diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/power/swap.c | 21 | ||||
| -rw-r--r-- | kernel/power/user.c | 26 | ||||
| -rw-r--r-- | kernel/trace/blktrace.c | 13 |
3 files changed, 22 insertions, 38 deletions
diff --git a/kernel/power/swap.c b/kernel/power/swap.c index 01e2858b5fe3..71385bedcc3a 100644 --- a/kernel/power/swap.c +++ b/kernel/power/swap.c @@ -335,26 +335,23 @@ static int swsusp_swap_check(void) { int res; - res = swap_type_of(swsusp_resume_device, swsusp_resume_block, - &hib_resume_bdev); + if (swsusp_resume_device) + res = swap_type_of(swsusp_resume_device, swsusp_resume_block); + else + res = find_first_swap(&swsusp_resume_device); if (res < 0) return res; - root_swap = res; - res = blkdev_get(hib_resume_bdev, FMODE_WRITE, NULL); - if (res) - return res; + + hib_resume_bdev = blkdev_get_by_dev(swsusp_resume_device, FMODE_WRITE, + NULL); + if (IS_ERR(hib_resume_bdev)) + return PTR_ERR(hib_resume_bdev); res = set_blocksize(hib_resume_bdev, PAGE_SIZE); if (res < 0) blkdev_put(hib_resume_bdev, FMODE_WRITE); - /* - * Update the resume device to the one actually used, - * so the test_resume mode can use it in case it is - * invoked from hibernate() to test the snapshot. - */ - swsusp_resume_device = hib_resume_bdev->bd_dev; return res; } diff --git a/kernel/power/user.c b/kernel/power/user.c index 047f598f89a5..740723bb3885 100644 --- a/kernel/power/user.c +++ b/kernel/power/user.c @@ -35,12 +35,12 @@ static struct snapshot_data { bool ready; bool platform_support; bool free_bitmaps; - struct inode *bd_inode; + dev_t dev; } snapshot_state; -int is_hibernate_resume_dev(const struct inode *bd_inode) +int is_hibernate_resume_dev(dev_t dev) { - return hibernation_available() && snapshot_state.bd_inode == bd_inode; + return hibernation_available() && snapshot_state.dev == dev; } static int snapshot_open(struct inode *inode, struct file *filp) @@ -69,8 +69,7 @@ static int snapshot_open(struct inode *inode, struct file *filp) memset(&data->handle, 0, sizeof(struct snapshot_handle)); if ((filp->f_flags & O_ACCMODE) == O_RDONLY) { /* Hibernating. The image device should be accessible. */ - data->swap = swsusp_resume_device ? - swap_type_of(swsusp_resume_device, 0, NULL) : -1; + data->swap = swap_type_of(swsusp_resume_device, 0); data->mode = O_RDONLY; data->free_bitmaps = false; error = pm_notifier_call_chain_robust(PM_HIBERNATION_PREPARE, PM_POST_HIBERNATION); @@ -95,7 +94,7 @@ static int snapshot_open(struct inode *inode, struct file *filp) data->frozen = false; data->ready = false; data->platform_support = false; - data->bd_inode = NULL; + data->dev = 0; Unlock: unlock_system_sleep(); @@ -111,7 +110,7 @@ static int snapshot_release(struct inode *inode, struct file *filp) swsusp_free(); data = filp->private_data; - data->bd_inode = NULL; + data->dev = 0; free_all_swap_pages(data->swap); if (data->frozen) { pm_restore_gfp_mask(); @@ -204,7 +203,6 @@ struct compat_resume_swap_area { static int snapshot_set_swap_area(struct snapshot_data *data, void __user *argp) { - struct block_device *bdev; sector_t offset; dev_t swdev; @@ -231,16 +229,10 @@ static int snapshot_set_swap_area(struct snapshot_data *data, * User space encodes device types as two-byte values, * so we need to recode them */ - if (!swdev) { - data->swap = -1; - return -EINVAL; - } - data->swap = swap_type_of(swdev, offset, &bdev); + data->swap = swap_type_of(swdev, offset); if (data->swap < 0) - return -ENODEV; - - data->bd_inode = bdev->bd_inode; - bdput(bdev); + return swdev ? -ENODEV : -EINVAL; + data->dev = swdev; return 0; } diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c index 4b3a42fc3b24..f1022945e346 100644 --- a/kernel/trace/blktrace.c +++ b/kernel/trace/blktrace.c @@ -527,7 +527,7 @@ static int do_blk_trace_setup(struct request_queue *q, char *name, dev_t dev, * and scsi-generic block devices we create a temporary new debugfs * directory that will be removed once the trace ends. */ - if (bdev && bdev == bdev->bd_contains) + if (bdev && !bdev_is_partition(bdev)) dir = q->debugfs_dir; else bt->dir = dir = debugfs_create_dir(buts->name, blk_debugfs_root); @@ -793,7 +793,7 @@ static u64 blk_trace_bio_get_cgid(struct request_queue *q, struct bio *bio) return cgroup_id(bio_blkcg(bio)->css.cgroup); } #else -u64 blk_trace_bio_get_cgid(struct request_queue *q, struct bio *bio) +static u64 blk_trace_bio_get_cgid(struct request_queue *q, struct bio *bio) { return 0; } @@ -1827,13 +1827,11 @@ static ssize_t sysfs_blk_trace_attr_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct hd_struct *p = dev_to_part(dev); + struct block_device *bdev = bdget_part(dev_to_part(dev)); struct request_queue *q; - struct block_device *bdev; struct blk_trace *bt; ssize_t ret = -ENXIO; - bdev = bdget(part_devt(p)); if (bdev == NULL) goto out; @@ -1875,7 +1873,6 @@ static ssize_t sysfs_blk_trace_attr_store(struct device *dev, { struct block_device *bdev; struct request_queue *q; - struct hd_struct *p; struct blk_trace *bt; u64 value; ssize_t ret = -EINVAL; @@ -1895,9 +1892,7 @@ static ssize_t sysfs_blk_trace_attr_store(struct device *dev, goto out; ret = -ENXIO; - - p = dev_to_part(dev); - bdev = bdget(part_devt(p)); + bdev = bdget_part(dev_to_part(dev)); if (bdev == NULL) goto out; |