(nuttx) branch master updated: mm/mempool: Fix multiple pool exact size lookup

[xiaoxiang]

This is an automated email from the ASF dual-hosted git repository.

xiaoxiang781216 pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/nuttx.git


The following commit(s) were added to refs/heads/master by this push:
     new 706b328088c mm/mempool: Fix multiple pool exact size lookup
706b328088c is described below

commit 706b328088c2aba6bd447cb7e3ffac42a321d6e6
Author: chao an <anchao.arc...@bytedance.com>
AuthorDate: Tue Oct 27 17:13:53 2026 +0800

    mm/mempool: Fix multiple pool exact size lookup
    
    Use lower-bound lookup for non-linear pool size classes so exact-size
    requests are served by the matching pool instead of the next larger one.
    
    Signed-off-by: chao an <anchao.arc...@bytedance.com>
---
 mm/mempool/mempool_multiple.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/mm/mempool/mempool_multiple.c b/mm/mempool/mempool_multiple.c
index 7f31b7ef368..a53faa06ecd 100644
--- a/mm/mempool/mempool_multiple.c
+++ b/mm/mempool/mempool_multiple.c
@@ -127,7 +127,7 @@ mempool_multiple_find(FAR struct mempool_multiple_s *mpool, 
size_t size)
   while (left < right)
     {
       mid = (left + right) >> 1;
-      if (mpool->pools[mid].blocksize > size)
+      if (mpool->pools[mid].blocksize >= size)
         {
           right = mid;
         }
@@ -718,6 +718,7 @@ FAR void *mempool_multiple_memalign(FAR struct 
mempool_multiple_s *mpool,
   do
     {
       FAR char *blk = mempool_allocate(pool);
+
       if (blk != NULL)
         {
           return (FAR void *)ALIGN_UP((uintptr_t)blk, alignment);
@@ -737,6 +738,7 @@ void mempool_multiple_foreach(FAR struct mempool_multiple_s 
*mpool,
                               FAR void *arg)
 {
   size_t i;
+
   for (i = 0; i < mpool->npools; i++)
     {
       handle(mpool->pools + i, arg);