The patch titled Subject: mqueue: don't use kmalloc with KMALLOC_MAX_SIZE has been removed from the -mm tree. Its filename was mqueue-dont-use-kmalloc-with-kmalloc_max_size.patch This patch was dropped because it was merged into mainline or a subsystem tree The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ From: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> Subject: mqueue: don't use kmalloc with KMALLOC_MAX_SIZE KMALLOC_MAX_SIZE is not a good threshold. It is extremely high and problematic. Unfortunately, some silly drivers depend on this and we can't change it. But any new code needn't use such extreme ugly high order allocations. It brings us awful fragmentation issues and system slowdown. Signed-off-by: KOSAKI Motohiro <mkosaki@xxxxxxxxxxxxxx> Acked-by: Doug Ledford <dledford@xxxxxxxxxx> Acked-by: Joe Korty <joe.korty@xxxxxxxx> Cc: Amerigo Wang <amwang@xxxxxxxxxx> Cc: Serge E. Hallyn <serue@xxxxxxxxxx> Cc: Jiri Slaby <jslaby@xxxxxxx> Cc: Joe Korty <joe.korty@xxxxxxxx> Cc: Manfred Spraul <manfred@xxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- ipc/mqueue.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff -puN ipc/mqueue.c~mqueue-dont-use-kmalloc-with-kmalloc_max_size ipc/mqueue.c --- a/ipc/mqueue.c~mqueue-dont-use-kmalloc-with-kmalloc_max_size +++ a/ipc/mqueue.c @@ -153,7 +153,7 @@ static struct inode *mqueue_get_inode(st info->attr.mq_msgsize = attr->mq_msgsize; } mq_msg_tblsz = info->attr.mq_maxmsg * sizeof(struct msg_msg *); - if (mq_msg_tblsz > KMALLOC_MAX_SIZE) + if (mq_msg_tblsz > PAGE_SIZE) info->messages = vmalloc(mq_msg_tblsz); else info->messages = kmalloc(mq_msg_tblsz, GFP_KERNEL); @@ -266,7 +266,7 @@ static void mqueue_evict_inode(struct in spin_lock(&info->lock); for (i = 0; i < info->attr.mq_curmsgs; i++) free_msg(info->messages[i]); - if (info->attr.mq_maxmsg * sizeof(struct msg_msg *) > KMALLOC_MAX_SIZE) + if (is_vmalloc_addr(info->messages)) vfree(info->messages); else kfree(info->messages); _ Patches currently in -mm which might be from kosaki.motohiro@xxxxxxxxxxxxxx are origin.patch mqueue-separate-mqueue-default-value-from-maximum-value-v2.patch selftests-add-mq_open_tests.patch ipc-mqueue-improve-performance-of-send-recv.patch ipc-mqueue-correct-mq_attr_ok-test.patch ipc-mqueue-strengthen-checks-on-mqueue-creation.patch tools-selftests-add-mq_perf_tests.patch ipc-mqueue-add-rbtree-node-caching-support.patch c-r-prctl-add-ability-to-set-new-mm_struct-exe_file.patch c-r-prctl-add-ability-to-set-new-mm_struct-exe_file-update-after-mm-num_exe_file_vmas-removal.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html