diff options
Diffstat (limited to 'kernel/power/user.c')
| -rw-r--r-- | kernel/power/user.c | 22 |
1 files changed, 5 insertions, 17 deletions
diff --git a/kernel/power/user.c b/kernel/power/user.c index 72dbfd01408e..ad4e10208cde 100644 --- a/kernel/power/user.c +++ b/kernel/power/user.c @@ -33,7 +33,6 @@ static struct snapshot_data { struct snapshot_handle handle; int swap; - struct bitmap_page *bitmap; int mode; char frozen; char ready; @@ -69,7 +68,6 @@ static int snapshot_open(struct inode *inode, struct file *filp) data->swap = -1; data->mode = O_WRONLY; } - data->bitmap = NULL; data->frozen = 0; data->ready = 0; data->platform_suspend = 0; @@ -84,8 +82,7 @@ static int snapshot_release(struct inode *inode, struct file *filp) swsusp_free(); free_basic_memory_bitmaps(); data = filp->private_data; - free_all_swap_pages(data->swap, data->bitmap); - free_bitmap(data->bitmap); + free_all_swap_pages(data->swap); if (data->frozen) { mutex_lock(&pm_mutex); thaw_processes(); @@ -300,14 +297,7 @@ static int snapshot_ioctl(struct inode *inode, struct file *filp, error = -ENODEV; break; } - if (!data->bitmap) { - data->bitmap = alloc_bitmap(count_swap_pages(data->swap, 0)); - if (!data->bitmap) { - error = -ENOMEM; - break; - } - } - offset = alloc_swapdev_block(data->swap, data->bitmap); + offset = alloc_swapdev_block(data->swap); if (offset) { offset <<= PAGE_SHIFT; error = put_user(offset, (sector_t __user *)arg); @@ -321,13 +311,11 @@ static int snapshot_ioctl(struct inode *inode, struct file *filp, error = -ENODEV; break; } - free_all_swap_pages(data->swap, data->bitmap); - free_bitmap(data->bitmap); - data->bitmap = NULL; + free_all_swap_pages(data->swap); break; case SNAPSHOT_SET_SWAP_FILE: - if (!data->bitmap) { + if (!swsusp_swap_in_use()) { /* * User space encodes device types as two-byte values, * so we need to recode them @@ -426,7 +414,7 @@ static int snapshot_ioctl(struct inode *inode, struct file *filp, break; case SNAPSHOT_SET_SWAP_AREA: - if (data->bitmap) { + if (swsusp_swap_in_use()) { error = -EPERM; } else { struct resume_swap_area swap_area; |