| Message ID | 20241213155557.105419-6-axboe@kernel.dk (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Uncached buffered IO | expand |
On Fri, Dec 13, 2024 at 08:55:19AM -0700, Jens Axboe wrote: > If ractl->dropbehind is set to true, then folios created are marked as > dropbehind as well. > > Signed-off-by: Jens Axboe <axboe@kernel.dk> Reviewed-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index bcf0865a38ae..5da4b6d42fae 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -1353,6 +1353,7 @@ struct readahead_control { pgoff_t _index; unsigned int _nr_pages; unsigned int _batch_count; + bool dropbehind; bool _workingset; unsigned long _pflags; }; diff --git a/mm/readahead.c b/mm/readahead.c index 8a62ad4106ff..c0a6dc5d5686 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->dropbehind) + __folio_set_dropbehind(folio); + + return folio; } /**
If ractl->dropbehind is set to true, then folios created are marked as dropbehind as well. Signed-off-by: Jens Axboe <axboe@kernel.dk> --- include/linux/pagemap.h | 1 + mm/readahead.c | 8 +++++++- 2 files changed, 8 insertions(+), 1 deletion(-)