diff options
| 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/filemap.c | |
| parent | 8400291e289ee6b2bf9779ff1c83a291501f017b (diff) | |
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/filemap.c')
| -rw-r--r-- | mm/filemap.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index d62150418b91..ad5e4a848070 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -1933,10 +1933,8 @@ no_page: if (WARN_ON_ONCE(!(fgp_flags & (FGP_LOCK | FGP_FOR_MMAP)))) fgp_flags |= FGP_LOCK; - if (!mapping_large_folio_support(mapping)) - order = 0; - if (order > MAX_PAGECACHE_ORDER) - order = MAX_PAGECACHE_ORDER; + if (order > mapping_max_folio_order(mapping)) + order = mapping_max_folio_order(mapping); /* If we're not aligned, allocate a smaller folio */ if (index & ((1UL << order) - 1)) order = __ffs(index); |