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OpenCloudOS-Kernel
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loop: get rid of lo_blocksize 

This is only used for setting the soft block size on the struct
block_device once and then never used again.

Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Omar Sandoval 2017-08-24 00:03:41 -07:00 committed by Jens Axboe
parent 24d90bb2f3
commit 8a0740c410
2 changed files with 2 additions and 9 deletions
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10
drivers/block/loop.c
View File

@ -573,8 +573,6 @@ static void do_loop_switch(struct loop_device *lo, struct switch_request *p)
mapping = file->f_mapping;
mapping_set_gfp_mask(old_file->f_mapping, lo->old_gfp_mask);
lo->lo_backing_file = file;
lo->lo_blocksize = S_ISBLK(mapping->host->i_mode) ?
mapping->host->i_bdev->bd_block_size : PAGE_SIZE;
lo->old_gfp_mask = mapping_gfp_mask(mapping);
mapping_set_gfp_mask(mapping, lo->old_gfp_mask & ~(__GFP_IO|__GFP_FS));
loop_update_dio(lo);
@ -867,7 +865,6 @@ static int loop_set_fd(struct loop_device *lo, fmode_t mode,
struct file *file, *f;
struct inode *inode;
struct address_space *mapping;
unsigned lo_blocksize;
int lo_flags = 0;
int error;
loff_t size;
@ -911,9 +908,6 @@ static int loop_set_fd(struct loop_device *lo, fmode_t mode,
!file->f_op->write_iter)
lo_flags |= LO_FLAGS_READ_ONLY;
lo_blocksize = S_ISBLK(inode->i_mode) ?
inode->i_bdev->bd_block_size : PAGE_SIZE;
error = -EFBIG;
size = get_loop_size(lo, file);
if ((loff_t)(sector_t)size != size)
@ -927,7 +921,6 @@ static int loop_set_fd(struct loop_device *lo, fmode_t mode,
set_device_ro(bdev, (lo_flags & LO_FLAGS_READ_ONLY) != 0);
lo->use_dio = false;
lo->lo_blocksize = lo_blocksize;
lo->lo_device = bdev;
lo->lo_flags = lo_flags;
lo->lo_backing_file = file;
@ -947,7 +940,8 @@ static int loop_set_fd(struct loop_device *lo, fmode_t mode,
/* let user-space know about the new size */
kobject_uevent(&disk_to_dev(bdev->bd_disk)->kobj, KOBJ_CHANGE);
set_blocksize(bdev, lo_blocksize);
set_blocksize(bdev, S_ISBLK(inode->i_mode) ?
block_size(inode->i_bdev) : PAGE_SIZE);
lo->lo_state = Lo_bound;
if (part_shift)

1
drivers/block/loop.h
View File

@ -48,7 +48,6 @@ struct loop_device {
struct file * lo_backing_file;
struct block_device *lo_device;
unsigned lo_blocksize;
void *key_data;
gfp_t old_gfp_mask;