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-rw-r--r--fs/coda/dir.c149
-rw-r--r--fs/coda/file.c19
-rw-r--r--fs/coda/inode.c46
-rw-r--r--fs/coda/pioctl.c22
-rw-r--r--fs/coda/psdev.c13
-rw-r--r--fs/coda/symlink.c3
-rw-r--r--fs/coda/upcall.c32
-rw-r--r--include/linux/coda_psdev.h2
8 files changed, 96 insertions, 190 deletions
diff --git a/fs/coda/dir.c b/fs/coda/dir.c
index 69fbbea..96fbeab 100644
--- a/fs/coda/dir.c
+++ b/fs/coda/dir.c
@@ -17,7 +17,6 @@
#include <linux/stat.h>
#include <linux/errno.h>
#include <linux/string.h>
-#include <linux/smp_lock.h>
#include <linux/spinlock.h>
#include <asm/uaccess.h>
@@ -117,15 +116,11 @@ static struct dentry *coda_lookup(struct inode *dir, struct dentry *entry, struc
goto exit;
}
- lock_kernel();
-
error = venus_lookup(dir->i_sb, coda_i2f(dir), name, length,
&type, &resfid);
if (!error)
error = coda_cnode_make(&inode, &resfid, dir->i_sb);
- unlock_kernel();
-
if (error && error != -ENOENT)
return ERR_PTR(error);
@@ -141,28 +136,24 @@ exit:
int coda_permission(struct inode *inode, int mask)
{
- int error = 0;
+ int error;
mask &= MAY_READ | MAY_WRITE | MAY_EXEC;
if (!mask)
- return 0;
+ return 0;
if ((mask & MAY_EXEC) && !execute_ok(inode))
return -EACCES;
- lock_kernel();
-
if (coda_cache_check(inode, mask))
- goto out;
+ return 0;
- error = venus_access(inode->i_sb, coda_i2f(inode), mask);
+ error = venus_access(inode->i_sb, coda_i2f(inode), mask);
if (!error)
coda_cache_enter(inode, mask);
- out:
- unlock_kernel();
return error;
}
@@ -201,41 +192,34 @@ static inline void coda_dir_drop_nlink(struct inode *dir)
/* creation routines: create, mknod, mkdir, link, symlink */
static int coda_create(struct inode *dir, struct dentry *de, int mode, struct nameidata *nd)
{
- int error=0;
+ int error;
const char *name=de->d_name.name;
int length=de->d_name.len;
struct inode *inode;
struct CodaFid newfid;
struct coda_vattr attrs;
- lock_kernel();
-
- if (coda_isroot(dir) && coda_iscontrol(name, length)) {
- unlock_kernel();
+ if (coda_isroot(dir) && coda_iscontrol(name, length))
return -EPERM;
- }
error = venus_create(dir->i_sb, coda_i2f(dir), name, length,
0, mode, &newfid, &attrs);
-
- if ( error ) {
- unlock_kernel();
- d_drop(de);
- return error;
- }
+ if (error)
+ goto err_out;
inode = coda_iget(dir->i_sb, &newfid, &attrs);
- if ( IS_ERR(inode) ) {
- unlock_kernel();
- d_drop(de);
- return PTR_ERR(inode);
+ if (IS_ERR(inode)) {
+ error = PTR_ERR(inode);
+ goto err_out;
}
/* invalidate the directory cnode's attributes */
coda_dir_update_mtime(dir);
- unlock_kernel();
d_instantiate(de, inode);
return 0;
+err_out:
+ d_drop(de);
+ return error;
}
static int coda_mkdir(struct inode *dir, struct dentry *de, int mode)
@@ -247,36 +231,29 @@ static int coda_mkdir(struct inode *dir, struct dentry *de, int mode)
int error;
struct CodaFid newfid;
- lock_kernel();
-
- if (coda_isroot(dir) && coda_iscontrol(name, len)) {
- unlock_kernel();
+ if (coda_isroot(dir) && coda_iscontrol(name, len))
return -EPERM;
- }
attrs.va_mode = mode;
error = venus_mkdir(dir->i_sb, coda_i2f(dir),
name, len, &newfid, &attrs);
-
- if ( error ) {
- unlock_kernel();
- d_drop(de);
- return error;
- }
+ if (error)
+ goto err_out;
inode = coda_iget(dir->i_sb, &newfid, &attrs);
- if ( IS_ERR(inode) ) {
- unlock_kernel();
- d_drop(de);
- return PTR_ERR(inode);
+ if (IS_ERR(inode)) {
+ error = PTR_ERR(inode);
+ goto err_out;
}
/* invalidate the directory cnode's attributes */
coda_dir_inc_nlink(dir);
coda_dir_update_mtime(dir);
- unlock_kernel();
d_instantiate(de, inode);
return 0;
+err_out:
+ d_drop(de);
+ return error;
}
/* try to make de an entry in dir_inodde linked to source_de */
@@ -288,52 +265,38 @@ static int coda_link(struct dentry *source_de, struct inode *dir_inode,
int len = de->d_name.len;
int error;
- lock_kernel();
-
- if (coda_isroot(dir_inode) && coda_iscontrol(name, len)) {
- unlock_kernel();
+ if (coda_isroot(dir_inode) && coda_iscontrol(name, len))
return -EPERM;
- }
error = venus_link(dir_inode->i_sb, coda_i2f(inode),
coda_i2f(dir_inode), (const char *)name, len);
-
if (error) {
d_drop(de);
- goto out;
+ return error;
}
coda_dir_update_mtime(dir_inode);
atomic_inc(&inode->i_count);
d_instantiate(de, inode);
inc_nlink(inode);
-
-out:
- unlock_kernel();
- return(error);
+ return 0;
}
static int coda_symlink(struct inode *dir_inode, struct dentry *de,
const char *symname)
{
- const char *name = de->d_name.name;
+ const char *name = de->d_name.name;
int len = de->d_name.len;
int symlen;
- int error = 0;
-
- lock_kernel();
+ int error;
- if (coda_isroot(dir_inode) && coda_iscontrol(name, len)) {
- unlock_kernel();
+ if (coda_isroot(dir_inode) && coda_iscontrol(name, len))
return -EPERM;
- }
symlen = strlen(symname);
- if ( symlen > CODA_MAXPATHLEN ) {
- unlock_kernel();
+ if (symlen > CODA_MAXPATHLEN)
return -ENAMETOOLONG;
- }
/*
* This entry is now negative. Since we do not create
@@ -344,10 +307,9 @@ static int coda_symlink(struct inode *dir_inode, struct dentry *de,
symname, symlen);
/* mtime is no good anymore */
- if ( !error )
+ if (!error)
coda_dir_update_mtime(dir_inode);
- unlock_kernel();
return error;
}
@@ -358,17 +320,12 @@ static int coda_unlink(struct inode *dir, struct dentry *de)
const char *name = de->d_name.name;
int len = de->d_name.len;
- lock_kernel();
-
error = venus_remove(dir->i_sb, coda_i2f(dir), name, len);
- if ( error ) {
- unlock_kernel();
+ if (error)
return error;
- }
coda_dir_update_mtime(dir);
drop_nlink(de->d_inode);
- unlock_kernel();
return 0;
}
@@ -378,8 +335,6 @@ static int coda_rmdir(struct inode *dir, struct dentry *de)
int len = de->d_name.len;
int error;
- lock_kernel();
-
error = venus_rmdir(dir->i_sb, coda_i2f(dir), name, len);
if (!error) {
/* VFS may delete the child */
@@ -390,7 +345,6 @@ static int coda_rmdir(struct inode *dir, struct dentry *de)
coda_dir_drop_nlink(dir);
coda_dir_update_mtime(dir);
}
- unlock_kernel();
return error;
}
@@ -404,15 +358,12 @@ static int coda_rename(struct inode *old_dir, struct dentry *old_dentry,
int new_length = new_dentry->d_name.len;
int error;
- lock_kernel();
-
error = venus_rename(old_dir->i_sb, coda_i2f(old_dir),
coda_i2f(new_dir), old_length, new_length,
(const char *) old_name, (const char *)new_name);
-
- if ( !error ) {
- if ( new_dentry->d_inode ) {
- if ( S_ISDIR(new_dentry->d_inode->i_mode) ) {
+ if (!error) {
+ if (new_dentry->d_inode) {
+ if (S_ISDIR(new_dentry->d_inode->i_mode)) {
coda_dir_drop_nlink(old_dir);
coda_dir_inc_nlink(new_dir);
}
@@ -424,8 +375,6 @@ static int coda_rename(struct inode *old_dir, struct dentry *old_dentry,
coda_flag_inode(new_dir, C_VATTR);
}
}
- unlock_kernel();
-
return error;
}
@@ -595,10 +544,7 @@ static int coda_dentry_revalidate(struct dentry *de, struct nameidata *nd)
struct inode *inode = de->d_inode;
struct coda_inode_info *cii;
- if (!inode)
- return 1;
- lock_kernel();
- if (coda_isroot(inode))
+ if (!inode || coda_isroot(inode))
goto out;
if (is_bad_inode(inode))
goto bad;
@@ -621,12 +567,9 @@ static int coda_dentry_revalidate(struct dentry *de, struct nameidata *nd)
spin_lock(&cii->c_lock);
cii->c_flags &= ~(C_VATTR | C_PURGE | C_FLUSH);
spin_unlock(&cii->c_lock);
-
bad:
- unlock_kernel();
return 0;
out:
- unlock_kernel();
return 1;
}
@@ -659,20 +602,19 @@ static int coda_dentry_delete(struct dentry * dentry)
int coda_revalidate_inode(struct dentry *dentry)
{
struct coda_vattr attr;
- int error = 0;
+ int error;
int old_mode;
ino_t old_ino;
struct inode *inode = dentry->d_inode;
struct coda_inode_info *cii = ITOC(inode);
- lock_kernel();
- if ( !cii->c_flags )
- goto ok;
+ if (!cii->c_flags)
+ return 0;
if (cii->c_flags & (C_VATTR | C_PURGE | C_FLUSH)) {
error = venus_getattr(inode->i_sb, &(cii->c_fid), &attr);
- if ( error )
- goto return_bad;
+ if (error)
+ return -EIO;
/* this inode may be lost if:
- it's ino changed
@@ -691,7 +633,7 @@ int coda_revalidate_inode(struct dentry *dentry)
/* the following can happen when a local fid is replaced
with a global one, here we lose and declare the inode bad */
if (inode->i_ino != old_ino)
- goto return_bad;
+ return -EIO;
coda_flag_inode_children(inode, C_FLUSH);
@@ -699,12 +641,5 @@ int coda_revalidate_inode(struct dentry *dentry)
cii->c_flags &= ~(C_VATTR | C_PURGE | C_FLUSH);
spin_unlock(&cii->c_lock);
}
-
-ok:
- unlock_kernel();
return 0;
-
-return_bad:
- unlock_kernel();
- return -EIO;
}
diff --git a/fs/coda/file.c b/fs/coda/file.c
index c4e3957..c8b50ba 100644
--- a/fs/coda/file.c
+++ b/fs/coda/file.c
@@ -15,7 +15,6 @@
#include <linux/stat.h>
#include <linux/cred.h>
#include <linux/errno.h>
-#include <linux/smp_lock.h>
#include <linux/spinlock.h>
#include <linux/string.h>
#include <linux/slab.h>
@@ -144,8 +143,6 @@ int coda_open(struct inode *coda_inode, struct file *coda_file)
if (!cfi)
return -ENOMEM;
- lock_kernel();
-
error = venus_open(coda_inode->i_sb, coda_i2f(coda_inode), coda_flags,
&host_file);
if (!host_file)
@@ -153,7 +150,6 @@ int coda_open(struct inode *coda_inode, struct file *coda_file)
if (error) {
kfree(cfi);
- unlock_kernel();
return error;
}
@@ -165,8 +161,6 @@ int coda_open(struct inode *coda_inode, struct file *coda_file)
BUG_ON(coda_file->private_data != NULL);
coda_file->private_data = cfi;
-
- unlock_kernel();
return 0;
}
@@ -177,9 +171,7 @@ int coda_release(struct inode *coda_inode, struct file *coda_file)
struct coda_file_info *cfi;
struct coda_inode_info *cii;
struct inode *host_inode;
- int err = 0;
-
- lock_kernel();
+ int err;
cfi = CODA_FTOC(coda_file);
BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
@@ -203,8 +195,6 @@ int coda_release(struct inode *coda_inode, struct file *coda_file)
kfree(coda_file->private_data);
coda_file->private_data = NULL;
- unlock_kernel();
-
/* VFS fput ignores the return value from file_operations->release, so
* there is no use returning an error here */
return 0;
@@ -215,7 +205,7 @@ int coda_fsync(struct file *coda_file, int datasync)
struct file *host_file;
struct inode *coda_inode = coda_file->f_path.dentry->d_inode;
struct coda_file_info *cfi;
- int err = 0;
+ int err;
if (!(S_ISREG(coda_inode->i_mode) || S_ISDIR(coda_inode->i_mode) ||
S_ISLNK(coda_inode->i_mode)))
@@ -226,11 +216,8 @@ int coda_fsync(struct file *coda_file, int datasync)
host_file = cfi->cfi_container;
err = vfs_fsync(host_file, datasync);
- if ( !err && !datasync ) {
- lock_kernel();
+ if (!err && !datasync)
err = venus_fsync(coda_inode->i_sb, coda_i2f(coda_inode));
- unlock_kernel();
- }
return err;
}
diff --git a/fs/coda/inode.c b/fs/coda/inode.c
index 0553f3b..b7fa3e3 100644
--- a/fs/coda/inode.c
+++ b/fs/coda/inode.c
@@ -150,8 +150,6 @@ static int coda_fill_super(struct super_block *sb, void *data, int silent)
int error;
int idx;
- lock_kernel();
-
idx = get_device_index((struct coda_mount_data *) data);
/* Ignore errors in data, for backward compatibility */
@@ -161,23 +159,26 @@ static int coda_fill_super(struct super_block *sb, void *data, int silent)
printk(KERN_INFO "coda_read_super: device index: %i\n", idx);
vc = &coda_comms[idx];
+ lock_kernel();
+
if (!vc->vc_inuse) {
printk("coda_read_super: No pseudo device\n");
- unlock_kernel();
- return -EINVAL;
+ error = -EINVAL;
+ goto unlock_out;
}
- if ( vc->vc_sb ) {
+ if (vc->vc_sb) {
printk("coda_read_super: Device already mounted\n");
- unlock_kernel();
- return -EBUSY;
+ error = -EBUSY;
+ goto unlock_out;
}
error = bdi_setup_and_register(&vc->bdi, "coda", BDI_CAP_MAP_COPY);
if (error)
- goto bdi_err;
+ goto unlock_out;
vc->vc_sb = sb;
+ unlock_kernel();
sb->s_fs_info = vc;
sb->s_flags |= MS_NOATIME;
@@ -206,21 +207,23 @@ static int coda_fill_super(struct super_block *sb, void *data, int silent)
printk("coda_read_super: rootinode is %ld dev %s\n",
root->i_ino, root->i_sb->s_id);
sb->s_root = d_alloc_root(root);
- if (!sb->s_root)
+ if (!sb->s_root) {
+ error = -EINVAL;
goto error;
- unlock_kernel();
+ }
return 0;
- error:
- bdi_destroy(&vc->bdi);
- bdi_err:
+error:
if (root)
iput(root);
- if (vc)
- vc->vc_sb = NULL;
+ lock_kernel();
+ bdi_destroy(&vc->bdi);
+ vc->vc_sb = NULL;
+ sb->s_fs_info = NULL;
+unlock_out:
unlock_kernel();
- return -EINVAL;
+ return error;
}
static void coda_put_super(struct super_block *sb)
@@ -253,8 +256,6 @@ int coda_setattr(struct dentry *de, struct iattr *iattr)
struct coda_vattr vattr;
int error;
- lock_kernel();
-
memset(&vattr, 0, sizeof(vattr));
inode->i_ctime = CURRENT_TIME_SEC;
@@ -264,13 +265,10 @@ int coda_setattr(struct dentry *de, struct iattr *iattr)
/* Venus is responsible for truncating the container-file!!! */
error = venus_setattr(inode->i_sb, coda_i2f(inode), &vattr);
- if ( !error ) {
+ if (!error) {
coda_vattr_to_iattr(inode, &vattr);
coda_cache_clear_inode(inode);
}
-
- unlock_kernel();
-
return error;
}
@@ -284,12 +282,8 @@ static int coda_statfs(struct dentry *dentry, struct kstatfs *buf)
{
int error;
- lock_kernel();
-
error = venus_statfs(dentry, buf);
- unlock_kernel();
-
if (error) {
/* fake something like AFS does */
buf->f_blocks = 9000000;
diff --git a/fs/coda/pioctl.c b/fs/coda/pioctl.c
index 028a9a0..2fd89b5 100644
--- a/fs/coda/pioctl.c
+++ b/fs/coda/pioctl.c
@@ -23,8 +23,6 @@
#include <linux/coda_fs_i.h>
#include <linux/coda_psdev.h>
-#include <linux/smp_lock.h>
-
/* pioctl ops */
static int coda_ioctl_permission(struct inode *inode, int mask);
static long coda_pioctl(struct file *filp, unsigned int cmd,
@@ -58,13 +56,9 @@ static long coda_pioctl(struct file *filp, unsigned int cmd,
struct inode *target_inode = NULL;
struct coda_inode_info *cnp;
- lock_kernel();
-
/* get the Pioctl data arguments from user space */
- if (copy_from_user(&data, (void __user *)user_data, sizeof(data))) {
- error = -EINVAL;
- goto out;
- }
+ if (copy_from_user(&data, (void __user *)user_data, sizeof(data)))
+ return -EINVAL;
/*
* Look up the pathname. Note that the pathname is in
@@ -76,13 +70,12 @@ static long coda_pioctl(struct file *filp, unsigned int cmd,
error = user_lpath(data.path, &path);
if (error)
- goto out;
- else
- target_inode = path.dentry->d_inode;
+ return error;
+
+ target_inode = path.dentry->d_inode;
/* return if it is not a Coda inode */
if (target_inode->i_sb != inode->i_sb) {
- path_put(&path);
error = -EINVAL;
goto out;
}
@@ -91,10 +84,7 @@ static long coda_pioctl(struct file *filp, unsigned int cmd,
cnp = ITOC(target_inode);
error = venus_pioctl(inode->i_sb, &(cnp->c_fid), cmd, &data);
-
- path_put(&path);
-
out:
- unlock_kernel();
+ path_put(&path);
return error;
}
diff --git a/fs/coda/psdev.c b/fs/coda/psdev.c
index fdc2f3e..9a9248e 100644
--- a/fs/coda/psdev.c
+++ b/fs/coda/psdev.c
@@ -108,16 +108,9 @@ static ssize_t coda_psdev_write(struct file *file, const char __user *buf,
return -EFAULT;
if (DOWNCALL(hdr.opcode)) {
- struct super_block *sb = NULL;
- union outputArgs *dcbuf;
+ union outputArgs *dcbuf;
int size = sizeof(*dcbuf);
- sb = vcp->vc_sb;
- if ( !sb ) {
- count = nbytes;
- goto out;
- }
-
if ( nbytes < sizeof(struct coda_out_hdr) ) {
printk("coda_downcall opc %d uniq %d, not enough!\n",
hdr.opcode, hdr.unique);
@@ -137,9 +130,7 @@ static ssize_t coda_psdev_write(struct file *file, const char __user *buf,
}
/* what downcall errors does Venus handle ? */
- lock_kernel();
- error = coda_downcall(hdr.opcode, dcbuf, sb);
- unlock_kernel();
+ error = coda_downcall(vcp, hdr.opcode, dcbuf);
CODA_FREE(dcbuf, nbytes);
if (error) {
diff --git a/fs/coda/symlink.c b/fs/coda/symlink.c
index 4513b7258..af78f00 100644
--- a/fs/coda/symlink.c
+++ b/fs/coda/symlink.c
@@ -14,7 +14,6 @@
#include <linux/stat.h>
#include <linux/errno.h>
#include <linux/pagemap.h>
-#include <linux/smp_lock.h>
#include <linux/coda.h>
#include <linux/coda_linux.h>
@@ -29,11 +28,9 @@ static int coda_symlink_filler(struct file *file, struct page *page)
unsigned int len = PAGE_SIZE;
char *p = kmap(page);
- lock_kernel();
cii = ITOC(inode);
error = venus_readlink(inode->i_sb, &cii->c_fid, p, &len);
- unlock_kernel();
if (error)
goto fail;
SetPageUptodate(page);
diff --git a/fs/coda/upcall.c b/fs/coda/upcall.c
index b8893ab..4c258cb 100644
--- a/fs/coda/upcall.c
+++ b/fs/coda/upcall.c
@@ -27,6 +27,7 @@
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/slab.h>
+#include <linux/smp_lock.h>
#include <asm/uaccess.h>
#include <linux/vmalloc.h>
#include <linux/vfs.h>
@@ -667,18 +668,23 @@ static int coda_upcall(struct venus_comm *vcp,
{
union outputArgs *out;
union inputArgs *sig_inputArgs;
- struct upc_req *req, *sig_req;
- int error = 0;
+ struct upc_req *req = NULL, *sig_req;
+ int error;
+
+ lock_kernel();
if (!vcp->vc_inuse) {
printk(KERN_NOTICE "coda: Venus dead, not sending upcall\n");
- return -ENXIO;
+ error = -ENXIO;
+ goto exit;
}
/* Format the request message. */
req = kmalloc(sizeof(struct upc_req), GFP_KERNEL);
- if (!req)
- return -ENOMEM;
+ if (!req) {
+ error = -ENOMEM;
+ goto exit;
+ }
req->uc_data = (void *)buffer;
req->uc_flags = 0;
@@ -759,6 +765,7 @@ static int coda_upcall(struct venus_comm *vcp,
exit:
kfree(req);
+ unlock_kernel();
return error;
}
@@ -796,21 +803,24 @@ exit:
*
* CODA_REPLACE -- replace one CodaFid with another throughout the name cache */
-int coda_downcall(int opcode, union outputArgs * out, struct super_block *sb)
+int coda_downcall(struct venus_comm *vcp, int opcode, union outputArgs *out)
{
struct inode *inode = NULL;
struct CodaFid *fid, *newfid;
+ struct super_block *sb;
/* Handle invalidation requests. */
- if ( !sb || !sb->s_root)
- return 0;
+ lock_kernel();
+ sb = vcp->vc_sb;
+ if (!sb || !sb->s_root)
+ goto unlock_out;
switch (opcode) {
case CODA_FLUSH:
coda_cache_clear_all(sb);
shrink_dcache_sb(sb);
if (sb->s_root->d_inode)
- coda_flag_inode(sb->s_root->d_inode, C_FLUSH);
+ coda_flag_inode(sb->s_root->d_inode, C_FLUSH);
break;
case CODA_PURGEUSER:
@@ -855,9 +865,11 @@ int coda_downcall(int opcode, union outputArgs * out, struct super_block *sb)
break;
}
+unlock_out:
+ unlock_kernel();
+
if (inode)
iput(inode);
-
return 0;
}
diff --git a/include/linux/coda_psdev.h b/include/linux/coda_psdev.h
index 284b520..1e60c5a4 100644
--- a/include/linux/coda_psdev.h
+++ b/include/linux/coda_psdev.h
@@ -63,7 +63,7 @@ int venus_symlink(struct super_block *sb, struct CodaFid *fid,
int venus_access(struct super_block *sb, struct CodaFid *fid, int mask);
int venus_pioctl(struct super_block *sb, struct CodaFid *fid,
unsigned int cmd, struct PioctlData *data);
-int coda_downcall(int opcode, union outputArgs *out, struct super_block *sb);
+int coda_downcall(struct venus_comm *vcp, int opcode, union outputArgs *out);
int venus_fsync(struct super_block *sb, struct CodaFid *fid);
int venus_statfs(struct dentry *dentry, struct kstatfs *sfs);
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