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Diffstat (limited to 'fs/cramfs/inode.c')
-rw-r--r--fs/cramfs/inode.c17
1 files changed, 4 insertions, 13 deletions
diff --git a/fs/cramfs/inode.c b/fs/cramfs/inode.c
index 7ae59a6afc5c..61ccf7722fc3 100644
--- a/fs/cramfs/inode.c
+++ b/fs/cramfs/inode.c
@@ -183,6 +183,7 @@ static void *cramfs_blkdev_read(struct super_block *sb, unsigned int offset,
unsigned int len)
{
struct address_space *mapping = sb->s_bdev->bd_inode->i_mapping;
+ struct file_ra_state ra;
struct page *pages[BLKS_PER_BUF];
unsigned i, blocknr, buffer;
unsigned long devsize;
@@ -212,6 +213,9 @@ static void *cramfs_blkdev_read(struct super_block *sb, unsigned int offset,
devsize = bdev_nr_bytes(sb->s_bdev) >> PAGE_SHIFT;
/* Ok, read in BLKS_PER_BUF pages completely first. */
+ file_ra_state_init(&ra, mapping);
+ page_cache_sync_readahead(mapping, &ra, NULL, blocknr, BLKS_PER_BUF);
+
for (i = 0; i < BLKS_PER_BUF; i++) {
struct page *page = NULL;
@@ -224,19 +228,6 @@ static void *cramfs_blkdev_read(struct super_block *sb, unsigned int offset,
pages[i] = page;
}
- for (i = 0; i < BLKS_PER_BUF; i++) {
- struct page *page = pages[i];
-
- if (page) {
- wait_on_page_locked(page);
- if (!PageUptodate(page)) {
- /* asynchronous error */
- put_page(page);
- pages[i] = NULL;
- }
- }
- }
-
buffer = next_buffer;
next_buffer = NEXT_BUFFER(buffer);
buffer_blocknr[buffer] = blocknr;