From: Badari Pulavarty <pbadari@us.ibm.com>
To: christoph <hch@lst.de>
Cc: mcao@us.ibm.com, akpm@osdl.org,
lkml <linux-kernel@vger.kernel.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>
Subject: [PATCH 1/3] pass b_size to ->get_block()
Date: Mon, 20 Feb 2006 13:23:10 -0800 [thread overview]
Message-ID: <1140470590.22756.14.camel@dyn9047017100.beaverton.ibm.com> (raw)
In-Reply-To: <1140470487.22756.12.camel@dyn9047017100.beaverton.ibm.com>
[-- Attachment #1: Type: text/plain, Size: 211 bytes --]
[PATCH 1/3] pass b_size to ->get_block()
Pass amount of disk needs to be mapped to get_block().
This way one can modify the fs ->get_block() functions
to map multiple blocks at the same time.
Thanks,
Badari
[-- Attachment #2: getblock-take-size.patch --]
[-- Type: text/x-patch, Size: 3339 bytes --]
Pass amount of disk needs to be mapped to get_block().
This way one can modify the fs ->get_block() functions
to map multiple blocks at the same time.
Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
fs/buffer.c | 6 ++++++
fs/mpage.c | 2 ++
include/linux/buffer_head.h | 1 +
3 files changed, 9 insertions(+)
Index: linux-2.6.16-rc4/fs/buffer.c
===================================================================
--- linux-2.6.16-rc4.orig/fs/buffer.c 2006-02-17 14:23:45.000000000 -0800
+++ linux-2.6.16-rc4/fs/buffer.c 2006-02-20 09:37:58.000000000 -0800
@@ -1785,6 +1785,7 @@ static int __block_write_full_page(struc
clear_buffer_dirty(bh);
set_buffer_uptodate(bh);
} else if (!buffer_mapped(bh) && buffer_dirty(bh)) {
+ bh->b_size = 1 << inode->i_blkbits;
err = get_block(inode, block, bh, 1);
if (err)
goto recover;
@@ -1938,6 +1939,7 @@ static int __block_prepare_write(struct
if (buffer_new(bh))
clear_buffer_new(bh);
if (!buffer_mapped(bh)) {
+ bh->b_size = 1 << inode->i_blkbits;
err = get_block(inode, block, bh, 1);
if (err)
break;
@@ -2093,6 +2095,7 @@ int block_read_full_page(struct page *pa
fully_mapped = 0;
if (iblock < lblock) {
+ bh->b_size = 1 << inode->i_blkbits;
err = get_block(inode, iblock, bh, 0);
if (err)
SetPageError(page);
@@ -2414,6 +2417,7 @@ int nobh_prepare_write(struct page *page
create = 1;
if (block_start >= to)
create = 0;
+ map_bh.b_size = 1 << blkbits;
ret = get_block(inode, block_in_file + block_in_page,
&map_bh, create);
if (ret)
@@ -2674,6 +2678,7 @@ int block_truncate_page(struct address_s
err = 0;
if (!buffer_mapped(bh)) {
+ bh->b_size = 1 << inode->i_blkbits;
err = get_block(inode, iblock, bh, 0);
if (err)
goto unlock;
@@ -2760,6 +2765,7 @@ sector_t generic_block_bmap(struct addre
struct inode *inode = mapping->host;
tmp.b_state = 0;
tmp.b_blocknr = 0;
+ tmp.b_size = 1 << inode->i_blkbits;
get_block(inode, block, &tmp, 0);
return tmp.b_blocknr;
}
Index: linux-2.6.16-rc4/include/linux/buffer_head.h
===================================================================
--- linux-2.6.16-rc4.orig/include/linux/buffer_head.h 2006-02-17 14:23:45.000000000 -0800
+++ linux-2.6.16-rc4/include/linux/buffer_head.h 2006-02-20 09:39:20.000000000 -0800
@@ -277,6 +277,7 @@ map_bh(struct buffer_head *bh, struct su
set_buffer_mapped(bh);
bh->b_bdev = sb->s_bdev;
bh->b_blocknr = block;
+ bh->b_size = sb->s_blocksize;
}
/*
Index: linux-2.6.16-rc4/fs/mpage.c
===================================================================
--- linux-2.6.16-rc4.orig/fs/mpage.c 2006-02-17 14:23:45.000000000 -0800
+++ linux-2.6.16-rc4/fs/mpage.c 2006-02-20 09:45:37.000000000 -0800
@@ -192,6 +192,7 @@ do_mpage_readpage(struct bio *bio, struc
page_block++, block_in_file++) {
bh.b_state = 0;
if (block_in_file < last_block) {
+ bh.b_size = blocksize;
if (get_block(inode, block_in_file, &bh, 0))
goto confused;
}
@@ -472,6 +473,7 @@ __mpage_writepage(struct bio *bio, struc
for (page_block = 0; page_block < blocks_per_page; ) {
map_bh.b_state = 0;
+ map_bh.b_size = 1 << blkbits;
if (get_block(inode, block_in_file, &map_bh, 1))
goto confused;
if (buffer_new(&map_bh))
next prev parent reply other threads:[~2006-02-20 21:22 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-20 21:21 [PATCH 0/3] map multiple blocks in get_block() and mpage_readpages() Badari Pulavarty
2006-02-20 21:23 ` Badari Pulavarty [this message]
2006-02-20 21:23 ` [PATCH 2/3] map multiple blocks for mpage_readpages() Badari Pulavarty
2006-02-23 3:29 ` Suparna Bhattacharya
2006-02-23 22:18 ` Badari Pulavarty
2006-02-20 21:24 ` [PATCH 3/3] remove ->get_blocks() support Badari Pulavarty
2006-02-20 21:59 ` [PATCH 0/3] map multiple blocks in get_block() and mpage_readpages() Nathan Scott
2006-02-20 23:06 ` Badari Pulavarty
2006-02-20 23:16 ` Nathan Scott
2006-02-21 2:41 ` Jeremy Higdon
2006-02-21 16:03 ` Badari Pulavarty
2006-02-21 21:39 ` Nathan Scott
2006-02-22 15:12 ` christoph
2006-02-22 16:58 ` Badari Pulavarty
2006-02-22 16:59 ` christoph
2006-02-23 1:40 ` Nathan Scott
2006-02-23 1:59 ` Andrew Morton
2006-02-23 16:28 ` [PATCH] change b_size to size_t Badari Pulavarty
2006-02-23 16:32 ` Benjamin LaHaise
2006-02-23 17:20 ` Badari Pulavarty
2006-02-23 17:28 ` Badari Pulavarty
2006-02-23 17:29 ` Benjamin LaHaise
2006-02-23 18:46 ` Badari Pulavarty
2006-02-23 17:40 ` Badari Pulavarty
2006-02-23 16:40 ` Dave Kleikamp
2006-02-22 17:23 ` [PATCH 0/3] map multiple blocks in get_block() and mpage_readpages() Peter Staubach
2006-02-22 18:37 ` Dave Kleikamp
2006-02-22 19:00 ` Badari Pulavarty
2006-02-24 17:19 ` Badari Pulavarty
2006-03-06 10:03 ` Suparna Bhattacharya
2006-03-06 22:39 ` Nathan Scott
2006-03-07 9:00 ` Badari Pulavarty
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