block: Add BIO_PAGE_PINNED and associated infrastructure

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Add BIO_PAGE_PINNED to indicate that the pages in a bio are pinned
(FOLL_PIN) and that the pin will need removing.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
cc: Al Viro <viro@zeniv.linux.org.uk>
cc: Jens Axboe <axboe@kernel.dk>
cc: Jan Kara <jack@suse.cz>
cc: Matthew Wilcox <willy@infradead.org>
cc: Logan Gunthorpe <logang@deltatee.com>
cc: linux-block@vger.kernel.org
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20230522205744.2825689-5-dhowells@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

...

This commit is contained in:

David Howells 2023-05-22 21:57:42 +01:00 • committed by Jens Axboe

parent e51bab4e20

commit fd363244e8

4 changed files with 18 additions and 4 deletions

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6

block/bio.c

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12

block/blk.h

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3

include/linux/bio.h

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1

include/linux/blk_types.h

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