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alistair23-linux
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Merge branch 'master' into upstream

hifive-unleashed-5.1
Jeff Garzik 2006-04-27 04:52:44 -04:00
parent 9f1da23b63 2be4d50295
commit 1a2e8a6f8e
51 changed files with 450 additions and 226 deletions
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5
Documentation/filesystems/sysfs.txt
View File

@ -246,6 +246,7 @@ class/
devices/
firmware/
net/
fs/
devices/ contains a filesystem representation of the device tree. It maps
directly to the internal kernel device tree, which is a hierarchy of
@ -264,6 +265,10 @@ drivers/ contains a directory for each device driver that is loaded
for devices on that particular bus (this assumes that drivers do not
span multiple bus types).
fs/ contains a directory for some filesystems. Currently each
filesystem wanting to export attributes must create its own hierarchy
below fs/ (see ./fuse.txt for an example).
More information can driver-model specific features can be found in
Documentation/driver-model/.

2
Makefile
View File

@ -1,7 +1,7 @@
VERSION = 2
PATCHLEVEL = 6
SUBLEVEL = 17
EXTRAVERSION =-rc2
EXTRAVERSION =-rc3
NAME=Sliding Snow Leopard
# *DOCUMENTATION*

2
arch/arm/Makefile
View File

@ -66,7 +66,7 @@ tune-$(CONFIG_CPU_XSC3) :=$(call cc-option,-mtune=xscale,-mtune=strongarm110) -
tune-$(CONFIG_CPU_V6) :=$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
ifeq ($(CONFIG_AEABI),y)
CFLAGS_ABI :=-mabi=aapcs -mno-thumb-interwork
CFLAGS_ABI :=-mabi=aapcs-linux -mno-thumb-interwork
else
CFLAGS_ABI :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
endif

2
arch/arm/kernel/Makefile
View File

@ -29,7 +29,7 @@ ifneq ($(CONFIG_ARCH_EBSA110),y)
obj-y += io.o
endif
head-y := head.o
head-y := head$(MMUEXT).o
obj-$(CONFIG_DEBUG_LL) += debug.o
extra-y := $(head-y) init_task.o vmlinux.lds

4
arch/arm/kernel/head-nommu.S
View File

@ -20,10 +20,11 @@
#include <asm/mach-types.h>
#include <asm/procinfo.h>
#include <asm/ptrace.h>
#include <asm/constants.h>
#include <asm/thread_info.h>
#include <asm/system.h>
#define PROCINFO_INITFUNC 12
#define MACHINFO_TYPE 0
/*
* Kernel startup entry point.
@ -79,5 +80,6 @@ __after_proc_init:
mov pc, r13 @ clear the BSS and jump
@ to start_kernel
.ltorg
#include "head-common.S"

2
arch/arm/vfp/vfpdouble.c
View File

@ -197,7 +197,7 @@ u32 vfp_double_normaliseround(int dd, struct vfp_double *vd, u32 fpscr, u32 exce
dd, d, exceptions);
vfp_put_double(dd, d);
}
return exceptions & ~VFP_NAN_FLAG;
return exceptions;
}
/*

2
arch/arm/vfp/vfpmodule.c
View File

@ -180,7 +180,7 @@ static u32 vfp_emulate_instruction(u32 inst, u32 fpscr, struct pt_regs *regs)
* emulate it.
*/
}
return exceptions;
return exceptions & ~VFP_NAN_FLAG;
}
/*

2
arch/arm/vfp/vfpsingle.c
View File

@ -203,7 +203,7 @@ u32 vfp_single_normaliseround(int sd, struct vfp_single *vs, u32 fpscr, u32 exce
vfp_put_float(sd, d);
}
return exceptions & ~VFP_NAN_FLAG;
return exceptions;
}
/*

2
arch/i386/kernel/cpu/intel_cacheinfo.c
View File

@ -642,7 +642,7 @@ static void __cpuexit cache_remove_dev(struct sys_device * sys_dev)
return;
}
static int __cpuinit cacheinfo_cpu_callback(struct notifier_block *nfb,
static int cacheinfo_cpu_callback(struct notifier_block *nfb,
unsigned long action, void *hcpu)
{
unsigned int cpu = (unsigned long)hcpu;

1
arch/ia64/kernel/entry.S
View File

@ -1610,5 +1610,6 @@ sys_call_table:
data8 sys_get_robust_list
data8 sys_sync_file_range // 1300
data8 sys_tee
data8 sys_vmsplice
.org sys_call_table + 8*NR_syscalls // guard against failures to increase NR_syscalls

2
arch/ia64/kernel/palinfo.c
View File

@ -959,7 +959,7 @@ remove_palinfo_proc_entries(unsigned int hcpu)
}
}
static int __devinit palinfo_cpu_callback(struct notifier_block *nfb,
static int palinfo_cpu_callback(struct notifier_block *nfb,
unsigned long action,
void *hcpu)
{

2
arch/ia64/kernel/salinfo.c
View File

@ -572,7 +572,7 @@ static struct file_operations salinfo_data_fops = {
};
#ifdef CONFIG_HOTPLUG_CPU
static int __devinit
static int
salinfo_cpu_callback(struct notifier_block *nb, unsigned long action, void *hcpu)
{
unsigned int i, cpu = (unsigned long)hcpu;

2
arch/ia64/kernel/topology.c
View File

@ -429,7 +429,7 @@ static int __cpuinit cache_remove_dev(struct sys_device * sys_dev)
* When a cpu is hot-plugged, do a check and initiate
* cache kobject if necessary
*/
static int __cpuinit cache_cpu_callback(struct notifier_block *nfb,
static int cache_cpu_callback(struct notifier_block *nfb,
unsigned long action, void *hcpu)
{
unsigned int cpu = (unsigned long)hcpu;

64
arch/mips/kernel/linux32.c
View File

@ -356,73 +356,13 @@ asmlinkage int sys32_llseek(unsigned int fd, unsigned int offset_high,
asmlinkage ssize_t sys32_pread(unsigned int fd, char __user * buf,
size_t count, u32 unused, u64 a4, u64 a5)
{
ssize_t ret;
struct file * file;
ssize_t (*read)(struct file *, char __user *, size_t, loff_t *);
loff_t pos;
ret = -EBADF;
file = fget(fd);
if (!file)
goto bad_file;
if (!(file->f_mode & FMODE_READ))
goto out;
pos = merge_64(a4, a5);
ret = rw_verify_area(READ, file, &pos, count);
if (ret < 0)
goto out;
ret = -EINVAL;
if (!file->f_op || !(read = file->f_op->read))
goto out;
if (pos < 0)
goto out;
ret = -ESPIPE;
if (!(file->f_mode & FMODE_PREAD))
goto out;
ret = read(file, buf, count, &pos);
if (ret > 0)
dnotify_parent(file->f_dentry, DN_ACCESS);
out:
fput(file);
bad_file:
return ret;
return sys_pread64(fd, buf, count, merge_64(a4, a5));
}
asmlinkage ssize_t sys32_pwrite(unsigned int fd, const char __user * buf,
size_t count, u32 unused, u64 a4, u64 a5)
{
ssize_t ret;
struct file * file;
ssize_t (*write)(struct file *, const char __user *, size_t, loff_t *);
loff_t pos;
ret = -EBADF;
file = fget(fd);
if (!file)
goto bad_file;
if (!(file->f_mode & FMODE_WRITE))
goto out;
pos = merge_64(a4, a5);
ret = rw_verify_area(WRITE, file, &pos, count);
if (ret < 0)
goto out;
ret = -EINVAL;
if (!file->f_op || !(write = file->f_op->write))
goto out;
if (pos < 0)
goto out;
ret = -ESPIPE;
if (!(file->f_mode & FMODE_PWRITE))
goto out;
ret = write(file, buf, count, &pos);
if (ret > 0)
dnotify_parent(file->f_dentry, DN_MODIFY);
out:
fput(file);
bad_file:
return ret;
return sys_pwrite64(fd, buf, count, merge_64(a4, a5));
}
asmlinkage int sys32_sched_rr_get_interval(compat_pid_t pid,

4
arch/powerpc/kernel/sysfs.c
View File

@ -279,7 +279,7 @@ static void unregister_cpu_online(unsigned int cpu)
}
#endif /* CONFIG_HOTPLUG_CPU */
static int __devinit sysfs_cpu_notify(struct notifier_block *self,
static int sysfs_cpu_notify(struct notifier_block *self,
unsigned long action, void *hcpu)
{
unsigned int cpu = (unsigned int)(long)hcpu;
@ -297,7 +297,7 @@ static int __devinit sysfs_cpu_notify(struct notifier_block *self,
return NOTIFY_OK;
}
static struct notifier_block __devinitdata sysfs_cpu_nb = {
static struct notifier_block sysfs_cpu_nb = {
.notifier_call = sysfs_cpu_notify,
};

1
arch/powerpc/kernel/systbl.S
View File

@ -324,6 +324,7 @@ COMPAT_SYS(ppoll)
SYSCALL(unshare)
SYSCALL(splice)
SYSCALL(tee)
SYSCALL(vmsplice)
/*
* please add new calls to arch/powerpc/platforms/cell/spu_callbacks.c

1
arch/powerpc/platforms/cell/spu_callbacks.c
View File

@ -318,6 +318,7 @@ void *spu_syscall_table[] = {
[__NR_unshare] sys_unshare,
[__NR_splice] sys_splice,
[__NR_tee] sys_tee,
[__NR_vmsplice] sys_vmsplice,
};
long spu_sys_callback(struct spu_syscall_block *s)

2
arch/s390/appldata/appldata_base.c
View File

@ -652,7 +652,7 @@ appldata_cpu_notify(struct notifier_block *self,
return NOTIFY_OK;
}
static struct notifier_block __devinitdata appldata_nb = {
static struct notifier_block appldata_nb = {
.notifier_call = appldata_cpu_notify,
};

2
arch/x86_64/kernel/mce.c
View File

@ -629,7 +629,7 @@ static __cpuinit void mce_remove_device(unsigned int cpu)
#endif
/* Get notified when a cpu comes on/off. Be hotplug friendly. */
static __cpuinit int
static int
mce_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
{
unsigned int cpu = (unsigned long)hcpu;

2
arch/x86_64/kernel/mce_amd.c
View File

@ -482,7 +482,7 @@ static void threshold_remove_device(unsigned int cpu)
#endif
/* get notified when a cpu comes on/off */
static __cpuinit int threshold_cpu_callback(struct notifier_block *nfb,
static int threshold_cpu_callback(struct notifier_block *nfb,
unsigned long action, void *hcpu)
{
/* cpu was unsigned int to begin with */

2
block/ll_rw_blk.c
View File

@ -3385,7 +3385,7 @@ static int blk_cpu_notify(struct notifier_block *self, unsigned long action,
}
static struct notifier_block __devinitdata blk_cpu_notifier = {
static struct notifier_block blk_cpu_notifier = {
.notifier_call = blk_cpu_notify,
};

2
drivers/base/topology.c
View File

@ -107,7 +107,7 @@ static int __cpuinit topology_remove_dev(struct sys_device * sys_dev)
return 0;
}
static int __cpuinit topology_cpu_callback(struct notifier_block *nfb,
static int topology_cpu_callback(struct notifier_block *nfb,
unsigned long action, void *hcpu)
{
unsigned int cpu = (unsigned long)hcpu;

14
drivers/char/mem.c
View File

@ -27,6 +27,7 @@
#include <linux/crash_dump.h>
#include <linux/backing-dev.h>
#include <linux/bootmem.h>
#include <linux/pipe_fs_i.h>
#include <asm/uaccess.h>
#include <asm/io.h>
@ -578,6 +579,18 @@ static ssize_t write_null(struct file * file, const char __user * buf,
return count;
}
static int pipe_to_null(struct pipe_inode_info *info, struct pipe_buffer *buf,
struct splice_desc *sd)
{
return sd->len;
}
static ssize_t splice_write_null(struct pipe_inode_info *pipe,struct file *out,
loff_t *ppos, size_t len, unsigned int flags)
{
return splice_from_pipe(pipe, out, ppos, len, flags, pipe_to_null);
}
#ifdef CONFIG_MMU
/*
* For fun, we are using the MMU for this.
@ -785,6 +798,7 @@ static struct file_operations null_fops = {
.llseek = null_lseek,
.read = read_null,
.write = write_null,
.splice_write = splice_write_null,
};
#if defined(CONFIG_ISA) || !defined(__mc68000__)

2
drivers/cpufreq/cpufreq.c
View File

@ -1497,7 +1497,7 @@ int cpufreq_update_policy(unsigned int cpu)
}
EXPORT_SYMBOL(cpufreq_update_policy);
static int __cpuinit cpufreq_cpu_callback(struct notifier_block *nfb,
static int cpufreq_cpu_callback(struct notifier_block *nfb,
unsigned long action, void *hcpu)
{
unsigned int cpu = (unsigned long)hcpu;

10
drivers/mmc/pxamci.c
View File

@ -65,11 +65,6 @@ struct pxamci_host {
unsigned int dma_dir;
};
static inline unsigned int ns_to_clocks(unsigned int ns)
{
return (ns * (CLOCKRATE / 1000000) + 999) / 1000;
}
static void pxamci_stop_clock(struct pxamci_host *host)
{
if (readl(host->base + MMC_STAT) & STAT_CLK_EN) {
@ -113,6 +108,7 @@ static void pxamci_disable_irq(struct pxamci_host *host, unsigned int mask)
static void pxamci_setup_data(struct pxamci_host *host, struct mmc_data *data)
{
unsigned int nob = data->blocks;
unsigned long long clks;
unsigned int timeout;
u32 dcmd;
int i;
@ -125,7 +121,9 @@ static void pxamci_setup_data(struct pxamci_host *host, struct mmc_data *data)
writel(nob, host->base + MMC_NOB);
writel(1 << data->blksz_bits, host->base + MMC_BLKLEN);
timeout = ns_to_clocks(data->timeout_ns) + data->timeout_clks;
clks = (unsigned long long)data->timeout_ns * CLOCKRATE;
do_div(clks, 1000000000UL);
timeout = (unsigned int)clks + (data->timeout_clks << host->clkrt);
writel((timeout + 255) / 256, host->base + MMC_RDTO);
if (data->flags & MMC_DATA_READ) {

1
drivers/usb/gadget/inode.c
View File

@ -1614,6 +1614,7 @@ static int activate_ep_files (struct dev_data *dev)
data, &ep_config_operations,
&data->dentry);
if (!data->inode) {
usb_ep_free_request(ep, data->req);
kfree (data);
goto enomem;
}

4
fs/compat.c
View File

@ -1217,6 +1217,10 @@ static ssize_t compat_do_readv_writev(int type, struct file *file,
if (ret < 0)
goto out;
ret = security_file_permission(file, type == READ ? MAY_READ:MAY_WRITE);
if (ret)
goto out;
fnv = NULL;
if (type == READ) {
fn = file->f_op->read;

18
fs/ext3/ioctl.c
View File

@ -48,6 +48,7 @@ int ext3_ioctl (struct inode * inode, struct file * filp, unsigned int cmd,
if (!S_ISDIR(inode->i_mode))
flags &= ~EXT3_DIRSYNC_FL;
mutex_lock(&inode->i_mutex);
oldflags = ei->i_flags;
/* The JOURNAL_DATA flag is modifiable only by root */
@ -60,8 +61,10 @@ int ext3_ioctl (struct inode * inode, struct file * filp, unsigned int cmd,
* This test looks nicer. Thanks to Pauline Middelink
*/
if ((flags ^ oldflags) & (EXT3_APPEND_FL | EXT3_IMMUTABLE_FL)) {
if (!capable(CAP_LINUX_IMMUTABLE))
if (!capable(CAP_LINUX_IMMUTABLE)) {
mutex_unlock(&inode->i_mutex);
return -EPERM;
}
}
/*
@ -69,14 +72,18 @@ int ext3_ioctl (struct inode * inode, struct file * filp, unsigned int cmd,
* the relevant capability.
*/
if ((jflag ^ oldflags) & (EXT3_JOURNAL_DATA_FL)) {
if (!capable(CAP_SYS_RESOURCE))
if (!capable(CAP_SYS_RESOURCE)) {
mutex_unlock(&inode->i_mutex);
return -EPERM;
}
}
handle = ext3_journal_start(inode, 1);
if (IS_ERR(handle))
if (IS_ERR(handle)) {
mutex_unlock(&inode->i_mutex);
return PTR_ERR(handle);
}
if (IS_SYNC(inode))
handle->h_sync = 1;
err = ext3_reserve_inode_write(handle, inode, &iloc);
@ -93,11 +100,14 @@ int ext3_ioctl (struct inode * inode, struct file * filp, unsigned int cmd,
err = ext3_mark_iloc_dirty(handle, inode, &iloc);
flags_err:
ext3_journal_stop(handle);
if (err)
if (err) {
mutex_unlock(&inode->i_mutex);
return err;
}
if ((jflag ^ oldflags) & (EXT3_JOURNAL_DATA_FL))
err = ext3_change_inode_journal_flag(inode, jflag);
mutex_unlock(&inode->i_mutex);
return err;
}
case EXT3_IOC_GETVERSION:

2
fs/ext3/resize.c
View File

@ -213,7 +213,7 @@ static int setup_new_group_blocks(struct super_block *sb,
goto exit_bh;
}
lock_buffer(bh);
memcpy(gdb->b_data, sbi->s_group_desc[i], bh->b_size);
memcpy(gdb->b_data, sbi->s_group_desc[i]->b_data, bh->b_size);
set_buffer_uptodate(gdb);
unlock_buffer(bh);
ext3_journal_dirty_metadata(handle, gdb);

35
fs/fuse/dev.c
View File

@ -128,14 +128,24 @@ void fuse_put_request(struct fuse_conn *fc, struct fuse_req *req)
}
}
void fuse_remove_background(struct fuse_conn *fc, struct fuse_req *req)
/*
* Called with sbput_sem held for read (request_end) or write
* (fuse_put_super). By the time fuse_put_super() is finished, all
* inodes belonging to background requests must be released, so the
* iputs have to be done within the locked region.
*/
void fuse_release_background(struct fuse_conn *fc, struct fuse_req *req)
{
list_del_init(&req->bg_entry);
iput(req->inode);
iput(req->inode2);
spin_lock(&fc->lock);
list_del(&req->bg_entry);
if (fc->num_background == FUSE_MAX_BACKGROUND) {
fc->blocked = 0;
wake_up_all(&fc->blocked_waitq);
}
fc->num_background--;
spin_unlock(&fc->lock);
}
/*
@ -165,27 +175,22 @@ static void request_end(struct fuse_conn *fc, struct fuse_req *req)
wake_up(&req->waitq);
fuse_put_request(fc, req);
} else {
struct inode *inode = req->inode;
struct inode *inode2 = req->inode2;
struct file *file = req->file;
void (*end) (struct fuse_conn *, struct fuse_req *) = req->end;
req->end = NULL;
req->inode = NULL;
req->inode2 = NULL;
req->file = NULL;
if (!list_empty(&req->bg_entry))
fuse_remove_background(fc, req);
spin_unlock(&fc->lock);
down_read(&fc->sbput_sem);
if (fc->mounted)
fuse_release_background(fc, req);
up_read(&fc->sbput_sem);
/* fput must go outside sbput_sem, otherwise it can deadlock */
if (req->file)
fput(req->file);
if (end)
end(fc, req);
else
fuse_put_request(fc, req);
if (file)
fput(file);
iput(inode);
iput(inode2);
}
}

12
fs/fuse/fuse_i.h
View File

@ -258,9 +258,15 @@ struct fuse_conn {
/** waitq for blocked connection */
wait_queue_head_t blocked_waitq;
/** RW semaphore for exclusion with fuse_put_super() */
struct rw_semaphore sbput_sem;
/** The next unique request id */
u64 reqctr;
/** Mount is active */
unsigned mounted;
/** Connection established, cleared on umount, connection
abort and device release */
unsigned connected;
@ -471,11 +477,11 @@ void request_send_noreply(struct fuse_conn *fc, struct fuse_req *req);
void request_send_background(struct fuse_conn *fc, struct fuse_req *req);
/**
* Remove request from the the background list
* Release inodes and file associated with background request
*/
void fuse_remove_background(struct fuse_conn *fc, struct fuse_req *req);
void fuse_release_background(struct fuse_conn *fc, struct fuse_req *req);
/** Abort all requests */
/* Abort all requests */
void fuse_abort_conn(struct fuse_conn *fc);
/**

40
fs/fuse/inode.c
View File

@ -204,26 +204,17 @@ static void fuse_put_super(struct super_block *sb)
{
struct fuse_conn *fc = get_fuse_conn_super(sb);
down_write(&fc->sbput_sem);
while (!list_empty(&fc->background))
fuse_release_background(fc,
list_entry(fc->background.next,
struct fuse_req, bg_entry));
spin_lock(&fc->lock);
fc->mounted = 0;
fc->connected = 0;
while (!list_empty(&fc->background)) {
struct fuse_req *req = list_entry(fc->background.next,
struct fuse_req, bg_entry);
struct inode *inode = req->inode;
struct inode *inode2 = req->inode2;
/* File would hold a reference to vfsmount */
BUG_ON(req->file);
req->inode = NULL;
req->inode2 = NULL;
fuse_remove_background(fc, req);
spin_unlock(&fc->lock);
iput(inode);
iput(inode2);
spin_lock(&fc->lock);
}
spin_unlock(&fc->lock);
up_write(&fc->sbput_sem);
/* Flush all readers on this fs */
kill_fasync(&fc->fasync, SIGIO, POLL_IN);
wake_up_all(&fc->waitq);
@ -395,6 +386,7 @@ static struct fuse_conn *new_conn(void)
INIT_LIST_HEAD(&fc->processing);
INIT_LIST_HEAD(&fc->io);
INIT_LIST_HEAD(&fc->background);
init_rwsem(&fc->sbput_sem);
kobj_set_kset_s(fc, connections_subsys);
kobject_init(&fc->kobj);
atomic_set(&fc->num_waiting, 0);
@ -508,11 +500,6 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent)
if (file->f_op != &fuse_dev_operations)
return -EINVAL;
/* Setting file->private_data can't race with other mount()
instances, since BKL is held for ->get_sb() */
if (file->private_data)
return -EINVAL;
fc = new_conn();
if (!fc)
return -ENOMEM;
@ -548,7 +535,14 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent)
if (err)
goto err_free_req;
/* Setting file->private_data can't race with other mount()
instances, since BKL is held for ->get_sb() */
err = -EINVAL;
if (file->private_data)
goto err_kobject_del;
sb->s_root = root_dentry;
fc->mounted = 1;
fc->connected = 1;
kobject_get(&fc->kobj);
file->private_data = fc;
@ -563,6 +557,8 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent)
return 0;
err_kobject_del:
kobject_del(&fc->kobj);
err_free_req:
fuse_request_free(init_req);
err_put_root:

355
fs/splice.c
View File

@ -27,15 +27,22 @@
#include <linux/buffer_head.h>
#include <linux/module.h>
#include <linux/syscalls.h>
#include <linux/uio.h>
struct partial_page {
unsigned int offset;
unsigned int len;
};
/*
* Passed to the actors
* Passed to splice_to_pipe
*/
struct splice_desc {
unsigned int len, total_len; /* current and remaining length */
struct splice_pipe_desc {
struct page **pages; /* page map */
struct partial_page *partial; /* pages[] may not be contig */
int nr_pages; /* number of pages in map */
unsigned int flags; /* splice flags */
struct file *file; /* file to read/write */
loff_t pos; /* file position */
struct pipe_buf_operations *ops;/* ops associated with output pipe */
};
/*
@ -128,6 +135,19 @@ static void page_cache_pipe_buf_unmap(struct pipe_inode_info *info,
kunmap(buf->page);
}
static void *user_page_pipe_buf_map(struct file *file,
struct pipe_inode_info *pipe,
struct pipe_buffer *buf)
{
return kmap(buf->page);
}
static void user_page_pipe_buf_unmap(struct pipe_inode_info *pipe,
struct pipe_buffer *buf)
{
kunmap(buf->page);
}
static void page_cache_pipe_buf_get(struct pipe_inode_info *info,
struct pipe_buffer *buf)
{
@ -143,19 +163,33 @@ static struct pipe_buf_operations page_cache_pipe_buf_ops = {
.get = page_cache_pipe_buf_get,
};
static int user_page_pipe_buf_steal(struct pipe_inode_info *pipe,
struct pipe_buffer *buf)
{
return 1;
}
static struct pipe_buf_operations user_page_pipe_buf_ops = {
.can_merge = 0,
.map = user_page_pipe_buf_map,
.unmap = user_page_pipe_buf_unmap,
.release = page_cache_pipe_buf_release,
.steal = user_page_pipe_buf_steal,
.get = page_cache_pipe_buf_get,
};
/*
* Pipe output worker. This sets up our pipe format with the page cache
* pipe buffer operations. Otherwise very similar to the regular pipe_writev().
*/
static ssize_t move_to_pipe(struct pipe_inode_info *pipe, struct page **pages,
int nr_pages, unsigned long len,
unsigned int offset, unsigned int flags)
static ssize_t splice_to_pipe(struct pipe_inode_info *pipe,
struct splice_pipe_desc *spd)
{
int ret, do_wakeup, i;
int ret, do_wakeup, page_nr;
ret = 0;
do_wakeup = 0;
i = 0;
page_nr = 0;
if (pipe->inode)
mutex_lock(&pipe->inode->i_mutex);
@ -171,27 +205,19 @@ static ssize_t move_to_pipe(struct pipe_inode_info *pipe, struct page **pages,
if (pipe->nrbufs < PIPE_BUFFERS) {
int newbuf = (pipe->curbuf + pipe->nrbufs) & (PIPE_BUFFERS - 1);
struct pipe_buffer *buf = pipe->bufs + newbuf;
struct page *page = pages[i++];
unsigned long this_len;
this_len = PAGE_CACHE_SIZE - offset;
if (this_len > len)
this_len = len;
buf->page = page;
buf->offset = offset;
buf->len = this_len;
buf->ops = &page_cache_pipe_buf_ops;
buf->page = spd->pages[page_nr];
buf->offset = spd->partial[page_nr].offset;
buf->len = spd->partial[page_nr].len;
buf->ops = spd->ops;
pipe->nrbufs++;
page_nr++;
ret += buf->len;
if (pipe->inode)
do_wakeup = 1;
ret += this_len;
len -= this_len;
offset = 0;
if (!--nr_pages)
break;
if (!len)
if (!--spd->nr_pages)
break;
if (pipe->nrbufs < PIPE_BUFFERS)
continue;
@ -199,7 +225,7 @@ static ssize_t move_to_pipe(struct pipe_inode_info *pipe, struct page **pages,
break;
}
if (flags & SPLICE_F_NONBLOCK) {
if (spd->flags & SPLICE_F_NONBLOCK) {
if (!ret)
ret = -EAGAIN;
break;
@ -234,8 +260,8 @@ static ssize_t move_to_pipe(struct pipe_inode_info *pipe, struct page **pages,
kill_fasync(&pipe->fasync_readers, SIGIO, POLL_IN);
}
while (i < nr_pages)
page_cache_release(pages[i++]);
while (page_nr < spd->nr_pages)
page_cache_release(spd->pages[page_nr++]);
return ret;
}
@ -246,17 +272,24 @@ __generic_file_splice_read(struct file *in, loff_t *ppos,
unsigned int flags)
{
struct address_space *mapping = in->f_mapping;
unsigned int loff, offset, nr_pages;
unsigned int loff, nr_pages;
struct page *pages[PIPE_BUFFERS];
struct partial_page partial[PIPE_BUFFERS];
struct page *page;
pgoff_t index, end_index;
loff_t isize;
size_t bytes;
int i, error;
size_t total_len;
int error;
struct splice_pipe_desc spd = {
.pages = pages,
.partial = partial,
.flags = flags,
.ops = &page_cache_pipe_buf_ops,
};
index = *ppos >> PAGE_CACHE_SHIFT;
loff = offset = *ppos & ~PAGE_CACHE_MASK;
nr_pages = (len + offset + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
loff = *ppos & ~PAGE_CACHE_MASK;
nr_pages = (len + loff + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
if (nr_pages > PIPE_BUFFERS)
nr_pages = PIPE_BUFFERS;
@ -266,15 +299,15 @@ __generic_file_splice_read(struct file *in, loff_t *ppos,
* read-ahead if this is a non-zero offset (we are likely doing small
* chunk splice and the page is already there) for a single page.
*/
if (!offset || nr_pages > 1)
do_page_cache_readahead(mapping, in, index, nr_pages);
if (!loff || spd.nr_pages > 1)
do_page_cache_readahead(mapping, in, index, spd.nr_pages);
/*
* Now fill in the holes:
*/
error = 0;
bytes = 0;
for (i = 0; i < nr_pages; i++, index++) {
total_len = 0;
for (spd.nr_pages = 0; spd.nr_pages < nr_pages; spd.nr_pages++, index++) {
unsigned int this_len;
if (!len)
@ -283,7 +316,7 @@ __generic_file_splice_read(struct file *in, loff_t *ppos,
/*
* this_len is the max we'll use from this page
*/
this_len = min(len, PAGE_CACHE_SIZE - loff);
this_len = min_t(unsigned long, len, PAGE_CACHE_SIZE - loff);
find_page:
/*
* lookup the page for this index
@ -367,26 +400,29 @@ readpage:
*/
if (end_index == index) {
loff = PAGE_CACHE_SIZE - (isize & ~PAGE_CACHE_MASK);
if (bytes + loff > isize) {
if (total_len + loff > isize) {
page_cache_release(page);
break;
}
/*
* force quit after adding this page
*/
nr_pages = i;
nr_pages = spd.nr_pages;
this_len = min(this_len, loff);
loff = 0;
}
}
fill_it:
pages[i] = page;
bytes += this_len;
pages[spd.nr_pages] = page;
partial[spd.nr_pages].offset = loff;
partial[spd.nr_pages].len = this_len;
len -= this_len;
total_len += this_len;
loff = 0;
}
if (i)
return move_to_pipe(pipe, pages, i, bytes, offset, flags);
if (spd.nr_pages)
return splice_to_pipe(pipe, &spd);
return error;
}
@ -439,14 +475,13 @@ EXPORT_SYMBOL(generic_file_splice_read);
/*
* Send 'sd->len' bytes to socket from 'sd->file' at position 'sd->pos'
* using sendpage().
* using sendpage(). Return the number of bytes sent.
*/
static int pipe_to_sendpage(struct pipe_inode_info *info,
struct pipe_buffer *buf, struct splice_desc *sd)
{
struct file *file = sd->file;
loff_t pos = sd->pos;
unsigned int offset;
ssize_t ret;
void *ptr;
int more;
@ -461,16 +496,13 @@ static int pipe_to_sendpage(struct pipe_inode_info *info,
if (IS_ERR(ptr))
return PTR_ERR(ptr);
offset = pos & ~PAGE_CACHE_MASK;
more = (sd->flags & SPLICE_F_MORE) || sd->len < sd->total_len;
ret = file->f_op->sendpage(file, buf->page, offset, sd->len, &pos,more);
ret = file->f_op->sendpage(file, buf->page, buf->offset, sd->len,
&pos, more);
buf->ops->unmap(info, buf);
if (ret == sd->len)
return 0;
return -EIO;
return ret;
}
/*
@ -499,7 +531,7 @@ static int pipe_to_file(struct pipe_inode_info *info, struct pipe_buffer *buf,
struct file *file = sd->file;
struct address_space *mapping = file->f_mapping;
gfp_t gfp_mask = mapping_gfp_mask(mapping);
unsigned int offset;
unsigned int offset, this_len;
struct page *page;
pgoff_t index;
char *src;
@ -515,6 +547,10 @@ static int pipe_to_file(struct pipe_inode_info *info, struct pipe_buffer *buf,
index = sd->pos >> PAGE_CACHE_SHIFT;
offset = sd->pos & ~PAGE_CACHE_MASK;
this_len = sd->len;
if (this_len + offset > PAGE_CACHE_SIZE)
this_len = PAGE_CACHE_SIZE - offset;
/*
* Reuse buf page, if SPLICE_F_MOVE is set.
*/
@ -558,7 +594,7 @@ find_page:
* the full page.
*/
if (!PageUptodate(page)) {
if (sd->len < PAGE_CACHE_SIZE) {
if (this_len < PAGE_CACHE_SIZE) {
ret = mapping->a_ops->readpage(file, page);
if (unlikely(ret))
goto out;
@ -582,7 +618,7 @@ find_page:
}
}
ret = mapping->a_ops->prepare_write(file, page, 0, sd->len);
ret = mapping->a_ops->prepare_write(file, page, offset, offset+this_len);
if (ret == AOP_TRUNCATED_PAGE) {
page_cache_release(page);
goto find_page;
@ -592,18 +628,22 @@ find_page:
if (!(buf->flags & PIPE_BUF_FLAG_STOLEN)) {
char *dst = kmap_atomic(page, KM_USER0);
memcpy(dst + offset, src + buf->offset, sd->len);
memcpy(dst + offset, src + buf->offset, this_len);
flush_dcache_page(page);
kunmap_atomic(dst, KM_USER0);
}
ret = mapping->a_ops->commit_write(file, page, 0, sd->len);
ret = mapping->a_ops->commit_write(file, page, offset, offset+this_len);
if (ret == AOP_TRUNCATED_PAGE) {
page_cache_release(page);
goto find_page;
} else if (ret)
goto out;
/*
* Return the number of bytes written.
*/
ret = this_len;
mark_page_accessed(page);
balance_dirty_pages_ratelimited(mapping);
out:
@ -616,17 +656,14 @@ out_nomem:
return ret;
}
typedef int (splice_actor)(struct pipe_inode_info *, struct pipe_buffer *,
struct splice_desc *);
/*
* Pipe input worker. Most of this logic works like a regular pipe, the
* key here is the 'actor' worker passed in that actually moves the data
* to the wanted destination. See pipe_to_file/pipe_to_sendpage above.
*/
static ssize_t move_from_pipe(struct pipe_inode_info *pipe, struct file *out,
loff_t *ppos, size_t len, unsigned int flags,
splice_actor *actor)
ssize_t splice_from_pipe(struct pipe_inode_info *pipe, struct file *out,
loff_t *ppos, size_t len, unsigned int flags,
splice_actor *actor)
{
int ret, do_wakeup, err;
struct splice_desc sd;
@ -652,16 +689,22 @@ static ssize_t move_from_pipe(struct pipe_inode_info *pipe, struct file *out,
sd.len = sd.total_len;
err = actor(pipe, buf, &sd);
if (err) {
if (err <= 0) {
if (!ret && err != -ENODATA)
ret = err;
break;
}
ret += sd.len;
buf->offset += sd.len;
buf->len -= sd.len;
ret += err;
buf->offset += err;
buf->len -= err;
sd.len -= err;
sd.pos += err;
sd.total_len -= err;
if (sd.len)
continue;
if (!buf->len) {
buf->ops = NULL;
@ -672,8 +715,6 @@ static ssize_t move_from_pipe(struct pipe_inode_info *pipe, struct file *out,
do_wakeup = 1;
}
sd.pos += sd.len;
sd.total_len -= sd.len;
if (!sd.total_len)
break;
}
@ -741,7 +782,7 @@ generic_file_splice_write(struct pipe_inode_info *pipe, struct file *out,
struct address_space *mapping = out->f_mapping;
ssize_t ret;
ret = move_from_pipe(pipe, out, ppos, len, flags, pipe_to_file);
ret = splice_from_pipe(pipe, out, ppos, len, flags, pipe_to_file);
if (ret > 0) {
struct inode *inode = mapping->host;
@ -783,7 +824,7 @@ EXPORT_SYMBOL(generic_file_splice_write);
ssize_t generic_splice_sendpage(struct pipe_inode_info *pipe, struct file *out,
loff_t *ppos, size_t len, unsigned int flags)
{
return move_from_pipe(pipe, out, ppos, len, flags, pipe_to_sendpage);
return splice_from_pipe(pipe, out, ppos, len, flags, pipe_to_sendpage);
}
EXPORT_SYMBOL(generic_splice_sendpage);
@ -870,7 +911,7 @@ long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,
/*
* We don't have an immediate reader, but we'll read the stuff
* out of the pipe right after the move_to_pipe(). So set
* out of the pipe right after the splice_to_pipe(). So set
* PIPE_READERS appropriately.
*/
pipe->readers = 1;
@ -1010,6 +1051,174 @@ static long do_splice(struct file *in, loff_t __user *off_in,
return -EINVAL;
}
/*
* Map an iov into an array of pages and offset/length tupples. With the
* partial_page structure, we can map several non-contiguous ranges into
* our ones pages[] map instead of splitting that operation into pieces.
* Could easily be exported as a generic helper for other users, in which
* case one would probably want to add a 'max_nr_pages' parameter as well.
*/
static int get_iovec_page_array(const struct iovec __user *iov,
unsigned int nr_vecs, struct page **pages,
struct partial_page *partial)
{
int buffers = 0, error = 0;
/*
* It's ok to take the mmap_sem for reading, even
* across a "get_user()".
*/
down_read(&current->mm->mmap_sem);
while (nr_vecs) {
unsigned long off, npages;
void __user *base;
size_t len;
int i;
/*
* Get user address base and length for this iovec.
*/
error = get_user(base, &iov->iov_base);
if (unlikely(error))
break;
error = get_user(len, &iov->iov_len);
if (unlikely(error))
break;
/*
* Sanity check this iovec. 0 read succeeds.
*/
if (unlikely(!len))
break;
error = -EFAULT;
if (unlikely(!base))
break;
/*
* Get this base offset and number of pages, then map
* in the user pages.
*/
off = (unsigned long) base & ~PAGE_MASK;
npages = (off + len + PAGE_SIZE - 1) >> PAGE_SHIFT;
if (npages > PIPE_BUFFERS - buffers)
npages = PIPE_BUFFERS - buffers;
error = get_user_pages(current, current->mm,
(unsigned long) base, npages, 0, 0,
&pages[buffers], NULL);
if (unlikely(error <= 0))
break;
/*
* Fill this contiguous range into the partial page map.
*/
for (i = 0; i < error; i++) {
const int plen = min_t(size_t, len, PAGE_SIZE) - off;
partial[buffers].offset = off;
partial[buffers].len = plen;
off = 0;
len -= plen;
buffers++;
}
/*
* We didn't complete this iov, stop here since it probably
* means we have to move some of this into a pipe to
* be able to continue.
*/
if (len)
break;
/*
* Don't continue if we mapped fewer pages than we asked for,
* or if we mapped the max number of pages that we have
* room for.
*/
if (error < npages || buffers == PIPE_BUFFERS)
break;
nr_vecs--;
iov++;
}
up_read(&current->mm->mmap_sem);
if (buffers)
return buffers;
return error;
}
/*
* vmsplice splices a user address range into a pipe. It can be thought of
* as splice-from-memory, where the regular splice is splice-from-file (or
* to file). In both cases the output is a pipe, naturally.
*
* Note that vmsplice only supports splicing _from_ user memory to a pipe,
* not the other way around. Splicing from user memory is a simple operation
* that can be supported without any funky alignment restrictions or nasty
* vm tricks. We simply map in the user memory and fill them into a pipe.
* The reverse isn't quite as easy, though. There are two possible solutions
* for that:
*
* - memcpy() the data internally, at which point we might as well just
* do a regular read() on the buffer anyway.
* - Lots of nasty vm tricks, that are neither fast nor flexible (it
* has restriction limitations on both ends of the pipe).
*
* Alas, it isn't here.
*
*/
static long do_vmsplice(struct file *file, const struct iovec __user *iov,
unsigned long nr_segs, unsigned int flags)
{
struct pipe_inode_info *pipe = file->f_dentry->d_inode->i_pipe;
struct page *pages[PIPE_BUFFERS];
struct partial_page partial[PIPE_BUFFERS];
struct splice_pipe_desc spd = {
.pages = pages,
.partial = partial,
.flags = flags,
.ops = &user_page_pipe_buf_ops,
};
if (unlikely(!pipe))
return -EBADF;
if (unlikely(nr_segs > UIO_MAXIOV))
return -EINVAL;
else if (unlikely(!nr_segs))
return 0;
spd.nr_pages = get_iovec_page_array(iov, nr_segs, pages, partial);
if (spd.nr_pages <= 0)
return spd.nr_pages;
return splice_to_pipe(pipe, &spd);
}
asmlinkage long sys_vmsplice(int fd, const struct iovec __user *iov,
unsigned long nr_segs, unsigned int flags)
{
struct file *file;
long error;
int fput;
error = -EBADF;
file = fget_light(fd, &fput);
if (file) {
if (file->f_mode & FMODE_WRITE)
error = do_vmsplice(file, iov, nr_segs, flags);
fput_light(file, fput);
}
return error;
}
asmlinkage long sys_splice(int fd_in, loff_t __user *off_in,
int fd_out, loff_t __user *off_out,
size_t len, unsigned int flags)

3
include/asm-i386/unistd.h
View File

@ -321,8 +321,9 @@
#define __NR_splice 313
#define __NR_sync_file_range 314
#define __NR_tee 315
#define __NR_vmsplice 316
#define NR_syscalls 316
#define NR_syscalls 317
/*
* user-visible error numbers are in the range -1 - -128: see

3
include/asm-ia64/unistd.h
View File

@ -290,12 +290,13 @@
#define __NR_get_robust_list 1299
#define __NR_sync_file_range 1300
#define __NR_tee 1301
#define __NR_vmsplice 1302
#ifdef __KERNEL__
#include <linux/config.h>
#define NR_syscalls 278 /* length of syscall table */
#define NR_syscalls 279 /* length of syscall table */
#define __ARCH_WANT_SYS_RT_SIGACTION

3
include/asm-powerpc/unistd.h
View File

@ -303,8 +303,9 @@
#define __NR_unshare 282
#define __NR_splice 283
#define __NR_tee 284
#define __NR_vmsplice 285
#define __NR_syscalls 285
#define __NR_syscalls 286
#ifdef __KERNEL__
#define __NR__exit __NR_exit

4
include/asm-x86_64/unistd.h
View File

@ -615,8 +615,10 @@ __SYSCALL(__NR_splice, sys_splice)
__SYSCALL(__NR_tee, sys_tee)
#define __NR_sync_file_range 277
__SYSCALL(__NR_sync_file_range, sys_sync_file_range)
#define __NR_vmsplice 278
__SYSCALL(__NR_vmsplice, sys_vmsplice)
#define __NR_syscall_max __NR_sync_file_range
#define __NR_syscall_max __NR_vmsplice
#ifndef __NO_STUBS

17
include/linux/pipe_fs_i.h
View File

@ -61,4 +61,21 @@ void __free_pipe_info(struct pipe_inode_info *);
/* from/to, of course */
#define SPLICE_F_MORE (0x04) /* expect more data */
/*
* Passed to the actors
*/
struct splice_desc {
unsigned int len, total_len; /* current and remaining length */
unsigned int flags; /* splice flags */
struct file *file; /* file to read/write */
loff_t pos; /* file position */
};
typedef int (splice_actor)(struct pipe_inode_info *, struct pipe_buffer *,
struct splice_desc *);
extern ssize_t splice_from_pipe(struct pipe_inode_info *, struct file *,
loff_t *, size_t, unsigned int,
splice_actor *);
#endif

3
include/linux/syscalls.h
View File

@ -574,6 +574,9 @@ asmlinkage long sys_splice(int fd_in, loff_t __user *off_in,
int fd_out, loff_t __user *off_out,
size_t len, unsigned int flags);
asmlinkage long sys_vmsplice(int fd, const struct iovec __user *iov,
unsigned long nr_segs, unsigned int flags);
asmlinkage long sys_tee(int fdin, int fdout, size_t len, unsigned int flags);
asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes,

4
kernel/hrtimer.c
View File

@ -836,7 +836,7 @@ static void migrate_hrtimers(int cpu)
}
#endif /* CONFIG_HOTPLUG_CPU */
static int __devinit hrtimer_cpu_notify(struct notifier_block *self,
static int hrtimer_cpu_notify(struct notifier_block *self,
unsigned long action, void *hcpu)
{
long cpu = (long)hcpu;
@ -860,7 +860,7 @@ static int __devinit hrtimer_cpu_notify(struct notifier_block *self,
return NOTIFY_OK;
}
static struct notifier_block __devinitdata hrtimers_nb = {
static struct notifier_block hrtimers_nb = {
.notifier_call = hrtimer_cpu_notify,
};

2
kernel/profile.c
View File

@ -299,7 +299,7 @@ out:
}
#ifdef CONFIG_HOTPLUG_CPU
static int __devinit profile_cpu_callback(struct notifier_block *info,
static int profile_cpu_callback(struct notifier_block *info,
unsigned long action, void *__cpu)
{
int node, cpu = (unsigned long)__cpu;

4
kernel/rcupdate.c
View File

@ -520,7 +520,7 @@ static void __devinit rcu_online_cpu(int cpu)
tasklet_init(&per_cpu(rcu_tasklet, cpu), rcu_process_callbacks, 0UL);
}
static int __devinit rcu_cpu_notify(struct notifier_block *self,
static int rcu_cpu_notify(struct notifier_block *self,
unsigned long action, void *hcpu)
{
long cpu = (long)hcpu;
@ -537,7 +537,7 @@ static int __devinit rcu_cpu_notify(struct notifier_block *self,
return NOTIFY_OK;
}
static struct notifier_block __devinitdata rcu_nb = {
static struct notifier_block rcu_nb = {
.notifier_call = rcu_cpu_notify,
};

2
kernel/sched.c
View File

@ -4814,7 +4814,7 @@ static int migration_call(struct notifier_block *nfb, unsigned long action,
/* Register at highest priority so that task migration (migrate_all_tasks)
* happens before everything else.
*/
static struct notifier_block __devinitdata migration_notifier = {
static struct notifier_block migration_notifier = {
.notifier_call = migration_call,
.priority = 10
};

4
kernel/softirq.c
View File

@ -446,7 +446,7 @@ static void takeover_tasklets(unsigned int cpu)
}
#endif /* CONFIG_HOTPLUG_CPU */
static int __devinit cpu_callback(struct notifier_block *nfb,
static int cpu_callback(struct notifier_block *nfb,
unsigned long action,
void *hcpu)
{
@ -484,7 +484,7 @@ static int __devinit cpu_callback(struct notifier_block *nfb,
return NOTIFY_OK;
}
static struct notifier_block __devinitdata cpu_nfb = {
static struct notifier_block cpu_nfb = {
.notifier_call = cpu_callback
};

4
kernel/softlockup.c
View File

@ -104,7 +104,7 @@ static int watchdog(void * __bind_cpu)
/*
* Create/destroy watchdog threads as CPUs come and go:
*/
static int __devinit
static int
cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
{
int hotcpu = (unsigned long)hcpu;
@ -140,7 +140,7 @@ cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
return NOTIFY_OK;
}
static struct notifier_block __devinitdata cpu_nfb = {
static struct notifier_block cpu_nfb = {
.notifier_call = cpu_callback
};

4
kernel/timer.c
View File

@ -1314,7 +1314,7 @@ static void __devinit migrate_timers(int cpu)
}
#endif /* CONFIG_HOTPLUG_CPU */
static int __devinit timer_cpu_notify(struct notifier_block *self,
static int timer_cpu_notify(struct notifier_block *self,
unsigned long action, void *hcpu)
{
long cpu = (long)hcpu;
@ -1334,7 +1334,7 @@ static int __devinit timer_cpu_notify(struct notifier_block *self,
return NOTIFY_OK;
}
static struct notifier_block __devinitdata timers_nb = {
static struct notifier_block timers_nb = {
.notifier_call = timer_cpu_notify,
};

2
kernel/workqueue.c
View File

@ -547,7 +547,7 @@ static void take_over_work(struct workqueue_struct *wq, unsigned int cpu)
}
/* We're holding the cpucontrol mutex here */
static int __devinit workqueue_cpu_callback(struct notifier_block *nfb,
static int workqueue_cpu_callback(struct notifier_block *nfb,
unsigned long action,
void *hcpu)
{

2
mm/page_alloc.c
View File

@ -1962,7 +1962,7 @@ static inline void free_zone_pagesets(int cpu)
}
}
static int __cpuinit pageset_cpuup_callback(struct notifier_block *nfb,
static int pageset_cpuup_callback(struct notifier_block *nfb,
unsigned long action,
void *hcpu)
{

2
mm/slab.c
View File

@ -1036,7 +1036,7 @@ static inline void free_alien_cache(struct array_cache **ac_ptr)
#endif
static int __devinit cpuup_callback(struct notifier_block *nfb,
static int cpuup_callback(struct notifier_block *nfb,
unsigned long action, void *hcpu)
{
long cpu = (long)hcpu;

2
mm/vmscan.c
View File

@ -1328,7 +1328,7 @@ repeat:
not required for correctness. So if the last cpu in a node goes
away, we get changed to run anywhere: as the first one comes back,
restore their cpu bindings. */
static int __devinit cpu_callback(struct notifier_block *nfb,
static int cpu_callback(struct notifier_block *nfb,
unsigned long action, void *hcpu)
{
pg_data_t *pgdat;

8
net/bridge/br_forward.c
View File

@ -16,6 +16,7 @@
#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <linux/if_vlan.h>
#include <linux/netfilter_bridge.h>
#include "br_private.h"
@ -29,10 +30,15 @@ static inline int should_deliver(const struct net_bridge_port *p,
return 1;
}
static inline unsigned packet_length(const struct sk_buff *skb)
{
return skb->len - (skb->protocol == htons(ETH_P_8021Q) ? VLAN_HLEN : 0);
}
int br_dev_queue_push_xmit(struct sk_buff *skb)
{
/* drop mtu oversized packets except tso */
if (skb->len > skb->dev->mtu && !skb_shinfo(skb)->tso_size)
if (packet_length(skb) > skb->dev->mtu && !skb_shinfo(skb)->tso_size)
kfree_skb(skb);
else {
#ifdef CONFIG_BRIDGE_NETFILTER