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MFC r278402

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Preset the object's color, or alignment, to maximize superpage usage.
This commit is contained in:
alc 2015-04-20 17:43:36 +00:00
parent 248744ce23
commit 48e295fadf
1 changed files with 2 additions and 1 deletions
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3
sys/kern/uipc_shm.c
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@ -554,9 +554,10 @@ shm_alloc(struct ucred *ucred, mode_t mode)
shmfd->shm_object = vm_pager_allocate(OBJT_DEFAULT, NULL,
shmfd->shm_size, VM_PROT_DEFAULT, 0, ucred);
KASSERT(shmfd->shm_object != NULL, ("shm_create: vm_pager_allocate"));
shmfd->shm_object->pg_color = 0;
VM_OBJECT_WLOCK(shmfd->shm_object);
vm_object_clear_flag(shmfd->shm_object, OBJ_ONEMAPPING);
vm_object_set_flag(shmfd->shm_object, OBJ_NOSPLIT);
vm_object_set_flag(shmfd->shm_object, OBJ_COLORED | OBJ_NOSPLIT);
VM_OBJECT_WUNLOCK(shmfd->shm_object);
vfs_timestamp(&shmfd->shm_birthtime);
shmfd->shm_atime = shmfd->shm_mtime = shmfd->shm_ctime =