The patch titled
Subject: proc: use mm_access() instead of ptrace_may_access()
has been removed from the -mm tree. Its filename was
proc-use-mm_access-instead-of-ptrace_may_access.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
From: Cong Wang <xiyou.wangcong@xxxxxxxxx>
Subject: proc: use mm_access() instead of ptrace_may_access()
mm_access() handles this much better, and avoids some race conditions.
Signed-off-by: Cong Wang <xiyou.wangcong@xxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/proc/base.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff -puN fs/proc/base.c~proc-use-mm_access-instead-of-ptrace_may_access fs/proc/base.c
--- a/fs/proc/base.c~proc-use-mm_access-instead-of-ptrace_may_access
+++ a/fs/proc/base.c
@@ -2022,11 +2022,8 @@ static int map_files_d_revalidate(struct
if (!task)
goto out_notask;
- if (!ptrace_may_access(task, PTRACE_MODE_READ))
- goto out;
-
- mm = get_task_mm(task);
- if (!mm)
+ mm = mm_access(task, PTRACE_MODE_READ);
+ if (IS_ERR_OR_NULL(mm))
goto out;
if (!dname_to_vma_addr(dentry, &vm_start, &vm_end)) {
_
Patches currently in -mm which might be from xiyou.wangcong@xxxxxxxxx are
origin.patch
linux-next.patch
shmem-replace_page-must-flush_dcache-and-others.patch
fs-move-file_remove_suid-to-fs-inodec.patch
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