#
config ATALK
tristate "Appletalk protocol support"
- depends on BKL # waiting to be removed from net/appletalk/ddp.c
select LLC
---help---
AppleTalk is the protocol that Apple computers can use to communicate
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
-#include <linux/smp_lock.h>
#include <linux/uio.h>
#include <linux/uaccess.h>
#include <linux/fs.h>
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
-#include <linux/smp_lock.h>
#include <linux/uio.h>
#include <linux/uaccess.h>
#include <linux/fs.h>
*/
/*****************************************************************************/
-#include <linux/smp_lock.h>
#include "easycap.h"
/*--------------------------------------------------------------------------*/
#include <linux/timer.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
-#include <linux/smp_lock.h>
#include <linux/kthread.h>
#include <linux/in.h>
#include <net/sock.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/spinlock.h>
-#include <linux/smp_lock.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <linux/blkdev.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
-#include <linux/smp_lock.h>
#include <scsi/scsi.h>
#include <scsi/scsi_host.h>
#include <linux/timer.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
-#include <linux/smp_lock.h>
#include <linux/in.h>
#include <net/sock.h>
#include <net/tcp.h>
#include <linux/blkdev.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
-#include <linux/smp_lock.h>
#include <linux/bio.h>
#include <linux/genhd.h>
#include <linux/file.h>
#include <linux/blk_types.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
-#include <linux/smp_lock.h>
#include <linux/genhd.h>
#include <linux/cdrom.h>
#include <linux/file.h>
#include <linux/blkdev.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
-#include <linux/smp_lock.h>
#include <scsi/scsi.h>
#include <scsi/scsi_host.h>
#include <linux/timer.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
-#include <linux/smp_lock.h>
#include <linux/in.h>
#include <net/sock.h>
#include <net/tcp.h>
#include <linux/slab.h>
#include <linux/blkdev.h>
#include <linux/spinlock.h>
-#include <linux/smp_lock.h>
#include <linux/kthread.h>
#include <linux/in.h>
#include <linux/cdrom.h>
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/errno.h>
-#include <linux/smp_lock.h>
#include <linux/string.h> /* used in new tty drivers */
#include <linux/signal.h> /* used in new tty drivers */
#include <linux/if.h>
#include <linux/ioport.h>
#include <linux/in.h>
#include <linux/slab.h>
-#include <linux/smp_lock.h>
#include <linux/tty.h>
#include <linux/errno.h>
#include <linux/string.h> /* used in new tty drivers */
#include <linux/major.h>
#include <linux/mm.h>
#include <linux/init.h>
-#include <linux/smp_lock.h>
#include <linux/sysctl.h>
#include <linux/device.h>
#include <linux/uaccess.h>
#include <linux/proc_fs.h>
#include <linux/init.h>
#include <linux/module.h>
-#include <linux/smp_lock.h>
#include <linux/device.h>
#include <linux/wait.h>
#include <linux/bitops.h>
#include <linux/vt_kern.h>
#include <linux/selection.h>
-#include <linux/smp_lock.h> /* For the moment */
-
#include <linux/kmod.h>
#include <linux/nsproxy.h>
#include <linux/selection.h>
#include <linux/tiocl.h>
#include <linux/console.h>
-#include <linux/smp_lock.h>
/* Don't take this from <ctype.h>: 011-015 on the screen aren't spaces */
#define isspace(c) ((c) == ' ')
#include <linux/kbd_kern.h>
#include <linux/console.h>
#include <linux/device.h>
-#include <linux/smp_lock.h>
#include <linux/sched.h>
#include <linux/fs.h>
#include <linux/poll.h>
#include <linux/mutex.h>
#include <linux/vt_kern.h>
#include <linux/selection.h>
-#include <linux/smp_lock.h>
#include <linux/tiocl.h>
#include <linux/kbd_kern.h>
#include <linux/consolemap.h>
#include <linux/console.h>
#include <linux/consolemap.h>
#include <linux/signal.h>
-#include <linux/smp_lock.h>
#include <linux/timex.h>
#include <asm/io.h>
config ADFS_FS
tristate "ADFS file system support (EXPERIMENTAL)"
depends on BLOCK && EXPERIMENTAL
- depends on BKL # need to fix
help
The Acorn Disc Filing System is the standard file system of the
RiscOS operating system which runs on Acorn's ARM-based Risc PC
*
* Common directory handling for ADFS
*/
-#include <linux/smp_lock.h>
#include "adfs.h"
/*
struct adfs_dir dir;
int ret = 0;
- lock_kernel();
-
if (filp->f_pos >> 32)
goto out;
ops->free(&dir);
out:
- unlock_kernel();
return ret;
}
struct object_info obj;
int error;
- lock_kernel();
error = adfs_dir_lookup_byname(dir, &dentry->d_name, &obj);
if (error == 0) {
error = -EACCES;
if (inode)
error = 0;
}
- unlock_kernel();
d_add(dentry, inode);
return ERR_PTR(error);
}
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
-#include <linux/smp_lock.h>
#include <linux/buffer_head.h>
#include <linux/writeback.h>
#include "adfs.h"
unsigned int ia_valid = attr->ia_valid;
int error;
- lock_kernel();
-
error = inode_change_ok(inode, attr);
/*
if (ia_valid & (ATTR_SIZE | ATTR_MTIME | ATTR_MODE))
mark_inode_dirty(inode);
out:
- unlock_kernel();
return error;
}
struct object_info obj;
int ret;
- lock_kernel();
obj.file_id = inode->i_ino;
obj.name_len = 0;
obj.parent_id = ADFS_I(inode)->parent_id;
obj.size = inode->i_size;
ret = adfs_dir_update(sb, &obj, wbc->sync_mode == WB_SYNC_ALL);
- unlock_kernel();
return ret;
}
#include <linux/mount.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
-#include <linux/smp_lock.h>
#include <linux/statfs.h>
#include "adfs.h"
#include "dir_f.h"
int i;
struct adfs_sb_info *asb = ADFS_SB(sb);
- lock_kernel();
-
for (i = 0; i < asb->s_map_size; i++)
brelse(asb->s_map[i].dm_bh);
kfree(asb->s_map);
kfree(asb);
sb->s_fs_info = NULL;
-
- unlock_kernel();
}
static int adfs_show_options(struct seq_file *seq, struct vfsmount *mnt)
struct adfs_sb_info *asb;
struct inode *root;
- lock_kernel();
-
sb->s_flags |= MS_NODIRATIME;
asb = kzalloc(sizeof(*asb), GFP_KERNEL);
- if (!asb) {
- unlock_kernel();
+ if (!asb)
return -ENOMEM;
- }
sb->s_fs_info = asb;
/* set default options */
adfs_error(sb, "get root inode failed\n");
goto error;
}
- unlock_kernel();
return 0;
error_free_bh:
error:
sb->s_fs_info = NULL;
kfree(asb);
- unlock_kernel();
return -EINVAL;
}
config HPFS_FS
tristate "OS/2 HPFS file system support"
depends on BLOCK
- depends on BKL # nontrivial to fix
+ depends on BROKEN || !PREEMPT
help
OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
is the file system used for organizing files on OS/2 hard disk
* directory VFS functions
*/
-#include <linux/smp_lock.h>
#include <linux/slab.h>
#include "hpfs_fn.h"
static int hpfs_dir_release(struct inode *inode, struct file *filp)
{
- lock_kernel();
+ hpfs_lock(inode->i_sb);
hpfs_del_pos(inode, &filp->f_pos);
/*hpfs_write_if_changed(inode);*/
- unlock_kernel();
+ hpfs_unlock(inode->i_sb);
return 0;
}
struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
struct super_block *s = i->i_sb;
- lock_kernel();
+ hpfs_lock(s);
/*printk("dir lseek\n");*/
if (new_off == 0 || new_off == 1 || new_off == 11 || new_off == 12 || new_off == 13) goto ok;
}
mutex_unlock(&i->i_mutex);
ok:
- unlock_kernel();
+ hpfs_unlock(s);
return filp->f_pos = new_off;
fail:
mutex_unlock(&i->i_mutex);
/*printk("illegal lseek: %016llx\n", new_off);*/
- unlock_kernel();
+ hpfs_unlock(s);
return -ESPIPE;
}
int c1, c2 = 0;
int ret = 0;
- lock_kernel();
+ hpfs_lock(inode->i_sb);
if (hpfs_sb(inode->i_sb)->sb_chk) {
if (hpfs_chk_sectors(inode->i_sb, inode->i_ino, 1, "dir_fnode")) {
hpfs_brelse4(&qbh);
}
out:
- unlock_kernel();
+ hpfs_unlock(inode->i_sb);
return ret;
}
struct inode *result = NULL;
struct hpfs_inode_info *hpfs_result;
- lock_kernel();
+ hpfs_lock(dir->i_sb);
if ((err = hpfs_chk_name(name, &len))) {
if (err == -ENAMETOOLONG) {
- unlock_kernel();
+ hpfs_unlock(dir->i_sb);
return ERR_PTR(-ENAMETOOLONG);
}
goto end_add;
end:
end_add:
- unlock_kernel();
+ hpfs_unlock(dir->i_sb);
d_add(dentry, result);
return NULL;
/*bail:*/
- unlock_kernel();
+ hpfs_unlock(dir->i_sb);
return ERR_PTR(-ENOENT);
}
* file VFS functions
*/
-#include <linux/smp_lock.h>
#include "hpfs_fn.h"
#define BLOCKS(size) (((size) + 511) >> 9)
static int hpfs_file_release(struct inode *inode, struct file *file)
{
- lock_kernel();
+ hpfs_lock(inode->i_sb);
hpfs_write_if_changed(inode);
- unlock_kernel();
+ hpfs_unlock(inode->i_sb);
return 0;
}
static void hpfs_truncate(struct inode *i)
{
if (IS_IMMUTABLE(i)) return /*-EPERM*/;
- lock_kernel();
+ hpfs_lock(i->i_sb);
hpfs_i(i)->i_n_secs = 0;
i->i_blocks = 1 + ((i->i_size + 511) >> 9);
hpfs_i(i)->mmu_private = i->i_size;
hpfs_truncate_btree(i->i_sb, i->i_ino, 1, ((i->i_size + 511) >> 9));
hpfs_write_inode(i);
hpfs_i(i)->i_n_secs = 0;
- unlock_kernel();
+ hpfs_unlock(i->i_sb);
}
static int hpfs_get_block(struct inode *inode, sector_t iblock, struct buffer_head *bh_result, int create)
extern struct timezone sys_tz;
return t - sys_tz.tz_minuteswest * 60 - hpfs_sb(s)->sb_timeshift;
}
+
+/*
+ * Locking:
+ *
+ * hpfs_lock() is a leftover from the big kernel lock.
+ * Right now, these functions are empty and only left
+ * for documentation purposes. The file system no longer
+ * works on SMP systems, so the lock is not needed
+ * any more.
+ *
+ * If someone is interested in making it work again, this
+ * would be the place to start by adding a per-superblock
+ * mutex and fixing all the bugs and performance issues
+ * caused by that.
+ */
+static inline void hpfs_lock(struct super_block *s)
+{
+}
+
+static inline void hpfs_unlock(struct super_block *s)
+{
+}
* inode VFS functions
*/
-#include <linux/smp_lock.h>
#include <linux/slab.h>
#include "hpfs_fn.h"
struct inode *inode = dentry->d_inode;
int error = -EINVAL;
- lock_kernel();
+ hpfs_lock(inode->i_sb);
if (inode->i_ino == hpfs_sb(inode->i_sb)->sb_root)
goto out_unlock;
if ((attr->ia_valid & ATTR_SIZE) && attr->ia_size > inode->i_size)
hpfs_write_inode(inode);
out_unlock:
- unlock_kernel();
+ hpfs_unlock(inode->i_sb);
return error;
}
truncate_inode_pages(&inode->i_data, 0);
end_writeback(inode);
if (!inode->i_nlink) {
- lock_kernel();
+ hpfs_lock(inode->i_sb);
hpfs_remove_fnode(inode->i_sb, inode->i_ino);
- unlock_kernel();
+ hpfs_unlock(inode->i_sb);
}
}
* adding & removing files & directories
*/
#include <linux/sched.h>
-#include <linux/smp_lock.h>
#include "hpfs_fn.h"
static int hpfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
struct hpfs_dirent dee;
int err;
if ((err = hpfs_chk_name(name, &len))) return err==-ENOENT ? -EINVAL : err;
- lock_kernel();
+ hpfs_lock(dir->i_sb);
err = -ENOSPC;
fnode = hpfs_alloc_fnode(dir->i_sb, hpfs_i(dir)->i_dno, &fno, &bh);
if (!fnode)
}
d_instantiate(dentry, result);
mutex_unlock(&hpfs_i(dir)->i_mutex);
- unlock_kernel();
+ hpfs_unlock(dir->i_sb);
return 0;
bail3:
mutex_unlock(&hpfs_i(dir)->i_mutex);
brelse(bh);
hpfs_free_sectors(dir->i_sb, fno, 1);
bail:
- unlock_kernel();
+ hpfs_unlock(dir->i_sb);
return err;
}
int err;
if ((err = hpfs_chk_name(name, &len)))
return err==-ENOENT ? -EINVAL : err;
- lock_kernel();
+ hpfs_lock(dir->i_sb);
err = -ENOSPC;
fnode = hpfs_alloc_fnode(dir->i_sb, hpfs_i(dir)->i_dno, &fno, &bh);
if (!fnode)
}
d_instantiate(dentry, result);
mutex_unlock(&hpfs_i(dir)->i_mutex);
- unlock_kernel();
+ hpfs_unlock(dir->i_sb);
return 0;
bail2:
brelse(bh);
hpfs_free_sectors(dir->i_sb, fno, 1);
bail:
- unlock_kernel();
+ hpfs_unlock(dir->i_sb);
return err;
}
if (hpfs_sb(dir->i_sb)->sb_eas < 2) return -EPERM;
if (!new_valid_dev(rdev))
return -EINVAL;
- lock_kernel();
+ hpfs_lock(dir->i_sb);
err = -ENOSPC;
fnode = hpfs_alloc_fnode(dir->i_sb, hpfs_i(dir)->i_dno, &fno, &bh);
if (!fnode)
d_instantiate(dentry, result);
mutex_unlock(&hpfs_i(dir)->i_mutex);
brelse(bh);
- unlock_kernel();
+ hpfs_unlock(dir->i_sb);
return 0;
bail2:
mutex_unlock(&hpfs_i(dir)->i_mutex);
brelse(bh);
hpfs_free_sectors(dir->i_sb, fno, 1);
bail:
- unlock_kernel();
+ hpfs_unlock(dir->i_sb);
return err;
}
struct inode *result;
int err;
if ((err = hpfs_chk_name(name, &len))) return err==-ENOENT ? -EINVAL : err;
- lock_kernel();
+ hpfs_lock(dir->i_sb);
if (hpfs_sb(dir->i_sb)->sb_eas < 2) {
- unlock_kernel();
+ hpfs_unlock(dir->i_sb);
return -EPERM;
}
err = -ENOSPC;
hpfs_write_inode_nolock(result);
d_instantiate(dentry, result);
mutex_unlock(&hpfs_i(dir)->i_mutex);
- unlock_kernel();
+ hpfs_unlock(dir->i_sb);
return 0;
bail2:
mutex_unlock(&hpfs_i(dir)->i_mutex);
brelse(bh);
hpfs_free_sectors(dir->i_sb, fno, 1);
bail:
- unlock_kernel();
+ hpfs_unlock(dir->i_sb);
return err;
}
int rep = 0;
int err;
- lock_kernel();
+ hpfs_lock(dir->i_sb);
hpfs_adjust_length(name, &len);
again:
mutex_lock(&hpfs_i(inode)->i_parent_mutex);
dentry_unhash(dentry);
if (!d_unhashed(dentry)) {
dput(dentry);
- unlock_kernel();
+ hpfs_unlock(dir->i_sb);
return -ENOSPC;
}
if (generic_permission(inode, MAY_WRITE, 0, NULL) ||
if (!err)
goto again;
}
- unlock_kernel();
+ hpfs_unlock(dir->i_sb);
return -ENOSPC;
default:
drop_nlink(inode);
out:
mutex_unlock(&hpfs_i(dir)->i_mutex);
mutex_unlock(&hpfs_i(inode)->i_parent_mutex);
- unlock_kernel();
+ hpfs_unlock(dir->i_sb);
return err;
}
int r;
hpfs_adjust_length(name, &len);
- lock_kernel();
+ hpfs_lock(dir->i_sb);
mutex_lock(&hpfs_i(inode)->i_parent_mutex);
mutex_lock(&hpfs_i(dir)->i_mutex);
err = -ENOENT;
out:
mutex_unlock(&hpfs_i(dir)->i_mutex);
mutex_unlock(&hpfs_i(inode)->i_parent_mutex);
- unlock_kernel();
+ hpfs_unlock(dir->i_sb);
return err;
}
int err;
err = -EIO;
- lock_kernel();
+ hpfs_lock(i->i_sb);
if (!(fnode = hpfs_map_fnode(i->i_sb, i->i_ino, &bh)))
goto fail;
err = hpfs_read_ea(i->i_sb, fnode, "SYMLINK", link, PAGE_SIZE);
brelse(bh);
if (err)
goto fail;
- unlock_kernel();
+ hpfs_unlock(i->i_sb);
SetPageUptodate(page);
kunmap(page);
unlock_page(page);
return 0;
fail:
- unlock_kernel();
+ hpfs_unlock(i->i_sb);
SetPageError(page);
kunmap(page);
unlock_page(page);
err = 0;
hpfs_adjust_length(old_name, &old_len);
- lock_kernel();
+ hpfs_lock(i->i_sb);
/* order doesn't matter, due to VFS exclusion */
mutex_lock(&hpfs_i(i)->i_parent_mutex);
if (new_inode)
mutex_unlock(&hpfs_i(i)->i_parent_mutex);
if (new_inode)
mutex_unlock(&hpfs_i(new_inode)->i_parent_mutex);
- unlock_kernel();
+ hpfs_unlock(i->i_sb);
return err;
}
#include <linux/statfs.h>
#include <linux/magic.h>
#include <linux/sched.h>
-#include <linux/smp_lock.h>
#include <linux/bitmap.h>
#include <linux/slab.h>
{
struct hpfs_sb_info *sbi = hpfs_sb(s);
- lock_kernel();
-
kfree(sbi->sb_cp_table);
kfree(sbi->sb_bmp_dir);
unmark_dirty(s);
s->s_fs_info = NULL;
kfree(sbi);
-
- unlock_kernel();
}
unsigned hpfs_count_one_bitmap(struct super_block *s, secno secno)
struct super_block *s = dentry->d_sb;
struct hpfs_sb_info *sbi = hpfs_sb(s);
u64 id = huge_encode_dev(s->s_bdev->bd_dev);
- lock_kernel();
+ hpfs_lock(s);
/*if (sbi->sb_n_free == -1) {*/
sbi->sb_n_free = count_bitmaps(s);
buf->f_fsid.val[1] = (u32)(id >> 32);
buf->f_namelen = 254;
- unlock_kernel();
+ hpfs_unlock(s);
return 0;
}
*flags |= MS_NOATIME;
- lock_kernel();
+ hpfs_lock(s);
lock_super(s);
uid = sbi->sb_uid; gid = sbi->sb_gid;
umask = 0777 & ~sbi->sb_mode;
replace_mount_options(s, new_opts);
unlock_super(s);
- unlock_kernel();
+ hpfs_unlock(s);
return 0;
out_err:
unlock_super(s);
- unlock_kernel();
+ hpfs_unlock(s);
kfree(new_opts);
return -EINVAL;
}
int o;
- lock_kernel();
+ if (num_possible_cpus() > 1) {
+ printk(KERN_ERR "HPFS is not SMP safe\n");
+ return -EINVAL;
+ }
save_mount_options(s, options);
sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
if (!sbi) {
- unlock_kernel();
return -ENOMEM;
}
s->s_fs_info = sbi;
root->i_blocks = 5;
hpfs_brelse4(&qbh);
}
- unlock_kernel();
return 0;
bail4: brelse(bh2);
kfree(sbi->sb_cp_table);
s->s_fs_info = NULL;
kfree(sbi);
- unlock_kernel();
return -EINVAL;
}
/*
* Protects the two list heads above, plus the inode->i_flock list
- * FIXME: should use a spinlock, once lockd and ceph are ready.
*/
void lock_flocks(void)
{
config UFS_FS
tristate "UFS file system support (read only)"
depends on BLOCK
- depends on BKL # probably fixable
help
BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD,
OpenBSD and NeXTstep) use a file system called UFS. Some System V
#include <linux/stat.h>
#include <linux/string.h>
#include <linux/mm.h>
-#include <linux/smp_lock.h>
#include <linux/buffer_head.h>
#include <linux/writeback.h>
#include "swab.h"
#include "util.h"
-static u64 ufs_frag_map(struct inode *inode, sector_t frag);
+static u64 ufs_frag_map(struct inode *inode, sector_t frag, bool needs_lock);
static int ufs_block_to_path(struct inode *inode, sector_t i_block, sector_t offsets[4])
{
* the begining of the filesystem.
*/
-static u64 ufs_frag_map(struct inode *inode, sector_t frag)
+static u64 ufs_frag_map(struct inode *inode, sector_t frag, bool needs_lock)
{
struct ufs_inode_info *ufsi = UFS_I(inode);
struct super_block *sb = inode->i_sb;
p = offsets;
- lock_kernel();
+ if (needs_lock)
+ lock_ufs(sb);
if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
goto ufs2;
ret = temp + (u64) (frag & uspi->s_fpbmask);
out:
- unlock_kernel();
+ if (needs_lock)
+ unlock_ufs(sb);
return ret;
}
int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create)
{
struct super_block * sb = inode->i_sb;
- struct ufs_sb_private_info * uspi = UFS_SB(sb)->s_uspi;
+ struct ufs_sb_info * sbi = UFS_SB(sb);
+ struct ufs_sb_private_info * uspi = sbi->s_uspi;
struct buffer_head * bh;
int ret, err, new;
unsigned long ptr,phys;
u64 phys64 = 0;
+ bool needs_lock = (sbi->mutex_owner != current);
if (!create) {
- phys64 = ufs_frag_map(inode, fragment);
+ phys64 = ufs_frag_map(inode, fragment, needs_lock);
UFSD("phys64 = %llu\n", (unsigned long long)phys64);
if (phys64)
map_bh(bh_result, sb, phys64);
ret = 0;
bh = NULL;
- lock_kernel();
+ if (needs_lock)
+ lock_ufs(sb);
UFSD("ENTER, ino %lu, fragment %llu\n", inode->i_ino, (unsigned long long)fragment);
if (fragment >
set_buffer_new(bh_result);
map_bh(bh_result, sb, phys);
abort:
- unlock_kernel();
+ if (needs_lock)
+ unlock_ufs(sb);
+
return err;
abort_too_big:
goto abort;
}
-static struct buffer_head *ufs_getfrag(struct inode *inode,
- unsigned int fragment,
- int create, int *err)
-{
- struct buffer_head dummy;
- int error;
-
- dummy.b_state = 0;
- dummy.b_blocknr = -1000;
- error = ufs_getfrag_block(inode, fragment, &dummy, create);
- *err = error;
- if (!error && buffer_mapped(&dummy)) {
- struct buffer_head *bh;
- bh = sb_getblk(inode->i_sb, dummy.b_blocknr);
- if (buffer_new(&dummy)) {
- memset(bh->b_data, 0, inode->i_sb->s_blocksize);
- set_buffer_uptodate(bh);
- mark_buffer_dirty(bh);
- }
- return bh;
- }
- return NULL;
-}
-
-struct buffer_head * ufs_bread (struct inode * inode, unsigned fragment,
- int create, int * err)
-{
- struct buffer_head * bh;
-
- UFSD("ENTER, ino %lu, fragment %u\n", inode->i_ino, fragment);
- bh = ufs_getfrag (inode, fragment, create, err);
- if (!bh || buffer_uptodate(bh))
- return bh;
- ll_rw_block (READ, 1, &bh);
- wait_on_buffer (bh);
- if (buffer_uptodate(bh))
- return bh;
- brelse (bh);
- *err = -EIO;
- return NULL;
-}
-
static int ufs_writepage(struct page *page, struct writeback_control *wbc)
{
return block_write_full_page(page,ufs_getfrag_block,wbc);
int ufs_write_inode(struct inode *inode, struct writeback_control *wbc)
{
int ret;
- lock_kernel();
+ lock_ufs(inode->i_sb);
ret = ufs_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
- unlock_kernel();
+ unlock_ufs(inode->i_sb);
return ret;
}
if (want_delete) {
loff_t old_i_size;
/*UFS_I(inode)->i_dtime = CURRENT_TIME;*/
- lock_kernel();
+ lock_ufs(inode->i_sb);
mark_inode_dirty(inode);
ufs_update_inode(inode, IS_SYNC(inode));
old_i_size = inode->i_size;
inode->i_size = 0;
if (inode->i_blocks && ufs_truncate(inode, old_i_size))
ufs_warning(inode->i_sb, __func__, "ufs_truncate failed\n");
- unlock_kernel();
+ unlock_ufs(inode->i_sb);
}
invalidate_inode_buffers(inode);
end_writeback(inode);
if (want_delete) {
- lock_kernel();
+ lock_ufs(inode->i_sb);
ufs_free_inode (inode);
- unlock_kernel();
+ unlock_ufs(inode->i_sb);
}
}
#include <linux/time.h>
#include <linux/fs.h>
-#include <linux/smp_lock.h>
#include "ufs_fs.h"
#include "ufs.h"
if (dentry->d_name.len > UFS_MAXNAMLEN)
return ERR_PTR(-ENAMETOOLONG);
- lock_kernel();
+ lock_ufs(dir->i_sb);
ino = ufs_inode_by_name(dir, &dentry->d_name);
if (ino) {
inode = ufs_iget(dir->i_sb, ino);
if (IS_ERR(inode)) {
- unlock_kernel();
+ unlock_ufs(dir->i_sb);
return ERR_CAST(inode);
}
}
- unlock_kernel();
+ unlock_ufs(dir->i_sb);
d_add(dentry, inode);
return NULL;
}
inode->i_fop = &ufs_file_operations;
inode->i_mapping->a_ops = &ufs_aops;
mark_inode_dirty(inode);
- lock_kernel();
+ lock_ufs(dir->i_sb);
err = ufs_add_nondir(dentry, inode);
- unlock_kernel();
+ unlock_ufs(dir->i_sb);
}
UFSD("END: err=%d\n", err);
return err;
init_special_inode(inode, mode, rdev);
ufs_set_inode_dev(inode->i_sb, UFS_I(inode), rdev);
mark_inode_dirty(inode);
- lock_kernel();
+ lock_ufs(dir->i_sb);
err = ufs_add_nondir(dentry, inode);
- unlock_kernel();
+ unlock_ufs(dir->i_sb);
}
return err;
}
if (l > sb->s_blocksize)
goto out_notlocked;
- lock_kernel();
+ lock_ufs(dir->i_sb);
inode = ufs_new_inode(dir, S_IFLNK | S_IRWXUGO);
err = PTR_ERR(inode);
if (IS_ERR(inode))
err = ufs_add_nondir(dentry, inode);
out:
- unlock_kernel();
+ unlock_ufs(dir->i_sb);
out_notlocked:
return err;
struct inode *inode = old_dentry->d_inode;
int error;
- lock_kernel();
+ lock_ufs(dir->i_sb);
if (inode->i_nlink >= UFS_LINK_MAX) {
- unlock_kernel();
+ unlock_ufs(dir->i_sb);
return -EMLINK;
}
ihold(inode);
error = ufs_add_nondir(dentry, inode);
- unlock_kernel();
+ unlock_ufs(dir->i_sb);
return error;
}
if (dir->i_nlink >= UFS_LINK_MAX)
goto out;
- lock_kernel();
+ lock_ufs(dir->i_sb);
inode_inc_link_count(dir);
inode = ufs_new_inode(dir, S_IFDIR|mode);
err = ufs_add_link(dentry, inode);
if (err)
goto out_fail;
- unlock_kernel();
+ unlock_ufs(dir->i_sb);
d_instantiate(dentry, inode);
out:
iput (inode);
out_dir:
inode_dec_link_count(dir);
- unlock_kernel();
+ unlock_ufs(dir->i_sb);
goto out;
}
struct inode * inode = dentry->d_inode;
int err= -ENOTEMPTY;
- lock_kernel();
+ lock_ufs(dir->i_sb);
if (ufs_empty_dir (inode)) {
err = ufs_unlink(dir, dentry);
if (!err) {
inode_dec_link_count(dir);
}
}
- unlock_kernel();
+ unlock_ufs(dir->i_sb);
return err;
}
#include <linux/blkdev.h>
#include <linux/init.h>
#include <linux/parser.h>
-#include <linux/smp_lock.h>
#include <linux/buffer_head.h>
#include <linux/vfs.h>
#include <linux/log2.h>
#include "swab.h"
#include "util.h"
+void lock_ufs(struct super_block *sb)
+{
+#if defined(CONFIG_SMP) || defined (CONFIG_PREEMPT)
+ struct ufs_sb_info *sbi = UFS_SB(sb);
+
+ mutex_lock(&sbi->mutex);
+ sbi->mutex_owner = current;
+#endif
+}
+
+void unlock_ufs(struct super_block *sb)
+{
+#if defined(CONFIG_SMP) || defined (CONFIG_PREEMPT)
+ struct ufs_sb_info *sbi = UFS_SB(sb);
+
+ sbi->mutex_owner = NULL;
+ mutex_unlock(&sbi->mutex);
+#endif
+}
+
static struct inode *ufs_nfs_get_inode(struct super_block *sb, u64 ino, u32 generation)
{
struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
struct ufs_super_block_first * usb1;
va_list args;
- lock_kernel();
uspi = UFS_SB(sb)->s_uspi;
usb1 = ubh_get_usb_first(uspi);
*/
size = uspi->s_cssize;
blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
- base = space = kmalloc(size, GFP_KERNEL);
+ base = space = kmalloc(size, GFP_NOFS);
if (!base)
goto failed;
sbi->s_csp = (struct ufs_csum *)space;
* Read cylinder group (we read only first fragment from block
* at this time) and prepare internal data structures for cg caching.
*/
- if (!(sbi->s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_KERNEL)))
+ if (!(sbi->s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_NOFS)))
goto failed;
for (i = 0; i < uspi->s_ncg; i++)
sbi->s_ucg[i] = NULL;
ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data);
}
for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
- if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_KERNEL)))
+ if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_NOFS)))
goto failed;
sbi->s_cgno[i] = UFS_CGNO_EMPTY;
}
UFSD("ENTER\n");
- lock_kernel();
-
ufs_put_cstotal(sb);
size = uspi->s_cssize;
blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
kfree (sbi->s_ucg);
kfree (base);
- unlock_kernel();
-
UFSD("EXIT\n");
}
unsigned maxsymlen;
int ret = -EINVAL;
- lock_kernel();
-
uspi = NULL;
ubh = NULL;
flags = 0;
goto failed;
}
#endif
+ mutex_init(&sbi->mutex);
/*
* Set default mount options
* Parse mount options
goto failed;
UFSD("EXIT\n");
- unlock_kernel();
return 0;
dalloc_failed:
kfree(sbi);
sb->s_fs_info = NULL;
UFSD("EXIT (FAILED)\n");
- unlock_kernel();
return ret;
failed_nomem:
UFSD("EXIT (NOMEM)\n");
- unlock_kernel();
return -ENOMEM;
}
struct ufs_super_block_third * usb3;
unsigned flags;
+ lock_ufs(sb);
lock_super(sb);
- lock_kernel();
UFSD("ENTER\n");
sb->s_dirt = 0;
UFSD("EXIT\n");
- unlock_kernel();
unlock_super(sb);
+ unlock_ufs(sb);
return 0;
}
unsigned new_mount_opt, ufstype;
unsigned flags;
- lock_kernel();
+ lock_ufs(sb);
lock_super(sb);
uspi = UFS_SB(sb)->s_uspi;
flags = UFS_SB(sb)->s_flags;
ufs_set_opt (new_mount_opt, ONERROR_LOCK);
if (!ufs_parse_options (data, &new_mount_opt)) {
unlock_super(sb);
- unlock_kernel();
+ unlock_ufs(sb);
return -EINVAL;
}
if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) {
} else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) {
printk("ufstype can't be changed during remount\n");
unlock_super(sb);
- unlock_kernel();
+ unlock_ufs(sb);
return -EINVAL;
}
if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
UFS_SB(sb)->s_mount_opt = new_mount_opt;
unlock_super(sb);
- unlock_kernel();
+ unlock_ufs(sb);
return 0;
}
printk("ufs was compiled with read-only support, "
"can't be mounted as read-write\n");
unlock_super(sb);
- unlock_kernel();
+ unlock_ufs(sb);
return -EINVAL;
#else
if (ufstype != UFS_MOUNT_UFSTYPE_SUN &&
ufstype != UFS_MOUNT_UFSTYPE_UFS2) {
printk("this ufstype is read-only supported\n");
unlock_super(sb);
- unlock_kernel();
+ unlock_ufs(sb);
return -EINVAL;
}
if (!ufs_read_cylinder_structures(sb)) {
printk("failed during remounting\n");
unlock_super(sb);
- unlock_kernel();
+ unlock_ufs(sb);
return -EPERM;
}
sb->s_flags &= ~MS_RDONLY;
}
UFS_SB(sb)->s_mount_opt = new_mount_opt;
unlock_super(sb);
- unlock_kernel();
+ unlock_ufs(sb);
return 0;
}
struct ufs_super_block_third *usb3;
u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
- lock_kernel();
+ lock_ufs(sb);
usb1 = ubh_get_usb_first(uspi);
usb2 = ubh_get_usb_second(uspi);
buf->f_fsid.val[0] = (u32)id;
buf->f_fsid.val[1] = (u32)(id >> 32);
- unlock_kernel();
+ unlock_ufs(sb);
return 0;
}
static struct inode *ufs_alloc_inode(struct super_block *sb)
{
struct ufs_inode_info *ei;
- ei = (struct ufs_inode_info *)kmem_cache_alloc(ufs_inode_cachep, GFP_KERNEL);
+ ei = (struct ufs_inode_info *)kmem_cache_alloc(ufs_inode_cachep, GFP_NOFS);
if (!ei)
return NULL;
ei->vfs_inode.i_version = 1;
#include <linux/time.h>
#include <linux/stat.h>
#include <linux/string.h>
-#include <linux/smp_lock.h>
#include <linux/buffer_head.h>
#include <linux/blkdev.h>
#include <linux/sched.h>
block_truncate_page(inode->i_mapping, inode->i_size, ufs_getfrag_block);
- lock_kernel();
while (1) {
retry = ufs_trunc_direct(inode);
retry |= ufs_trunc_indirect(inode, UFS_IND_BLOCK,
inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
ufsi->i_lastfrag = DIRECT_FRAGMENT;
- unlock_kernel();
mark_inode_dirty(inode);
out:
UFSD("EXIT: err %d\n", err);
/* XXX(truncate): truncate_setsize should be called last */
truncate_setsize(inode, attr->ia_size);
+ lock_ufs(inode->i_sb);
error = ufs_truncate(inode, old_i_size);
+ unlock_ufs(inode->i_sb);
if (error)
return error;
}
unsigned s_cgno[UFS_MAX_GROUP_LOADED];
unsigned short s_cg_loaded;
unsigned s_mount_opt;
+ struct mutex mutex;
+ struct task_struct *mutex_owner;
};
struct ufs_inode_info {
extern int ufs_write_inode (struct inode *, struct writeback_control *);
extern int ufs_sync_inode (struct inode *);
extern void ufs_evict_inode (struct inode *);
-extern struct buffer_head * ufs_bread (struct inode *, unsigned, int, int *);
extern int ufs_getfrag_block (struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create);
/* namei.c */
return do_div(b, uspi->s_fpg);
}
+extern void lock_ufs(struct super_block *sb);
+extern void unlock_ufs(struct super_block *sb);
+
#endif /* _UFS_UFS_H */
if (count > UFS_MAXFRAG)
return NULL;
ubh = (struct ufs_buffer_head *)
- kmalloc (sizeof (struct ufs_buffer_head), GFP_KERNEL);
+ kmalloc (sizeof (struct ufs_buffer_head), GFP_NOFS);
if (!ubh)
return NULL;
ubh->fragment = fragment;
*/
#define in_nmi() (preempt_count() & NMI_MASK)
-#if defined(CONFIG_PREEMPT) && defined(CONFIG_BKL)
-# include <linux/sched.h>
-# define PREEMPT_INATOMIC_BASE (current->lock_depth >= 0)
-#else
-# define PREEMPT_INATOMIC_BASE 0
-#endif
-
#if defined(CONFIG_PREEMPT)
# define PREEMPT_CHECK_OFFSET 1
#else
* used in the general case to determine whether sleeping is possible.
* Do not use in_atomic() in driver code.
*/
-#define in_atomic() ((preempt_count() & ~PREEMPT_ACTIVE) != PREEMPT_INATOMIC_BASE)
+#define in_atomic() ((preempt_count() & ~PREEMPT_ACTIVE) != 0)
/*
* Check whether we were atomic before we did preempt_disable():
+++ /dev/null
-#ifndef __LINUX_SMPLOCK_H
-#define __LINUX_SMPLOCK_H
-
-#ifdef CONFIG_LOCK_KERNEL
-#include <linux/sched.h>
-
-extern int __lockfunc __reacquire_kernel_lock(void);
-extern void __lockfunc __release_kernel_lock(void);
-
-/*
- * Release/re-acquire global kernel lock for the scheduler
- */
-#define release_kernel_lock(tsk) do { \
- if (unlikely((tsk)->lock_depth >= 0)) \
- __release_kernel_lock(); \
-} while (0)
-
-static inline int reacquire_kernel_lock(struct task_struct *task)
-{
- if (unlikely(task->lock_depth >= 0))
- return __reacquire_kernel_lock();
- return 0;
-}
-
-extern void __lockfunc
-_lock_kernel(const char *func, const char *file, int line)
-__acquires(kernel_lock);
-
-extern void __lockfunc
-_unlock_kernel(const char *func, const char *file, int line)
-__releases(kernel_lock);
-
-#define lock_kernel() do { \
- _lock_kernel(__func__, __FILE__, __LINE__); \
-} while (0)
-
-#define unlock_kernel() do { \
- _unlock_kernel(__func__, __FILE__, __LINE__); \
-} while (0)
-
-/*
- * Various legacy drivers don't really need the BKL in a specific
- * function, but they *do* need to know that the BKL became available.
- * This function just avoids wrapping a bunch of lock/unlock pairs
- * around code which doesn't really need it.
- */
-static inline void cycle_kernel_lock(void)
-{
- lock_kernel();
- unlock_kernel();
-}
-
-#else
-
-#ifdef CONFIG_BKL /* provoke build bug if not set */
-#define lock_kernel()
-#define unlock_kernel()
-#define cycle_kernel_lock() do { } while(0)
-#endif /* CONFIG_BKL */
-
-#define release_kernel_lock(task) do { } while(0)
-#define reacquire_kernel_lock(task) 0
-
-#endif /* CONFIG_LOCK_KERNEL */
-#endif /* __LINUX_SMPLOCK_H */
+++ /dev/null
-#undef TRACE_SYSTEM
-#define TRACE_SYSTEM bkl
-
-#if !defined(_TRACE_BKL_H) || defined(TRACE_HEADER_MULTI_READ)
-#define _TRACE_BKL_H
-
-#include <linux/tracepoint.h>
-
-TRACE_EVENT(lock_kernel,
-
- TP_PROTO(const char *func, const char *file, int line),
-
- TP_ARGS(func, file, line),
-
- TP_STRUCT__entry(
- __field( int, depth )
- __field_ext( const char *, func, FILTER_PTR_STRING )
- __field_ext( const char *, file, FILTER_PTR_STRING )
- __field( int, line )
- ),
-
- TP_fast_assign(
- /* We want to record the lock_depth after lock is acquired */
- __entry->depth = current->lock_depth + 1;
- __entry->func = func;
- __entry->file = file;
- __entry->line = line;
- ),
-
- TP_printk("depth=%d file:line=%s:%d func=%s()", __entry->depth,
- __entry->file, __entry->line, __entry->func)
-);
-
-TRACE_EVENT(unlock_kernel,
-
- TP_PROTO(const char *func, const char *file, int line),
-
- TP_ARGS(func, file, line),
-
- TP_STRUCT__entry(
- __field(int, depth )
- __field(const char *, func )
- __field(const char *, file )
- __field(int, line )
- ),
-
- TP_fast_assign(
- __entry->depth = current->lock_depth;
- __entry->func = func;
- __entry->file = file;
- __entry->line = line;
- ),
-
- TP_printk("depth=%d file:line=%s:%d func=%s()", __entry->depth,
- __entry->file, __entry->line, __entry->func)
-);
-
-#endif /* _TRACE_BKL_H */
-
-/* This part must be outside protection */
-#include <trace/define_trace.h>
depends on BROKEN || !SMP
default y
-config LOCK_KERNEL
- bool
- depends on (SMP || PREEMPT) && BKL
- default y
-
config INIT_ENV_ARG_LIMIT
int
default 32 if !UML
#include <linux/init.h>
#include <linux/uaccess.h>
#include <linux/highmem.h>
-#include <linux/smp_lock.h>
#include <asm/mmu_context.h>
#include <linux/interrupt.h>
#include <linux/capability.h>
rcu_note_context_switch(cpu);
prev = rq->curr;
- release_kernel_lock(prev);
-need_resched_nonpreemptible:
-
schedule_debug(prev);
if (sched_feat(HRTICK))
post_schedule(rq);
- if (unlikely(reacquire_kernel_lock(prev)))
- goto need_resched_nonpreemptible;
-
preempt_enable_no_resched();
if (need_resched())
goto need_resched;
{
int nested = (preempt_count() & ~PREEMPT_ACTIVE) + rcu_preempt_depth();
- return (nested == PREEMPT_INATOMIC_BASE + preempt_offset);
+ return (nested == preempt_offset);
}
void __might_sleep(const char *file, int line, int preempt_offset)
This feature allows mutex semantics violations to be detected and
reported.
-config BKL
- bool "Big Kernel Lock" if (SMP || PREEMPT)
- default y
- help
- This is the traditional lock that is used in old code instead
- of proper locking. All drivers that use the BKL should depend
- on this symbol.
- Say Y here unless you are working on removing the BKL.
-
config DEBUG_LOCK_ALLOC
bool "Lock debugging: detect incorrect freeing of live locks"
depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
CFLAGS_hweight.o = $(subst $(quote),,$(CONFIG_ARCH_HWEIGHT_CFLAGS))
obj-$(CONFIG_GENERIC_HWEIGHT) += hweight.o
-obj-$(CONFIG_LOCK_KERNEL) += kernel_lock.o
obj-$(CONFIG_BTREE) += btree.o
obj-$(CONFIG_DEBUG_PREEMPT) += smp_processor_id.o
obj-$(CONFIG_DEBUG_LIST) += list_debug.o
+++ /dev/null
-/*
- * lib/kernel_lock.c
- *
- * This is the traditional BKL - big kernel lock. Largely
- * relegated to obsolescence, but used by various less
- * important (or lazy) subsystems.
- */
-#include <linux/module.h>
-#include <linux/kallsyms.h>
-#include <linux/semaphore.h>
-#include <linux/smp_lock.h>
-
-#define CREATE_TRACE_POINTS
-#include <trace/events/bkl.h>
-
-/*
- * The 'big kernel lock'
- *
- * This spinlock is taken and released recursively by lock_kernel()
- * and unlock_kernel(). It is transparently dropped and reacquired
- * over schedule(). It is used to protect legacy code that hasn't
- * been migrated to a proper locking design yet.
- *
- * Don't use in new code.
- */
-static __cacheline_aligned_in_smp DEFINE_RAW_SPINLOCK(kernel_flag);
-
-
-/*
- * Acquire/release the underlying lock from the scheduler.
- *
- * This is called with preemption disabled, and should
- * return an error value if it cannot get the lock and
- * TIF_NEED_RESCHED gets set.
- *
- * If it successfully gets the lock, it should increment
- * the preemption count like any spinlock does.
- *
- * (This works on UP too - do_raw_spin_trylock will never
- * return false in that case)
- */
-int __lockfunc __reacquire_kernel_lock(void)
-{
- while (!do_raw_spin_trylock(&kernel_flag)) {
- if (need_resched())
- return -EAGAIN;
- cpu_relax();
- }
- preempt_disable();
- return 0;
-}
-
-void __lockfunc __release_kernel_lock(void)
-{
- do_raw_spin_unlock(&kernel_flag);
- preempt_enable_no_resched();
-}
-
-/*
- * These are the BKL spinlocks - we try to be polite about preemption.
- * If SMP is not on (ie UP preemption), this all goes away because the
- * do_raw_spin_trylock() will always succeed.
- */
-#ifdef CONFIG_PREEMPT
-static inline void __lock_kernel(void)
-{
- preempt_disable();
- if (unlikely(!do_raw_spin_trylock(&kernel_flag))) {
- /*
- * If preemption was disabled even before this
- * was called, there's nothing we can be polite
- * about - just spin.
- */
- if (preempt_count() > 1) {
- do_raw_spin_lock(&kernel_flag);
- return;
- }
-
- /*
- * Otherwise, let's wait for the kernel lock
- * with preemption enabled..
- */
- do {
- preempt_enable();
- while (raw_spin_is_locked(&kernel_flag))
- cpu_relax();
- preempt_disable();
- } while (!do_raw_spin_trylock(&kernel_flag));
- }
-}
-
-#else
-
-/*
- * Non-preemption case - just get the spinlock
- */
-static inline void __lock_kernel(void)
-{
- do_raw_spin_lock(&kernel_flag);
-}
-#endif
-
-static inline void __unlock_kernel(void)
-{
- /*
- * the BKL is not covered by lockdep, so we open-code the
- * unlocking sequence (and thus avoid the dep-chain ops):
- */
- do_raw_spin_unlock(&kernel_flag);
- preempt_enable();
-}
-
-/*
- * Getting the big kernel lock.
- *
- * This cannot happen asynchronously, so we only need to
- * worry about other CPU's.
- */
-void __lockfunc _lock_kernel(const char *func, const char *file, int line)
-{
- int depth = current->lock_depth + 1;
-
- trace_lock_kernel(func, file, line);
-
- if (likely(!depth)) {
- might_sleep();
- __lock_kernel();
- }
- current->lock_depth = depth;
-}
-
-void __lockfunc _unlock_kernel(const char *func, const char *file, int line)
-{
- BUG_ON(current->lock_depth < 0);
- if (likely(--current->lock_depth < 0))
- __unlock_kernel();
-
- trace_unlock_kernel(func, file, line);
-}
-
-EXPORT_SYMBOL(_lock_kernel);
-EXPORT_SYMBOL(_unlock_kernel);
-
#include <linux/capability.h>
#include <linux/module.h>
#include <linux/if_arp.h>
-#include <linux/smp_lock.h>
#include <linux/termios.h> /* For TIOCOUTQ/INQ */
#include <linux/compat.h>
#include <linux/slab.h>
{
struct sock *sk = sock->sk;
- lock_kernel();
+ lock_sock(sk);
if (sk) {
sock_orphan(sk);
sock->sk = NULL;
atalk_destroy_socket(sk);
}
- unlock_kernel();
+ release_sock(sk);
return 0;
}
if (addr->sat_family != AF_APPLETALK)
return -EAFNOSUPPORT;
- lock_kernel();
+ lock_sock(sk);
if (addr->sat_addr.s_net == htons(ATADDR_ANYNET)) {
struct atalk_addr *ap = atalk_find_primary();
sock_reset_flag(sk, SOCK_ZAPPED);
err = 0;
out:
- unlock_kernel();
+ release_sock(sk);
return err;
}
#endif
}
- lock_kernel();
+ lock_sock(sk);
err = -EBUSY;
if (sock_flag(sk, SOCK_ZAPPED))
if (atalk_autobind(sk) < 0)
sk->sk_state = TCP_ESTABLISHED;
err = 0;
out:
- unlock_kernel();
+ release_sock(sk);
return err;
}
struct atalk_sock *at = at_sk(sk);
int err;
- lock_kernel();
+ lock_sock(sk);
err = -ENOBUFS;
if (sock_flag(sk, SOCK_ZAPPED))
if (atalk_autobind(sk) < 0)
memcpy(uaddr, &sat, sizeof(sat));
out:
- unlock_kernel();
- return err;
-}
-
-static unsigned int atalk_poll(struct file *file, struct socket *sock,
- poll_table *wait)
-{
- int err;
- lock_kernel();
- err = datagram_poll(file, sock, wait);
- unlock_kernel();
+ release_sock(sk);
return err;
}
if (len > DDP_MAXSZ)
return -EMSGSIZE;
- lock_kernel();
+ lock_sock(sk);
if (usat) {
err = -EBUSY;
if (sock_flag(sk, SOCK_ZAPPED))
sk, size, dev->name);
size += dev->hard_header_len;
+ release_sock(sk);
skb = sock_alloc_send_skb(sk, size, (flags & MSG_DONTWAIT), &err);
+ lock_sock(sk);
if (!skb)
goto out;
SOCK_DEBUG(sk, "SK %p: Done write (%Zd).\n", sk, len);
out:
- unlock_kernel();
+ release_sock(sk);
return err ? : len;
}
int err = 0;
struct sk_buff *skb;
- lock_kernel();
skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,
flags & MSG_DONTWAIT, &err);
+ lock_sock(sk);
+
if (!skb)
goto out;
skb_free_datagram(sk, skb); /* Free the datagram. */
out:
- unlock_kernel();
+ release_sock(sk);
return err ? : copied;
}
.socketpair = sock_no_socketpair,
.accept = sock_no_accept,
.getname = atalk_getname,
- .poll = atalk_poll,
+ .poll = datagram_poll,
.ioctl = atalk_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = atalk_compat_ioctl,
#
config IPX
tristate "The IPX protocol"
- depends on BKL # should be fixable
select LLC
---help---
This is support for the Novell networking protocol, IPX, commonly
#include <linux/uio.h>
#include <linux/slab.h>
#include <linux/skbuff.h>
-#include <linux/smp_lock.h>
#include <linux/socket.h>
#include <linux/sockios.h>
#include <linux/string.h>
int opt;
int rc = -EINVAL;
- lock_kernel();
+ lock_sock(sk);
if (optlen != sizeof(int))
goto out;
ipx_sk(sk)->type = opt;
rc = 0;
out:
- unlock_kernel();
+ release_sock(sk);
return rc;
}
int len;
int rc = -ENOPROTOOPT;
- lock_kernel();
+ lock_sock(sk);
if (!(level == SOL_IPX && optname == IPX_TYPE))
goto out;
rc = 0;
out:
- unlock_kernel();
+ release_sock(sk);
return rc;
}
if (!sk)
goto out;
- lock_kernel();
+ lock_sock(sk);
if (!sock_flag(sk, SOCK_DEAD))
sk->sk_state_change(sk);
sock->sk = NULL;
sk_refcnt_debug_release(sk);
ipx_destroy_socket(sk);
- unlock_kernel();
+ release_sock(sk);
out:
return 0;
}
static int ipx_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
{
+ struct sock *sk = sock->sk;
int rc;
- lock_kernel();
+ lock_sock(sk);
rc = __ipx_bind(sock, uaddr, addr_len);
- unlock_kernel();
+ release_sock(sk);
return rc;
}
sk->sk_state = TCP_CLOSE;
sock->state = SS_UNCONNECTED;
- lock_kernel();
+ lock_sock(sk);
if (addr_len != sizeof(*addr))
goto out;
addr = (struct sockaddr_ipx *)uaddr;
ipxrtr_put(rt);
rc = 0;
out:
- unlock_kernel();
+ release_sock(sk);
return rc;
}
*uaddr_len = sizeof(struct sockaddr_ipx);
- lock_kernel();
+ lock_sock(sk);
if (peer) {
rc = -ENOTCONN;
if (sk->sk_state != TCP_ESTABLISHED)
rc = 0;
out:
- unlock_kernel();
- return rc;
-}
-
-static unsigned int ipx_datagram_poll(struct file *file, struct socket *sock,
- poll_table *wait)
-{
- int rc;
-
- lock_kernel();
- rc = datagram_poll(file, sock, wait);
- unlock_kernel();
-
+ release_sock(sk);
return rc;
}
int rc = -EINVAL;
int flags = msg->msg_flags;
- lock_kernel();
+ lock_sock(sk);
/* Socket gets bound below anyway */
/* if (sk->sk_zapped)
return -EIO; */ /* Socket not bound */
if (rc >= 0)
rc = len;
out:
- unlock_kernel();
+ release_sock(sk);
return rc;
}
struct sk_buff *skb;
int copied, rc;
- lock_kernel();
+ lock_sock(sk);
/* put the autobinding in */
if (!ipxs->port) {
struct sockaddr_ipx uaddr;
out_free:
skb_free_datagram(sk, skb);
out:
- unlock_kernel();
+ release_sock(sk);
return rc;
}
struct sock *sk = sock->sk;
void __user *argp = (void __user *)arg;
- lock_kernel();
+ lock_sock(sk);
switch (cmd) {
case TIOCOUTQ:
amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk);
rc = -ENOIOCTLCMD;
break;
}
- unlock_kernel();
+ release_sock(sk);
return rc;
}
.socketpair = sock_no_socketpair,
.accept = sock_no_accept,
.getname = ipx_getname,
- .poll = ipx_datagram_poll,
+ .poll = datagram_poll,
.ioctl = ipx_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = ipx_compat_ioctl,
config X25
tristate "CCITT X.25 Packet Layer (EXPERIMENTAL)"
depends on EXPERIMENTAL
- depends on BKL # should be fixable
---help---
X.25 is a set of standardized network protocols, similar in scope to
frame relay; the one physical line from your box to the X.25 network
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/sched.h>
-#include <linux/smp_lock.h>
#include <linux/timer.h>
#include <linux/string.h>
#include <linux/net.h>
sock_put(sk);
}
-static void x25_destroy_socket(struct sock *sk)
-{
- sock_hold(sk);
- lock_sock(sk);
- __x25_destroy_socket(sk);
- release_sock(sk);
- sock_put(sk);
-}
-
/*
* Handling for system calls applied via the various interfaces to a
* X.25 socket object.
struct sock *sk = sock->sk;
struct x25_sock *x25;
- lock_kernel();
if (!sk)
- goto out;
+ return 0;
x25 = x25_sk(sk);
+ sock_hold(sk);
+ lock_sock(sk);
switch (x25->state) {
case X25_STATE_0:
case X25_STATE_2:
x25_disconnect(sk, 0, 0, 0);
- x25_destroy_socket(sk);
+ __x25_destroy_socket(sk);
goto out;
case X25_STATE_1:
sock_orphan(sk);
out:
- unlock_kernel();
+ release_sock(sk);
+ sock_put(sk);
return 0;
}
size_t size;
int qbit = 0, rc = -EINVAL;
- lock_kernel();
+ lock_sock(sk);
if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_OOB|MSG_EOR|MSG_CMSG_COMPAT))
goto out;
size = len + X25_MAX_L2_LEN + X25_EXT_MIN_LEN;
+ release_sock(sk);
skb = sock_alloc_send_skb(sk, size, noblock, &rc);
+ lock_sock(sk);
if (!skb)
goto out;
X25_SKB_CB(skb)->flags = msg->msg_flags;
len++;
}
- /*
- * lock_sock() is currently only used to serialize this x25_kick()
- * against input-driven x25_kick() calls. It currently only blocks
- * incoming packets for this socket and does not protect against
- * any other socket state changes and is not called from anywhere
- * else. As x25_kick() cannot block and as long as all socket
- * operations are BKL-wrapped, we don't need take to care about
- * purging the backlog queue in x25_release().
- *
- * Using lock_sock() to protect all socket operations entirely
- * (and making the whole x25 stack SMP aware) unfortunately would
- * require major changes to {send,recv}msg and skb allocation methods.
- * -> 2.5 ;)
- */
- lock_sock(sk);
x25_kick(sk);
- release_sock(sk);
rc = len;
out:
- unlock_kernel();
+ release_sock(sk);
return rc;
out_kfree_skb:
kfree_skb(skb);
unsigned char *asmptr;
int rc = -ENOTCONN;
- lock_kernel();
+ lock_sock(sk);
/*
* This works for seqpacket too. The receiver has ordered the queue for
* us! We do one quick check first though
msg->msg_flags |= MSG_OOB;
} else {
/* Now we can treat all alike */
+ release_sock(sk);
skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,
flags & MSG_DONTWAIT, &rc);
+ lock_sock(sk);
if (!skb)
goto out;
msg->msg_namelen = sizeof(struct sockaddr_x25);
- lock_sock(sk);
x25_check_rbuf(sk);
- release_sock(sk);
rc = copied;
out_free_dgram:
skb_free_datagram(sk, skb);
out:
- unlock_kernel();
+ release_sock(sk);
return rc;
}
case SIOCX25CALLACCPTAPPRV: {
rc = -EINVAL;
- lock_kernel();
+ lock_sock(sk);
if (sk->sk_state != TCP_CLOSE)
break;
clear_bit(X25_ACCPT_APPRV_FLAG, &x25->flags);
- unlock_kernel();
+ release_sock(sk);
rc = 0;
break;
}
case SIOCX25SENDCALLACCPT: {
rc = -EINVAL;
- lock_kernel();
+ lock_sock(sk);
if (sk->sk_state != TCP_ESTABLISHED)
break;
/* must call accptapprv above */
break;
x25_write_internal(sk, X25_CALL_ACCEPTED);
x25->state = X25_STATE_3;
- unlock_kernel();
+ release_sock(sk);
rc = 0;
break;
}
frontlen = skb_headroom(skb);
while (skb->len > 0) {
- if ((skbn = sock_alloc_send_skb(sk, frontlen + max_len,
- noblock, &err)) == NULL){
+ release_sock(sk);
+ skbn = sock_alloc_send_skb(sk, frontlen + max_len,
+ noblock, &err);
+ lock_sock(sk);
+ if (!skbn) {
if (err == -EWOULDBLOCK && noblock){
kfree_skb(skb);
return sent;
projects / linux-flexiantxendom0.git / commitdiff