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Message-ID: <20241111234842.2024180-5-axboe@kernel.dk> Date: Mon, 11 Nov 2024 16:37:31 -0700 From: Jens Axboe <axboe@...nel.dk> To: linux-mm@...ck.org, linux-fsdevel@...r.kernel.org Cc: hannes@...xchg.org, clm@...a.com, linux-kernel@...r.kernel.org, willy@...radead.org, kirill@...temov.name, linux-btrfs@...r.kernel.org, linux-ext4@...r.kernel.org, linux-xfs@...r.kernel.org, Jens Axboe <axboe@...nel.dk> Subject: [PATCH 04/16] mm/readahead: add readahead_control->uncached member If ractl->uncached is set to true, then folios created are marked as uncached as well. Signed-off-by: Jens Axboe <axboe@...nel.dk> --- include/linux/pagemap.h | 1 + mm/readahead.c | 8 +++++++- 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 68a5f1ff3301..8afacb7520d4 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -1350,6 +1350,7 @@ struct readahead_control { pgoff_t _index; unsigned int _nr_pages; unsigned int _batch_count; + bool uncached; bool _workingset; unsigned long _pflags; }; diff --git a/mm/readahead.c b/mm/readahead.c index 003cfe79880d..8dbeab9bc1f0 100644 --- a/mm/readahead.c +++ b/mm/readahead.c @@ -191,7 +191,13 @@ static void read_pages(struct readahead_control *rac) static struct folio *ractl_alloc_folio(struct readahead_control *ractl, gfp_t gfp_mask, unsigned int order) { - return filemap_alloc_folio(gfp_mask, order); + struct folio *folio; + + folio = filemap_alloc_folio(gfp_mask, order); + if (folio && ractl->uncached) + __folio_set_uncached(folio); + + return folio; } /** -- 2.45.2
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