Commit 160334a0 authored Jun 16, 2009 by Wu Fengguang Committed by Linus Torvalds Jun 16, 2009

readahead: increase interleaved readahead size



Make sure interleaved readahead size is larger than request size.  This
also makes the readahead window grow up more quickly.

Reported-by: Xu Chenfeng <xcf@ustc.edu.cn>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Cc: Ying Han <yinghan@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent caca7cb7

mm/readahead.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -403,6 +403,7 @@ ondemand_readahead(struct address_space *mapping,

		ra->start = start;
		ra->size = start - offset; /* old async_size */
		ra->size += req_size;
		ra->size = get_next_ra_size(ra, max);
		ra->async_size = ra->size;
		goto readit;