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Initialize the vm object's flags to include OBJ_NOSPLIT, just like the

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vm objects that are used by System V shared memory segments.
This commit is contained in:
Alan Cox 2008-04-13 21:08:34 +00:00
parent 4d32fcb42b
commit e384d8a89b
1 changed files with 4 additions and 0 deletions
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4
sys/kern/uipc_shm.c
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@ -319,6 +319,10 @@ shm_alloc(struct ucred *ucred, mode_t mode)
shmfd->shm_object = vm_pager_allocate(OBJT_DEFAULT, NULL,
shmfd->shm_size, VM_PROT_DEFAULT, 0);
KASSERT(shmfd->shm_object != NULL, ("shm_create: vm_pager_allocate"));
VM_OBJECT_LOCK(shmfd->shm_object);
vm_object_clear_flag(shmfd->shm_object, OBJ_ONEMAPPING);
vm_object_set_flag(shmfd->shm_object, OBJ_NOSPLIT);
VM_OBJECT_UNLOCK(shmfd->shm_object);
vfs_timestamp(&shmfd->shm_birthtime);
shmfd->shm_atime = shmfd->shm_mtime = shmfd->shm_ctime =
shmfd->shm_birthtime;