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cramfs: use bdev_nr_bytes instead of open coding it
author
Christoph Hellwig
<hch@lst.de>
Mon, 18 Oct 2021 10:11:13 +0000
(12:11 +0200)
committer
Jens Axboe
<axboe@kernel.dk>
Mon, 18 Oct 2021 20:43:22 +0000
(14:43 -0600)
Use the proper helper to read the block device size.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link:
https://lore.kernel.org/r/20211018101130.1838532-14-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
fs/cramfs/inode.c
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diff --git
a/fs/cramfs/inode.c
b/fs/cramfs/inode.c
index
2be6526
..
666aa38
100644
(file)
--- a/
fs/cramfs/inode.c
+++ b/
fs/cramfs/inode.c
@@
-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++) {