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Diffstat (limited to 'fs/ext3/dir.c')
-rw-r--r--fs/ext3/dir.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/fs/ext3/dir.c b/fs/ext3/dir.c
index 852869840f2..3c6d384a2c6 100644
--- a/fs/ext3/dir.c
+++ b/fs/ext3/dir.c
@@ -136,12 +136,14 @@ static int ext3_readdir(struct file * filp,
err = ext3_get_blocks_handle(NULL, inode, blk, 1,
&map_bh, 0, 0);
if (err > 0) {
- page_cache_readahead(sb->s_bdev->bd_inode->i_mapping,
- &filp->f_ra,
- filp,
- map_bh.b_blocknr >>
- (PAGE_CACHE_SHIFT - inode->i_blkbits),
- 1);
+ pgoff_t index = map_bh.b_blocknr >>
+ (PAGE_CACHE_SHIFT - inode->i_blkbits);
+ if (!ra_has_index(&filp->f_ra, index))
+ page_cache_readahead_ondemand(
+ sb->s_bdev->bd_inode->i_mapping,
+ &filp->f_ra, filp,
+ NULL, index, 1);
+ filp->f_ra.prev_index = index;
bh = ext3_bread(NULL, inode, blk, 0, &err);
}