tree 8f115031584d8ebc14280079fed8183ef1f032ac
parent fc31d16add13773265cc53d59f2e7594cb3c0a14
author Wu Fengguang <fengguang.wu@intel.com> 1245191481 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1245206848 -0700

readahead: remove one unnecessary radix tree lookup

(hit_readahead_marker != 0) means the page at @offset is present, so we
can search for non-present page starting from @offset+1.

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>