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authorNamjae Jeon <linkinjeon@gmail.com>2011-10-03 14:02:59 +0900
committerJan Kara <jack@suse.cz>2011-10-06 00:13:48 +0200
commitbc1123239ab950798779ca4e23228afb5443eb5d (patch)
treedff5797bd23ba770621d6f5a358dc7142c4ab1b0 /fs
parent3ee77f2091c229a72c64d9aeef1ee4a7624e5795 (diff)
downloadop-kernel-dev-bc1123239ab950798779ca4e23228afb5443eb5d.zip
op-kernel-dev-bc1123239ab950798779ca4e23228afb5443eb5d.tar.gz
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: Namjae Jeon <linkinjeon@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs')
-rw-r--r--fs/udf/inode.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 1d1358e..f94d6f9 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -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,
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