tree 4255b05374f6b6c76c0abf1f3d65f33be367cfbb
parent 93dfe2ac516250755f7d5edd438b0ce67c0e3aa6
author Chao Yu <chao2.yu@samsung.com> 1385106534 +0800
committer Jaegeuk Kim <jaegeuk.kim@samsung.com> 1387761485 +0900

f2fs: readahead contiguous pages for restore_node_summary

If cp has no CP_UMOUNT_FLAG, we will read all pages in whole node segment
one by one, it makes low performance. So let's merge contiguous pages and
readahead for better performance.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
[Jaegeuk Kim: adjust the new bio operations]
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>