Messages in this thread Patch in this message | | | Date | Wed, 16 Dec 2009 12:10:23 +0900 | From | KAMEZAWA Hiroyuki <> | Subject | [mm][RFC][PATCH 10/11] mm accessor for misc drivers |
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mm accessor for misc. drivers.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
--- drivers/dma/iovlock.c | 4 ++-- drivers/oprofile/buffer_sync.c | 10 +++++----- drivers/scsi/st.c | 4 ++-- drivers/video/pvr2fb.c | 4 ++-- 4 files changed, 11 insertions(+), 11 deletions(-)
Index: mmotm-mm-accessor/drivers/dma/iovlock.c =================================================================== --- mmotm-mm-accessor.orig/drivers/dma/iovlock.c +++ mmotm-mm-accessor/drivers/dma/iovlock.c @@ -94,7 +94,7 @@ struct dma_pinned_list *dma_pin_iovec_pa pages += page_list->nr_pages; /* pin pages down */ - down_read(¤t->mm->mmap_sem); + mm_read_lock(current->mm); ret = get_user_pages( current, current->mm, @@ -104,7 +104,7 @@ struct dma_pinned_list *dma_pin_iovec_pa 0, /* force */ page_list->pages, NULL); - up_read(¤t->mm->mmap_sem); + mm_read_unlock(current->mm); if (ret != page_list->nr_pages) goto unpin; Index: mmotm-mm-accessor/drivers/oprofile/buffer_sync.c =================================================================== --- mmotm-mm-accessor.orig/drivers/oprofile/buffer_sync.c +++ mmotm-mm-accessor/drivers/oprofile/buffer_sync.c @@ -87,11 +87,11 @@ munmap_notify(struct notifier_block *sel struct mm_struct *mm = current->mm; struct vm_area_struct *mpnt; - down_read(&mm->mmap_sem); + mm_read_lock(mm); mpnt = find_vma(mm, addr); if (mpnt && mpnt->vm_file && (mpnt->vm_flags & VM_EXEC)) { - up_read(&mm->mmap_sem); + mm_read_unlock(mm); /* To avoid latency problems, we only process the current CPU, * hoping that most samples for the task are on this CPU */ @@ -99,7 +99,7 @@ munmap_notify(struct notifier_block *sel return 0; } - up_read(&mm->mmap_sem); + mm_read_unlock(mm); return 0; } @@ -410,7 +410,7 @@ static void release_mm(struct mm_struct { if (!mm) return; - up_read(&mm->mmap_sem); + mm_read_unlock(mm); mmput(mm); } @@ -419,7 +419,7 @@ static struct mm_struct *take_tasks_mm(s { struct mm_struct *mm = get_task_mm(task); if (mm) - down_read(&mm->mmap_sem); + mm_read_lock(mm); return mm; } Index: mmotm-mm-accessor/drivers/scsi/st.c =================================================================== --- mmotm-mm-accessor.orig/drivers/scsi/st.c +++ mmotm-mm-accessor/drivers/scsi/st.c @@ -4553,7 +4553,7 @@ static int sgl_map_user_pages(struct st_ return -ENOMEM; /* Try to fault in all of the necessary pages */ - down_read(¤t->mm->mmap_sem); + mm_read_lock(current->mm); /* rw==READ means read from drive, write into memory area */ res = get_user_pages( current, @@ -4564,7 +4564,7 @@ static int sgl_map_user_pages(struct st_ 0, /* don't force */ pages, NULL); - up_read(¤t->mm->mmap_sem); + mm_read_unlock(current->mm); /* Errors and no page mapped should return here */ if (res < nr_pages) Index: mmotm-mm-accessor/drivers/video/pvr2fb.c =================================================================== --- mmotm-mm-accessor.orig/drivers/video/pvr2fb.c +++ mmotm-mm-accessor/drivers/video/pvr2fb.c @@ -686,10 +686,10 @@ static ssize_t pvr2fb_write(struct fb_in if (!pages) return -ENOMEM; - down_read(¤t->mm->mmap_sem); + mm_read_lock(current->mm); ret = get_user_pages(current, current->mm, (unsigned long)buf, nr_pages, WRITE, 0, pages, NULL); - up_read(¤t->mm->mmap_sem); + mm_read_unlock(current->mm); if (ret < nr_pages) { nr_pages = ret;
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