The patch titled
NOMMU: Use find_vma() rather than reimplementing a VMA search
has been added to the -mm tree. Its filename is
nommu-use-find_vma-rather-than-reimplementing-a-vma-search.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: NOMMU: Use find_vma() rather than reimplementing a VMA search
From: David Howells <dhowells@xxxxxxxxxx>
Use find_vma() in the NOMMU version of access_process_vm() rather than
reimplementing it.
Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
mm/nommu.c | 11 +++--------
1 files changed, 3 insertions(+), 8 deletions(-)
diff -puN mm/nommu.c~nommu-use-find_vma-rather-than-reimplementing-a-vma-search mm/nommu.c
--- a/mm/nommu.c~nommu-use-find_vma-rather-than-reimplementing-a-vma-search
+++ a/mm/nommu.c
@@ -1039,6 +1039,7 @@ unsigned long do_mremap(unsigned long ad
/*
* Look up the first VMA which satisfies addr < vm_end, NULL if none
+ * - should be called with mm->mmap_sem at least readlocked
*/
struct vm_area_struct *find_vma(struct mm_struct *mm, unsigned long addr)
{
@@ -1213,7 +1214,6 @@ struct page *filemap_nopage(struct vm_ar
*/
int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, int len, int write)
{
- struct vm_list_struct *vml;
struct vm_area_struct *vma;
struct mm_struct *mm;
@@ -1227,13 +1227,8 @@ int access_process_vm(struct task_struct
down_read(&mm->mmap_sem);
/* the access must start within one of the target process's mappings */
- for (vml = mm->context.vmlist; vml; vml = vml->next)
- if (addr >= vml->vma->vm_start && addr < vml->vma->vm_end)
- break;
-
- if (vml) {
- vma = vml->vma;
-
+ vma = find_vma(mm, addr);
+ if (vma) {
/* don't overrun this mapping */
if (addr + len >= vma->vm_end)
len = vma->vm_end - addr;
_
Patches currently in -mm which might be from dhowells@xxxxxxxxxx are
git-block.patch
git-block-fat-build-fix.patch
block-move-extern-declarations-out-of-fs-c-into-header-files-tidy.patch
block-make-it-possible-to-disable-the-block-layer-tidy.patch
git-gfs2.patch
git-nfs.patch
nfs-replace-null-dentries-that-appear-in-readdirs-list-2.patch
binfmt_elf-consistently-use-loff_t.patch
afs-add-lock-annotations-to-afs_proc_cell_servers_startstop.patch
elf_fdpic_core_dump-dont-take-tasklist_lock.patch
simplify-update_times-avoid-jiffies-jiffies_64-aliasing-problem-2.patch
lib-rwsemc-un-inline-rwsem_down_failed_common.patch
nommu-check-that-access_process_vm-has-a-valid-target.patch
nommu-set-bdi-capabilities-for-dev-mem-and-dev-kmem.patch
nommu-set-bdi-capabilities-for-dev-mem-and-dev-kmem-tidy.patch
nommu-use-find_vma-rather-than-reimplementing-a-vma-search.patch
reiserfs-make-sure-all-dentries-refs-are-released-before-calling-kill_block_super-try-2.patch
fs-cache-provide-a-filesystem-specific-syncable-page-bit.patch
fs-cache-generic-filesystem-caching-facility.patch
fs-cache-release-page-private-in-failed-readahead.patch
fs-cache-release-page-private-after-failed-readahead-12.patch
fs-cache-make-kafs-use-fs-cache.patch
fs-cache-make-kafs-use-fs-cache-fix.patch
fs-cache-make-kafs-use-fs-cache-12.patch
fs-cache-make-kafs-use-fs-cache-12-fix.patch
fs-cache-make-kafs-use-fs-cache-vs-streamline-generic_file_-interfaces-and-filemap.patch
nfs-use-local-caching.patch
nfs-use-local-caching-12.patch
nfs-use-local-caching-12-fix.patch
fs-cache-cachefiles-ia64-missing-copy_page-export.patch
fs-cache-cachefiles-a-cache-that-backs-onto-a-mounted-filesystem.patch
fs-cache-cachefiles-a-cache-that-backs-onto-a-mounted-filesystem-cachefiles-printk-format-warning.patch
fs-cache-cachefiles-a-cache-that-backs-onto-a-mounted-filesystem-warning-fixes.patch
autofs-make-sure-all-dentries-refs-are-released-before-calling-kill_anon_super.patch
vfs-destroy-the-dentries-contributed-by-a-superblock-on-unmounting.patch
vfs-make-filldir_t-and-struct-kstat-deal-in-64-bit-inode-numbers.patch
vfs-make-filldir_t-and-struct-kstat-deal-in-64-bit-inode-numbers-alpha-fix.patch
nfs-represent-64-bit-fileids-as-64-bit-inode-numbers-on-32-bit-systems.patch
ecryptfs-get_sb_dev-fix.patch
introduce-kernel_execve.patch
rename-the-provided-execve-functions-to-kernel_execve.patch
provide-kernel_execve-on-all-architectures.patch
provide-kernel_execve-on-all-architectures-fix.patch
remove-the-use-of-_syscallx-macros-in-uml.patch
sh64-remove-the-use-of-kernel-syscalls.patch
remove-remaining-errno-and-__kernel_syscalls__-references.patch
reiser4-get_sb_dev-fix.patch
mutex-subsystem-synchro-test-module.patch
-
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