@@ -506,8 +506,20 @@ out:
}
if (!ret) {
- new->start = avail_start;
+ /* compare which one have max order */
+ new->start = round_down(avail_start + avail_size - size,
+ constraint->align);
+ new->end = avail_start + avail_size - 1;
+ new->start = constraint->alignf(constraint->alignf_data, new,
+ size, constraint->align);
new->end = new->start + size - 1;
+
+ if (new->start < avail_start ||
+ new->end > (avail_start + avail_size - 1) ||
+ __ffs64(new->start) >= __ffs64(avail_start)) {
+ new->start = avail_start;
+ new->end = new->start + size - 1;
+ }
}
return ret;
}
Compare align between put range in head and tail, pick small one to leave big one for future user. Signed-off-by: Yinghai Lu <yinghai@kernel.org> --- kernel/resource.c | 14 +++++++++++++- 1 files changed, 13 insertions(+), 1 deletions(-)