Skip to main content

Browse the archive

Revision a247c3a97a0216b18a46243eda26081f1928ec37 authored by Andrea Arcangeli on 22 September 2010, 20:05:12 UTC, committed by Linus Torvalds on 23 September 2010, 00:22:39 UTC 
rmap: fix walk during fork
 
The below bug in fork led to the rmap walk finding the parent huge-pmd
twice instead of just once, because the anon_vma_chain objects of the
child vma still point to the vma->vm_mm of the parent.

The patch fixes it by making the rmap walk accurate during fork.  It's not
a big deal normally but it worth being accurate considering the cost is
the same.

Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Johannes Weiner <jweiner@redhat.com>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent df08cdc
Raw File
dns_resolve.h 
/*
 * Resolve DNS hostnames into valid ip addresses
 */
#ifndef __LINUX_FS_NFS_DNS_RESOLVE_H
#define __LINUX_FS_NFS_DNS_RESOLVE_H

#define NFS_DNS_HOSTNAME_MAXLEN	(128)


#ifdef CONFIG_NFS_USE_KERNEL_DNS
static inline int nfs_dns_resolver_init(void)
{
	return 0;
}

static inline void nfs_dns_resolver_destroy(void)
{}
#else
extern int nfs_dns_resolver_init(void);
extern void nfs_dns_resolver_destroy(void);
#endif

extern ssize_t nfs_dns_resolve_name(char *name, size_t namelen,
		struct sockaddr *sa, size_t salen);

#endif
back to top