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Commit 3069083c authored by Namjae Jeon's avatar Namjae Jeon Committed by Linus Torvalds
Browse files

isofs: add readpages support 



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

Signed-off-by: default avatarNamjae Jeon <linkinjeon@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent b6eb48d0

fs/isofs/inode.c

+9 −1
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ 
#include <linux/statfs.h>

#include <linux/cdrom.h>

#include <linux/parser.h>

#include <linux/mpage.h>



#include "isofs.h"

#include "zisofs.h"
@@ -1148,7 +1149,13 @@ struct buffer_head *isofs_bread(struct inode *inode, sector_t block) 


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

{

	return block_read_full_page(page,isofs_get_block);

	return mpage_readpage(page, isofs_get_block);

}



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

			struct list_head *pages, unsigned nr_pages)

{

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

}



static sector_t _isofs_bmap(struct address_space *mapping, sector_t block)
@@ -1158,6 +1165,7 @@ static sector_t _isofs_bmap(struct address_space *mapping, sector_t block) 


static const struct address_space_operations isofs_aops = {

	.readpage = isofs_readpage,

	.readpages = isofs_readpages,

	.bmap = _isofs_bmap

};