTR_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-12 06:22:47 +0000