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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2024-08-22 15:50:09 +0200 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2024-08-23 13:49:48 +0200 |
| commit | 84429b675bcfd2a518ae167ee4661cdf7539aa7d (patch) | |
| tree | 56481e9a481b7462737af124d0936ec3ecbf6930 /mm/readahead.c | |
| parent | Linux 6.11-rc1 (diff) | |
| download | linux-84429b675bcfd2a518ae167ee4661cdf7539aa7d.tar.xz linux-84429b675bcfd2a518ae167ee4661cdf7539aa7d.zip | |
fs: Allow fine-grained control of folio sizes
We need filesystems to be able to communicate acceptable folio sizes
to the pagecache for a variety of uses (e.g. large block sizes).
Support a range of folio sizes between order-0 and order-31.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Co-developed-by: Pankaj Raghav <p.raghav@samsung.com>
Signed-off-by: Pankaj Raghav <p.raghav@samsung.com>
Link: https://lore.kernel.org/r/20240822135018.1931258-2-kernel@pankajraghav.com
Tested-by: David Howells <dhowells@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Daniel Gomez <da.gomez@samsung.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'mm/readahead.c')
| -rw-r--r-- | mm/readahead.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/readahead.c b/mm/readahead.c index 517c0be7ce66..3e5239e9e177 100644 --- a/mm/readahead.c +++ b/mm/readahead.c @@ -449,10 +449,10 @@ void page_cache_ra_order(struct readahead_control *ractl, limit = min(limit, index + ra->size - 1); - if (new_order < MAX_PAGECACHE_ORDER) + if (new_order < mapping_max_folio_order(mapping)) new_order += 2; - new_order = min_t(unsigned int, MAX_PAGECACHE_ORDER, new_order); + new_order = min(mapping_max_folio_order(mapping), new_order); new_order = min_t(unsigned int, new_order, ilog2(ra->size)); /* See comment in page_cache_ra_unbounded() */ |