From: Hannes Reinecke <hare@suse.de>
To: "Pankaj Raghav (Samsung)" <kernel@pankajraghav.com>,
willy@infradead.org, djwong@kernel.org, brauner@kernel.org,
david@fromorbit.com, chandan.babu@oracle.com,
akpm@linux-foundation.org
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, linux-xfs@vger.kernel.org, mcgrof@kernel.org,
gost.dev@samsung.com, p.raghav@samsung.com
Subject: Re: [PATCH v4 03/11] filemap: allocate mapping_min_order folios in the page cache
Date: Thu, 25 Apr 2024 21:04:36 +0200 [thread overview]
Message-ID: <cef0b2db-adea-47f4-b1d8-af5de2316dbe@suse.de> (raw)
In-Reply-To: <20240425113746.335530-4-kernel@pankajraghav.com>
On 4/25/24 13:37, Pankaj Raghav (Samsung) wrote:
> From: Luis Chamberlain <mcgrof@kernel.org>
>
> filemap_create_folio() and do_read_cache_folio() were always allocating
> folio of order 0. __filemap_get_folio was trying to allocate higher
> order folios when fgp_flags had higher order hint set but it will default
> to order 0 folio if higher order memory allocation fails.
>
> Supporting mapping_min_order implies that we guarantee each folio in the
> page cache has at least an order of mapping_min_order. When adding new
> folios to the page cache we must also ensure the index used is aligned to
> the mapping_min_order as the page cache requires the index to be aligned
> to the order of the folio.
>
> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
> Co-developed-by: Pankaj Raghav <p.raghav@samsung.com>
> Signed-off-by: Pankaj Raghav <p.raghav@samsung.com>
> ---
> mm/filemap.c | 24 +++++++++++++++++-------
> 1 file changed, 17 insertions(+), 7 deletions(-)
>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Cheers,
Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
hare@suse.de +49 911 74053 688
SUSE Software Solutions GmbH, Frankenstr. 146, 90461 Nürnberg
HRB 36809 (AG Nürnberg), GF: I. Totev, A. McDonald, W. Knoblich
next prev parent reply other threads:[~2024-04-25 19:06 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-25 11:37 [PATCH v4 00/11] enable bs > ps in XFS Pankaj Raghav (Samsung)
2024-04-25 11:37 ` [PATCH v4 01/11] readahead: rework loop in page_cache_ra_unbounded() Pankaj Raghav (Samsung)
2024-04-25 11:37 ` [PATCH v4 02/11] fs: Allow fine-grained control of folio sizes Pankaj Raghav (Samsung)
2024-04-25 18:07 ` Hannes Reinecke
2024-04-26 15:09 ` Darrick J. Wong
2024-04-25 11:37 ` [PATCH v4 03/11] filemap: allocate mapping_min_order folios in the page cache Pankaj Raghav (Samsung)
2024-04-25 19:04 ` Hannes Reinecke [this message]
2024-04-26 15:12 ` Darrick J. Wong
2024-04-28 20:59 ` Pankaj Raghav (Samsung)
2024-04-25 11:37 ` [PATCH v4 04/11] readahead: allocate folios with mapping_min_order in readahead Pankaj Raghav (Samsung)
2024-04-25 18:53 ` Matthew Wilcox
2024-04-25 11:37 ` [PATCH v4 05/11] mm: do not split a folio if it has minimum folio order requirement Pankaj Raghav (Samsung)
2024-04-25 20:10 ` Matthew Wilcox
2024-04-26 0:47 ` Luis Chamberlain
2024-04-26 23:46 ` Luis Chamberlain
2024-04-28 0:57 ` Luis Chamberlain
2024-04-29 3:56 ` Luis Chamberlain
2024-04-29 14:29 ` Zi Yan
2024-04-30 0:31 ` Luis Chamberlain
2024-04-30 0:49 ` Luis Chamberlain
2024-04-30 2:43 ` Zi Yan
2024-04-30 19:27 ` Luis Chamberlain
2024-05-01 4:13 ` Matthew Wilcox
2024-05-01 14:28 ` Matthew Wilcox
2024-04-26 15:49 ` Pankaj Raghav (Samsung)
2024-04-25 11:37 ` [PATCH v4 06/11] filemap: cap PTE range to be created to i_size in folio_map_range() Pankaj Raghav (Samsung)
2024-04-25 20:24 ` Matthew Wilcox
2024-04-26 12:54 ` Pankaj Raghav (Samsung)
2024-04-25 11:37 ` [PATCH v4 07/11] iomap: fix iomap_dio_zero() for fs bs > system page size Pankaj Raghav (Samsung)
2024-04-26 6:22 ` Christoph Hellwig
2024-04-26 11:43 ` Pankaj Raghav (Samsung)
2024-04-27 5:12 ` Christoph Hellwig
2024-04-29 21:02 ` Pankaj Raghav (Samsung)
2024-04-27 3:26 ` Matthew Wilcox
2024-04-27 4:52 ` Christoph Hellwig
2024-04-25 11:37 ` [PATCH v4 08/11] xfs: use kvmalloc for xattr buffers Pankaj Raghav (Samsung)
2024-04-26 15:18 ` Darrick J. Wong
2024-04-28 21:06 ` Pankaj Raghav (Samsung)
2024-04-25 11:37 ` [PATCH v4 09/11] xfs: expose block size in stat Pankaj Raghav (Samsung)
2024-04-26 15:15 ` Darrick J. Wong
2024-04-25 11:37 ` [PATCH v4 10/11] xfs: make the calculation generic in xfs_sb_validate_fsb_count() Pankaj Raghav (Samsung)
2024-04-26 15:16 ` Darrick J. Wong
2024-04-25 11:37 ` [PATCH v4 11/11] xfs: enable block size larger than page size support Pankaj Raghav (Samsung)
2024-04-26 15:18 ` Darrick J. Wong
2024-04-27 4:42 ` [PATCH v4 00/11] enable bs > ps in XFS Ritesh Harjani
2024-04-27 5:05 ` Darrick J. Wong
2024-04-29 20:39 ` Pankaj Raghav (Samsung)
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