A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-30 19:51:31 -04:00
Code Issues Projects Releases Packages Wiki Activity

readahead: remove one unnecessary radix tree lookup

Browse source 
(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 <[email protected]>
Signed-off-by: Wu Fengguang <[email protected]>
Cc: Ying Han <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Wu Fengguang 2009-06-16 15:31:21 -07:00 • committed by Linus Torvalds
commit caca7cb748
1 changed files with 1 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

2
mm/readahead.c
View file

@ -395,7 +395,7 @@ ondemand_readahead(struct address_space *mapping,
pgoff_t start;
rcu_read_lock();
start = radix_tree_next_hole(&mapping->page_tree, offset,max+1);
start = radix_tree_next_hole(&mapping->page_tree, offset+1,max);
rcu_read_unlock();
if (!start || start - offset > max)