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Mon, 22 Apr 2024 14:40:18 +0000 Received: from DM6PR10MB4313.namprd10.prod.outlook.com ([fe80::ae68:7d51:133f:324]) by DM6PR10MB4313.namprd10.prod.outlook.com ([fe80::ae68:7d51:133f:324%4]) with mapi id 15.20.7472.044; Mon, 22 Apr 2024 14:40:18 +0000 From: John Garry To: axboe@kernel.dk, brauner@kernel.org, djwong@kernel.org, viro@zeniv.linux.org.uk, jack@suse.cz, akpm@linux-foundation.org, willy@infradead.org, dchinner@redhat.com, tytso@mit.edu, hch@lst.de, martin.petersen@oracle.com, nilay@linux.ibm.com, ritesh.list@gmail.com, mcgrof@kernel.org Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, ojaswin@linux.ibm.com, p.raghav@samsung.com, jbongio@google.com, okiselev@amazon.com, John Garry Subject: [PATCH RFC 2/7] filemap: Change mapping_set_folio_min_order() -> mapping_set_folio_orders() Date: Mon, 22 Apr 2024 14:39:18 +0000 Message-Id: <20240422143923.3927601-3-john.g.garry@oracle.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20240422143923.3927601-1-john.g.garry@oracle.com> References: <20240422143923.3927601-1-john.g.garry@oracle.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: BY5PR16CA0035.namprd16.prod.outlook.com (2603:10b6:a03:1a0::48) To DM6PR10MB4313.namprd10.prod.outlook.com (2603:10b6:5:212::20) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6PR10MB4313:EE_|DS7PR10MB5039:EE_ X-MS-Office365-Filtering-Correlation-Id: 4e76b849-5a74-4017-07f1-08dc62da2121 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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We still have the restriction of not being able to support order-1 folios - it will be required to lift this limit at some stage. Signed-off-by: John Garry --- fs/xfs/xfs_icache.c | 10 ++++++---- include/linux/pagemap.h | 20 +++++++++++++------- mm/filemap.c | 8 +++++++- 3 files changed, 26 insertions(+), 12 deletions(-) diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c index 8fb5cf0f5a09..6186887bd6ff 100644 --- a/fs/xfs/xfs_icache.c +++ b/fs/xfs/xfs_icache.c @@ -89,8 +89,9 @@ xfs_inode_alloc( /* VFS doesn't initialise i_mode or i_state! */ VFS_I(ip)->i_mode = 0; VFS_I(ip)->i_state = 0; - mapping_set_folio_min_order(VFS_I(ip)->i_mapping, - M_IGEO(mp)->min_folio_order); + mapping_set_folio_orders(VFS_I(ip)->i_mapping, + M_IGEO(mp)->min_folio_order, + MAX_PAGECACHE_ORDER); XFS_STATS_INC(mp, vn_active); ASSERT(atomic_read(&ip->i_pincount) == 0); @@ -325,8 +326,9 @@ xfs_reinit_inode( inode->i_rdev = dev; inode->i_uid = uid; inode->i_gid = gid; - mapping_set_folio_min_order(inode->i_mapping, - M_IGEO(mp)->min_folio_order); + mapping_set_folio_orders(inode->i_mapping, + M_IGEO(mp)->min_folio_order, + MAX_PAGECACHE_ORDER); return error; } diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index fc8eb9c94e9c..c22455fa28a1 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -363,9 +363,10 @@ static inline void mapping_set_gfp_mask(struct address_space *m, gfp_t mask) #endif /* - * mapping_set_folio_min_order() - Set the minimum folio order + * mapping_set_folio_orders() - Set the minimum and max folio order * @mapping: The address_space. * @min: Minimum folio order (between 0-MAX_PAGECACHE_ORDER inclusive). + * @max: Maximum folio order (between 0-MAX_PAGECACHE_ORDER inclusive). * * The filesystem should call this function in its inode constructor to * indicate which base size of folio the VFS can use to cache the contents @@ -376,15 +377,20 @@ static inline void mapping_set_gfp_mask(struct address_space *m, gfp_t mask) * Context: This should not be called while the inode is active as it * is non-atomic. */ -static inline void mapping_set_folio_min_order(struct address_space *mapping, - unsigned int min) + +static inline void mapping_set_folio_orders(struct address_space *mapping, + unsigned int min, unsigned int max) { - if (min > MAX_PAGECACHE_ORDER) - min = MAX_PAGECACHE_ORDER; + if (min == 1) + min = 2; + if (max < min) + max = min; + if (max > MAX_PAGECACHE_ORDER) + max = MAX_PAGECACHE_ORDER; mapping->flags = (mapping->flags & ~AS_FOLIO_ORDER_MASK) | (min << AS_FOLIO_ORDER_MIN) | - (MAX_PAGECACHE_ORDER << AS_FOLIO_ORDER_MAX); + (max << AS_FOLIO_ORDER_MAX); } /** @@ -400,7 +406,7 @@ static inline void mapping_set_folio_min_order(struct address_space *mapping, */ static inline void mapping_set_large_folios(struct address_space *mapping) { - mapping_set_folio_min_order(mapping, 0); + mapping_set_folio_orders(mapping, 0, MAX_PAGECACHE_ORDER); } static inline unsigned int mapping_max_folio_order(struct address_space *mapping) diff --git a/mm/filemap.c b/mm/filemap.c index d81530b0aac0..d5effe50ddcb 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -1898,9 +1898,15 @@ struct folio *__filemap_get_folio(struct address_space *mapping, pgoff_t index, no_page: if (!folio && (fgp_flags & FGP_CREAT)) { unsigned int min_order = mapping_min_folio_order(mapping); - unsigned int order = max(min_order, FGF_GET_ORDER(fgp_flags)); + unsigned int max_order = mapping_max_folio_order(mapping); + unsigned int order = FGF_GET_ORDER(fgp_flags); int err; + if (order > max_order) + order = max_order; + else if (order < min_order) + order = max_order; + index = mapping_align_start_index(mapping, index); if ((fgp_flags & FGP_WRITE) && mapping_can_writeback(mapping)) -- 2.31.1