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-rw-r--r--fs/afs/mntpt.c8
-rw-r--r--fs/autofs/symlink.c5
-rw-r--r--fs/autofs4/symlink.c4
-rw-r--r--fs/befs/linuxvfs.c10
-rw-r--r--fs/cifs/cifsfs.h4
-rw-r--r--fs/cifs/file.c2
-rw-r--r--fs/cifs/link.c6
-rw-r--r--fs/devfs/base.c4
-rw-r--r--fs/ext2/symlink.c4
-rw-r--r--fs/ext3/symlink.c4
-rw-r--r--fs/freevxfs/vxfs_immed.c6
-rw-r--r--fs/hppfs/hppfs_kern.c30
-rw-r--r--fs/inotify.c2
-rw-r--r--fs/ioprio.c2
-rw-r--r--fs/jffs2/symlink.c16
-rw-r--r--fs/jfs/symlink.c4
-rw-r--r--fs/namei.c40
-rw-r--r--fs/nfs/dir.c28
-rw-r--r--fs/nfs/file.c5
-rw-r--r--fs/nfs/inode.c162
-rw-r--r--fs/nfs/nfs3acl.c4
-rw-r--r--fs/nfs/read.c8
-rw-r--r--fs/nfs/symlink.c37
-rw-r--r--fs/proc/base.c8
-rw-r--r--fs/proc/generic.c4
-rw-r--r--fs/reiserfs/inode.c2
-rw-r--r--fs/smbfs/symlink.c6
-rw-r--r--fs/sysfs/inode.c4
-rw-r--r--fs/sysfs/symlink.c6
-rw-r--r--fs/sysv/symlink.c4
-rw-r--r--fs/ufs/symlink.c4
-rw-r--r--fs/xfs/linux-2.6/xfs_iops.c10
32 files changed, 246 insertions, 197 deletions
diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c
index bfc28abe1cb1..31ee06590de5 100644
--- a/fs/afs/mntpt.c
+++ b/fs/afs/mntpt.c
@@ -30,7 +30,7 @@ static struct dentry *afs_mntpt_lookup(struct inode *dir,
struct dentry *dentry,
struct nameidata *nd);
static int afs_mntpt_open(struct inode *inode, struct file *file);
-static int afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd);
+static void *afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd);
struct file_operations afs_mntpt_file_operations = {
.open = afs_mntpt_open,
@@ -233,7 +233,7 @@ static struct vfsmount *afs_mntpt_do_automount(struct dentry *mntpt)
/*
* follow a link from a mountpoint directory, thus causing it to be mounted
*/
-static int afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd)
{
struct vfsmount *newmnt;
struct dentry *old_dentry;
@@ -249,7 +249,7 @@ static int afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd)
newmnt = afs_mntpt_do_automount(dentry);
if (IS_ERR(newmnt)) {
path_release(nd);
- return PTR_ERR(newmnt);
+ return (void *)newmnt;
}
old_dentry = nd->dentry;
@@ -267,7 +267,7 @@ static int afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd)
}
kleave(" = %d", err);
- return err;
+ return ERR_PTR(err);
} /* end afs_mntpt_follow_link() */
/*****************************************************************************/
diff --git a/fs/autofs/symlink.c b/fs/autofs/symlink.c
index f028396f1383..52e8772b066e 100644
--- a/fs/autofs/symlink.c
+++ b/fs/autofs/symlink.c
@@ -12,11 +12,12 @@
#include "autofs_i.h"
-static int autofs_follow_link(struct dentry *dentry, struct nameidata *nd)
+/* Nothing to release.. */
+static void *autofs_follow_link(struct dentry *dentry, struct nameidata *nd)
{
char *s=((struct autofs_symlink *)dentry->d_inode->u.generic_ip)->data;
nd_set_link(nd, s);
- return 0;
+ return NULL;
}
struct inode_operations autofs_symlink_inode_operations = {
diff --git a/fs/autofs4/symlink.c b/fs/autofs4/symlink.c
index c265a66edf0f..2ea2c98fd84b 100644
--- a/fs/autofs4/symlink.c
+++ b/fs/autofs4/symlink.c
@@ -12,11 +12,11 @@
#include "autofs_i.h"
-static int autofs4_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *autofs4_follow_link(struct dentry *dentry, struct nameidata *nd)
{
struct autofs_info *ino = autofs4_dentry_ino(dentry);
nd_set_link(nd, (char *)ino->u.symlink);
- return 0;
+ return NULL;
}
struct inode_operations autofs4_symlink_inode_operations = {
diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c
index de5bb280a828..e0a6025f1d06 100644
--- a/fs/befs/linuxvfs.c
+++ b/fs/befs/linuxvfs.c
@@ -41,8 +41,8 @@ static struct inode *befs_alloc_inode(struct super_block *sb);
static void befs_destroy_inode(struct inode *inode);
static int befs_init_inodecache(void);
static void befs_destroy_inodecache(void);
-static int befs_follow_link(struct dentry *, struct nameidata *);
-static void befs_put_link(struct dentry *, struct nameidata *);
+static void *befs_follow_link(struct dentry *, struct nameidata *);
+static void befs_put_link(struct dentry *, struct nameidata *, void *);
static int befs_utf2nls(struct super_block *sb, const char *in, int in_len,
char **out, int *out_len);
static int befs_nls2utf(struct super_block *sb, const char *in, int in_len,
@@ -461,7 +461,7 @@ befs_destroy_inodecache(void)
* The data stream become link name. Unless the LONG_SYMLINK
* flag is set.
*/
-static int
+static void *
befs_follow_link(struct dentry *dentry, struct nameidata *nd)
{
befs_inode_info *befs_ino = BEFS_I(dentry->d_inode);
@@ -487,10 +487,10 @@ befs_follow_link(struct dentry *dentry, struct nameidata *nd)
}
nd_set_link(nd, link);
- return 0;
+ return NULL;
}
-static void befs_put_link(struct dentry *dentry, struct nameidata *nd)
+static void befs_put_link(struct dentry *dentry, struct nameidata *nd, void *p)
{
befs_inode_info *befs_ino = BEFS_I(dentry->d_inode);
if (befs_ino->i_flags & BEFS_LONG_SYMLINK) {
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index 78af5850c558..1fd21f66f243 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -83,8 +83,8 @@ extern int cifs_dir_notify(struct file *, unsigned long arg);
extern struct dentry_operations cifs_dentry_ops;
/* Functions related to symlinks */
-extern int cifs_follow_link(struct dentry *direntry, struct nameidata *nd);
-extern void cifs_put_link(struct dentry *direntry, struct nameidata *nd);
+extern void *cifs_follow_link(struct dentry *direntry, struct nameidata *nd);
+extern void cifs_put_link(struct dentry *direntry, struct nameidata *nd, void *);
extern int cifs_readlink(struct dentry *direntry, char __user *buffer,
int buflen);
extern int cifs_symlink(struct inode *inode, struct dentry *direntry,
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 30ab70ce5547..3497125189df 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -643,7 +643,7 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock)
netfid, length,
pfLock->fl_start, numUnlock, numLock, lockType,
wait_flag);
- if (rc == 0 && (pfLock->fl_flags & FL_POSIX))
+ if (pfLock->fl_flags & FL_POSIX)
posix_lock_file_wait(file, pfLock);
FreeXid(xid);
return rc;
diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index bde0fabfece0..ab925ef4f863 100644
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -92,7 +92,7 @@ cifs_hl_exit:
return rc;
}
-int
+void *
cifs_follow_link(struct dentry *direntry, struct nameidata *nd)
{
struct inode *inode = direntry->d_inode;
@@ -148,7 +148,7 @@ out:
out_no_free:
FreeXid(xid);
nd_set_link(nd, target_path);
- return 0;
+ return NULL; /* No cookie */
}
int
@@ -330,7 +330,7 @@ cifs_readlink(struct dentry *direntry, char __user *pBuffer, int buflen)
return rc;
}
-void cifs_put_link(struct dentry *direntry, struct nameidata *nd)
+void cifs_put_link(struct dentry *direntry, struct nameidata *nd, void *cookie)
{
char *p = nd_get_link(nd);
if (!IS_ERR(p))
diff --git a/fs/devfs/base.c b/fs/devfs/base.c
index 1ecfe1f184d4..8b679b67e5e0 100644
--- a/fs/devfs/base.c
+++ b/fs/devfs/base.c
@@ -2491,11 +2491,11 @@ static int devfs_mknod(struct inode *dir, struct dentry *dentry, int mode,
return 0;
} /* End Function devfs_mknod */
-static int devfs_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *devfs_follow_link(struct dentry *dentry, struct nameidata *nd)
{
struct devfs_entry *p = get_devfs_entry_from_vfs_inode(dentry->d_inode);
nd_set_link(nd, p ? p->u.symlink.linkname : ERR_PTR(-ENODEV));
- return 0;
+ return NULL;
} /* End Function devfs_follow_link */
static struct inode_operations devfs_iops = {
diff --git a/fs/ext2/symlink.c b/fs/ext2/symlink.c
index 9f7bac01d557..1e67d87cfa91 100644
--- a/fs/ext2/symlink.c
+++ b/fs/ext2/symlink.c
@@ -21,11 +21,11 @@
#include "xattr.h"
#include <linux/namei.h>
-static int ext2_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *ext2_follow_link(struct dentry *dentry, struct nameidata *nd)
{
struct ext2_inode_info *ei = EXT2_I(dentry->d_inode);
nd_set_link(nd, (char *)ei->i_data);
- return 0;
+ return NULL;
}
struct inode_operations ext2_symlink_inode_operations = {
diff --git a/fs/ext3/symlink.c b/fs/ext3/symlink.c
index 8c3e72818fb0..4f79122cde67 100644
--- a/fs/ext3/symlink.c
+++ b/fs/ext3/symlink.c
@@ -23,11 +23,11 @@
#include <linux/namei.h>
#include "xattr.h"
-static int ext3_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void * ext3_follow_link(struct dentry *dentry, struct nameidata *nd)
{
struct ext3_inode_info *ei = EXT3_I(dentry->d_inode);
nd_set_link(nd, (char*)ei->i_data);
- return 0;
+ return NULL;
}
struct inode_operations ext3_symlink_inode_operations = {
diff --git a/fs/freevxfs/vxfs_immed.c b/fs/freevxfs/vxfs_immed.c
index ac677ab262b2..d0401dc68d41 100644
--- a/fs/freevxfs/vxfs_immed.c
+++ b/fs/freevxfs/vxfs_immed.c
@@ -38,7 +38,7 @@
#include "vxfs_inode.h"
-static int vxfs_immed_follow_link(struct dentry *, struct nameidata *);
+static void * vxfs_immed_follow_link(struct dentry *, struct nameidata *);
static int vxfs_immed_readpage(struct file *, struct page *);
@@ -72,12 +72,12 @@ struct address_space_operations vxfs_immed_aops = {
* Returns:
* Zero on success, else a negative error code.
*/
-static int
+static void *
vxfs_immed_follow_link(struct dentry *dp, struct nameidata *np)
{
struct vxfs_inode_info *vip = VXFS_INO(dp->d_inode);
nd_set_link(np, vip->vii_immed.vi_immed);
- return 0;
+ return NULL;
}
/**
diff --git a/fs/hppfs/hppfs_kern.c b/fs/hppfs/hppfs_kern.c
index ff150fedb981..52930915bad8 100644
--- a/fs/hppfs/hppfs_kern.c
+++ b/fs/hppfs/hppfs_kern.c
@@ -38,7 +38,7 @@ struct hppfs_inode_info {
static inline struct hppfs_inode_info *HPPFS_I(struct inode *inode)
{
- return(list_entry(inode, struct hppfs_inode_info, vfs_inode));
+ return container_of(inode, struct hppfs_inode_info, vfs_inode);
}
#define HPPFS_SUPER_MAGIC 0xb00000ee
@@ -662,42 +662,36 @@ static int hppfs_readlink(struct dentry *dentry, char *buffer, int buflen)
{
struct file *proc_file;
struct dentry *proc_dentry;
- int (*readlink)(struct dentry *, char *, int);
- int err, n;
+ int ret;
proc_dentry = HPPFS_I(dentry->d_inode)->proc_dentry;
proc_file = dentry_open(dget(proc_dentry), NULL, O_RDONLY);
- err = PTR_ERR(proc_dentry);
- if(IS_ERR(proc_dentry))
- return(err);
+ if (IS_ERR(proc_file))
+ return PTR_ERR(proc_file);
- readlink = proc_dentry->d_inode->i_op->readlink;
- n = (*readlink)(proc_dentry, buffer, buflen);
+ ret = proc_dentry->d_inode->i_op->readlink(proc_dentry, buffer, buflen);
fput(proc_file);
- return(n);
+ return ret;
}
-static int hppfs_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void* hppfs_follow_link(struct dentry *dentry, struct nameidata *nd)
{
struct file *proc_file;
struct dentry *proc_dentry;
- int (*follow_link)(struct dentry *, struct nameidata *);
- int err, n;
+ void *ret;
proc_dentry = HPPFS_I(dentry->d_inode)->proc_dentry;
proc_file = dentry_open(dget(proc_dentry), NULL, O_RDONLY);
- err = PTR_ERR(proc_dentry);
- if(IS_ERR(proc_dentry))
- return(err);
+ if (IS_ERR(proc_file))
+ return proc_file;
- follow_link = proc_dentry->d_inode->i_op->follow_link;
- n = (*follow_link)(proc_dentry, nd);
+ ret = proc_dentry->d_inode->i_op->follow_link(proc_dentry, nd);
fput(proc_file);
- return(n);
+ return ret;
}
static struct inode_operations hppfs_dir_iops = {
diff --git a/fs/inotify.c b/fs/inotify.c
index 868901b1e779..2e4e2a57708c 100644
--- a/fs/inotify.c
+++ b/fs/inotify.c
@@ -353,7 +353,7 @@ static int inotify_dev_get_wd(struct inotify_device *dev,
do {
if (unlikely(!idr_pre_get(&dev->idr, GFP_KERNEL)))
return -ENOSPC;
- ret = idr_get_new_above(&dev->idr, watch, dev->last_wd, &watch->wd);
+ ret = idr_get_new_above(&dev->idr, watch, dev->last_wd+1, &watch->wd);
} while (ret == -EAGAIN);
return ret;
diff --git a/fs/ioprio.c b/fs/ioprio.c
index 97e1f088ba00..d1c1f2b2c9da 100644
--- a/fs/ioprio.c
+++ b/fs/ioprio.c
@@ -62,6 +62,8 @@ asmlinkage long sys_ioprio_set(int which, int who, int ioprio)
break;
case IOPRIO_CLASS_IDLE:
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
break;
default:
return -EINVAL;
diff --git a/fs/jffs2/symlink.c b/fs/jffs2/symlink.c
index 65ab6b001dca..82ef484f5e12 100644
--- a/fs/jffs2/symlink.c
+++ b/fs/jffs2/symlink.c
@@ -18,7 +18,7 @@
#include <linux/namei.h>
#include "nodelist.h"
-static int jffs2_follow_link(struct dentry *dentry, struct nameidata *nd);
+static void *jffs2_follow_link(struct dentry *dentry, struct nameidata *nd);
struct inode_operations jffs2_symlink_inode_operations =
{
@@ -27,9 +27,10 @@ struct inode_operations jffs2_symlink_inode_operations =
.setattr = jffs2_setattr
};
-static int jffs2_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *jffs2_follow_link(struct dentry *dentry, struct nameidata *nd)
{
struct jffs2_inode_info *f = JFFS2_INODE_INFO(dentry->d_inode);
+ char *p = (char *)f->dents;
/*
* We don't acquire the f->sem mutex here since the only data we
@@ -45,19 +46,20 @@ static int jffs2_follow_link(struct dentry *dentry, struct nameidata *nd)
* nd_set_link() call.
*/
- if (!f->dents) {
+ if (!p) {
printk(KERN_ERR "jffs2_follow_link(): can't find symlink taerget\n");
- return -EIO;
+ p = ERR_PTR(-EIO);
+ } else {
+ D1(printk(KERN_DEBUG "jffs2_follow_link(): target path is '%s'\n", (char *) f->dents));
}
- D1(printk(KERN_DEBUG "jffs2_follow_link(): target path is '%s'\n", (char *) f->dents));
- nd_set_link(nd, (char *)f->dents);
+ nd_set_link(nd, p);
/*
* We unlock the f->sem mutex but VFS will use the f->dents string. This is safe
* since the only way that may cause f->dents to be changed is iput() operation.
* But VFS will not use f->dents after iput() has been called.
*/
- return 0;
+ return NULL;
}
diff --git a/fs/jfs/symlink.c b/fs/jfs/symlink.c
index 287d8d6c3cfd..16477b3835e1 100644
--- a/fs/jfs/symlink.c
+++ b/fs/jfs/symlink.c
@@ -22,11 +22,11 @@
#include "jfs_inode.h"
#include "jfs_xattr.h"
-static int jfs_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *jfs_follow_link(struct dentry *dentry, struct nameidata *nd)
{
char *s = JFS_IP(dentry->d_inode)->i_inline;
nd_set_link(nd, s);
- return 0;
+ return NULL;
}
struct inode_operations jfs_symlink_inode_operations = {
diff --git a/fs/namei.c b/fs/namei.c
index b85f158aef0c..6ec1f0fefc5b 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -501,6 +501,7 @@ struct path {
static inline int __do_follow_link(struct path *path, struct nameidata *nd)
{
int error;
+ void *cookie;
struct dentry *dentry = path->dentry;
touch_atime(path->mnt, dentry);
@@ -508,13 +509,15 @@ static inline int __do_follow_link(struct path *path, struct nameidata *nd)
if (path->mnt == nd->mnt)
mntget(path->mnt);
- error = dentry->d_inode->i_op->follow_link(dentry, nd);
- if (!error) {
+ cookie = dentry->d_inode->i_op->follow_link(dentry, nd);
+ error = PTR_ERR(cookie);
+ if (!IS_ERR(cookie)) {
char *s = nd_get_link(nd);
+ error = 0;
if (s)
error = __vfs_follow_link(nd, s);
if (dentry->d_inode->i_op->put_link)
- dentry->d_inode->i_op->put_link(dentry, nd);
+ dentry->d_inode->i_op->put_link(dentry, nd, cookie);
}
dput(dentry);
mntput(path->mnt);
@@ -2344,15 +2347,17 @@ out:
int generic_readlink(struct dentry *dentry, char __user *buffer, int buflen)
{
struct nameidata nd;
- int res;
+ void *cookie;
+
nd.depth = 0;
- res = dentry->d_inode->i_op->follow_link(dentry, &nd);
- if (!res) {
- res = vfs_readlink(dentry, buffer, buflen, nd_get_link(&nd));
+ cookie = dentry->d_inode->i_op->follow_link(dentry, &nd);
+ if (!IS_ERR(cookie)) {
+ int res = vfs_readlink(dentry, buffer, buflen, nd_get_link(&nd));
if (dentry->d_inode->i_op->put_link)
- dentry->d_inode->i_op->put_link(dentry, &nd);
+ dentry->d_inode->i_op->put_link(dentry, &nd, cookie);
+ cookie = ERR_PTR(res);
}
- return res;
+ return PTR_ERR(cookie);
}
int vfs_follow_link(struct nameidata *nd, const char *link)
@@ -2395,23 +2400,20 @@ int page_readlink(struct dentry *dentry, char __user *buffer, int buflen)
return res;
}
-int page_follow_link_light(struct dentry *dentry, struct nameidata *nd)
+void *page_follow_link_light(struct dentry *dentry, struct nameidata *nd)
{
- struct page *page;
+ struct page *page = NULL;
nd_set_link(nd, page_getlink(dentry, &page));
- return 0;
+ return page;
}
-void page_put_link(struct dentry *dentry, struct nameidata *nd)
+void page_put_link(struct dentry *dentry, struct nameidata *nd, void *cookie)
{
- if (!IS_ERR(nd_get_link(nd))) {
- struct page *page;
- page = find_get_page(dentry->d_inode->i_mapping, 0);
- if (!page)
- BUG();
+ struct page *page = cookie;
+
+ if (page) {
kunmap(page);
page_cache_release(page);
- page_cache_release(page);
}
}
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index b38a57e78a63..2df639f143e8 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -182,14 +182,16 @@ int nfs_readdir_filler(nfs_readdir_descriptor_t *desc, struct page *page)
/* We requested READDIRPLUS, but the server doesn't grok it */
if (error == -ENOTSUPP && desc->plus) {
NFS_SERVER(inode)->caps &= ~NFS_CAP_READDIRPLUS;
- NFS_FLAGS(inode) &= ~NFS_INO_ADVISE_RDPLUS;
+ clear_bit(NFS_INO_ADVISE_RDPLUS, &NFS_FLAGS(inode));
desc->plus = 0;
goto again;
}
goto error;
}
SetPageUptodate(page);
- NFS_FLAGS(inode) |= NFS_INO_INVALID_ATIME;
+ spin_lock(&inode->i_lock);
+ NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATIME;
+ spin_unlock(&inode->i_lock);
/* Ensure consistent page alignment of the data.
* Note: assumes we have exclusive access to this mapping either
* through inode->i_sem or some other mechanism.
@@ -462,7 +464,9 @@ int uncached_readdir(nfs_readdir_descriptor_t *desc, void *dirent,
page,
NFS_SERVER(inode)->dtsize,
desc->plus);
- NFS_FLAGS(inode) |= NFS_INO_INVALID_ATIME;
+ spin_lock(&inode->i_lock);
+ NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATIME;
+ spin_unlock(&inode->i_lock);
desc->page = page;
desc->ptr = kmap(page); /* matching kunmap in nfs_do_filldir */
if (desc->error >= 0) {
@@ -545,7 +549,7 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
break;
}
if (res == -ETOOSMALL && desc->plus) {
- NFS_FLAGS(inode) &= ~NFS_INO_ADVISE_RDPLUS;
+ clear_bit(NFS_INO_ADVISE_RDPLUS, &NFS_FLAGS(inode));
nfs_zap_caches(inode);
desc->plus = 0;
desc->entry->eof = 0;
@@ -608,7 +612,7 @@ static inline int nfs_check_verifier(struct inode *dir, struct dentry *dentry)
{
if (IS_ROOT(dentry))
return 1;
- if ((NFS_FLAGS(dir) & NFS_INO_INVALID_ATTR) != 0
+ if ((NFS_I(dir)->cache_validity & NFS_INO_INVALID_ATTR) != 0
|| nfs_attribute_timeout(dir))
return 0;
return nfs_verify_change_attribute(dir, (unsigned long)dentry->d_fsdata);
@@ -935,6 +939,7 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry
error = nfs_revalidate_inode(NFS_SERVER(dir), dir);
if (error < 0) {
res = ERR_PTR(error);
+ unlock_kernel();
goto out;
}
@@ -1575,11 +1580,12 @@ out:
int nfs_access_get_cached(struct inode *inode, struct rpc_cred *cred, struct nfs_access_entry *res)
{
- struct nfs_access_entry *cache = &NFS_I(inode)->cache_access;
+ struct nfs_inode *nfsi = NFS_I(inode);
+ struct nfs_access_entry *cache = &nfsi->cache_access;
if (cache->cred != cred
|| time_after(jiffies, cache->jiffies + NFS_ATTRTIMEO(inode))
- || (NFS_FLAGS(inode) & NFS_INO_INVALID_ACCESS))
+ || (nfsi->cache_validity & NFS_INO_INVALID_ACCESS))
return -ENOENT;
memcpy(res, cache, sizeof(*res));
return 0;
@@ -1587,14 +1593,18 @@ int nfs_access_get_cached(struct inode *inode, struct rpc_cred *cred, struct nfs
void nfs_access_add_cache(struct inode *inode, struct nfs_access_entry *set)
{
- struct nfs_access_entry *cache = &NFS_I(inode)->cache_access;
+ struct nfs_inode *nfsi = NFS_I(inode);
+ struct nfs_access_entry *cache = &nfsi->cache_access;
if (cache->cred != set->cred) {
if (cache->cred)
put_rpccred(cache->cred);
cache->cred = get_rpccred(set->cred);
}
- NFS_FLAGS(inode) &= ~NFS_INO_INVALID_ACCESS;
+ /* FIXME: replace current access_cache BKL reliance with inode->i_lock */
+ spin_lock(&inode->i_lock);
+ nfsi->cache_validity &= ~NFS_INO_INVALID_ACCESS;
+ spin_unlock(&inode->i_lock);
cache->jiffies = set->jiffies;
cache->mask = set->mask;
}
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 5621ba9885f4..f6b9eda925c5 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -134,9 +134,10 @@ nfs_file_release(struct inode *inode, struct file *filp)
*/
static int nfs_revalidate_file(struct inode *inode, struct file *filp)
{
+ struct nfs_inode *nfsi = NFS_I(inode);
int retval = 0;
- if ((NFS_FLAGS(inode) & NFS_INO_REVAL_PAGECACHE) || nfs_attribute_timeout(inode))
+ if ((nfsi->cache_validity & NFS_INO_REVAL_PAGECACHE) || nfs_attribute_timeout(inode))
retval = __nfs_revalidate_inode(NFS_SERVER(inode), inode);
nfs_revalidate_mapping(inode, filp->f_mapping);
return 0;
@@ -164,7 +165,7 @@ static int nfs_revalidate_file_size(struct inode *inode, struct file *filp)
goto force_reval;
if (nfsi->npages != 0)
return 0;
- if (!(NFS_FLAGS(inode) & NFS_INO_REVAL_PAGECACHE) && !nfs_attribute_timeout(inode))
+ if (!(nfsi->cache_validity & NFS_INO_REVAL_PAGECACHE) && !nfs_attribute_timeout(inode))
return 0;
force_reval:
return __nfs_revalidate_inode(server, inode);
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index bb7ca022bcb2..541b418327c8 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -615,14 +615,18 @@ nfs_zap_caches(struct inode *inode)
struct nfs_inode *nfsi = NFS_I(inode);
int mode = inode->i_mode;
+ spin_lock(&inode->i_lock);
+
NFS_ATTRTIMEO(inode) = NFS_MINATTRTIMEO(inode);
NFS_ATTRTIMEO_UPDATE(inode) = jiffies;
memset(NFS_COOKIEVERF(inode), 0, sizeof(NFS_COOKIEVERF(inode)));
if (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode))
- nfsi->flags |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL|NFS_INO_REVAL_PAGECACHE;
+ nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL|NFS_INO_REVAL_PAGECACHE;
else
- nfsi->flags |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL|NFS_INO_REVAL_PAGECACHE;
+ nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL|NFS_INO_REVAL_PAGECACHE;
+
+ spin_unlock(&inode->i_lock);
}
static void nfs_zap_acl_cache(struct inode *inode)
@@ -632,7 +636,9 @@ static void nfs_zap_acl_cache(struct inode *inode)
clear_acl_cache = NFS_PROTO(inode)->clear_acl_cache;
if (clear_acl_cache != NULL)
clear_acl_cache(inode);
- NFS_I(inode)->flags &= ~NFS_INO_INVALID_ACL;
+ spin_lock(&inode->i_lock);
+ NFS_I(inode)->cache_validity &= ~NFS_INO_INVALID_ACL;
+ spin_unlock(&inode->i_lock);
}
/*
@@ -739,7 +745,7 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
inode->i_fop = &nfs_dir_operations;
if (nfs_server_capable(inode, NFS_CAP_READDIRPLUS)
&& fattr->size <= NFS_LIMIT_READDIRPLUS)
- NFS_FLAGS(inode) |= NFS_INO_ADVISE_RDPLUS;
+ set_bit(NFS_INO_ADVISE_RDPLUS, &NFS_FLAGS(inode));
} else if (S_ISLNK(inode->i_mode))
inode->i_op = &nfs_symlink_inode_operations;
else
@@ -841,7 +847,9 @@ void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr)
inode->i_uid = attr->ia_uid;
if ((attr->ia_valid & ATTR_GID) != 0)
inode->i_gid = attr->ia_gid;
- NFS_FLAGS(inode) |= NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
+ spin_lock(&inode->i_lock);
+ NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
+ spin_unlock(&inode->i_lock);
}
if ((attr->ia_valid & ATTR_SIZE) != 0) {
inode->i_size = attr->ia_size;
@@ -849,31 +857,47 @@ void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr)
}
}
+static int nfs_wait_schedule(void *word)
+{
+ if (signal_pending(current))
+ return -ERESTARTSYS;
+ schedule();
+ return 0;
+}
+
/*
* Wait for the inode to get unlocked.
- * (Used for NFS_INO_LOCKED and NFS_INO_REVALIDATING).
*/
-static int
-nfs_wait_on_inode(struct inode *inode, int flag)
+static int nfs_wait_on_inode(struct inode *inode)
{
struct rpc_clnt *clnt = NFS_CLIENT(inode);
struct nfs_inode *nfsi = NFS_I(inode);
-
+ sigset_t oldmask;
int error;
- if (!(NFS_FLAGS(inode) & flag))
- return 0;
+
atomic_inc(&inode->i_count);
- error = nfs_wait_event(clnt, nfsi->nfs_i_wait,
- !(NFS_FLAGS(inode) & flag));
+ rpc_clnt_sigmask(clnt, &oldmask);
+ error = wait_on_bit_lock(&nfsi->flags, NFS_INO_REVALIDATING,
+ nfs_wait_schedule, TASK_INTERRUPTIBLE);
+ rpc_clnt_sigunmask(clnt, &oldmask);
iput(inode);
+
return error;
}
+static void nfs_wake_up_inode(struct inode *inode)
+{
+ struct nfs_inode *nfsi = NFS_I(inode);
+
+ clear_bit(NFS_INO_REVALIDATING, &nfsi->flags);
+ smp_mb__after_clear_bit();
+ wake_up_bit(&nfsi->flags, NFS_INO_REVALIDATING);
+}
+
int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
{
struct inode *inode = dentry->d_inode;
- struct nfs_inode *nfsi = NFS_I(inode);
- int need_atime = nfsi->flags & NFS_INO_INVALID_ATIME;
+ int need_atime = NFS_I(inode)->cache_validity & NFS_INO_INVALID_ATIME;
int err;
if (__IS_FLG(inode, MS_NOATIME))
@@ -1019,7 +1043,7 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
struct nfs_fattr fattr;
struct nfs_inode *nfsi = NFS_I(inode);
unsigned long verifier;
- unsigned int flags;
+ unsigned long cache_validity;
dfprintk(PAGECACHE, "NFS: revalidating (%s/%Ld)\n",
inode->i_sb->s_id, (long long)NFS_FILEID(inode));
@@ -1030,18 +1054,19 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
if (NFS_STALE(inode))
goto out_nowait;
- while (NFS_REVALIDATING(inode)) {
- status = nfs_wait_on_inode(inode, NFS_INO_REVALIDATING);
- if (status < 0)
- goto out_nowait;
- if (NFS_ATTRTIMEO(inode) == 0)
- continue;
- if (NFS_FLAGS(inode) & (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ATIME))
- continue;
- status = NFS_STALE(inode) ? -ESTALE : 0;
- goto out_nowait;
+ status = nfs_wait_on_inode(inode);
+ if (status < 0)
+ goto out;
+ if (NFS_STALE(inode)) {
+ status = -ESTALE;
+ /* Do we trust the cached ESTALE? */
+ if (NFS_ATTRTIMEO(inode) != 0) {
+ if (nfsi->cache_validity & (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ATIME)) {
+ /* no */
+ } else
+ goto out;
+ }
}
- NFS_FLAGS(inode) |= NFS_INO_REVALIDATING;
/* Protect against RPC races by saving the change attribute */
verifier = nfs_save_change_attribute(inode);
@@ -1053,7 +1078,7 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
if (status == -ESTALE) {
nfs_zap_caches(inode);
if (!S_ISDIR(inode->i_mode))
- NFS_FLAGS(inode) |= NFS_INO_STALE;
+ set_bit(NFS_INO_STALE, &NFS_FLAGS(inode));
}
goto out;
}
@@ -1065,25 +1090,30 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
(long long)NFS_FILEID(inode), status);
goto out;
}
- flags = nfsi->flags;
- nfsi->flags &= ~NFS_INO_REVAL_PAGECACHE;
+ spin_lock(&inode->i_lock);
+ cache_validity = nfsi->cache_validity;
+ nfsi->cache_validity &= ~NFS_INO_REVAL_PAGECACHE;
+
/*
* We may need to keep the attributes marked as invalid if
* we raced with nfs_end_attr_update().
*/
if (verifier == nfsi->cache_change_attribute)
- nfsi->flags &= ~(NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ATIME);
- /* Do the page cache invalidation */
+ nfsi->cache_validity &= ~(NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ATIME);
+ spin_unlock(&inode->i_lock);
+
nfs_revalidate_mapping(inode, inode->i_mapping);
- if (flags & NFS_INO_INVALID_ACL)
+
+ if (cache_validity & NFS_INO_INVALID_ACL)
nfs_zap_acl_cache(inode);
+
dfprintk(PAGECACHE, "NFS: (%s/%Ld) revalidation complete\n",
inode->i_sb->s_id,
(long long)NFS_FILEID(inode));
-out:
- NFS_FLAGS(inode) &= ~NFS_INO_REVALIDATING;
- wake_up(&nfsi->nfs_i_wait);
+ out:
+ nfs_wake_up_inode(inode);
+
out_nowait:
unlock_kernel();
return status;
@@ -1107,7 +1137,7 @@ int nfs_attribute_timeout(struct inode *inode)
*/
int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
{
- if (!(NFS_FLAGS(inode) & (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA))
+ if (!(NFS_I(inode)->cache_validity & (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA))
&& !nfs_attribute_timeout(inode))
return NFS_STALE(inode) ? -ESTALE : 0;
return __nfs_revalidate_inode(server, inode);
@@ -1122,19 +1152,23 @@ void nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping)
{
struct nfs_inode *nfsi = NFS_I(inode);
- if (nfsi->flags & NFS_INO_INVALID_DATA) {
+ if (nfsi->cache_validity & NFS_INO_INVALID_DATA) {
if (S_ISREG(inode->i_mode)) {
if (filemap_fdatawrite(mapping) == 0)
filemap_fdatawait(mapping);
nfs_wb_all(inode);
}
invalidate_inode_pages2(mapping);
- nfsi->flags &= ~NFS_INO_INVALID_DATA;
+
+ spin_lock(&inode->i_lock);
+ nfsi->cache_validity &= ~NFS_INO_INVALID_DATA;
if (S_ISDIR(inode->i_mode)) {
memset(nfsi->cookieverf, 0, sizeof(nfsi->cookieverf));
/* This ensures we revalidate child dentries */
nfsi->cache_change_attribute++;
}
+ spin_unlock(&inode->i_lock);
+
dfprintk(PAGECACHE, "NFS: (%s/%Ld) data cache invalidated\n",
inode->i_sb->s_id,
(long long)NFS_FILEID(inode));
@@ -1164,10 +1198,12 @@ void nfs_end_data_update(struct inode *inode)
if (!nfs_have_delegation(inode, FMODE_READ)) {
/* Mark the attribute cache for revalidation */
- nfsi->flags |= NFS_INO_INVALID_ATTR;
+ spin_lock(&inode->i_lock);
+ nfsi->cache_validity |= NFS_INO_INVALID_ATTR;
/* Directories and symlinks: invalidate page cache too */
if (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode))
- nfsi->flags |= NFS_INO_INVALID_DATA;
+ nfsi->cache_validity |= NFS_INO_INVALID_DATA;
+ spin_unlock(&inode->i_lock);
}
nfsi->cache_change_attribute ++;
atomic_dec(&nfsi->data_updates);
@@ -1192,6 +1228,8 @@ int nfs_refresh_inode(struct inode *inode, struct nfs_fattr *fattr)
if (nfs_have_delegation(inode, FMODE_READ))
return 0;
+ spin_lock(&inode->i_lock);
+
/* Are we in the process of updating data on the server? */
data_unstable = nfs_caches_unstable(inode);
@@ -1200,19 +1238,23 @@ int nfs_refresh_inode(struct inode *inode, struct nfs_fattr *fattr)
&& nfsi->change_attr == fattr->pre_change_attr)
nfsi->change_attr = fattr->change_attr;
if (nfsi->change_attr != fattr->change_attr) {
- nfsi->flags |= NFS_INO_INVALID_ATTR;
+ nfsi->cache_validity |= NFS_INO_INVALID_ATTR;
if (!data_unstable)
- nfsi->flags |= NFS_INO_REVAL_PAGECACHE;
+ nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE;
}
}
- if ((fattr->valid & NFS_ATTR_FATTR) == 0)
+ if ((fattr->valid & NFS_ATTR_FATTR) == 0) {
+ spin_unlock(&inode->i_lock);
return 0;
+ }
/* Has the inode gone and changed behind our back? */
if (nfsi->fileid != fattr->fileid
- || (inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT))
+ || (inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT)) {
+ spin_unlock(&inode->i_lock);
return -EIO;
+ }
cur_size = i_size_read(inode);
new_isize = nfs_size_to_loff_t(fattr->size);
@@ -1227,30 +1269,31 @@ int nfs_refresh_inode(struct inode *inode, struct nfs_fattr *fattr)
/* Verify a few of the more important attributes */
if (!timespec_equal(&inode->i_mtime, &fattr->mtime)) {
- nfsi->flags |= NFS_INO_INVALID_ATTR;
+ nfsi->cache_validity |= NFS_INO_INVALID_ATTR;
if (!data_unstable)
- nfsi->flags |= NFS_INO_REVAL_PAGECACHE;
+ nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE;
}
if (cur_size != new_isize) {
- nfsi->flags |= NFS_INO_INVALID_ATTR;
+ nfsi->cache_validity |= NFS_INO_INVALID_ATTR;
if (nfsi->npages == 0)
- nfsi->flags |= NFS_INO_REVAL_PAGECACHE;
+ nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE;
}
/* Have any file permissions changed? */
if ((inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO)
|| inode->i_uid != fattr->uid
|| inode->i_gid != fattr->gid)
- nfsi->flags |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
+ nfsi->cache_validity |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
/* Has the link count changed? */
if (inode->i_nlink != fattr->nlink)
- nfsi->flags |= NFS_INO_INVALID_ATTR;
+ nfsi->cache_validity |= NFS_INO_INVALID_ATTR;
if (!timespec_equal(&inode->i_atime, &fattr->atime))
- nfsi->flags |= NFS_INO_INVALID_ATIME;
+ nfsi->cache_validity |= NFS_INO_INVALID_ATIME;
nfsi->read_cache_jiffies = fattr->timestamp;
+ spin_unlock(&inode->i_lock);
return 0;
}
@@ -1289,11 +1332,15 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr, unsign
goto out_err;
}
+ spin_lock(&inode->i_lock);
+
/*
* Make sure the inode's type hasn't changed.
*/
- if ((inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT))
+ if ((inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT)) {
+ spin_unlock(&inode->i_lock);
goto out_changed;
+ }
/*
* Update the read time so we don't revalidate too often.
@@ -1384,8 +1431,9 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr, unsign
|| S_ISLNK(inode->i_mode)))
invalid &= ~NFS_INO_INVALID_DATA;
if (!nfs_have_delegation(inode, FMODE_READ))
- nfsi->flags |= invalid;
+ nfsi->cache_validity |= invalid;
+ spin_unlock(&inode->i_lock);
return 0;
out_changed:
/*
@@ -1402,7 +1450,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr, unsign
*/
nfs_invalidate_inode(inode);
out_err:
- NFS_FLAGS(inode) |= NFS_INO_STALE;
+ set_bit(NFS_INO_STALE, &NFS_FLAGS(inode));
return -ESTALE;
}
@@ -1961,7 +2009,8 @@ static struct inode *nfs_alloc_inode(struct super_block *sb)
nfsi = (struct nfs_inode *)kmem_cache_alloc(nfs_inode_cachep, SLAB_KERNEL);
if (!nfsi)
return NULL;
- nfsi->flags = 0;
+ nfsi->flags = 0UL;
+ nfsi->cache_validity = 0UL;
#ifdef CONFIG_NFS_V3_ACL
nfsi->acl_access = ERR_PTR(-EAGAIN);
nfsi->acl_default = ERR_PTR(-EAGAIN);
@@ -1993,7 +2042,6 @@ static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
nfsi->ndirty = 0;
nfsi->ncommit = 0;
nfsi->npages = 0;
- init_waitqueue_head(&nfsi->nfs_i_wait);
nfs4_init_once(nfsi);
}
}
diff --git a/fs/nfs/nfs3acl.c b/fs/nfs/nfs3acl.c
index 1b7a3ef2f813..6a5bbc0ae941 100644
--- a/fs/nfs/nfs3acl.c
+++ b/fs/nfs/nfs3acl.c
@@ -308,7 +308,9 @@ static int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
nfs_begin_data_update(inode);
status = rpc_call(server->client_acl, ACLPROC3_SETACL,
&args, &fattr, 0);
- NFS_FLAGS(inode) |= NFS_INO_INVALID_ACCESS;
+ spin_lock(&inode->i_lock);
+ NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ACCESS;
+ spin_unlock(&inode->i_lock);
nfs_end_data_update(inode);
dprintk("NFS reply setacl: %d\n", status);
diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index 6f866b8aa2d5..6ceb1d471f20 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -140,7 +140,9 @@ static int nfs_readpage_sync(struct nfs_open_context *ctx, struct inode *inode,
if (rdata->res.eof != 0 || result == 0)
break;
} while (count);
- NFS_FLAGS(inode) |= NFS_INO_INVALID_ATIME;
+ spin_lock(&inode->i_lock);
+ NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATIME;
+ spin_unlock(&inode->i_lock);
if (count)
memclear_highpage_flush(page, rdata->args.pgbase, count);
@@ -473,7 +475,9 @@ void nfs_readpage_result(struct rpc_task *task)
}
task->tk_status = -EIO;
}
- NFS_FLAGS(data->inode) |= NFS_INO_INVALID_ATIME;
+ spin_lock(&data->inode->i_lock);
+ NFS_I(data->inode)->cache_validity |= NFS_INO_INVALID_ATIME;
+ spin_unlock(&data->inode->i_lock);
data->complete(data, status);
}
diff --git a/fs/nfs/symlink.c b/fs/nfs/symlink.c
index 35f106599144..18dc95b0b646 100644
--- a/fs/nfs/symlink.c
+++ b/fs/nfs/symlink.c
@@ -27,26 +27,14 @@
/* Symlink caching in the page cache is even more simplistic
* and straight-forward than readdir caching.
- *
- * At the beginning of the page we store pointer to struct page in question,
- * simplifying nfs_put_link() (if inode got invalidated we can't find the page
- * to be freed via pagecache lookup).
- * The NUL-terminated string follows immediately thereafter.
*/
-struct nfs_symlink {
- struct page *page;
- char body[0];
-};
-
static int nfs_symlink_filler(struct inode *inode, struct page *page)
{
- const unsigned int pgbase = offsetof(struct nfs_symlink, body);
- const unsigned int pglen = PAGE_SIZE - pgbase;
int error;
lock_kernel();
- error = NFS_PROTO(inode)->readlink(inode, page, pgbase, pglen);
+ error = NFS_PROTO(inode)->readlink(inode, page, 0, PAGE_SIZE);
unlock_kernel();
if (error < 0)
goto error;
@@ -60,11 +48,10 @@ error:
return -EIO;
}
-static int nfs_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *nfs_follow_link(struct dentry *dentry, struct nameidata *nd)
{
struct inode *inode = dentry->d_inode;
struct page *page;
- struct nfs_symlink *p;
void *err = ERR_PTR(nfs_revalidate_inode(NFS_SERVER(inode), inode));
if (err)
goto read_failed;
@@ -78,28 +65,20 @@ static int nfs_follow_link(struct dentry *dentry, struct nameidata *nd)
err = ERR_PTR(-EIO);
goto getlink_read_error;
}
- p = kmap(page);
- p->page = page;
- nd_set_link(nd, p->body);
- return 0;
+ nd_set_link(nd, kmap(page));
+ return page;
getlink_read_error:
page_cache_release(page);
read_failed:
nd_set_link(nd, err);
- return 0;
+ return NULL;
}
-static void nfs_put_link(struct dentry *dentry, struct nameidata *nd)
+static void nfs_put_link(struct dentry *dentry, struct nameidata *nd, void *cookie)
{
- char *s = nd_get_link(nd);
- if (!IS_ERR(s)) {
- struct nfs_symlink *p;
- struct page *page;
-
- p = container_of(s, struct nfs_symlink, body[0]);
- page = p->page;
-
+ if (cookie) {
+ struct page *page = cookie;
kunmap(page);
page_cache_release(page);
}
diff --git a/fs/proc/base.c b/fs/proc/base.c
index ace151fa4878..491f2d9f89ac 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -890,7 +890,7 @@ static struct file_operations proc_seccomp_operations = {
};
#endif /* CONFIG_SECCOMP */
-static int proc_pid_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *proc_pid_follow_link(struct dentry *dentry, struct nameidata *nd)
{
struct inode *inode = dentry->d_inode;
int error = -EACCES;
@@ -907,7 +907,7 @@ static int proc_pid_follow_link(struct dentry *dentry, struct nameidata *nd)
error = PROC_I(inode)->op.proc_get_link(inode, &nd->dentry, &nd->mnt);
nd->last_type = LAST_BIND;
out:
- return error;
+ return ERR_PTR(error);
}
static int do_proc_readlink(struct dentry *dentry, struct vfsmount *mnt,
@@ -1692,11 +1692,11 @@ static int proc_self_readlink(struct dentry *dentry, char __user *buffer,
return vfs_readlink(dentry,buffer,buflen,tmp);
}
-static int proc_self_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *proc_self_follow_link(struct dentry *dentry, struct nameidata *nd)
{
char tmp[30];
sprintf(tmp, "%d", current->tgid);
- return vfs_follow_link(nd,tmp);
+ return ERR_PTR(vfs_follow_link(nd,tmp));
}
static struct inode_operations proc_self_inode_operations = {
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 6c6315d04028..abe8920313fb 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -329,10 +329,10 @@ static void release_inode_number(unsigned int inum)
spin_unlock(&proc_inum_lock);
}
-static int proc_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *proc_follow_link(struct dentry *dentry, struct nameidata *nd)
{
nd_set_link(nd, PDE(dentry->d_inode)->data);
- return 0;
+ return NULL;
}
static struct inode_operations proc_link_inode_operations = {
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index d9f614a57731..ff291c973a56 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -1985,7 +1985,7 @@ int reiserfs_new_inode(struct reiserfs_transaction_handle *th,
* iput doesn't deadlock in reiserfs_delete_xattrs. The locking
* code really needs to be reworked, but this will take care of it
* for now. -jeffm */
- if (REISERFS_I(dir)->i_acl_default) {
+ if (REISERFS_I(dir)->i_acl_default && !IS_ERR(REISERFS_I(dir)->i_acl_default)) {
reiserfs_write_unlock_xattrs(dir->i_sb);
iput(inode);
reiserfs_write_lock_xattrs(dir->i_sb);
diff --git a/fs/smbfs/symlink.c b/fs/smbfs/symlink.c
index 8b069e06433d..0c64bc3a0127 100644
--- a/fs/smbfs/symlink.c
+++ b/fs/smbfs/symlink.c
@@ -34,7 +34,7 @@ int smb_symlink(struct inode *inode, struct dentry *dentry, const char *oldname)
return smb_proc_symlink(server_from_dentry(dentry), dentry, oldname);
}
-static int smb_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *smb_follow_link(struct dentry *dentry, struct nameidata *nd)
{
char *link = __getname();
DEBUG1("followlink of %s/%s\n", DENTRY_PATH(dentry));
@@ -52,10 +52,10 @@ static int smb_follow_link(struct dentry *dentry, struct nameidata *nd)
}
}
nd_set_link(nd, link);
- return 0;
+ return NULL;
}
-static void smb_put_link(struct dentry *dentry, struct nameidata *nd)
+static void smb_put_link(struct dentry *dentry, struct nameidata *nd, void *p)
{
char *s = nd_get_link(nd);
if (!IS_ERR(s))
diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index d727dc960634..970a33f03299 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -228,6 +228,10 @@ void sysfs_hash_and_remove(struct dentry * dir, const char * name)
struct sysfs_dirent * sd;
struct sysfs_dirent * parent_sd = dir->d_fsdata;
+ if (dir->d_inode == NULL)
+ /* no inode means this hasn't been made visible yet */
+ return;
+
down(&dir->d_inode->i_sem);
list_for_each_entry(sd, &parent_sd->s_children, s_sibling) {
if (!sd->s_element)
diff --git a/fs/sysfs/symlink.c b/fs/sysfs/symlink.c
index fae57c83a722..de402fa915f2 100644
--- a/fs/sysfs/symlink.c
+++ b/fs/sysfs/symlink.c
@@ -151,17 +151,17 @@ static int sysfs_getlink(struct dentry *dentry, char * path)
}
-static int sysfs_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *sysfs_follow_link(struct dentry *dentry, struct nameidata *nd)
{
int error = -ENOMEM;
unsigned long page = get_zeroed_page(GFP_KERNEL);
if (page)
error = sysfs_getlink(dentry, (char *) page);
nd_set_link(nd, error ? ERR_PTR(error) : (char *)page);
- return 0;
+ return NULL;
}
-static void sysfs_put_link(struct dentry *dentry, struct nameidata *nd)
+static void sysfs_put_link(struct dentry *dentry, struct nameidata *nd, void *cookie)
{
char *page = nd_get_link(nd);
if (!IS_ERR(page))
diff --git a/fs/sysv/symlink.c b/fs/sysv/symlink.c
index ed637db2dcb1..b85ce61d635c 100644
--- a/fs/sysv/symlink.c
+++ b/fs/sysv/symlink.c
@@ -8,10 +8,10 @@
#include "sysv.h"
#include <linux/namei.h>
-static int sysv_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *sysv_follow_link(struct dentry *dentry, struct nameidata *nd)
{
nd_set_link(nd, (char *)SYSV_I(dentry->d_inode)->i_data);
- return 0;
+ return NULL;
}
struct inode_operations sysv_fast_symlink_inode_operations = {
diff --git a/fs/ufs/symlink.c b/fs/ufs/symlink.c
index a0e49149098f..337512ed5781 100644
--- a/fs/ufs/symlink.c
+++ b/fs/ufs/symlink.c
@@ -29,11 +29,11 @@
#include <linux/namei.h>
#include <linux/ufs_fs.h>
-static int ufs_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *ufs_follow_link(struct dentry *dentry, struct nameidata *nd)
{
struct ufs_inode_info *p = UFS_I(dentry->d_inode);
nd_set_link(nd, (char*)p->i_u1.i_symlink);
- return 0;
+ return NULL;
}
struct inode_operations ufs_fast_symlink_inode_operations = {
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c
index 407e99359391..f252605514eb 100644
--- a/fs/xfs/linux-2.6/xfs_iops.c
+++ b/fs/xfs/linux-2.6/xfs_iops.c
@@ -374,7 +374,7 @@ linvfs_rename(
* we need to be very careful about how much stack we use.
* uio is kmalloced for this reason...
*/
-STATIC int
+STATIC void *
linvfs_follow_link(
struct dentry *dentry,
struct nameidata *nd)
@@ -391,14 +391,14 @@ linvfs_follow_link(
link = (char *)kmalloc(MAXNAMELEN+1, GFP_KERNEL);
if (!link) {
nd_set_link(nd, ERR_PTR(-ENOMEM));
- return 0;
+ return NULL;
}
uio = (uio_t *)kmalloc(sizeof(uio_t), GFP_KERNEL);
if (!uio) {
kfree(link);
nd_set_link(nd, ERR_PTR(-ENOMEM));
- return 0;
+ return NULL;
}
vp = LINVFS_GET_VP(dentry->d_inode);
@@ -422,10 +422,10 @@ linvfs_follow_link(
kfree(uio);
nd_set_link(nd, link);
- return 0;
+ return NULL;
}
-static void linvfs_put_link(struct dentry *dentry, struct nameidata *nd)
+static void linvfs_put_link(struct dentry *dentry, struct nameidata *nd, void *p)
{
char *s = nd_get_link(nd);
if (!IS_ERR(s))
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-29 17:12:38 +0000