diff options
| -rw-r--r-- | drivers/dax/device.c | 4 | ||||
| -rw-r--r-- | include/linux/mm.h | 3 | ||||
| -rw-r--r-- | ipc/shm.c | 8 | ||||
| -rw-r--r-- | mm/hugetlb.c | 2 | ||||
| -rw-r--r-- | mm/mmap.c | 4 |
5 files changed, 11 insertions, 10 deletions
diff --git a/drivers/dax/device.c b/drivers/dax/device.c index 25e0b84a4296..5da2980bb16b 100644 --- a/drivers/dax/device.c +++ b/drivers/dax/device.c @@ -256,7 +256,7 @@ static vm_fault_t dev_dax_fault(struct vm_fault *vmf) return dev_dax_huge_fault(vmf, PE_SIZE_PTE); } -static int dev_dax_split(struct vm_area_struct *vma, unsigned long addr) +static int dev_dax_may_split(struct vm_area_struct *vma, unsigned long addr) { struct file *filp = vma->vm_file; struct dev_dax *dev_dax = filp->private_data; @@ -277,7 +277,7 @@ static unsigned long dev_dax_pagesize(struct vm_area_struct *vma) static const struct vm_operations_struct dax_vm_ops = { .fault = dev_dax_fault, .huge_fault = dev_dax_huge_fault, - .split = dev_dax_split, + .may_split = dev_dax_may_split, .pagesize = dev_dax_pagesize, }; diff --git a/include/linux/mm.h b/include/linux/mm.h index dacc889744b1..5d188b8611dc 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -557,7 +557,8 @@ enum page_entry_size { struct vm_operations_struct { void (*open)(struct vm_area_struct * area); void (*close)(struct vm_area_struct * area); - int (*split)(struct vm_area_struct * area, unsigned long addr); + /* Called any time before splitting to check if it's allowed */ + int (*may_split)(struct vm_area_struct *area, unsigned long addr); int (*mremap)(struct vm_area_struct *area, unsigned long flags); vm_fault_t (*fault)(struct vm_fault *vmf); vm_fault_t (*huge_fault)(struct vm_fault *vmf, diff --git a/ipc/shm.c b/ipc/shm.c index e25c7c6106bc..febd88daba8c 100644 --- a/ipc/shm.c +++ b/ipc/shm.c @@ -434,13 +434,13 @@ static vm_fault_t shm_fault(struct vm_fault *vmf) return sfd->vm_ops->fault(vmf); } -static int shm_split(struct vm_area_struct *vma, unsigned long addr) +static int shm_may_split(struct vm_area_struct *vma, unsigned long addr) { struct file *file = vma->vm_file; struct shm_file_data *sfd = shm_file_data(file); - if (sfd->vm_ops->split) - return sfd->vm_ops->split(vma, addr); + if (sfd->vm_ops->may_split) + return sfd->vm_ops->may_split(vma, addr); return 0; } @@ -582,7 +582,7 @@ static const struct vm_operations_struct shm_vm_ops = { .open = shm_open, /* callback for a new vm-area open */ .close = shm_close, /* callback for when the vm-area is released */ .fault = shm_fault, - .split = shm_split, + .may_split = shm_may_split, .pagesize = shm_pagesize, #if defined(CONFIG_NUMA) .set_policy = shm_set_policy, diff --git a/mm/hugetlb.c b/mm/hugetlb.c index d029d938d26d..4b809cc7a3fd 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -3673,7 +3673,7 @@ const struct vm_operations_struct hugetlb_vm_ops = { .fault = hugetlb_vm_op_fault, .open = hugetlb_vm_op_open, .close = hugetlb_vm_op_close, - .split = hugetlb_vm_op_split, + .may_split = hugetlb_vm_op_split, .pagesize = hugetlb_vm_op_pagesize, }; diff --git a/mm/mmap.c b/mm/mmap.c index 8950c20239a0..886de799e7d2 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -2731,8 +2731,8 @@ int __split_vma(struct mm_struct *mm, struct vm_area_struct *vma, struct vm_area_struct *new; int err; - if (vma->vm_ops && vma->vm_ops->split) { - err = vma->vm_ops->split(vma, addr); + if (vma->vm_ops && vma->vm_ops->may_split) { + err = vma->vm_ops->may_split(vma, addr); if (err) return err; } |