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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Browse source 
Pull VFS updates from Al Viro,

Misc cleanups all over the place, mainly wrt /proc interfaces (switch
create_proc_entry to proc_create(), get rid of the deprecated
create_proc_read_entry() in favor of using proc_create_data() and
seq_file etc).

7kloc removed.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (204 commits)
  don't bother with deferred freeing of fdtables
  proc: Move non-public stuff from linux/proc_fs.h to fs/proc/internal.h
  proc: Make the PROC_I() and PDE() macros internal to procfs
  proc: Supply a function to remove a proc entry by PDE
  take cgroup_open() and cpuset_open() to fs/proc/base.c
  ppc: Clean up scanlog
  ppc: Clean up rtas_flash driver somewhat
  hostap: proc: Use remove_proc_subtree()
  drm: proc: Use remove_proc_subtree()
  drm: proc: Use minor->index to label things, not PDE->name
  drm: Constify drm_proc_list[]
  zoran: Don't print proc_dir_entry data in debug
  reiserfs: Don't access the proc_dir_entry in r_open(), r_start() r_show()
  proc: Supply an accessor for getting the data from a PDE's parent
  airo: Use remove_proc_subtree()
  rtl8192u: Don't need to save device proc dir PDE
  rtl8187se: Use a dir under /proc/net/r8180/
  proc: Add proc_mkdir_data()
  proc: Move some bits from linux/proc_fs.h to linux/{of.h,signal.h,tty.h}
  proc: Move PDE_NET() to fs/proc/proc_net.c
  ...
This commit is contained in:
Linus Torvalds 2013-05-01 17:51:54 -07:00
commit 20b4fb4852
385 changed files with 7396 additions and 14540 deletions
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45
mm/vmalloc.c
View file

@ -27,10 +27,30 @@
#include <linux/pfn.h>
#include <linux/kmemleak.h>
#include <linux/atomic.h>
#include <linux/llist.h>
#include <asm/uaccess.h>
#include <asm/tlbflush.h>
#include <asm/shmparam.h>
struct vfree_deferred {
struct llist_head list;
struct work_struct wq;
};
static DEFINE_PER_CPU(struct vfree_deferred, vfree_deferred);
static void __vunmap(const void *, int);
static void free_work(struct work_struct *w)
{
struct vfree_deferred *p = container_of(w, struct vfree_deferred, wq);
struct llist_node *llnode = llist_del_all(&p->list);
while (llnode) {
void *p = llnode;
llnode = llist_next(llnode);
__vunmap(p, 1);
}
}
/*** Page table manipulation functions ***/
static void vunmap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end)
@ -1175,10 +1195,14 @@ void __init vmalloc_init(void)
for_each_possible_cpu(i) {
struct vmap_block_queue *vbq;
struct vfree_deferred *p;
vbq = &per_cpu(vmap_block_queue, i);
spin_lock_init(&vbq->lock);
INIT_LIST_HEAD(&vbq->free);
p = &per_cpu(vfree_deferred, i);
init_llist_head(&p->list);
INIT_WORK(&p->wq, free_work);
}
/* Import existing vmlist entries. */
@ -1486,7 +1510,7 @@ static void __vunmap(const void *addr, int deallocate_pages)
kfree(area);
return;
}
/**
* vfree - release memory allocated by vmalloc()
* @addr: memory base address
@ -1495,15 +1519,25 @@ static void __vunmap(const void *addr, int deallocate_pages)
* obtained from vmalloc(), vmalloc_32() or __vmalloc(). If @addr is
* NULL, no operation is performed.
*
* Must not be called in interrupt context.
* Must not be called in NMI context (strictly speaking, only if we don't
* have CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG, but making the calling
* conventions for vfree() arch-depenedent would be a really bad idea)
*
*/
void vfree(const void *addr)
{
BUG_ON(in_interrupt());
BUG_ON(in_nmi());
kmemleak_free(addr);
__vunmap(addr, 1);
if (!addr)
return;
if (unlikely(in_interrupt())) {
struct vfree_deferred *p = &__get_cpu_var(vfree_deferred);
llist_add((struct llist_node *)addr, &p->list);
schedule_work(&p->wq);
} else
__vunmap(addr, 1);
}
EXPORT_SYMBOL(vfree);
@ -1520,7 +1554,8 @@ void vunmap(const void *addr)
{
BUG_ON(in_interrupt());
might_sleep();
__vunmap(addr, 0);
if (addr)
__vunmap(addr, 0);
}
EXPORT_SYMBOL(vunmap);