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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2025-06-12 17:41:25 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-06-19 16:28:44 +0300 |
| commit | 9e263d94593b733b0fc4cb123c31027b37ab5e37 (patch) | |
| tree | 0f6d6d7489f9234b8e4c824a944e7c157b08e97a /include/linux | |
| parent | 51c695986fa1eee8279c78351c31a92ab7225ee9 (diff) | |
| download | linux-9e263d94593b733b0fc4cb123c31027b37ab5e37.tar.xz | |
bio: Fix bio_first_folio() for SPARSEMEM without VMEMMAP
[ Upstream commit f826ec7966a63d48e16e0868af4e038bf9a1a3ae ]
It is possible for physically contiguous folios to have discontiguous
struct pages if SPARSEMEM is enabled and SPARSEMEM_VMEMMAP is not.
This is correctly handled by folio_page_idx(), so remove this open-coded
implementation.
Fixes: 640d1930bef4 (block: Add bio_for_each_folio_all())
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Link: https://lore.kernel.org/r/20250612144126.2849931-1-willy@infradead.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/bio.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h index b893418c3cc0..f193aef4fac0 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -294,7 +294,7 @@ static inline void bio_first_folio(struct folio_iter *fi, struct bio *bio, fi->folio = page_folio(bvec->bv_page); fi->offset = bvec->bv_offset + - PAGE_SIZE * (bvec->bv_page - &fi->folio->page); + PAGE_SIZE * folio_page_idx(fi->folio, bvec->bv_page); fi->_seg_count = bvec->bv_len; fi->length = min(folio_size(fi->folio) - fi->offset, fi->_seg_count); fi->_next = folio_next(fi->folio); |