From: Fengguang Wu <wfg@mail.ustc.edu.cn>
To: Jens Axboe <axboe@suse.de>
Cc: linux-kernel@vger.kernel.org, Andrew Morton <akpm@osdl.org>,
Nick Piggin <nickpiggin@yahoo.com.au>,
Lubos Lunak <l.lunak@suse.cz>,
Wu Fengguang <wfg@mail.ustc.edu.cn>
Subject: [PATCH 4/7] iosched: submit READA requests on possible readahead code path
Date: Sat, 24 Jun 2006 16:20:10 +0800 [thread overview]
Message-ID: <351137382.24594@ustc.edu.cn> (raw)
Message-ID: <20060624082311.501730089@localhost.localdomain> (raw)
In-Reply-To: 20060624082006.574472632@localhost.localdomain
[-- Attachment #1: iosched-submit-reada-on-possible-readahead-path.patch --]
[-- Type: text/plain, Size: 2119 bytes --]
Change the request type from READ to READA in possible readahead code paths.
- call mpage_bio_submit(READA) in mpage_readpages()
- call submit_bio(READA) in swap_readpage()
Signed-off-by: Wu Fengguang <wfg@mail.ustc.edu.cn>
---
fs/mpage.c | 12 ++++++------
1 files changed, 6 insertions(+), 6 deletions(-)
--- linux-2.6.17-mm1.orig/fs/mpage.c
+++ linux-2.6.17-mm1/fs/mpage.c
@@ -302,7 +302,7 @@ do_mpage_readpage(struct bio *bio, struc
* This page will go to BIO. Do we need to send this BIO off first?
*/
if (bio && (*last_block_in_bio != blocks[0] - 1))
- bio = mpage_bio_submit(READ, bio);
+ bio = mpage_bio_submit(READA, bio);
alloc_new:
if (bio == NULL) {
@@ -315,12 +315,12 @@ alloc_new:
length = first_hole << blkbits;
if (bio_add_page(bio, page, length, 0) < length) {
- bio = mpage_bio_submit(READ, bio);
+ bio = mpage_bio_submit(READA, bio);
goto alloc_new;
}
if (buffer_boundary(map_bh) || (first_hole != blocks_per_page))
- bio = mpage_bio_submit(READ, bio);
+ bio = mpage_bio_submit(READA, bio);
else
*last_block_in_bio = blocks[blocks_per_page - 1];
out:
@@ -328,7 +328,7 @@ out:
confused:
if (bio)
- bio = mpage_bio_submit(READ, bio);
+ bio = mpage_bio_submit(READA, bio);
if (!PageUptodate(page))
block_read_full_page(page, get_block);
else
@@ -418,7 +418,7 @@ mpage_readpages(struct address_space *ma
pagevec_lru_add(&lru_pvec);
BUG_ON(!list_empty(pages));
if (bio)
- mpage_bio_submit(READ, bio);
+ mpage_bio_submit(READA, bio);
return 0;
}
EXPORT_SYMBOL(mpage_readpages);
@@ -437,7 +437,7 @@ int mpage_readpage(struct page *page, ge
bio = do_mpage_readpage(bio, page, 1, &last_block_in_bio,
&map_bh, &first_logical_block, get_block);
if (bio)
- mpage_bio_submit(READ, bio);
+ mpage_bio_submit(READA, bio);
return 0;
}
EXPORT_SYMBOL(mpage_readpage);
--- linux-2.6.17-mm1.orig/mm/page_io.c
+++ linux-2.6.17-mm1/mm/page_io.c
@@ -124,7 +124,7 @@ int swap_readpage(struct file *file, str
goto out;
}
inc_page_state(pswpin);
- submit_bio(READ, bio);
+ submit_bio(READA, bio);
out:
return ret;
}
--
next prev parent reply other threads:[~2006-06-24 8:23 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20060624082006.574472632@localhost.localdomain>
2006-06-24 8:20 ` [PATCH 0/7] [RFC] iosched: make a difference between read/readahead requests Fengguang Wu
[not found] ` <20060624082310.253199615@localhost.localdomain>
2006-06-24 8:20 ` [PATCH 1/7] iosched: introduce WRITEA Fengguang Wu
[not found] ` <20060624082311.501730089@localhost.localdomain>
2006-06-24 8:20 ` Fengguang Wu [this message]
[not found] ` <20060624082311.912265883@localhost.localdomain>
2006-06-24 8:20 ` [PATCH 5/7] iosched: introduce elv_kick_page() Fengguang Wu
[not found] ` <20060624082312.833976992@localhost.localdomain>
2006-06-24 8:20 ` [PATCH 7/7] iosched: introduce deadline_kick_page() Fengguang Wu
2006-06-24 11:01 ` Jens Axboe
[not found] ` <20060625063232.GA5867@mail.ustc.edu.cn>
2006-06-25 6:32 ` Fengguang Wu
2006-06-28 11:27 ` Jens Axboe
[not found] ` <20060704013248.GA7333@mail.ustc.edu.cn>
2006-07-04 1:32 ` Fengguang Wu
[not found] <20060624020358.719251923@localhost.localdomain>
[not found] ` <20060624024258.540944943@localhost.localdomain>
2006-06-24 2:04 ` [PATCH 4/7] iosched: submit READA requests on possible readahead code path Fengguang Wu
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