mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

mm/mprotect.c: avoid repeated assignment in do_mprotect_pkey() 

After adjustment, the repeated assignment of "prev" is avoided, and the
readability of the code is improved.

Link: https://lkml.kernel.org/r/20211012152444.4127-1-fishland@aliyun.com
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Liu Song <liu.song11@zte.com.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Liu Song 2021-11-05 13:39:03 -07:00 committed by Linus Torvalds
parent e26e0cc30b
commit 6af5fa0dc7
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
mm/mprotect.c
View File

@ -563,7 +563,7 @@ static int do_mprotect_pkey(unsigned long start, size_t len,
error = -ENOMEM;
if (!vma)
goto out;
prev = vma->vm_prev;
if (unlikely(grows & PROT_GROWSDOWN)) {
if (vma->vm_start >= end)
goto out;
@ -581,8 +581,11 @@ static int do_mprotect_pkey(unsigned long start, size_t len,
goto out;
}
}
if (start > vma->vm_start)
prev = vma;
else
prev = vma->vm_prev;
for (nstart = start ; ; ) {
unsigned long mask_off_old_flags;