From: Andrew Morton <akpm@linux-foundation.org>
To: Chen Gang <gang.chen@asianux.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>, Mel Gorman <mgorman@suse.de>,
rientjes@google.com, sasha.levin@oracle.com,
linux@rasmusvillemoes.dk, kosaki.motohiro@jp.fujitsu.com,
Wu Fengguang <fengguang.wu@intel.com>,
lczerner@redhat.com, linux-mm@kvack.org
Subject: Re: [PATCH] mm: readahead: return the value which force_page_cache_readahead() returns
Date: Tue, 20 Aug 2013 16:16:39 -0700 [thread overview]
Message-ID: <20130820161639.69ffa65b40c5cf761bbb727c@linux-foundation.org> (raw)
In-Reply-To: <5212E328.40804@asianux.com>
On Tue, 20 Aug 2013 11:31:52 +0800 Chen Gang <gang.chen@asianux.com> wrote:
> force_page_cache_readahead() may fail, so need let the related upper
> system calls know about it by its return value.
>
> Also let related code pass "scripts/checkpatch.pl's" checking.
>
> --- a/mm/fadvise.c
> +++ b/mm/fadvise.c
> @@ -107,8 +107,8 @@ SYSCALL_DEFINE4(fadvise64_64, int, fd, loff_t, offset, loff_t, len, int, advice)
> * Ignore return value because fadvise() shall return
> * success even if filesystem can't retrieve a hint,
> */
^^ look.
> - force_page_cache_readahead(mapping, f.file, start_index,
> - nrpages);
> + ret = force_page_cache_readahead(mapping, f.file, start_index,
> + nrpages);
> break;
--
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next prev parent reply other threads:[~2013-08-20 23:16 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-20 3:31 Chen Gang
2013-08-20 23:16 ` Andrew Morton [this message]
2013-08-21 2:29 ` Chen Gang
2013-08-21 2:41 ` [PATCH v2] m: " Chen Gang
2013-09-03 5:27 ` Chen Gang
2013-09-17 22:56 ` Andrew Morton
2013-09-18 1:59 ` Chen Gang
2013-10-15 8:06 ` [PATCH] mm/readahead.c: need always return 0 when system call readahead() succeeds Chen Gang
2013-10-15 12:12 ` [PATCH] mm/madvise.c: return 0 instead of read bytes after force_page_cache_readahead() succeeds Chen Gang
2013-10-16 23:06 ` [PATCH] mm/readahead.c: need always return 0 when system call readahead() succeeds David Rientjes
2013-10-17 0:57 ` Chen Gang
2013-10-17 1:17 ` David Rientjes
2013-10-17 1:32 ` Chen Gang
2013-10-17 2:21 ` David Rientjes
2013-10-17 2:37 ` Chen Gang
2013-10-17 2:40 ` Chen Gang
2013-10-15 8:20 ` [PATCH v2] m: readahead: return the value which force_page_cache_readahead() returns Chen Gang
2013-10-17 9:56 ` Chen Gang
2013-11-04 5:31 ` [PATCH v3] mm: readahead: check return " Chen Gang
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