From fd363244e883323e1ac9412d96fd22b51e255b0c Mon Sep 17 00:00:00 2001 From: David Howells Date: Mon, 22 May 2023 21:57:42 +0100 Subject: block: Add BIO_PAGE_PINNED and associated infrastructure 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 Reviewed-by: Christoph Hellwig Reviewed-by: John Hubbard cc: Al Viro cc: Jens Axboe cc: Jan Kara cc: Matthew Wilcox cc: Logan Gunthorpe cc: linux-block@vger.kernel.org Reviewed-by: Jan Kara Link: https://lore.kernel.org/r/20230522205744.2825689-5-dhowells@redhat.com Signed-off-by: Jens Axboe --- include/linux/bio.h | 3 ++- include/linux/blk_types.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/bio.h b/include/linux/bio.h index 0922729acd26..8588bcfbc6ef 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -488,7 +488,8 @@ void zero_fill_bio(struct bio *bio); static inline void bio_release_pages(struct bio *bio, bool mark_dirty) { - if (bio_flagged(bio, BIO_PAGE_REFFED)) + if (bio_flagged(bio, BIO_PAGE_REFFED) || + bio_flagged(bio, BIO_PAGE_PINNED)) __bio_release_pages(bio, mark_dirty); } diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index dfd2c2cb909d..8ef209e3aa96 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -323,6 +323,7 @@ struct bio { * bio flags */ enum { + BIO_PAGE_PINNED, /* Unpin pages in bio_release_pages() */ BIO_PAGE_REFFED, /* put pages in bio_release_pages() */ BIO_CLONED, /* doesn't own data */ BIO_BOUNCED, /* bio is a bounce bio */ -- cgit v1.2.3-70-g09d2