Messages in this thread Patch in this message | | | Date | Sun, 3 Apr 2022 21:52:02 -0700 | From | Christoph Hellwig <> | Subject | Re: [PATCH v2 1/2] block: add sync_blockdev_range() |
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On Sat, Apr 02, 2022 at 03:28:00AM +0000, Yuezhang.Mo@sony.com wrote: > sync_blockdev_range() is to support syncing multiple sectors > with as few block device requests as possible, it is helpful > to make the block device to give full play to its performance. > > Signed-off-by: Yuezhang Mo <Yuezhang.Mo@sony.com> > Suggested-by: Christoph Hellwig <hch@infradead.org> > Reviewed-by: Andy Wu <Andy.Wu@sony.com> > Reviewed-by: Aoyama Wataru <wataru.aoyama@sony.com> > cc: Jens Axboe <axboe@kernel.dk> > --- > block/bdev.c | 10 ++++++++++ > include/linux/blkdev.h | 6 ++++++ > 2 files changed, 16 insertions(+) > > diff --git a/block/bdev.c b/block/bdev.c > index 102837a37051..57043e4f3322 100644 > --- a/block/bdev.c > +++ b/block/bdev.c > @@ -200,6 +200,16 @@ int sync_blockdev(struct block_device *bdev) > } > EXPORT_SYMBOL(sync_blockdev); > > +int sync_blockdev_range(struct block_device *bdev, loff_t lstart, loff_t lend) > +{ > + if (!bdev) > + return 0;
This check isn't really needed, and I don't think we need a !CONFIG_BLOCK stub for this either.
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