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| author |   Matthew Wilcox (Oracle) <willy@infradead.org> | 2025-06-12 15:41:25 +0100 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2025-06-13 06:19:34 -0600 |
| commit | f826ec7966a63d48e16e0868af4e038bf9a1a3ae (patch) | |
| tree | 319b61a8534bb101e46271c7effe1647985bb610 | |
| parent | block: use plug request list tail for one-shot backmerge attempt (diff) | |
| download | wireguard-linux-f826ec7966a63d48e16e0868af4e038bf9a1a3ae.tar.xz wireguard-linux-f826ec7966a63d48e16e0868af4e038bf9a1a3ae.zip | |
bio: Fix bio_first_folio() for SPARSEMEM without VMEMMAP
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>
| -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 9c37c66ef9ca..46ffac5caab7 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -291,7 +291,7 @@ 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); |