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block: Call blkdev_dio_unaligned() from blkdev_direct_IO()

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blkdev_dio_unaligned() is called from __blkdev_direct_IO(),
__blkdev_direct_IO_simple(), and __blkdev_direct_IO_async(), and all these
are only called from blkdev_direct_IO().

Move the blkdev_dio_unaligned() call to the common callsite,
blkdev_direct_IO().

Pass those functions the bdev pointer from blkdev_direct_IO(), as it is
non-trivial to look up.

Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20240415122020.1541594-1-john.g.garry@oracle.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
John Garry 2024-04-15 12:20:20 +00:00 committed by Jens Axboe
parent 688c8b9208
commit de4c7bef9d
1 changed files with 12 additions and 17 deletions
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29
block/fops.c
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@ -44,18 +44,15 @@ static bool blkdev_dio_unaligned(struct block_device *bdev, loff_t pos,
#define DIO_INLINE_BIO_VECS 4
static ssize_t __blkdev_direct_IO_simple(struct kiocb *iocb,
struct iov_iter *iter, unsigned int nr_pages)
struct iov_iter *iter, struct block_device *bdev,
unsigned int nr_pages)
{
struct block_device *bdev = I_BDEV(iocb->ki_filp->f_mapping->host);
struct bio_vec inline_vecs[DIO_INLINE_BIO_VECS], *vecs;
loff_t pos = iocb->ki_pos;
bool should_dirty = false;
struct bio bio;
ssize_t ret;
if (blkdev_dio_unaligned(bdev, pos, iter))
return -EINVAL;
if (nr_pages <= DIO_INLINE_BIO_VECS)
vecs = inline_vecs;
else {
@ -161,9 +158,8 @@ static void blkdev_bio_end_io(struct bio *bio)
}
static ssize_t __blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
unsigned int nr_pages)
struct block_device *bdev, unsigned int nr_pages)
{
struct block_device *bdev = I_BDEV(iocb->ki_filp->f_mapping->host);
struct blk_plug plug;
struct blkdev_dio *dio;
struct bio *bio;
@ -172,9 +168,6 @@ static ssize_t __blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
loff_t pos = iocb->ki_pos;
int ret = 0;
if (blkdev_dio_unaligned(bdev, pos, iter))
return -EINVAL;
if (iocb->ki_flags & IOCB_ALLOC_CACHE)
opf |= REQ_ALLOC_CACHE;
bio = bio_alloc_bioset(bdev, nr_pages, opf, GFP_KERNEL,
@ -302,9 +295,9 @@ static void blkdev_bio_end_io_async(struct bio *bio)
static ssize_t __blkdev_direct_IO_async(struct kiocb *iocb,
struct iov_iter *iter,
struct block_device *bdev,
unsigned int nr_pages)
{
struct block_device *bdev = I_BDEV(iocb->ki_filp->f_mapping->host);
bool is_read = iov_iter_rw(iter) == READ;
blk_opf_t opf = is_read ? REQ_OP_READ : dio_bio_write_op(iocb);
struct blkdev_dio *dio;
@ -312,9 +305,6 @@ static ssize_t __blkdev_direct_IO_async(struct kiocb *iocb,
loff_t pos = iocb->ki_pos;
int ret = 0;
if (blkdev_dio_unaligned(bdev, pos, iter))
return -EINVAL;
if (iocb->ki_flags & IOCB_ALLOC_CACHE)
opf |= REQ_ALLOC_CACHE;
bio = bio_alloc_bioset(bdev, nr_pages, opf, GFP_KERNEL,
@ -368,18 +358,23 @@ static ssize_t __blkdev_direct_IO_async(struct kiocb *iocb,
static ssize_t blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
struct block_device *bdev = I_BDEV(iocb->ki_filp->f_mapping->host);
unsigned int nr_pages;
if (!iov_iter_count(iter))
return 0;
if (blkdev_dio_unaligned(bdev, iocb->ki_pos, iter))
return -EINVAL;
nr_pages = bio_iov_vecs_to_alloc(iter, BIO_MAX_VECS + 1);
if (likely(nr_pages <= BIO_MAX_VECS)) {
if (is_sync_kiocb(iocb))
return __blkdev_direct_IO_simple(iocb, iter, nr_pages);
return __blkdev_direct_IO_async(iocb, iter, nr_pages);
return __blkdev_direct_IO_simple(iocb, iter, bdev,
nr_pages);
return __blkdev_direct_IO_async(iocb, iter, bdev, nr_pages);
}
return __blkdev_direct_IO(iocb, iter, bio_max_segs(nr_pages));
return __blkdev_direct_IO(iocb, iter, bdev, bio_max_segs(nr_pages));
}
static int blkdev_iomap_begin(struct inode *inode, loff_t offset, loff_t length,