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authorNamjae Jeon <linkinjeon@gmail.com>2011-11-02 13:38:00 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-11-02 16:06:59 -0700
commit3069083cc8def2ffad8520f0f24c6f95f140aac5 (patch)
tree226fddfdb3ad4f170809fd44f167a02a360f2ea2 /fs/isofs
parentb6eb48d02dc73d19bebc396a9e92dd64a65d3199 (diff)
downloadlinaro-lsk-3069083cc8def2ffad8520f0f24c6f95f140aac5.tar.gz
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: Namjae Jeon <linkinjeon@gmail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/isofs')
-rw-r--r--fs/isofs/inode.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
index a5d03672d04..46844ff39d6 100644
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -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
};