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Merge branch 'akpm' (patches from Andrew)

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Merge misc fixes from Andrew Morton:
 "A bunch of fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  slub: mark the dangling ifdef #else of CONFIG_SLUB_DEBUG
  slub: avoid irqoff/on in bulk allocation
  slub: create new ___slab_alloc function that can be called with irqs disabled
  mm: fix up sparse warning in gfpflags_allow_blocking
  ocfs2: fix umask ignored issue
  PM/OPP: add entry in MAINTAINERS
  kernel/panic.c: turn off locks debug before releasing console lock
  kernel/signal.c: unexport sigsuspend()
  kasan: fix kmemleak false-positive in kasan_module_alloc()
  fat: fix fake_offset handling on error path
  mm/hugetlbfs: fix bugs in fallocate hole punch of areas with holes
  mm/page-writeback.c: initialize m_dirty to avoid compile warning
  various: fix pci_set_dma_mask return value checking
  mm: loosen MADV_NOHUGEPAGE to enable Qemu postcopy on s390
  mm: vmalloc: don't remove inexistent guard hole in remove_vm_area()
  tools/vm/page-types.c: support KPF_IDLE
  ncpfs: don't allow negative timeouts
  configfs: allow dynamic group creation
  MAINTAINERS: add Moritz as reviewer for FPGA Manager Framework
  slab.h: sprinkle __assume_aligned attributes
This commit is contained in:
Linus Torvalds 2015-11-21 10:49:13 -08:00
commit 3ad5d7e06a
28 changed files with 283 additions and 111 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
MAINTAINERS
View File

@ -4411,6 +4411,7 @@ K: fmc_d.*register
FPGA MANAGER FRAMEWORK
M: Alan Tull <atull@opensource.altera.com>
R: Moritz Fischer <moritz.fischer@ettus.com>
S: Maintained
F: drivers/fpga/
F: include/linux/fpga/fpga-mgr.h
@ -7904,6 +7905,18 @@ S: Maintained
F: net/openvswitch/
F: include/uapi/linux/openvswitch.h
OPERATING PERFORMANCE POINTS (OPP)
M: Viresh Kumar <vireshk@kernel.org>
M: Nishanth Menon <nm@ti.com>
M: Stephen Boyd <sboyd@codeaurora.org>
L: linux-pm@vger.kernel.org
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm.git
F: drivers/base/power/opp/
F: include/linux/pm_opp.h
F: Documentation/power/opp.txt
F: Documentation/devicetree/bindings/opp/
OPL4 DRIVER
M: Clemens Ladisch <clemens@ladisch.de>
L: alsa-devel@alsa-project.org (moderated for non-subscribers)

4
drivers/media/pci/cx23885/cx23885-core.c
View File

@ -1992,9 +1992,9 @@ static int cx23885_initdev(struct pci_dev *pci_dev,
(unsigned long long)pci_resource_start(pci_dev, 0));
pci_set_master(pci_dev);
if (!pci_set_dma_mask(pci_dev, 0xffffffff)) {
err = pci_set_dma_mask(pci_dev, 0xffffffff);
if (err) {
printk("%s/0: Oops: no 32bit PCI DMA ???\n", dev->name);
err = -EIO;
goto fail_context;
}

3
drivers/media/pci/cx25821/cx25821-core.c
View File

@ -1319,7 +1319,8 @@ static int cx25821_initdev(struct pci_dev *pci_dev,
dev->pci_lat, (unsigned long long)dev->base_io_addr);
pci_set_master(pci_dev);
if (!pci_set_dma_mask(pci_dev, 0xffffffff)) {
err = pci_set_dma_mask(pci_dev, 0xffffffff);
if (err) {
pr_err("%s/0: Oops: no 32bit PCI DMA ???\n", dev->name);
err = -EIO;
goto fail_irq;

4
drivers/media/pci/cx88/cx88-alsa.c
View File

@ -890,9 +890,9 @@ static int snd_cx88_create(struct snd_card *card, struct pci_dev *pci,
return err;
}
if (!pci_set_dma_mask(pci,DMA_BIT_MASK(32))) {
err = pci_set_dma_mask(pci,DMA_BIT_MASK(32));
if (err) {
dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name);
err = -EIO;
cx88_core_put(core, pci);
return err;
}

3
drivers/media/pci/cx88/cx88-mpeg.c
View File

@ -393,7 +393,8 @@ static int cx8802_init_common(struct cx8802_dev *dev)
if (pci_enable_device(dev->pci))
return -EIO;
pci_set_master(dev->pci);
if (!pci_set_dma_mask(dev->pci,DMA_BIT_MASK(32))) {
err = pci_set_dma_mask(dev->pci,DMA_BIT_MASK(32));
if (err) {
printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
return -EIO;
}

4
drivers/media/pci/cx88/cx88-video.c
View File

@ -1314,9 +1314,9 @@ static int cx8800_initdev(struct pci_dev *pci_dev,
dev->pci_lat,(unsigned long long)pci_resource_start(pci_dev,0));
pci_set_master(pci_dev);
if (!pci_set_dma_mask(pci_dev,DMA_BIT_MASK(32))) {
err = pci_set_dma_mask(pci_dev,DMA_BIT_MASK(32));
if (err) {
printk("%s/0: Oops: no 32bit PCI DMA ???\n",core->name);
err = -EIO;
goto fail_core;
}
dev->alloc_ctx = vb2_dma_sg_init_ctx(&pci_dev->dev);

2
drivers/media/pci/netup_unidvb/netup_unidvb_core.c
View File

@ -810,7 +810,7 @@ static int netup_unidvb_initdev(struct pci_dev *pci_dev,
"%s(): board vendor 0x%x, revision 0x%x\n",
__func__, board_vendor, board_revision);
pci_set_master(pci_dev);
if (!pci_set_dma_mask(pci_dev, 0xffffffff)) {
if (pci_set_dma_mask(pci_dev, 0xffffffff) < 0) {
dev_err(&pci_dev->dev,
"%s(): 32bit PCI DMA is not supported\n", __func__);
goto pci_detect_err;

4
drivers/media/pci/saa7134/saa7134-core.c
View File

@ -951,9 +951,9 @@ static int saa7134_initdev(struct pci_dev *pci_dev,
pci_name(pci_dev), dev->pci_rev, pci_dev->irq,
dev->pci_lat,(unsigned long long)pci_resource_start(pci_dev,0));
pci_set_master(pci_dev);
if (!pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32))) {
err = pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32));
if (err) {
pr_warn("%s: Oops: no 32bit PCI DMA ???\n", dev->name);
err = -EIO;
goto fail1;
}

4
drivers/media/pci/saa7164/saa7164-core.c
View File

@ -1264,9 +1264,9 @@ static int saa7164_initdev(struct pci_dev *pci_dev,
pci_set_master(pci_dev);
/* TODO */
if (!pci_set_dma_mask(pci_dev, 0xffffffff)) {
err = pci_set_dma_mask(pci_dev, 0xffffffff);
if (err) {
printk("%s/0: Oops: no 32bit PCI DMA ???\n", dev->name);
err = -EIO;
goto fail_irq;
}

4
drivers/media/pci/tw68/tw68-core.c
View File

@ -257,9 +257,9 @@ static int tw68_initdev(struct pci_dev *pci_dev,
dev->name, pci_name(pci_dev), dev->pci_rev, pci_dev->irq,
dev->pci_lat, (u64)pci_resource_start(pci_dev, 0));
pci_set_master(pci_dev);
if (!pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32))) {
err = pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32));
if (err) {
pr_info("%s: Oops: no 32bit PCI DMA ???\n", dev->name);
err = -EIO;
goto fail1;
}

5
drivers/net/ethernet/amd/pcnet32.c
View File

@ -1500,10 +1500,11 @@ pcnet32_probe_pci(struct pci_dev *pdev, const struct pci_device_id *ent)
return -ENODEV;
}
if (!pci_set_dma_mask(pdev, PCNET32_DMA_MASK)) {
err = pci_set_dma_mask(pdev, PCNET32_DMA_MASK);
if (err) {
if (pcnet32_debug & NETIF_MSG_PROBE)
pr_err("architecture does not support 32bit PCI busmaster DMA\n");
return -ENODEV;
return err;
}
if (!request_region(ioaddr, PCNET32_TOTAL_SIZE, "pcnet32_probe_pci")) {
if (pcnet32_debug & NETIF_MSG_PROBE)

110
fs/configfs/dir.c
View File

@ -1636,6 +1636,116 @@ const struct file_operations configfs_dir_operations = {
.iterate = configfs_readdir,
};
/**
* configfs_register_group - creates a parent-child relation between two groups
* @parent_group: parent group
* @group: child group
*
* link groups, creates dentry for the child and attaches it to the
* parent dentry.
*
* Return: 0 on success, negative errno code on error
*/
int configfs_register_group(struct config_group *parent_group,
struct config_group *group)
{
struct configfs_subsystem *subsys = parent_group->cg_subsys;
struct dentry *parent;
int ret;
mutex_lock(&subsys->su_mutex);
link_group(parent_group, group);
mutex_unlock(&subsys->su_mutex);
parent = parent_group->cg_item.ci_dentry;
mutex_lock_nested(&d_inode(parent)->i_mutex, I_MUTEX_PARENT);
ret = create_default_group(parent_group, group);
if (!ret) {
spin_lock(&configfs_dirent_lock);
configfs_dir_set_ready(group->cg_item.ci_dentry->d_fsdata);
spin_unlock(&configfs_dirent_lock);
}
mutex_unlock(&d_inode(parent)->i_mutex);
return ret;
}
EXPORT_SYMBOL(configfs_register_group);
/**
* configfs_unregister_group() - unregisters a child group from its parent
* @group: parent group to be unregistered
*
* Undoes configfs_register_group()
*/
void configfs_unregister_group(struct config_group *group)
{
struct configfs_subsystem *subsys = group->cg_subsys;
struct dentry *dentry = group->cg_item.ci_dentry;
struct dentry *parent = group->cg_item.ci_parent->ci_dentry;
mutex_lock_nested(&d_inode(parent)->i_mutex, I_MUTEX_PARENT);
spin_lock(&configfs_dirent_lock);
configfs_detach_prep(dentry, NULL);
spin_unlock(&configfs_dirent_lock);
configfs_detach_group(&group->cg_item);
d_inode(dentry)->i_flags |= S_DEAD;
dont_mount(dentry);
d_delete(dentry);
mutex_unlock(&d_inode(parent)->i_mutex);
dput(dentry);
mutex_lock(&subsys->su_mutex);
unlink_group(group);
mutex_unlock(&subsys->su_mutex);
}
EXPORT_SYMBOL(configfs_unregister_group);
/**
* configfs_register_default_group() - allocates and registers a child group
* @parent_group: parent group
* @name: child group name
* @item_type: child item type description
*
* boilerplate to allocate and register a child group with its parent. We need
* kzalloc'ed memory because child's default_group is initially empty.
*
* Return: allocated config group or ERR_PTR() on error
*/
struct config_group *
configfs_register_default_group(struct config_group *parent_group,
const char *name,
struct config_item_type *item_type)
{
int ret;
struct config_group *group;
group = kzalloc(sizeof(*group), GFP_KERNEL);
if (!group)
return ERR_PTR(-ENOMEM);
config_group_init_type_name(group, name, item_type);
ret = configfs_register_group(parent_group, group);
if (ret) {
kfree(group);
return ERR_PTR(ret);
}
return group;
}
EXPORT_SYMBOL(configfs_register_default_group);
/**
* configfs_unregister_default_group() - unregisters and frees a child group
* @group: the group to act on
*/
void configfs_unregister_default_group(struct config_group *group)
{
configfs_unregister_group(group);
kfree(group);
}
EXPORT_SYMBOL(configfs_unregister_default_group);
int configfs_register_subsystem(struct configfs_subsystem *subsys)
{
int err;

12
fs/fat/dir.c
View File

@ -610,9 +610,9 @@ parse_record:
int status = fat_parse_long(inode, &cpos, &bh, &de,
&unicode, &nr_slots);
if (status < 0) {
ctx->pos = cpos;
bh = NULL;
ret = status;
goto out;
goto end_of_dir;
} else if (status == PARSE_INVALID)
goto record_end;
else if (status == PARSE_NOT_LONGNAME)
@ -654,8 +654,9 @@ parse_record:
fill_len = short_len;
start_filldir:
if (!fake_offset)
ctx->pos = cpos - (nr_slots + 1) * sizeof(struct msdos_dir_entry);
if (fake_offset && ctx->pos < 2)
ctx->pos = 2;
if (!memcmp(de->name, MSDOS_DOT, MSDOS_NAME)) {
if (!dir_emit_dot(file, ctx))
@ -681,7 +682,11 @@ record_end:
fake_offset = 0;
ctx->pos = cpos;
goto get_new;
end_of_dir:
if (fake_offset && cpos < 2)
ctx->pos = 2;
else
ctx->pos = cpos;
fill_failed:
brelse(bh);
@ -689,6 +694,7 @@ fill_failed:
__putname(unicode);
out:
mutex_unlock(&sbi->s_lock);
return ret;
}

63
fs/hugetlbfs/inode.c
View File

@ -332,12 +332,17 @@ static void remove_huge_page(struct page *page)
* truncation is indicated by end of range being LLONG_MAX
* In this case, we first scan the range and release found pages.
* After releasing pages, hugetlb_unreserve_pages cleans up region/reserv
* maps and global counts.
* maps and global counts. Page faults can not race with truncation
* in this routine. hugetlb_no_page() prevents page faults in the
* truncated range. It checks i_size before allocation, and again after
* with the page table lock for the page held. The same lock must be
* acquired to unmap a page.
* hole punch is indicated if end is not LLONG_MAX
* In the hole punch case we scan the range and release found pages.
* Only when releasing a page is the associated region/reserv map
* deleted. The region/reserv map for ranges without associated
* pages are not modified.
* pages are not modified. Page faults can race with hole punch.
* This is indicated if we find a mapped page.
* Note: If the passed end of range value is beyond the end of file, but
* not LLONG_MAX this routine still performs a hole punch operation.
*/
@ -361,46 +366,37 @@ static void remove_inode_hugepages(struct inode *inode, loff_t lstart,
next = start;
while (next < end) {
/*
* Make sure to never grab more pages that we
* might possibly need.
* Don't grab more pages than the number left in the range.
*/
if (end - next < lookup_nr)
lookup_nr = end - next;
/*
* This pagevec_lookup() may return pages past 'end',
* so we must check for page->index > end.
* When no more pages are found, we are done.
*/
if (!pagevec_lookup(&pvec, mapping, next, lookup_nr)) {
if (next == start)
if (!pagevec_lookup(&pvec, mapping, next, lookup_nr))
break;
next = start;
continue;
}
for (i = 0; i < pagevec_count(&pvec); ++i) {
struct page *page = pvec.pages[i];
u32 hash;
/*
* The page (index) could be beyond end. This is
* only possible in the punch hole case as end is
* max page offset in the truncate case.
*/
next = page->index;
if (next >= end)
break;
hash = hugetlb_fault_mutex_hash(h, current->mm,
&pseudo_vma,
mapping, next, 0);
mutex_lock(&hugetlb_fault_mutex_table[hash]);
lock_page(page);
if (page->index >= end) {
unlock_page(page);
mutex_unlock(&hugetlb_fault_mutex_table[hash]);
next = end; /* we are done */
break;
}
/*
* If page is mapped, it was faulted in after being
* unmapped. Do nothing in this race case. In the
* normal case page is not mapped.
*/
if (!page_mapped(page)) {
if (likely(!page_mapped(page))) {
bool rsv_on_error = !PagePrivate(page);
/*
* We must free the huge page and remove
@ -421,17 +417,23 @@ static void remove_inode_hugepages(struct inode *inode, loff_t lstart,
hugetlb_fix_reserve_counts(
inode, rsv_on_error);
}
} else {
/*
* If page is mapped, it was faulted in after
* being unmapped. It indicates a race between
* hole punch and page fault. Do nothing in
* this case. Getting here in a truncate
* operation is a bug.
*/
BUG_ON(truncate_op);
}
if (page->index > next)
next = page->index;
++next;
unlock_page(page);
mutex_unlock(&hugetlb_fault_mutex_table[hash]);
}
++next;
huge_pagevec_release(&pvec);
cond_resched();
}
if (truncate_op)
@ -647,9 +649,6 @@ static long hugetlbfs_fallocate(struct file *file, int mode, loff_t offset,
if (!(mode & FALLOC_FL_KEEP_SIZE) && offset + len > inode->i_size)
i_size_write(inode, offset + len);
inode->i_ctime = CURRENT_TIME;
spin_lock(&inode->i_lock);
inode->i_private = NULL;
spin_unlock(&inode->i_lock);
out:
mutex_unlock(&inode->i_mutex);
return error;

2
fs/ncpfs/ioctl.c
View File

@ -525,6 +525,8 @@ static long __ncp_ioctl(struct inode *inode, unsigned int cmd, unsigned long arg
switch (rqdata.cmd) {
case NCP_LOCK_EX:
case NCP_LOCK_SH:
if (rqdata.timeout < 0)
return -EINVAL;
if (rqdata.timeout == 0)
rqdata.timeout = NCP_LOCK_DEFAULT_TIMEOUT;
else if (rqdata.timeout > NCP_LOCK_MAX_TIMEOUT)

2
fs/ocfs2/namei.c
View File

@ -372,6 +372,8 @@ static int ocfs2_mknod(struct inode *dir,
mlog_errno(status);
goto leave;
}
/* update inode->i_mode after mask with "umask". */
inode->i_mode = mode;
handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb,
S_ISDIR(mode),

10
include/linux/configfs.h
View File

@ -197,6 +197,16 @@ static inline struct configfs_subsystem *to_configfs_subsystem(struct config_gro
int configfs_register_subsystem(struct configfs_subsystem *subsys);
void configfs_unregister_subsystem(struct configfs_subsystem *subsys);
int configfs_register_group(struct config_group *parent_group,
struct config_group *group);
void configfs_unregister_group(struct config_group *group);
struct config_group *
configfs_register_default_group(struct config_group *parent_group,
const char *name,
struct config_item_type *item_type);
void configfs_unregister_default_group(struct config_group *group);
/* These functions can sleep and can alloc with GFP_KERNEL */
/* WARNING: These cannot be called underneath configfs callbacks!! */
int configfs_depend_item(struct configfs_subsystem *subsys, struct config_item *target);

2
include/linux/gfp.h
View File

@ -271,7 +271,7 @@ static inline int gfpflags_to_migratetype(const gfp_t gfp_flags)
static inline bool gfpflags_allow_blocking(const gfp_t gfp_flags)
{
return gfp_flags & __GFP_DIRECT_RECLAIM;
return (bool __force)(gfp_flags & __GFP_DIRECT_RECLAIM);
}
#ifdef CONFIG_HIGHMEM

1
include/linux/signal.h
View File

@ -239,7 +239,6 @@ extern int sigprocmask(int, sigset_t *, sigset_t *);
extern void set_current_blocked(sigset_t *);
extern void __set_current_blocked(const sigset_t *);
extern int show_unhandled_signals;
extern int sigsuspend(sigset_t *);
struct sigaction {
#ifndef __ARCH_HAS_IRIX_SIGACTION

43
include/linux/slab.h
View File

@ -157,6 +157,24 @@ size_t ksize(const void *);
#define ARCH_KMALLOC_MINALIGN __alignof__(unsigned long long)
#endif
/*
* Setting ARCH_SLAB_MINALIGN in arch headers allows a different alignment.
* Intended for arches that get misalignment faults even for 64 bit integer
* aligned buffers.
*/
#ifndef ARCH_SLAB_MINALIGN
#define ARCH_SLAB_MINALIGN __alignof__(unsigned long long)
#endif
/*
* kmalloc and friends return ARCH_KMALLOC_MINALIGN aligned
* pointers. kmem_cache_alloc and friends return ARCH_SLAB_MINALIGN
* aligned pointers.
*/
#define __assume_kmalloc_alignment __assume_aligned(ARCH_KMALLOC_MINALIGN)
#define __assume_slab_alignment __assume_aligned(ARCH_SLAB_MINALIGN)
#define __assume_page_alignment __assume_aligned(PAGE_SIZE)
/*
* Kmalloc array related definitions
*/
@ -286,8 +304,8 @@ static __always_inline int kmalloc_index(size_t size)
}
#endif /* !CONFIG_SLOB */
void *__kmalloc(size_t size, gfp_t flags);
void *kmem_cache_alloc(struct kmem_cache *, gfp_t flags);
void *__kmalloc(size_t size, gfp_t flags) __assume_kmalloc_alignment;
void *kmem_cache_alloc(struct kmem_cache *, gfp_t flags) __assume_slab_alignment;
void kmem_cache_free(struct kmem_cache *, void *);
/*
@ -301,8 +319,8 @@ void kmem_cache_free_bulk(struct kmem_cache *, size_t, void **);
bool kmem_cache_alloc_bulk(struct kmem_cache *, gfp_t, size_t, void **);
#ifdef CONFIG_NUMA
void *__kmalloc_node(size_t size, gfp_t flags, int node);
void *kmem_cache_alloc_node(struct kmem_cache *, gfp_t flags, int node);
void *__kmalloc_node(size_t size, gfp_t flags, int node) __assume_kmalloc_alignment;
void *kmem_cache_alloc_node(struct kmem_cache *, gfp_t flags, int node) __assume_slab_alignment;
#else
static __always_inline void *__kmalloc_node(size_t size, gfp_t flags, int node)
{
@ -316,12 +334,12 @@ static __always_inline void *kmem_cache_alloc_node(struct kmem_cache *s, gfp_t f
#endif
#ifdef CONFIG_TRACING
extern void *kmem_cache_alloc_trace(struct kmem_cache *, gfp_t, size_t);
extern void *kmem_cache_alloc_trace(struct kmem_cache *, gfp_t, size_t) __assume_slab_alignment;
#ifdef CONFIG_NUMA
extern void *kmem_cache_alloc_node_trace(struct kmem_cache *s,
gfp_t gfpflags,
int node, size_t size);
int node, size_t size) __assume_slab_alignment;
#else
static __always_inline void *
kmem_cache_alloc_node_trace(struct kmem_cache *s,
@ -354,10 +372,10 @@ kmem_cache_alloc_node_trace(struct kmem_cache *s,
}
#endif /* CONFIG_TRACING */
extern void *kmalloc_order(size_t size, gfp_t flags, unsigned int order);
extern void *kmalloc_order(size_t size, gfp_t flags, unsigned int order) __assume_page_alignment;
#ifdef CONFIG_TRACING
extern void *kmalloc_order_trace(size_t size, gfp_t flags, unsigned int order);
extern void *kmalloc_order_trace(size_t size, gfp_t flags, unsigned int order) __assume_page_alignment;
#else
static __always_inline void *
kmalloc_order_trace(size_t size, gfp_t flags, unsigned int order)
@ -482,15 +500,6 @@ static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node)
return __kmalloc_node(size, flags, node);
}
/*
* Setting ARCH_SLAB_MINALIGN in arch headers allows a different alignment.
* Intended for arches that get misalignment faults even for 64 bit integer
* aligned buffers.
*/
#ifndef ARCH_SLAB_MINALIGN
#define ARCH_SLAB_MINALIGN __alignof__(unsigned long long)
#endif
struct memcg_cache_array {
struct rcu_head rcu;
struct kmem_cache *entries[0];

5
kernel/panic.c
View File

@ -152,8 +152,11 @@ void panic(const char *fmt, ...)
* We may have ended up stopping the CPU holding the lock (in
* smp_send_stop()) while still having some valuable data in the console
* buffer. Try to acquire the lock then release it regardless of the
* result. The release will also print the buffers out.
* result. The release will also print the buffers out. Locks debug
* should be disabled to avoid reporting bad unlock balance when
* panic() is not being callled from OOPS.
*/
debug_locks_off();
console_trylock();
console_unlock();

2
kernel/signal.c
View File

@ -3503,7 +3503,7 @@ SYSCALL_DEFINE0(pause)
#endif
int sigsuspend(sigset_t *set)
static int sigsuspend(sigset_t *set)
{
current->saved_sigmask = current->blocked;
set_current_blocked(set);

4
mm/huge_memory.c
View File

@ -2009,7 +2009,7 @@ int hugepage_madvise(struct vm_area_struct *vma,
/*
* Be somewhat over-protective like KSM for now!
*/
if (*vm_flags & (VM_HUGEPAGE | VM_NO_THP))
if (*vm_flags & VM_NO_THP)
return -EINVAL;
*vm_flags &= ~VM_NOHUGEPAGE;
*vm_flags |= VM_HUGEPAGE;
@ -2025,7 +2025,7 @@ int hugepage_madvise(struct vm_area_struct *vma,
/*
* Be somewhat over-protective like KSM for now!
*/
if (*vm_flags & (VM_NOHUGEPAGE | VM_NO_THP))
if (*vm_flags & VM_NO_THP)
return -EINVAL;
*vm_flags &= ~VM_HUGEPAGE;
*vm_flags |= VM_NOHUGEPAGE;

2
mm/kasan/kasan.c
View File

@ -19,6 +19,7 @@
#include <linux/export.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/kmemleak.h>
#include <linux/memblock.h>
#include <linux/memory.h>
#include <linux/mm.h>
@ -444,6 +445,7 @@ int kasan_module_alloc(void *addr, size_t size)
if (ret) {
find_vm_area(addr)->flags |= VM_KASAN;
kmemleak_ignore(ret);
return 0;
}

4
mm/page-writeback.c
View File

@ -1542,7 +1542,9 @@ static void balance_dirty_pages(struct address_space *mapping,
for (;;) {
unsigned long now = jiffies;
unsigned long dirty, thresh, bg_thresh;
unsigned long m_dirty, m_thresh, m_bg_thresh;
unsigned long m_dirty = 0; /* stop bogus uninit warnings */
unsigned long m_thresh = 0;
unsigned long m_bg_thresh = 0;
/*
* Unstable writes are a feature of certain networked

70
mm/slub.c
View File

@ -1204,7 +1204,7 @@ unsigned long kmem_cache_flags(unsigned long object_size,
return flags;
}
#else
#else /* !CONFIG_SLUB_DEBUG */
static inline void setup_object_debug(struct kmem_cache *s,
struct page *page, void *object) {}
@ -2295,23 +2295,15 @@ static inline void *get_freelist(struct kmem_cache *s, struct page *page)
* And if we were unable to get a new slab from the partial slab lists then
* we need to allocate a new slab. This is the slowest path since it involves
* a call to the page allocator and the setup of a new slab.
*
* Version of __slab_alloc to use when we know that interrupts are
* already disabled (which is the case for bulk allocation).
*/
static void *__slab_alloc(struct kmem_cache *s, gfp_t gfpflags, int node,
static void *___slab_alloc(struct kmem_cache *s, gfp_t gfpflags, int node,
unsigned long addr, struct kmem_cache_cpu *c)
{
void *freelist;
struct page *page;
unsigned long flags;
local_irq_save(flags);
#ifdef CONFIG_PREEMPT
/*
* We may have been preempted and rescheduled on a different
* cpu before disabling interrupts. Need to reload cpu area
* pointer.
*/
c = this_cpu_ptr(s->cpu_slab);
#endif
page = c->page;
if (!page)
@ -2369,7 +2361,6 @@ load_freelist:
VM_BUG_ON(!c->page->frozen);
c->freelist = get_freepointer(s, freelist);
c->tid = next_tid(c->tid);
local_irq_restore(flags);
return freelist;
new_slab:
@ -2386,7 +2377,6 @@ new_slab:
if (unlikely(!freelist)) {
slab_out_of_memory(s, gfpflags, node);
local_irq_restore(flags);
return NULL;
}
@ -2402,10 +2392,34 @@ new_slab:
deactivate_slab(s, page, get_freepointer(s, freelist));
c->page = NULL;
c->freelist = NULL;
local_irq_restore(flags);
return freelist;
}
/*
* Another one that disabled interrupt and compensates for possible
* cpu changes by refetching the per cpu area pointer.
*/
static void *__slab_alloc(struct kmem_cache *s, gfp_t gfpflags, int node,
unsigned long addr, struct kmem_cache_cpu *c)
{
void *p;
unsigned long flags;
local_irq_save(flags);
#ifdef CONFIG_PREEMPT
/*
* We may have been preempted and rescheduled on a different
* cpu before disabling interrupts. Need to reload cpu area
* pointer.
*/
c = this_cpu_ptr(s->cpu_slab);
#endif
p = ___slab_alloc(s, gfpflags, node, addr, c);
local_irq_restore(flags);
return p;
}
/*
* Inlined fastpath so that allocation functions (kmalloc, kmem_cache_alloc)
* have the fastpath folded into their functions. So no function call
@ -2804,30 +2818,23 @@ bool kmem_cache_alloc_bulk(struct kmem_cache *s, gfp_t flags, size_t size,
void *object = c->freelist;
if (unlikely(!object)) {
local_irq_enable();
/*
* Invoking slow path likely have side-effect
* of re-populating per CPU c->freelist
*/
p[i] = __slab_alloc(s, flags, NUMA_NO_NODE,
p[i] = ___slab_alloc(s, flags, NUMA_NO_NODE,
_RET_IP_, c);
if (unlikely(!p[i])) {
__kmem_cache_free_bulk(s, i, p);
return false;
}
local_irq_disable();
if (unlikely(!p[i]))
goto error;
c = this_cpu_ptr(s->cpu_slab);
continue; /* goto for-loop */
}
/* kmem_cache debug support */
s = slab_pre_alloc_hook(s, flags);
if (unlikely(!s)) {
__kmem_cache_free_bulk(s, i, p);
c->tid = next_tid(c->tid);
local_irq_enable();
return false;
}
if (unlikely(!s))
goto error;
c->freelist = get_freepointer(s, object);
p[i] = object;
@ -2847,6 +2854,11 @@ bool kmem_cache_alloc_bulk(struct kmem_cache *s, gfp_t flags, size_t size,
}
return true;
error:
__kmem_cache_free_bulk(s, i, p);
local_irq_enable();
return false;
}
EXPORT_SYMBOL(kmem_cache_alloc_bulk);

5
mm/vmalloc.c
View File

@ -1443,7 +1443,6 @@ struct vm_struct *remove_vm_area(const void *addr)
vmap_debug_free_range(va->va_start, va->va_end);
kasan_free_shadow(vm);
free_unmap_vmap_area(va);
vm->size -= PAGE_SIZE;
return vm;
}
@ -1468,8 +1467,8 @@ static void __vunmap(const void *addr, int deallocate_pages)
return;
}
debug_check_no_locks_freed(addr, area->size);
debug_check_no_obj_freed(addr, area->size);
debug_check_no_locks_freed(addr, get_vm_area_size(area));
debug_check_no_obj_freed(addr, get_vm_area_size(area));
if (deallocate_pages) {
int i;

1
tools/vm/page-types.c
View File

@ -128,6 +128,7 @@ static const char * const page_flag_names[] = {
[KPF_THP] = "t:thp",
[KPF_BALLOON] = "o:balloon",
[KPF_ZERO_PAGE] = "z:zero_page",
[KPF_IDLE] = "i:idle_page",
[KPF_RESERVED] = "r:reserved",
[KPF_MLOCKED] = "m:mlocked",