From: Wu Fengguang <fengguang.wu@intel.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Jens Axboe <jens.axboe@oracle.com>,
Wu Fengguang <fengguang.wu@intel.com>
Cc: Chris Mason <chris.mason@oracle.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Clemens Ladisch <clemens@ladisch.de>
Cc: Olivier Galibert <galibert@pobox.com>
Cc: Linux Memory Management List <linux-mm@kvack.org>
Cc: <linux-fsdevel@vger.kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH 04/11] readahead: introduce {MAX|MIN}_READAHEAD_PAGES macros for ease of use
Date: Sun, 07 Feb 2010 12:10:17 +0800 [thread overview]
Message-ID: <20100207041043.286260529@intel.com> (raw)
In-Reply-To: 20100207041013.891441102@intel.com
[-- Attachment #1: readahead-min-max-pages.patch --]
[-- Type: text/plain, Size: 2309 bytes --]
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
block/blk-core.c | 3 +--
fs/fuse/inode.c | 2 +-
include/linux/mm.h | 3 +++
mm/backing-dev.c | 2 +-
4 files changed, 6 insertions(+), 4 deletions(-)
--- linux.orig/block/blk-core.c 2010-01-30 17:38:48.000000000 +0800
+++ linux/block/blk-core.c 2010-01-30 18:10:01.000000000 +0800
@@ -498,8 +498,7 @@ struct request_queue *blk_alloc_queue_no
q->backing_dev_info.unplug_io_fn = blk_backing_dev_unplug;
q->backing_dev_info.unplug_io_data = q;
- q->backing_dev_info.ra_pages =
- (VM_MAX_READAHEAD * 1024) / PAGE_CACHE_SIZE;
+ q->backing_dev_info.ra_pages = MAX_READAHEAD_PAGES;
q->backing_dev_info.state = 0;
q->backing_dev_info.capabilities = BDI_CAP_MAP_COPY;
q->backing_dev_info.name = "block";
--- linux.orig/fs/fuse/inode.c 2010-01-30 17:38:48.000000000 +0800
+++ linux/fs/fuse/inode.c 2010-01-30 18:10:01.000000000 +0800
@@ -870,7 +870,7 @@ static int fuse_bdi_init(struct fuse_con
int err;
fc->bdi.name = "fuse";
- fc->bdi.ra_pages = (VM_MAX_READAHEAD * 1024) / PAGE_CACHE_SIZE;
+ fc->bdi.ra_pages = MAX_READAHEAD_PAGES;
fc->bdi.unplug_io_fn = default_unplug_io_fn;
/* fuse does it's own writeback accounting */
fc->bdi.capabilities = BDI_CAP_NO_ACCT_WB;
--- linux.orig/include/linux/mm.h 2010-01-30 18:09:58.000000000 +0800
+++ linux/include/linux/mm.h 2010-01-30 18:10:01.000000000 +0800
@@ -1187,6 +1187,9 @@ void task_dirty_inc(struct task_struct *
#define VM_MAX_READAHEAD 512 /* kbytes */
#define VM_MIN_READAHEAD 32 /* kbytes (includes current page) */
+#define MAX_READAHEAD_PAGES (VM_MAX_READAHEAD*1024 / PAGE_CACHE_SIZE)
+#define MIN_READAHEAD_PAGES DIV_ROUND_UP(VM_MIN_READAHEAD*1024, PAGE_CACHE_SIZE)
+
int force_page_cache_readahead(struct address_space *mapping, struct file *filp,
pgoff_t offset, unsigned long nr_to_read);
--- linux.orig/mm/backing-dev.c 2010-01-30 17:38:48.000000000 +0800
+++ linux/mm/backing-dev.c 2010-01-30 18:10:01.000000000 +0800
@@ -18,7 +18,7 @@ EXPORT_SYMBOL(default_unplug_io_fn);
struct backing_dev_info default_backing_dev_info = {
.name = "default",
- .ra_pages = VM_MAX_READAHEAD * 1024 / PAGE_CACHE_SIZE,
+ .ra_pages = MAX_READAHEAD_PAGES,
.state = 0,
.capabilities = BDI_CAP_MAP_COPY,
.unplug_io_fn = default_unplug_io_fn,
WARNING: multiple messages have this Message-ID (diff)
From: Wu Fengguang <fengguang.wu@intel.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Jens Axboe <jens.axboe@oracle.com>,
Wu Fengguang <fengguang.wu@intel.com>
Cc: Chris Mason <chris.mason@oracle.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Clemens Ladisch <clemens@ladisch.de>
Cc: Olivier Galibert <galibert@pobox.com>
Cc: Linux Memory Management List <linux-mm@kvack.org>
Cc: <linux-fsdevel@vger.kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH 04/11] readahead: introduce {MAX|MIN}_READAHEAD_PAGES macros for ease of use
Date: Sun, 07 Feb 2010 12:10:17 +0800 [thread overview]
Message-ID: <20100207041043.286260529@intel.com> (raw)
In-Reply-To: 20100207041013.891441102@intel.com
[-- Attachment #1: readahead-min-max-pages.patch --]
[-- Type: text/plain, Size: 2534 bytes --]
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
block/blk-core.c | 3 +--
fs/fuse/inode.c | 2 +-
include/linux/mm.h | 3 +++
mm/backing-dev.c | 2 +-
4 files changed, 6 insertions(+), 4 deletions(-)
--- linux.orig/block/blk-core.c 2010-01-30 17:38:48.000000000 +0800
+++ linux/block/blk-core.c 2010-01-30 18:10:01.000000000 +0800
@@ -498,8 +498,7 @@ struct request_queue *blk_alloc_queue_no
q->backing_dev_info.unplug_io_fn = blk_backing_dev_unplug;
q->backing_dev_info.unplug_io_data = q;
- q->backing_dev_info.ra_pages =
- (VM_MAX_READAHEAD * 1024) / PAGE_CACHE_SIZE;
+ q->backing_dev_info.ra_pages = MAX_READAHEAD_PAGES;
q->backing_dev_info.state = 0;
q->backing_dev_info.capabilities = BDI_CAP_MAP_COPY;
q->backing_dev_info.name = "block";
--- linux.orig/fs/fuse/inode.c 2010-01-30 17:38:48.000000000 +0800
+++ linux/fs/fuse/inode.c 2010-01-30 18:10:01.000000000 +0800
@@ -870,7 +870,7 @@ static int fuse_bdi_init(struct fuse_con
int err;
fc->bdi.name = "fuse";
- fc->bdi.ra_pages = (VM_MAX_READAHEAD * 1024) / PAGE_CACHE_SIZE;
+ fc->bdi.ra_pages = MAX_READAHEAD_PAGES;
fc->bdi.unplug_io_fn = default_unplug_io_fn;
/* fuse does it's own writeback accounting */
fc->bdi.capabilities = BDI_CAP_NO_ACCT_WB;
--- linux.orig/include/linux/mm.h 2010-01-30 18:09:58.000000000 +0800
+++ linux/include/linux/mm.h 2010-01-30 18:10:01.000000000 +0800
@@ -1187,6 +1187,9 @@ void task_dirty_inc(struct task_struct *
#define VM_MAX_READAHEAD 512 /* kbytes */
#define VM_MIN_READAHEAD 32 /* kbytes (includes current page) */
+#define MAX_READAHEAD_PAGES (VM_MAX_READAHEAD*1024 / PAGE_CACHE_SIZE)
+#define MIN_READAHEAD_PAGES DIV_ROUND_UP(VM_MIN_READAHEAD*1024, PAGE_CACHE_SIZE)
+
int force_page_cache_readahead(struct address_space *mapping, struct file *filp,
pgoff_t offset, unsigned long nr_to_read);
--- linux.orig/mm/backing-dev.c 2010-01-30 17:38:48.000000000 +0800
+++ linux/mm/backing-dev.c 2010-01-30 18:10:01.000000000 +0800
@@ -18,7 +18,7 @@ EXPORT_SYMBOL(default_unplug_io_fn);
struct backing_dev_info default_backing_dev_info = {
.name = "default",
- .ra_pages = VM_MAX_READAHEAD * 1024 / PAGE_CACHE_SIZE,
+ .ra_pages = MAX_READAHEAD_PAGES,
.state = 0,
.capabilities = BDI_CAP_MAP_COPY,
.unplug_io_fn = default_unplug_io_fn,
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
WARNING: multiple messages have this Message-ID (diff)
From: Wu Fengguang <fengguang.wu@intel.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Jens Axboe <jens.axboe@oracle.com>,
Wu Fengguang <fengguang.wu@intel.com>,
Chris Mason <chris.mason@oracle.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Clemens Ladisch <clemens@ladisch.de>,
Olivier Galibert <galibert@pobox.com>,
Linux Memory Management List <linux-mm@kvack.org>,
linux-fsdevel@vger.kernel.org,
LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH 04/11] readahead: introduce {MAX|MIN}_READAHEAD_PAGES macros for ease of use
Date: Sun, 07 Feb 2010 12:10:17 +0800 [thread overview]
Message-ID: <20100207041043.286260529@intel.com> (raw)
In-Reply-To: 20100207041013.891441102@intel.com
[-- Attachment #1: readahead-min-max-pages.patch --]
[-- Type: text/plain, Size: 2534 bytes --]
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
block/blk-core.c | 3 +--
fs/fuse/inode.c | 2 +-
include/linux/mm.h | 3 +++
mm/backing-dev.c | 2 +-
4 files changed, 6 insertions(+), 4 deletions(-)
--- linux.orig/block/blk-core.c 2010-01-30 17:38:48.000000000 +0800
+++ linux/block/blk-core.c 2010-01-30 18:10:01.000000000 +0800
@@ -498,8 +498,7 @@ struct request_queue *blk_alloc_queue_no
q->backing_dev_info.unplug_io_fn = blk_backing_dev_unplug;
q->backing_dev_info.unplug_io_data = q;
- q->backing_dev_info.ra_pages =
- (VM_MAX_READAHEAD * 1024) / PAGE_CACHE_SIZE;
+ q->backing_dev_info.ra_pages = MAX_READAHEAD_PAGES;
q->backing_dev_info.state = 0;
q->backing_dev_info.capabilities = BDI_CAP_MAP_COPY;
q->backing_dev_info.name = "block";
--- linux.orig/fs/fuse/inode.c 2010-01-30 17:38:48.000000000 +0800
+++ linux/fs/fuse/inode.c 2010-01-30 18:10:01.000000000 +0800
@@ -870,7 +870,7 @@ static int fuse_bdi_init(struct fuse_con
int err;
fc->bdi.name = "fuse";
- fc->bdi.ra_pages = (VM_MAX_READAHEAD * 1024) / PAGE_CACHE_SIZE;
+ fc->bdi.ra_pages = MAX_READAHEAD_PAGES;
fc->bdi.unplug_io_fn = default_unplug_io_fn;
/* fuse does it's own writeback accounting */
fc->bdi.capabilities = BDI_CAP_NO_ACCT_WB;
--- linux.orig/include/linux/mm.h 2010-01-30 18:09:58.000000000 +0800
+++ linux/include/linux/mm.h 2010-01-30 18:10:01.000000000 +0800
@@ -1187,6 +1187,9 @@ void task_dirty_inc(struct task_struct *
#define VM_MAX_READAHEAD 512 /* kbytes */
#define VM_MIN_READAHEAD 32 /* kbytes (includes current page) */
+#define MAX_READAHEAD_PAGES (VM_MAX_READAHEAD*1024 / PAGE_CACHE_SIZE)
+#define MIN_READAHEAD_PAGES DIV_ROUND_UP(VM_MIN_READAHEAD*1024, PAGE_CACHE_SIZE)
+
int force_page_cache_readahead(struct address_space *mapping, struct file *filp,
pgoff_t offset, unsigned long nr_to_read);
--- linux.orig/mm/backing-dev.c 2010-01-30 17:38:48.000000000 +0800
+++ linux/mm/backing-dev.c 2010-01-30 18:10:01.000000000 +0800
@@ -18,7 +18,7 @@ EXPORT_SYMBOL(default_unplug_io_fn);
struct backing_dev_info default_backing_dev_info = {
.name = "default",
- .ra_pages = VM_MAX_READAHEAD * 1024 / PAGE_CACHE_SIZE,
+ .ra_pages = MAX_READAHEAD_PAGES,
.state = 0,
.capabilities = BDI_CAP_MAP_COPY,
.unplug_io_fn = default_unplug_io_fn,
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2010-02-07 4:14 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-07 4:10 [PATCH 00/11] 512K readahead size with thrashing safe readahead Wu Fengguang
2010-02-07 4:10 ` Wu Fengguang
2010-02-07 4:10 ` Wu Fengguang
2010-02-07 4:10 ` [PATCH 01/11] readahead: limit readahead size for small devices Wu Fengguang
2010-02-07 4:10 ` Wu Fengguang
2010-02-07 4:10 ` Wu Fengguang
2010-02-07 4:10 ` [PATCH 02/11] readahead: retain inactive lru pages to be accessed soon Wu Fengguang
2010-02-07 4:10 ` Wu Fengguang
2010-02-07 4:10 ` Wu Fengguang
2010-02-07 4:10 ` [PATCH 03/11] readahead: bump up the default readahead size Wu Fengguang
2010-02-07 4:10 ` Wu Fengguang
2010-02-07 4:10 ` Wu Fengguang
2010-02-08 7:20 ` Christian Ehrhardt
2010-02-08 7:20 ` Christian Ehrhardt
2010-02-08 7:20 ` Christian Ehrhardt
2010-02-08 13:46 ` Wu Fengguang
2010-02-08 13:46 ` Wu Fengguang
2010-02-08 13:46 ` Wu Fengguang
2010-02-08 13:46 ` Wu Fengguang
2010-02-11 21:37 ` Matt Mackall
2010-02-11 21:37 ` Matt Mackall
2010-02-11 23:42 ` Jamie Lokier
2010-02-11 23:42 ` Jamie Lokier
2010-02-12 0:04 ` Matt Mackall
2010-02-12 0:04 ` Matt Mackall
2010-02-12 13:59 ` Wu Fengguang
2010-02-12 13:59 ` Wu Fengguang
2010-02-12 20:20 ` Matt Mackall
2010-02-12 20:20 ` Matt Mackall
2010-02-21 2:25 ` Wu Fengguang
2010-02-21 2:25 ` Wu Fengguang
2010-02-07 4:10 ` Wu Fengguang [this message]
2010-02-07 4:10 ` [PATCH 04/11] readahead: introduce {MAX|MIN}_READAHEAD_PAGES macros for ease of use Wu Fengguang
2010-02-07 4:10 ` Wu Fengguang
2010-02-07 4:10 ` [PATCH 05/11] readahead: replace ra->mmap_miss with ra->ra_flags Wu Fengguang
2010-02-07 4:10 ` Wu Fengguang
2010-02-08 8:19 ` Nick Piggin
2010-02-08 8:19 ` Nick Piggin
2010-02-08 13:43 ` Wu Fengguang
2010-02-08 13:43 ` Wu Fengguang
2010-02-07 4:10 ` [PATCH 06/11] readahead: thrashing safe context readahead Wu Fengguang
2010-02-07 4:10 ` Wu Fengguang
2010-02-07 4:10 ` Wu Fengguang
2010-02-07 4:10 ` [PATCH 07/11] readahead: record readahead patterns Wu Fengguang
2010-02-07 4:10 ` Wu Fengguang
2010-02-07 4:10 ` Wu Fengguang
2010-02-07 4:10 ` [PATCH 08/11] readahead: add tracing event Wu Fengguang
2010-02-07 4:10 ` Wu Fengguang
2010-02-07 4:10 ` Wu Fengguang
2010-02-07 4:10 ` [PATCH 09/11] readahead: add /debug/readahead/stats Wu Fengguang
2010-02-07 4:10 ` Wu Fengguang
2010-02-07 4:10 ` [PATCH 10/11] readahead: dont do start-of-file readahead after lseek() Wu Fengguang
2010-02-07 4:10 ` Wu Fengguang
2010-02-07 4:10 ` Wu Fengguang
2010-02-07 4:10 ` [PATCH 11/11] radixtree: speed up next/prev hole search Wu Fengguang
2010-02-07 4:10 ` Wu Fengguang
2010-02-07 4:10 ` Wu Fengguang
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=20100207041043.286260529@intel.com \
--to=fengguang.wu@intel.com \
--cc=akpm@linux-foundation.org \
--cc=jens.axboe@oracle.com \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.