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for-5.16/bdev-size-2021-10-29

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Merge tag 'for-5.16/bdev-size-2021-10-29' of git://git.kernel.dk/linux-block

Pull bdev size cleanups from Jens Axboe:
 "Clean up the bdev size handling with new bdev_nr_bytes() helper"

* tag 'for-5.16/bdev-size-2021-10-29' of git://git.kernel.dk/linux-block: (34 commits)
  partitions/ibm: use bdev_nr_sectors instead of open coding it
  partitions/efi: use bdev_nr_bytes instead of open coding it
  block/ioctl: use bdev_nr_sectors and bdev_nr_bytes
  block: cache inode size in bdev
  udf: use sb_bdev_nr_blocks
  reiserfs: use sb_bdev_nr_blocks
  ntfs: use sb_bdev_nr_blocks
  jfs: use sb_bdev_nr_blocks
  ext4: use sb_bdev_nr_blocks
  block: add a sb_bdev_nr_blocks helper
  block: use bdev_nr_bytes instead of open coding it in blkdev_fallocate
  squashfs: use bdev_nr_bytes instead of open coding it
  reiserfs: use bdev_nr_bytes instead of open coding it
  pstore/blk: use bdev_nr_bytes instead of open coding it
  ntfs3: use bdev_nr_bytes instead of open coding it
  nilfs2: use bdev_nr_bytes instead of open coding it
  nfs/blocklayout: use bdev_nr_bytes instead of open coding it
  jfs: use bdev_nr_bytes instead of open coding it
  hfsplus: use bdev_nr_sectors instead of open coding it
  hfs: use bdev_nr_sectors instead of open coding it
  ...
This commit is contained in:
Linus Torvalds 2021-11-01 09:50:37 -07:00
commit 3f01727f75
62 changed files with 140 additions and 160 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
block/fops.c
View File

@ -605,7 +605,7 @@ static long blkdev_fallocate(struct file *file, int mode, loff_t start,
return -EOPNOTSUPP;
/* Don't go off the end of the device. */
isize = i_size_read(bdev->bd_inode);
isize = bdev_nr_bytes(bdev);
if (start >= isize)
return -EINVAL;
if (end >= isize) {

1
block/genhd.c
View File

@ -58,6 +58,7 @@ void set_capacity(struct gendisk *disk, sector_t sectors)
spin_lock(&bdev->bd_size_lock);
i_size_write(bdev->bd_inode, (loff_t)sectors << SECTOR_SHIFT);
bdev->bd_nr_sectors = sectors;
spin_unlock(&bdev->bd_size_lock);
}
EXPORT_SYMBOL(set_capacity);

20
block/ioctl.c
View File

@ -132,7 +132,7 @@ static int blk_ioctl_discard(struct block_device *bdev, fmode_t mode,
if (len & 511)
return -EINVAL;
if (start + len > i_size_read(bdev->bd_inode))
if (start + len > bdev_nr_bytes(bdev))
return -EINVAL;
err = truncate_bdev_range(bdev, mode, start, start + len - 1);
@ -164,7 +164,7 @@ static int blk_ioctl_zeroout(struct block_device *bdev, fmode_t mode,
return -EINVAL;
if (len & 511)
return -EINVAL;
if (end >= (uint64_t)i_size_read(bdev->bd_inode))
if (end >= (uint64_t)bdev_nr_bytes(bdev))
return -EINVAL;
if (end < start)
return -EINVAL;
@ -543,7 +543,6 @@ long blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
struct block_device *bdev = I_BDEV(file->f_mapping->host);
void __user *argp = (void __user *)arg;
fmode_t mode = file->f_mode;
loff_t size;
int ret;
/*
@ -570,10 +569,9 @@ long blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
return put_long(argp,
(bdev->bd_disk->bdi->ra_pages * PAGE_SIZE) / 512);
case BLKGETSIZE:
size = i_size_read(bdev->bd_inode);
if ((size >> 9) > ~0UL)
if (bdev_nr_sectors(bdev) > ~0UL)
return -EFBIG;
return put_ulong(argp, size >> 9);
return put_ulong(argp, bdev_nr_sectors(bdev));
/* The data is compatible, but the command number is different */
case BLKBSZGET: /* get block device soft block size (cf. BLKSSZGET) */
@ -581,7 +579,7 @@ long blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
case BLKBSZSET:
return blkdev_bszset(bdev, mode, argp);
case BLKGETSIZE64:
return put_u64(argp, i_size_read(bdev->bd_inode));
return put_u64(argp, bdev_nr_bytes(bdev));
/* Incompatible alignment on i386 */
case BLKTRACESETUP:
@ -615,7 +613,6 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
struct block_device *bdev = I_BDEV(file->f_mapping->host);
struct gendisk *disk = bdev->bd_disk;
fmode_t mode = file->f_mode;
loff_t size;
/*
* O_NDELAY can be altered using fcntl(.., F_SETFL, ..), so we have
@ -641,10 +638,9 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
return compat_put_long(argp,
(bdev->bd_disk->bdi->ra_pages * PAGE_SIZE) / 512);
case BLKGETSIZE:
size = i_size_read(bdev->bd_inode);
if ((size >> 9) > ~0UL)
if (bdev_nr_sectors(bdev) > ~0UL)
return -EFBIG;
return compat_put_ulong(argp, size >> 9);
return compat_put_ulong(argp, bdev_nr_sectors(bdev));
/* The data is compatible, but the command number is different */
case BLKBSZGET_32: /* get the logical block size (cf. BLKSSZGET) */
@ -652,7 +648,7 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
case BLKBSZSET_32:
return blkdev_bszset(bdev, mode, argp);
case BLKGETSIZE64_32:
return put_u64(argp, i_size_read(bdev->bd_inode));
return put_u64(argp, bdev_nr_bytes(bdev));
/* Incompatible alignment on i386 */
case BLKTRACESETUP32:

1
block/partitions/core.c
View File

@ -91,6 +91,7 @@ static void bdev_set_nr_sectors(struct block_device *bdev, sector_t sectors)
{
spin_lock(&bdev->bd_size_lock);
i_size_write(bdev->bd_inode, (loff_t)sectors << SECTOR_SHIFT);
bdev->bd_nr_sectors = sectors;
spin_unlock(&bdev->bd_size_lock);
}

2
block/partitions/efi.c
View File

@ -133,7 +133,7 @@ efi_crc32(const void *buf, unsigned long len)
*/
static u64 last_lba(struct gendisk *disk)
{
return div_u64(disk->part0->bd_inode->i_size,
return div_u64(bdev_nr_bytes(disk->part0),
queue_logical_block_size(disk->queue)) - 1ULL;
}

19
block/partitions/ibm.c
View File

@ -198,7 +198,7 @@ static int find_lnx1_partitions(struct parsed_partitions *state,
char name[],
union label_t *label,
sector_t labelsect,
loff_t i_size,
sector_t nr_sectors,
dasd_information2_t *info)
{
loff_t offset, geo_size, size;
@ -213,14 +213,14 @@ static int find_lnx1_partitions(struct parsed_partitions *state,
} else {
/*
* Formated w/o large volume support. If the sanity check
* 'size based on geo == size based on i_size' is true, then
* 'size based on geo == size based on nr_sectors' is true, then
* we can safely assume that we know the formatted size of
* the disk, otherwise we need additional information
* that we can only get from a real DASD device.
*/
geo_size = geo->cylinders * geo->heads
* geo->sectors * secperblk;
size = i_size >> 9;
size = nr_sectors;
if (size != geo_size) {
if (!info) {
strlcat(state->pp_buf, "\n", PAGE_SIZE);
@ -229,7 +229,7 @@ static int find_lnx1_partitions(struct parsed_partitions *state,
if (!strcmp(info->type, "ECKD"))
if (geo_size < size)
size = geo_size;
/* else keep size based on i_size */
/* else keep size based on nr_sectors */
}
}
/* first and only partition starts in the first block after the label */
@ -293,7 +293,8 @@ int ibm_partition(struct parsed_partitions *state)
struct gendisk *disk = state->disk;
struct block_device *bdev = disk->part0;
int blocksize, res;
loff_t i_size, offset, size;
loff_t offset, size;
sector_t nr_sectors;
dasd_information2_t *info;
struct hd_geometry *geo;
char type[5] = {0,};
@ -308,8 +309,8 @@ int ibm_partition(struct parsed_partitions *state)
blocksize = bdev_logical_block_size(bdev);
if (blocksize <= 0)
goto out_symbol;
i_size = i_size_read(bdev->bd_inode);
if (i_size == 0)
nr_sectors = bdev_nr_sectors(bdev);
if (nr_sectors == 0)
goto out_symbol;
info = kmalloc(sizeof(dasd_information2_t), GFP_KERNEL);
if (info == NULL)
@ -336,7 +337,7 @@ int ibm_partition(struct parsed_partitions *state)
label);
} else if (!strncmp(type, "LNX1", 4)) {
res = find_lnx1_partitions(state, geo, blocksize, name,
label, labelsect, i_size,
label, labelsect, nr_sectors,
info);
} else if (!strncmp(type, "CMS1", 4)) {
res = find_cms1_partitions(state, geo, blocksize, name,
@ -353,7 +354,7 @@ int ibm_partition(struct parsed_partitions *state)
res = 1;
if (info->format == DASD_FORMAT_LDL) {
strlcat(state->pp_buf, "(nonl)", PAGE_SIZE);
size = i_size >> 9;
size = nr_sectors;
offset = (info->label_block + 1) * (blocksize >> 9);
put_partition(state, 1, offset, size-offset);
strlcat(state->pp_buf, "\n", PAGE_SIZE);

3
drivers/block/drbd/drbd_int.h
View File

@ -1826,8 +1826,7 @@ static inline sector_t drbd_md_last_sector(struct drbd_backing_dev *bdev)
/* Returns the number of 512 byte sectors of the device */
static inline sector_t drbd_get_capacity(struct block_device *bdev)
{
/* return bdev ? get_capacity(bdev->bd_disk) : 0; */
return bdev ? i_size_read(bdev->bd_inode) >> 9 : 0;
return bdev ? bdev_nr_sectors(bdev) : 0;
}
/**

2
drivers/md/bcache/super.c
View File

@ -1002,7 +1002,7 @@ static void calc_cached_dev_sectors(struct cache_set *c)
struct cached_dev *dc;
list_for_each_entry(dc, &c->cached_devs, list)
sectors += bdev_sectors(dc->bdev);
sectors += bdev_nr_sectors(dc->bdev);
c->cached_dev_sectors = sectors;
}

4
drivers/md/bcache/util.h
View File

@ -559,8 +559,4 @@ static inline unsigned int fract_exp_two(unsigned int x,
void bch_bio_map(struct bio *bio, void *base);
int bch_bio_alloc_pages(struct bio *bio, gfp_t gfp_mask);
static inline sector_t bdev_sectors(struct block_device *bdev)
{
return bdev->bd_inode->i_size >> 9;
}
#endif /* _BCACHE_UTIL_H */

2
drivers/md/bcache/writeback.c
View File

@ -45,7 +45,7 @@ static uint64_t __calc_target_rate(struct cached_dev *dc)
* backing volume uses about 2% of the cache for dirty data.
*/
uint32_t bdev_share =
div64_u64(bdev_sectors(dc->bdev) << WRITEBACK_SHARE_SHIFT,
div64_u64(bdev_nr_sectors(dc->bdev) << WRITEBACK_SHARE_SHIFT,
c->cached_dev_sectors);
uint64_t cache_dirty_target =

2
drivers/md/dm-bufio.c
View File

@ -1525,7 +1525,7 @@ EXPORT_SYMBOL_GPL(dm_bufio_get_block_size);
sector_t dm_bufio_get_device_size(struct dm_bufio_client *c)
{
sector_t s = i_size_read(c->bdev->bd_inode) >> SECTOR_SHIFT;
sector_t s = bdev_nr_sectors(c->bdev);
if (s >= c->start)
s -= c->start;
else

2
drivers/md/dm-cache-metadata.c
View File

@ -334,7 +334,7 @@ static int __write_initial_superblock(struct dm_cache_metadata *cmd)
int r;
struct dm_block *sblock;
struct cache_disk_superblock *disk_super;
sector_t bdev_size = i_size_read(cmd->bdev->bd_inode) >> SECTOR_SHIFT;
sector_t bdev_size = bdev_nr_sectors(cmd->bdev);
/* FIXME: see if we can lose the max sectors limit */
if (bdev_size > DM_CACHE_METADATA_MAX_SECTORS)

2
drivers/md/dm-cache-target.c
View File

@ -1940,7 +1940,7 @@ static void cache_dtr(struct dm_target *ti)
static sector_t get_dev_size(struct dm_dev *dev)
{
return i_size_read(dev->bdev->bd_inode) >> SECTOR_SHIFT;
return bdev_nr_sectors(dev->bdev);
}
/*----------------------------------------------------------------*/

2
drivers/md/dm-clone-target.c
View File

@ -1514,7 +1514,7 @@ error:
static sector_t get_dev_size(struct dm_dev *dev)
{
return i_size_read(dev->bdev->bd_inode) >> SECTOR_SHIFT;
return bdev_nr_sectors(dev->bdev);
}
/*---------------------------------------------------------------------------*/

5
drivers/md/dm-dust.c
View File

@ -415,7 +415,7 @@ static int dust_message(struct dm_target *ti, unsigned int argc, char **argv,
char *result, unsigned int maxlen)
{
struct dust_device *dd = ti->private;
sector_t size = i_size_read(dd->dev->bdev->bd_inode) >> SECTOR_SHIFT;
sector_t size = bdev_nr_sectors(dd->dev->bdev);
bool invalid_msg = false;
int r = -EINVAL;
unsigned long long tmp, block;
@ -544,8 +544,7 @@ static int dust_prepare_ioctl(struct dm_target *ti, struct block_device **bdev)
/*
* Only pass ioctls through if the device sizes match exactly.
*/
if (dd->start ||
ti->len != i_size_read(dev->bdev->bd_inode) >> SECTOR_SHIFT)
if (dd->start || ti->len != bdev_nr_sectors(dev->bdev))
return 1;
return 0;

2
drivers/md/dm-ebs-target.c
View File

@ -416,7 +416,7 @@ static int ebs_prepare_ioctl(struct dm_target *ti, struct block_device **bdev)
* Only pass ioctls through if the device sizes match exactly.
*/
*bdev = dev->bdev;
return !!(ec->start || ti->len != i_size_read(dev->bdev->bd_inode) >> SECTOR_SHIFT);
return !!(ec->start || ti->len != bdev_nr_sectors(dev->bdev));
}
static void ebs_io_hints(struct dm_target *ti, struct queue_limits *limits)

2
drivers/md/dm-era-target.c
View File

@ -1681,7 +1681,7 @@ static int era_message(struct dm_target *ti, unsigned argc, char **argv,
static sector_t get_dev_size(struct dm_dev *dev)
{
return i_size_read(dev->bdev->bd_inode) >> SECTOR_SHIFT;
return bdev_nr_sectors(dev->bdev);
}
static int era_iterate_devices(struct dm_target *ti,

2
drivers/md/dm-exception-store.h
View File

@ -168,7 +168,7 @@ static inline void dm_consecutive_chunk_count_dec(struct dm_exception *e)
*/
static inline sector_t get_dev_size(struct block_device *bdev)
{
return i_size_read(bdev->bd_inode) >> SECTOR_SHIFT;
return bdev_nr_sectors(bdev);
}
static inline chunk_t sector_to_chunk(struct dm_exception_store *store,

3
drivers/md/dm-flakey.c
View File

@ -456,8 +456,7 @@ static int flakey_prepare_ioctl(struct dm_target *ti, struct block_device **bdev
/*
* Only pass ioctls through if the device sizes match exactly.
*/
if (fc->start ||
ti->len != i_size_read((*bdev)->bd_inode) >> SECTOR_SHIFT)
if (fc->start || ti->len != bdev_nr_sectors((*bdev)))
return 1;
return 0;
}

6
drivers/md/dm-integrity.c
View File

@ -4113,11 +4113,11 @@ static int dm_integrity_ctr(struct dm_target *ti, unsigned argc, char **argv)
}
}
ic->data_device_sectors = i_size_read(ic->dev->bdev->bd_inode) >> SECTOR_SHIFT;
ic->data_device_sectors = bdev_nr_sectors(ic->dev->bdev);
if (!ic->meta_dev)
ic->meta_device_sectors = ic->data_device_sectors;
else
ic->meta_device_sectors = i_size_read(ic->meta_dev->bdev->bd_inode) >> SECTOR_SHIFT;
ic->meta_device_sectors = bdev_nr_sectors(ic->meta_dev->bdev);
if (!journal_sectors) {
journal_sectors = min((sector_t)DEFAULT_MAX_JOURNAL_SECTORS,
@ -4367,7 +4367,7 @@ try_smaller_buffer:
DEBUG_print(" journal_sections %u\n", (unsigned)le32_to_cpu(ic->sb->journal_sections));
DEBUG_print(" journal_entries %u\n", ic->journal_entries);
DEBUG_print(" log2_interleave_sectors %d\n", ic->sb->log2_interleave_sectors);
DEBUG_print(" data_device_sectors 0x%llx\n", i_size_read(ic->dev->bdev->bd_inode) >> SECTOR_SHIFT);
DEBUG_print(" data_device_sectors 0x%llx\n", bdev_nr_sectors(ic->dev->bdev));
DEBUG_print(" initial_sectors 0x%x\n", ic->initial_sectors);
DEBUG_print(" metadata_run 0x%x\n", ic->metadata_run);
DEBUG_print(" log2_metadata_run %d\n", ic->log2_metadata_run);

3
drivers/md/dm-linear.c
View File

@ -135,8 +135,7 @@ static int linear_prepare_ioctl(struct dm_target *ti, struct block_device **bdev
/*
* Only pass ioctls through if the device sizes match exactly.
*/
if (lc->start ||
ti->len != i_size_read(dev->bdev->bd_inode) >> SECTOR_SHIFT)
if (lc->start || ti->len != bdev_nr_sectors(dev->bdev))
return 1;
return 0;
}

4
drivers/md/dm-log-writes.c
View File

@ -446,7 +446,7 @@ static int log_super(struct log_writes_c *lc)
static inline sector_t logdev_last_sector(struct log_writes_c *lc)
{
return i_size_read(lc->logdev->bdev->bd_inode) >> SECTOR_SHIFT;
return bdev_nr_sectors(lc->logdev->bdev);
}
static int log_writes_kthread(void *arg)
@ -851,7 +851,7 @@ static int log_writes_prepare_ioctl(struct dm_target *ti,
/*
* Only pass ioctls through if the device sizes match exactly.
*/
if (ti->len != i_size_read(dev->bdev->bd_inode) >> SECTOR_SHIFT)
if (ti->len != bdev_nr_sectors(dev->bdev))
return 1;
return 0;
}

2
drivers/md/dm-log.c
View File

@ -447,7 +447,7 @@ static int create_log_context(struct dm_dirty_log *log, struct dm_target *ti,
bdev_logical_block_size(lc->header_location.
bdev));
if (buf_size > i_size_read(dev->bdev->bd_inode)) {
if (buf_size > bdev_nr_bytes(dev->bdev)) {
DMWARN("log device %s too small: need %llu bytes",
dev->name, (unsigned long long)buf_size);
kfree(lc);

2
drivers/md/dm-mpath.c
View File

@ -2061,7 +2061,7 @@ static int multipath_prepare_ioctl(struct dm_target *ti,
/*
* Only pass ioctls through if the device sizes match exactly.
*/
if (!r && ti->len != i_size_read((*bdev)->bd_inode) >> SECTOR_SHIFT)
if (!r && ti->len != bdev_nr_sectors((*bdev)))
return 1;
return r;
}

6
drivers/md/dm-raid.c
View File

@ -1261,7 +1261,7 @@ static int parse_raid_params(struct raid_set *rs, struct dm_arg_set *as,
md_rdev_init(jdev);
jdev->mddev = &rs->md;
jdev->bdev = rs->journal_dev.dev->bdev;
jdev->sectors = to_sector(i_size_read(jdev->bdev->bd_inode));
jdev->sectors = bdev_nr_sectors(jdev->bdev);
if (jdev->sectors < MIN_RAID456_JOURNAL_SPACE) {
rs->ti->error = "No space for raid4/5/6 journal";
return -ENOSPC;
@ -1607,7 +1607,7 @@ static int _check_data_dev_sectors(struct raid_set *rs)
rdev_for_each(rdev, &rs->md)
if (!test_bit(Journal, &rdev->flags) && rdev->bdev) {
ds = min(ds, to_sector(i_size_read(rdev->bdev->bd_inode)));
ds = min(ds, bdev_nr_sectors(rdev->bdev));
if (ds < rs->md.dev_sectors) {
rs->ti->error = "Component device(s) too small";
return -EINVAL;
@ -2662,7 +2662,7 @@ static int rs_adjust_data_offsets(struct raid_set *rs)
* Make sure we got a minimum amount of free sectors per device
*/
if (rs->data_offset &&
to_sector(i_size_read(rdev->bdev->bd_inode)) - rs->md.dev_sectors < MIN_FREE_RESHAPE_SPACE) {
bdev_nr_sectors(rdev->bdev) - rs->md.dev_sectors < MIN_FREE_RESHAPE_SPACE) {
rs->ti->error = data_offset ? "No space for forward reshape" :
"No space for backward reshape";
return -ENOSPC;

2
drivers/md/dm-switch.c
View File

@ -529,7 +529,7 @@ static int switch_prepare_ioctl(struct dm_target *ti, struct block_device **bdev
* Only pass ioctls through if the device sizes match exactly.
*/
if (ti->len + sctx->path_list[path_nr].start !=
i_size_read((*bdev)->bd_inode) >> SECTOR_SHIFT)
bdev_nr_sectors((*bdev)))
return 1;
return 0;
}

3
drivers/md/dm-table.c
View File

@ -227,8 +227,7 @@ static int device_area_is_invalid(struct dm_target *ti, struct dm_dev *dev,
{
struct queue_limits *limits = data;
struct block_device *bdev = dev->bdev;
sector_t dev_size =
i_size_read(bdev->bd_inode) >> SECTOR_SHIFT;
sector_t dev_size = bdev_nr_sectors(bdev);
unsigned short logical_block_size_sectors =
limits->logical_block_size >> SECTOR_SHIFT;
char b[BDEVNAME_SIZE];

2
drivers/md/dm-thin-metadata.c
View File

@ -549,7 +549,7 @@ static int __write_initial_superblock(struct dm_pool_metadata *pmd)
int r;
struct dm_block *sblock;
struct thin_disk_superblock *disk_super;
sector_t bdev_size = i_size_read(pmd->bdev->bd_inode) >> SECTOR_SHIFT;
sector_t bdev_size = bdev_nr_sectors(pmd->bdev);
if (bdev_size > THIN_METADATA_MAX_SECTORS)
bdev_size = THIN_METADATA_MAX_SECTORS;

2
drivers/md/dm-thin.c
View File

@ -3212,7 +3212,7 @@ static int metadata_pre_commit_callback(void *context)
static sector_t get_dev_size(struct block_device *bdev)
{
return i_size_read(bdev->bd_inode) >> SECTOR_SHIFT;
return bdev_nr_sectors(bdev);
}
static void warn_if_metadata_device_too_big(struct block_device *bdev)

3
drivers/md/dm-verity-target.c
View File

@ -834,8 +834,7 @@ static int verity_prepare_ioctl(struct dm_target *ti, struct block_device **bdev
*bdev = v->data_dev->bdev;
if (v->data_start ||
ti->len != i_size_read(v->data_dev->bdev->bd_inode) >> SECTOR_SHIFT)
if (v->data_start || ti->len != bdev_nr_sectors(v->data_dev->bdev))
return 1;
return 0;
}

2
drivers/md/dm-writecache.c
View File

@ -2341,7 +2341,7 @@ static int writecache_ctr(struct dm_target *ti, unsigned argc, char **argv)
ti->error = "Cache data device lookup failed";
goto bad;
}
wc->memory_map_size = i_size_read(wc->ssd_dev->bdev->bd_inode);
wc->memory_map_size = bdev_nr_bytes(wc->ssd_dev->bdev);
/*
* Parse the cache block size

2
drivers/md/dm-zoned-target.c
View File

@ -733,7 +733,7 @@ static int dmz_get_zoned_device(struct dm_target *ti, char *path,
dev->dev_idx = idx;
(void)bdevname(dev->bdev, dev->name);
dev->capacity = i_size_read(bdev->bd_inode) >> SECTOR_SHIFT;
dev->capacity = bdev_nr_sectors(bdev);
if (ti->begin) {
ti->error = "Partial mapping is not supported";
goto err;

26
drivers/md/md.c
View File

@ -888,8 +888,7 @@ static struct md_personality *find_pers(int level, char *clevel)
/* return the offset of the super block in 512byte sectors */
static inline sector_t calc_dev_sboffset(struct md_rdev *rdev)
{
sector_t num_sectors = i_size_read(rdev->bdev->bd_inode) / 512;
return MD_NEW_SIZE_SECTORS(num_sectors);
return MD_NEW_SIZE_SECTORS(bdev_nr_sectors(rdev->bdev));
}
static int alloc_disk_sb(struct md_rdev *rdev)
@ -1631,8 +1630,7 @@ static int super_1_load(struct md_rdev *rdev, struct md_rdev *refdev, int minor_
*/
switch(minor_version) {
case 0:
sb_start = i_size_read(rdev->bdev->bd_inode) >> 9;
sb_start -= 8*2;
sb_start = bdev_nr_sectors(rdev->bdev) - 8 * 2;
sb_start &= ~(sector_t)(4*2-1);
break;
case 1:
@ -1787,10 +1785,9 @@ static int super_1_load(struct md_rdev *rdev, struct md_rdev *refdev, int minor_
else
ret = 0;
}
if (minor_version) {
sectors = (i_size_read(rdev->bdev->bd_inode) >> 9);
sectors -= rdev->data_offset;
} else
if (minor_version)
sectors = bdev_nr_sectors(rdev->bdev) - rdev->data_offset;
else
sectors = rdev->sb_start;
if (sectors < le64_to_cpu(sb->data_size))
return -EINVAL;
@ -2168,8 +2165,7 @@ super_1_rdev_size_change(struct md_rdev *rdev, sector_t num_sectors)
return 0; /* too confusing */
if (rdev->sb_start < rdev->data_offset) {
/* minor versions 1 and 2; superblock before data */
max_sectors = i_size_read(rdev->bdev->bd_inode) >> 9;
max_sectors -= rdev->data_offset;
max_sectors = bdev_nr_sectors(rdev->bdev) - rdev->data_offset;
if (!num_sectors || num_sectors > max_sectors)
num_sectors = max_sectors;
} else if (rdev->mddev->bitmap_info.offset) {
@ -2178,7 +2174,7 @@ super_1_rdev_size_change(struct md_rdev *rdev, sector_t num_sectors)
} else {
/* minor version 0; superblock after data */
sector_t sb_start, bm_space;
sector_t dev_size = i_size_read(rdev->bdev->bd_inode) >> 9;
sector_t dev_size = bdev_nr_sectors(rdev->bdev);
/* 8K is for superblock */
sb_start = dev_size - 8*2;
@ -3391,7 +3387,7 @@ rdev_size_store(struct md_rdev *rdev, const char *buf, size_t len)
if (!sectors)
return -EBUSY;
} else if (!sectors)
sectors = (i_size_read(rdev->bdev->bd_inode) >> 9) -
sectors = bdev_nr_sectors(rdev->bdev) -
rdev->data_offset;
if (!my_mddev->pers->resize)
/* Cannot change size for RAID0 or Linear etc */
@ -3718,7 +3714,7 @@ static struct md_rdev *md_import_device(dev_t newdev, int super_format, int supe
kobject_init(&rdev->kobj, &rdev_ktype);
size = i_size_read(rdev->bdev->bd_inode) >> BLOCK_SIZE_BITS;
size = bdev_nr_bytes(rdev->bdev) >> BLOCK_SIZE_BITS;
if (!size) {
pr_warn("md: %s has zero or unknown size, marking faulty!\n",
bdevname(rdev->bdev,b));
@ -6896,7 +6892,7 @@ int md_add_new_disk(struct mddev *mddev, struct mdu_disk_info_s *info)
if (!mddev->persistent) {
pr_debug("md: nonpersistent superblock ...\n");
rdev->sb_start = i_size_read(rdev->bdev->bd_inode) / 512;
rdev->sb_start = bdev_nr_sectors(rdev->bdev);
} else
rdev->sb_start = calc_dev_sboffset(rdev);
rdev->sectors = rdev->sb_start;
@ -6983,7 +6979,7 @@ static int hot_add_disk(struct mddev *mddev, dev_t dev)
if (mddev->persistent)
rdev->sb_start = calc_dev_sboffset(rdev);
else
rdev->sb_start = i_size_read(rdev->bdev->bd_inode) / 512;
rdev->sb_start = bdev_nr_sectors(rdev->bdev);
rdev->sectors = rdev->sb_start;

4
drivers/nvme/target/io-cmd-bdev.c
View File

@ -87,7 +87,7 @@ int nvmet_bdev_ns_enable(struct nvmet_ns *ns)
ns->bdev = NULL;
return ret;
}
ns->size = i_size_read(ns->bdev->bd_inode);
ns->size = bdev_nr_bytes(ns->bdev);
ns->blksize_shift = blksize_bits(bdev_logical_block_size(ns->bdev));
ns->pi_type = 0;
@ -108,7 +108,7 @@ int nvmet_bdev_ns_enable(struct nvmet_ns *ns)
void nvmet_bdev_ns_revalidate(struct nvmet_ns *ns)
{
ns->size = i_size_read(ns->bdev->bd_inode);
ns->size = bdev_nr_bytes(ns->bdev);
}
u16 blk_to_nvme_status(struct nvmet_req *req, blk_status_t blk_sts)

4
drivers/target/target_core_iblock.c
View File

@ -232,9 +232,9 @@ static unsigned long long iblock_emulate_read_cap_with_block_size(
struct block_device *bd,
struct request_queue *q)
{
unsigned long long blocks_long = (div_u64(i_size_read(bd->bd_inode),
bdev_logical_block_size(bd)) - 1);
u32 block_size = bdev_logical_block_size(bd);
unsigned long long blocks_long =
div_u64(bdev_nr_bytes(bd), block_size) - 1;
if (block_size == dev->dev_attrib.block_size)
return blocks_long;

2
fs/affs/super.c
View File

@ -389,7 +389,7 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent)
* blocks, we will have to change it.
*/
size = i_size_read(sb->s_bdev->bd_inode) >> 9;
size = bdev_nr_sectors(sb->s_bdev);
pr_debug("initial blocksize=%d, #blocks=%d\n", 512, size);
affs_set_blocksize(sb, PAGE_SIZE);

3
fs/btrfs/dev-replace.c
View File

@ -283,8 +283,7 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
}
if (i_size_read(bdev->bd_inode) <
btrfs_device_get_total_bytes(srcdev)) {
if (bdev_nr_bytes(bdev) < btrfs_device_get_total_bytes(srcdev)) {
btrfs_err(fs_info,
"target device is smaller than source device!");
ret = -EINVAL;

2
fs/btrfs/disk-io.c
View File

@ -3740,7 +3740,7 @@ struct btrfs_super_block *btrfs_read_dev_one_super(struct block_device *bdev,
else if (ret)
return ERR_PTR(ret);
if (bytenr + BTRFS_SUPER_INFO_SIZE >= i_size_read(bdev->bd_inode))
if (bytenr + BTRFS_SUPER_INFO_SIZE >= bdev_nr_bytes(bdev))
return ERR_PTR(-EINVAL);
page = read_cache_page_gfp(mapping, bytenr >> PAGE_SHIFT, GFP_NOFS);

4
fs/btrfs/ioctl.c
View File

@ -1730,7 +1730,7 @@ static noinline int btrfs_ioctl_resize(struct file *file,
}
if (!strcmp(sizestr, "max"))
new_size = device->bdev->bd_inode->i_size;
new_size = bdev_nr_bytes(device->bdev);
else {
if (sizestr[0] == '-') {
mod = -1;
@ -1771,7 +1771,7 @@ static noinline int btrfs_ioctl_resize(struct file *file,
ret = -EINVAL;
goto out_finish;
}
if (new_size > device->bdev->bd_inode->i_size) {
if (new_size > bdev_nr_bytes(device->bdev)) {
ret = -EFBIG;
goto out_finish;
}

8
fs/btrfs/volumes.c
View File

@ -1286,7 +1286,7 @@ static struct btrfs_super_block *btrfs_read_disk_super(struct block_device *bdev
pgoff_t index;
/* make sure our super fits in the device */
if (bytenr + PAGE_SIZE >= i_size_read(bdev->bd_inode))
if (bytenr + PAGE_SIZE >= bdev_nr_bytes(bdev))
return ERR_PTR(-EINVAL);
/* make sure our super fits in the page */
@ -2610,8 +2610,8 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
device->io_width = fs_info->sectorsize;
device->io_align = fs_info->sectorsize;
device->sector_size = fs_info->sectorsize;
device->total_bytes = round_down(i_size_read(bdev->bd_inode),
fs_info->sectorsize);
device->total_bytes =
round_down(bdev_nr_bytes(bdev), fs_info->sectorsize);
device->disk_total_bytes = device->total_bytes;
device->commit_total_bytes = device->total_bytes;
set_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
@ -7236,7 +7236,7 @@ static int read_one_dev(struct extent_buffer *leaf,
fill_device_from_item(leaf, dev_item, device);
if (device->bdev) {
u64 max_total_bytes = i_size_read(device->bdev->bd_inode);
u64 max_total_bytes = bdev_nr_bytes(device->bdev);
if (device->total_bytes > max_total_bytes) {
btrfs_err(fs_info,

4
fs/buffer.c
View File

@ -878,7 +878,7 @@ link_dev_buffers(struct page *page, struct buffer_head *head)
static sector_t blkdev_max_block(struct block_device *bdev, unsigned int size)
{
sector_t retval = ~((sector_t)0);
loff_t sz = i_size_read(bdev->bd_inode);
loff_t sz = bdev_nr_bytes(bdev);
if (sz) {
unsigned int sizebits = blksize_bits(size);
@ -897,7 +897,7 @@ init_page_buffers(struct page *page, struct block_device *bdev,
struct buffer_head *head = page_buffers(page);
struct buffer_head *bh = head;
int uptodate = PageUptodate(page);
sector_t end_block = blkdev_max_block(I_BDEV(bdev->bd_inode), size);
sector_t end_block = blkdev_max_block(bdev, size);
do {
if (!buffer_mapped(bh)) {

2
fs/cramfs/inode.c
View File

@ -209,7 +209,7 @@ static void *cramfs_blkdev_read(struct super_block *sb, unsigned int offset,
return read_buffers[i] + blk_offset;
}
devsize = mapping->host->i_size >> PAGE_SHIFT;
devsize = bdev_nr_bytes(sb->s_bdev) >> PAGE_SHIFT;
/* Ok, read in BLKS_PER_BUF pages completely first. */
for (i = 0; i < BLKS_PER_BUF; i++) {

2
fs/ext4/super.c
View File

@ -4474,7 +4474,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
goto cantfind_ext4;
/* check blocks count against device size */
blocks_count = sb->s_bdev->bd_inode->i_size >> sb->s_blocksize_bits;
blocks_count = sb_bdev_nr_blocks(sb);
if (blocks_count && ext4_blocks_count(es) > blocks_count) {
ext4_msg(sb, KERN_WARNING, "bad geometry: block count %llu "
"exceeds size of device (%llu blocks)",

5
fs/fat/inode.c
View File

@ -1536,14 +1536,11 @@ static int fat_read_static_bpb(struct super_block *sb,
struct fat_bios_param_block *bpb)
{
static const char *notdos1x = "This doesn't look like a DOS 1.x volume";
sector_t bd_sects = bdev_nr_sectors(sb->s_bdev);
struct fat_floppy_defaults *fdefaults = NULL;
int error = -EINVAL;
sector_t bd_sects;
unsigned i;
bd_sects = i_size_read(sb->s_bdev->bd_inode) / SECTOR_SIZE;
/* 16-bit DOS 1.x reliably wrote bootstrap short-jmp code */
if (b->ignored[0] != 0xeb || b->ignored[2] != 0x90) {
if (!silent)

2
fs/hfs/mdb.c
View File

@ -36,7 +36,7 @@ static int hfs_get_last_session(struct super_block *sb,
/* default values */
*start = 0;
*size = i_size_read(sb->s_bdev->bd_inode) >> 9;
*size = bdev_nr_sectors(sb->s_bdev);
if (HFS_SB(sb)->session >= 0) {
struct cdrom_tocentry te;

2
fs/hfsplus/wrapper.c
View File

@ -131,7 +131,7 @@ static int hfsplus_get_last_session(struct super_block *sb,
/* default values */
*start = 0;
*size = i_size_read(sb->s_bdev->bd_inode) >> 9;
*size = bdev_nr_sectors(sb->s_bdev);
if (HFSPLUS_SB(sb)->session >= 0) {
struct cdrom_tocentry te;

5
fs/jfs/resize.c
View File

@ -86,8 +86,7 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
goto out;
}
VolumeSize = i_size_read(sb->s_bdev->bd_inode) >> sb->s_blocksize_bits;
VolumeSize = sb_bdev_nr_blocks(sb);
if (VolumeSize) {
if (newLVSize > VolumeSize) {
printk(KERN_WARNING "jfs_extendfs: invalid size\n");
@ -199,7 +198,7 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
txQuiesce(sb);
/* Reset size of direct inode */
sbi->direct_inode->i_size = i_size_read(sb->s_bdev->bd_inode);
sbi->direct_inode->i_size = bdev_nr_bytes(sb->s_bdev);
if (sbi->mntflag & JFS_INLINELOG) {
/*

5
fs/jfs/super.c
View File

@ -284,8 +284,7 @@ static int parse_options(char *options, struct super_block *sb, s64 *newLVSize,
}
case Opt_resize_nosize:
{
*newLVSize = i_size_read(sb->s_bdev->bd_inode) >>
sb->s_blocksize_bits;
*newLVSize = sb_bdev_nr_blocks(sb);
if (*newLVSize == 0)
pr_err("JFS: Cannot determine volume size\n");
break;
@ -551,7 +550,7 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent)
ret = -ENOMEM;
goto out_unload;
}
inode->i_size = i_size_read(sb->s_bdev->bd_inode);
inode->i_size = bdev_nr_bytes(sb->s_bdev);
inode->i_mapping->a_ops = &jfs_metapage_aops;
inode_fake_hash(inode);
mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);

4
fs/nfs/blocklayout/dev.c
View File

@ -252,7 +252,7 @@ bl_parse_simple(struct nfs_server *server, struct pnfs_block_dev *d,
d->bdev = bdev;
d->len = i_size_read(d->bdev->bd_inode);
d->len = bdev_nr_bytes(d->bdev);
d->map = bl_map_simple;
printk(KERN_INFO "pNFS: using block device %s\n",
@ -367,7 +367,7 @@ bl_parse_scsi(struct nfs_server *server, struct pnfs_block_dev *d,
return PTR_ERR(bdev);
d->bdev = bdev;
d->len = i_size_read(d->bdev->bd_inode);
d->len = bdev_nr_bytes(d->bdev);
d->map = bl_map_simple;
d->pr_key = v->scsi.pr_key;

2
fs/nilfs2/ioctl.c
View File

@ -1107,7 +1107,7 @@ static int nilfs_ioctl_set_alloc_range(struct inode *inode, void __user *argp)
goto out;
ret = -ERANGE;
if (range[1] > i_size_read(inode->i_sb->s_bdev->bd_inode))
if (range[1] > bdev_nr_bytes(inode->i_sb->s_bdev))
goto out;
segbytes = nilfs->ns_blocks_per_segment * nilfs->ns_blocksize;

2
fs/nilfs2/super.c
View File

@ -403,7 +403,7 @@ int nilfs_resize_fs(struct super_block *sb, __u64 newsize)
int ret;
ret = -ERANGE;
devsize = i_size_read(sb->s_bdev->bd_inode);
devsize = bdev_nr_bytes(sb->s_bdev);
if (newsize > devsize)
goto out;

2
fs/nilfs2/the_nilfs.c
View File

@ -489,7 +489,7 @@ static int nilfs_load_super_block(struct the_nilfs *nilfs,
{
struct nilfs_super_block **sbp = nilfs->ns_sbp;
struct buffer_head **sbh = nilfs->ns_sbh;
u64 sb2off = NILFS_SB2_OFFSET_BYTES(nilfs->ns_bdev->bd_inode->i_size);
u64 sb2off = NILFS_SB2_OFFSET_BYTES(bdev_nr_bytes(nilfs->ns_bdev));
int valid[2], swp = 0;
sbp[0] = nilfs_read_super_block(sb, NILFS_SB_OFFSET_BYTES, blocksize,

8
fs/ntfs/super.c
View File

@ -2772,13 +2772,12 @@ static int ntfs_fill_super(struct super_block *sb, void *opt, const int silent)
ntfs_debug("Set device block size to %i bytes (block size bits %i).",
blocksize, sb->s_blocksize_bits);
/* Determine the size of the device in units of block_size bytes. */
if (!i_size_read(sb->s_bdev->bd_inode)) {
vol->nr_blocks = sb_bdev_nr_blocks(sb);
if (!vol->nr_blocks) {
if (!silent)
ntfs_error(sb, "Unable to determine device size.");
goto err_out_now;
}
vol->nr_blocks = i_size_read(sb->s_bdev->bd_inode) >>
sb->s_blocksize_bits;
/* Read the boot sector and return unlocked buffer head to it. */
if (!(bh = read_ntfs_boot_sector(sb, silent))) {
if (!silent)
@ -2816,8 +2815,7 @@ static int ntfs_fill_super(struct super_block *sb, void *opt, const int silent)
goto err_out_now;
}
BUG_ON(blocksize != sb->s_blocksize);
vol->nr_blocks = i_size_read(sb->s_bdev->bd_inode) >>
sb->s_blocksize_bits;
vol->nr_blocks = sb_bdev_nr_blocks(sb);
ntfs_debug("Changed device block size to %i bytes (block size "
"bits %i) to match volume sector size.",
blocksize, sb->s_blocksize_bits);

2
fs/ntfs3/super.c
View File

@ -921,7 +921,7 @@ static int ntfs_fill_super(struct super_block *sb, struct fs_context *fc)
/* Parse boot. */
err = ntfs_init_from_boot(sb, rq ? queue_logical_block_size(rq) : 512,
bdev->bd_inode->i_size);
bdev_nr_bytes(bdev));
if (err)
goto out;

8
fs/pstore/blk.c
View File

@ -205,7 +205,6 @@ static ssize_t psblk_generic_blk_write(const char *buf, size_t bytes,
static int __register_pstore_blk(struct pstore_device_info *dev,
const char *devpath)
{
struct inode *inode;
int ret = -ENODEV;
lockdep_assert_held(&pstore_blk_lock);
@ -217,14 +216,13 @@ static int __register_pstore_blk(struct pstore_device_info *dev,
goto err;
}
inode = file_inode(psblk_file);
if (!S_ISBLK(inode->i_mode)) {
if (!S_ISBLK(file_inode(psblk_file)->i_mode)) {
pr_err("'%s' is not block device!\n", devpath);
goto err_fput;
}
inode = I_BDEV(psblk_file->f_mapping->host)->bd_inode;
dev->zone.total_size = i_size_read(inode);
dev->zone.total_size =
bdev_nr_bytes(I_BDEV(psblk_file->f_mapping->host));
ret = __register_pstore_device(dev);
if (ret)

8
fs/reiserfs/super.c
View File

@ -1199,9 +1199,7 @@ static int reiserfs_parse_options(struct super_block *s,
if (!strcmp(arg, "auto")) {
/* From JFS code, to auto-get the size. */
*blocks =
i_size_read(s->s_bdev->bd_inode) >> s->
s_blocksize_bits;
*blocks = sb_bdev_nr_blocks(s);
} else {
*blocks = simple_strtoul(arg, &p, 0);
if (*p != '\0') {
@ -1986,9 +1984,7 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
* smaller than the filesystem. If the check fails then abort and
* scream, because bad stuff will happen otherwise.
*/
if (s->s_bdev && s->s_bdev->bd_inode
&& i_size_read(s->s_bdev->bd_inode) <
sb_block_count(rs) * sb_blocksize(rs)) {
if (bdev_nr_bytes(s->s_bdev) < sb_block_count(rs) * sb_blocksize(rs)) {
SWARN(silent, s, "", "Filesystem cannot be "
"mounted because it is bigger than the device");
SWARN(silent, s, "", "You may need to run fsck "

5
fs/squashfs/super.c
View File

@ -16,6 +16,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/blkdev.h>
#include <linux/fs.h>
#include <linux/fs_context.h>
#include <linux/fs_parser.h>
@ -179,8 +180,8 @@ static int squashfs_fill_super(struct super_block *sb, struct fs_context *fc)
/* Check the filesystem does not extend beyond the end of the
block device */
msblk->bytes_used = le64_to_cpu(sblk->bytes_used);
if (msblk->bytes_used < 0 || msblk->bytes_used >
i_size_read(sb->s_bdev->bd_inode))
if (msblk->bytes_used < 0 ||
msblk->bytes_used > bdev_nr_bytes(sb->s_bdev))
goto failed_mount;
/* Check block size for sanity */

5
fs/udf/lowlevel.c
View File

@ -47,8 +47,7 @@ unsigned int udf_get_last_session(struct super_block *sb)
unsigned long udf_get_last_block(struct super_block *sb)
{
struct block_device *bdev = sb->s_bdev;
struct cdrom_device_info *cdi = disk_to_cdi(bdev->bd_disk);
struct cdrom_device_info *cdi = disk_to_cdi(sb->s_bdev->bd_disk);
unsigned long lblock = 0;
/*
@ -56,7 +55,7 @@ unsigned long udf_get_last_block(struct super_block *sb)
* Try using the device size...
*/
if (!cdi || cdrom_get_last_written(cdi, &lblock) || lblock == 0)
lblock = i_size_read(bdev->bd_inode) >> sb->s_blocksize_bits;
lblock = sb_bdev_nr_blocks(sb);
if (lblock)
return lblock - 1;

9
fs/udf/super.c
View File

@ -1175,8 +1175,7 @@ static int udf_load_vat(struct super_block *sb, int p_index, int type1_index)
struct udf_inode_info *vati;
uint32_t pos;
struct virtualAllocationTable20 *vat20;
sector_t blocks = i_size_read(sb->s_bdev->bd_inode) >>
sb->s_blocksize_bits;
sector_t blocks = sb_bdev_nr_blocks(sb);
udf_find_vat_block(sb, p_index, type1_index, sbi->s_last_block);
if (!sbi->s_vat_inode &&
@ -1838,8 +1837,7 @@ static int udf_check_anchor_block(struct super_block *sb, sector_t block,
int ret;
if (UDF_QUERY_FLAG(sb, UDF_FLAG_VARCONV) &&
udf_fixed_to_variable(block) >=
i_size_read(sb->s_bdev->bd_inode) >> sb->s_blocksize_bits)
udf_fixed_to_variable(block) >= sb_bdev_nr_blocks(sb))
return -EAGAIN;
bh = udf_read_tagged(sb, block, block, &ident);
@ -1901,8 +1899,7 @@ static int udf_scan_anchors(struct super_block *sb, sector_t *lastblock,
last[last_count++] = *lastblock - 152;
for (i = 0; i < last_count; i++) {
if (last[i] >= i_size_read(sb->s_bdev->bd_inode) >>
sb->s_blocksize_bits)
if (last[i] >= sb_bdev_nr_blocks(sb))
continue;
ret = udf_check_anchor_block(sb, last[i], fileset);
if (ret != -EAGAIN) {

18
include/linux/blk_types.h
View File

@ -20,8 +20,26 @@ struct cgroup_subsys_state;
typedef void (bio_end_io_t) (struct bio *);
struct bio_crypt_ctx;
/*
* The basic unit of block I/O is a sector. It is used in a number of contexts
* in Linux (blk, bio, genhd). The size of one sector is 512 = 2**9
* bytes. Variables of type sector_t represent an offset or size that is a
* multiple of 512 bytes. Hence these two constants.
*/
#ifndef SECTOR_SHIFT
#define SECTOR_SHIFT 9
#endif
#ifndef SECTOR_SIZE
#define SECTOR_SIZE (1 << SECTOR_SHIFT)
#endif
#define PAGE_SECTORS_SHIFT (PAGE_SHIFT - SECTOR_SHIFT)
#define PAGE_SECTORS (1 << PAGE_SECTORS_SHIFT)
#define SECTOR_MASK (PAGE_SECTORS - 1)
struct block_device {
sector_t bd_start_sect;
sector_t bd_nr_sectors;
struct disk_stats __percpu *bd_stats;
unsigned long bd_stamp;
bool bd_read_only; /* read-only policy */

17
include/linux/blkdev.h
View File

@ -621,23 +621,6 @@ static inline struct request_queue *bdev_get_queue(struct block_device *bdev)
return bdev->bd_queue; /* this is never NULL */
}
/*
* The basic unit of block I/O is a sector. It is used in a number of contexts
* in Linux (blk, bio, genhd). The size of one sector is 512 = 2**9
* bytes. Variables of type sector_t represent an offset or size that is a
* multiple of 512 bytes. Hence these two constants.
*/
#ifndef SECTOR_SHIFT
#define SECTOR_SHIFT 9
#endif
#ifndef SECTOR_SIZE
#define SECTOR_SIZE (1 << SECTOR_SHIFT)
#endif
#define PAGE_SECTORS_SHIFT (PAGE_SHIFT - SECTOR_SHIFT)
#define PAGE_SECTORS (1 << PAGE_SECTORS_SHIFT)
#define SECTOR_MASK (PAGE_SECTORS - 1)
#ifdef CONFIG_BLK_DEV_ZONED
/* Helper to convert BLK_ZONE_ZONE_XXX to its string format XXX */

13
include/linux/genhd.h
View File

@ -245,7 +245,12 @@ static inline sector_t get_start_sect(struct block_device *bdev)
static inline sector_t bdev_nr_sectors(struct block_device *bdev)
{
return i_size_read(bdev->bd_inode) >> 9;
return bdev->bd_nr_sectors;
}
static inline loff_t bdev_nr_bytes(struct block_device *bdev)
{
return bdev_nr_sectors(bdev) << SECTOR_SHIFT;
}
static inline sector_t get_capacity(struct gendisk *disk)
@ -253,6 +258,12 @@ static inline sector_t get_capacity(struct gendisk *disk)
return bdev_nr_sectors(disk->part0);
}
static inline u64 sb_bdev_nr_blocks(struct super_block *sb)
{
return bdev_nr_sectors(sb->s_bdev) >>
(sb->s_blocksize_bits - SECTOR_SHIFT);
}
int bdev_disk_changed(struct gendisk *disk, bool invalidate);
void blk_drop_partitions(struct gendisk *disk);