Commit bc112323 authored by Namjae Jeon's avatar Namjae Jeon Committed by Jan Kara
Browse files

udf: Add readpages support for udf. 



Use mpage_readpages() instead of multiple calls to udf_readpage() to reduce the
CPU utilization and make performance higher.

Signed-off-by: default avatarNamjae Jeon <linkinjeon@gmail.com>
Signed-off-by: default avatarJan Kara <jack@suse.cz>
parent 3ee77f20

fs/udf/inode.c

+9 −1
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ 
#include <linux/writeback.h>

#include <linux/slab.h>

#include <linux/crc-itu-t.h>

#include <linux/mpage.h>



#include "udf_i.h"

#include "udf_sb.h"
@@ -104,7 +105,13 @@ static int udf_writepage(struct page *page, struct writeback_control *wbc) 


static int udf_readpage(struct file *file, struct page *page)

{

	return block_read_full_page(page, udf_get_block);

	return mpage_readpage(page, udf_get_block);

}



static int udf_readpages(struct file *file, struct address_space *mapping,

			struct list_head *pages, unsigned nr_pages)

{

	return mpage_readpages(mapping, pages, nr_pages, udf_get_block);

}



static int udf_write_begin(struct file *file, struct address_space *mapping,
@@ -139,6 +146,7 @@ static sector_t udf_bmap(struct address_space *mapping, sector_t block) 


const struct address_space_operations udf_aops = {

	.readpage	= udf_readpage,

	.readpages	= udf_readpages,

	.writepage	= udf_writepage,

	.write_begin		= udf_write_begin,

	.write_end		= generic_write_end,