From: akpm@linux-foundation.org
To: akpm@linux-foundation.org, linux-mm@kvack.org,
mm-commits@vger.kernel.org, richardw.yang@linux.intel.com,
torvalds@linux-foundation.org
Subject: [patch 144/158] mm/madvise.c: use PAGE_ALIGN[ED] for range checking
Date: Sat, 30 Nov 2019 17:57:46 -0800 [thread overview]
Message-ID: <20191201015746.s24EMeDji%akpm@linux-foundation.org> (raw)
From: Wei Yang <richardw.yang@linux.intel.com>
Subject: mm/madvise.c: use PAGE_ALIGN[ED] for range checking
Improve readability, no functional change.
Link: http://lkml.kernel.org/r/20191118032857.22683-1-richardw.yang@linux.intel.com
Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/madvise.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/mm/madvise.c~madvise-use-page_align-for-range-checking
+++ a/mm/madvise.c
@@ -1059,9 +1059,9 @@ SYSCALL_DEFINE3(madvise, unsigned long,
if (!madvise_behavior_valid(behavior))
return error;
- if (start & ~PAGE_MASK)
+ if (!PAGE_ALIGNED(start))
return error;
- len = (len_in + ~PAGE_MASK) & PAGE_MASK;
+ len = PAGE_ALIGN(len_in);
/* Check to see whether len was rounded up from small -ve to zero */
if (len_in && !len)
_
reply other threads:[~2019-12-01 1:57 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20191201015746.s24EMeDji%akpm@linux-foundation.org \
--to=akpm@linux-foundation.org \
--cc=linux-mm@kvack.org \
--cc=mm-commits@vger.kernel.org \
--cc=richardw.yang@linux.intel.com \
--cc=torvalds@linux-foundation.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).