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Message-Id: <1338813642-6476-1-git-send-email-liwp.linux@gmail.com>
Date: Mon, 4 Jun 2012 20:40:42 +0800
From: Wanpeng Li <liwp.linux@...il.com>
To: Fengguang Wu <fengguang.wu@...el.com>,
Alexander Viro <viro@...iv.linux.org.uk>,
Jan Kara <jack@...e.cz>,
Andrew Morton <akpm@...ux-foundation.org>,
Mel Gorman <mgorman@...e.de>,
Minchan Kim <minchan.kim@...il.com>,
"Eric W. Biederman" <ebiederm@...ssion.com>,
David Howells <dhowells@...hat.com>,
James Morris <james.l.morris@...cle.com>,
Ingo Molnar <mingo@...e.hu>
Cc: linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-fsdevel@...r.kernel.org, Wanpeng Li <liwp.linux@...il.com>,
Wanpeng Li <liwp@...ux.vnet.ibm.com>
Subject: [PATCH] remove no longer use of pdflush interface
From: Wanpeng Li <liwp@...ux.vnet.ibm.com>
remove no longer use of pdflush interface nr_pdflush_threads.
Signed-off-by: Wanpeng Li <liwp@...ux.vnet.ibm.com>
---
Documentation/sysctl/vm.txt | 11 -----------
fs/fs-writeback.c | 5 -----
include/linux/writeback.h | 5 -----
kernel/sysctl.c | 7 -------
4 files changed, 28 deletions(-)
diff --git a/Documentation/sysctl/vm.txt b/Documentation/sysctl/vm.txt
index 96f0ee8..71c17d2 100644
--- a/Documentation/sysctl/vm.txt
+++ b/Documentation/sysctl/vm.txt
@@ -42,7 +42,6 @@ Currently, these files are in /proc/sys/vm:
- mmap_min_addr
- nr_hugepages
- nr_overcommit_hugepages
-- nr_pdflush_threads
- nr_trim_pages (only if CONFIG_MMU=n)
- numa_zonelist_order
- oom_dump_tasks
@@ -426,16 +425,6 @@ See Documentation/vm/hugetlbpage.txt
==============================================================
-nr_pdflush_threads
-
-The current number of pdflush threads. This value is read-only.
-The value changes according to the number of dirty pages in the system.
-
-When necessary, additional pdflush threads are created, one per second, up to
-nr_pdflush_threads_max.
-
-==============================================================
-
nr_trim_pages
This is available only on NOMMU kernels.
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 539f36c..30ddb8a 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -52,11 +52,6 @@ struct wb_writeback_work {
struct completion *done; /* set if the caller waits */
};
-/*
- * We don't actually have pdflush, but this one is exported though /proc...
- */
-int nr_pdflush_threads;
-
/**
* writeback_in_progress - determine whether there is writeback in progress
* @bdi: the device's backing_dev_info structure.
diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index a2b84f5..13b5df7 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -193,9 +193,4 @@ void tag_pages_for_writeback(struct address_space *mapping,
void account_page_redirty(struct page *page);
-/* pdflush.c */
-extern int nr_pdflush_threads; /* Global so it can be exported to sysctl
- read-only. */
-
-
#endif /* WRITEBACK_H */
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 4ab1187..e257b61 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1095,13 +1095,6 @@ static struct ctl_table vm_table[] = {
.extra1 = &zero,
},
{
- .procname = "nr_pdflush_threads",
- .data = &nr_pdflush_threads,
- .maxlen = sizeof nr_pdflush_threads,
- .mode = 0444 /* read-only*/,
- .proc_handler = proc_dointvec,
- },
- {
.procname = "swappiness",
.data = &vm_swappiness,
.maxlen = sizeof(vm_swappiness),
--
1.7.9.5
--
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