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b=cnizekoiZxVnWJbCHHW3uXmYeau7ek6pFlys/w7AppnNkN7n6Y3f8JFCXi5EQ2JP70oh8M0leWejIDfaKA4lHClL4IZiP0kXm78GWqjwp4t3BcruIiVP5mkc/5CRAjPVAqdCsGI1pbJWCWHZiSIpcea6BxPJeb/BSUrJ3nUcGRA= Authentication-Results: fromorbit.com; dkim=none (message not signed) header.d=none;fromorbit.com; dmarc=none action=none header.from=oracle.com; Received: from SJ0PR10MB4429.namprd10.prod.outlook.com (2603:10b6:a03:2d1::14) by BYAPR10MB2759.namprd10.prod.outlook.com (2603:10b6:a02:b5::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4608.17; Thu, 21 Oct 2021 00:11:51 +0000 Received: from SJ0PR10MB4429.namprd10.prod.outlook.com ([fe80::401:1df2:3e9a:66c]) by SJ0PR10MB4429.namprd10.prod.outlook.com ([fe80::401:1df2:3e9a:66c%5]) with mapi id 15.20.4608.018; Thu, 21 Oct 2021 00:11:51 +0000 From: Jane Chu To: david@fromorbit.com, djwong@kernel.org, dan.j.williams@intel.com, hch@infradead.org, vishal.l.verma@intel.com, dave.jiang@intel.com, agk@redhat.com, snitzer@redhat.com, dm-devel@redhat.com, ira.weiny@intel.com, willy@infradead.org, vgoyal@redhat.com, linux-fsdevel@vger.kernel.org, nvdimm@lists.linux.dev, linux-kernel@vger.kernel.org, linux-xfs@vger.kernel.org Subject: [PATCH 4/6] dm,dax,pmem: prepare dax_copy_to/from_iter() APIs with DAXDEV_F_RECOVERY Date: Wed, 20 Oct 2021 18:10:57 -0600 Message-Id: <20211021001059.438843-5-jane.chu@oracle.com> X-Mailer: git-send-email 2.18.4 In-Reply-To: <20211021001059.438843-1-jane.chu@oracle.com> References: <20211021001059.438843-1-jane.chu@oracle.com> X-ClientProxiedBy: SN4PR0801CA0003.namprd08.prod.outlook.com (2603:10b6:803:29::13) To SJ0PR10MB4429.namprd10.prod.outlook.com (2603:10b6:a03:2d1::14) Precedence: bulk X-Mailing-List: nvdimm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Received: from brm-x62-16.us.oracle.com (2606:b400:8004:44::1d) by SN4PR0801CA0003.namprd08.prod.outlook.com (2603:10b6:803:29::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4628.16 via Frontend Transport; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: 8e57e0c6-4f9d-41af-597b-08d9942761ad X-MS-Exchange-CrossTenant-AuthSource: SJ0PR10MB4429.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Oct 2021 00:11:51.4485 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: jane.chu@oracle.com X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR10MB2759 X-Proofpoint-Virus-Version: vendor=nai engine=6300 definitions=10143 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 spamscore=0 adultscore=0 malwarescore=0 phishscore=0 bulkscore=0 mlxlogscore=999 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2109230001 definitions=main-2110210000 X-Proofpoint-ORIG-GUID: Jvdl1PV3WsPqNp66Z_mOywvxjJEM4RUC X-Proofpoint-GUID: Jvdl1PV3WsPqNp66Z_mOywvxjJEM4RUC Prepare dax_copy_to/from_iter() APIs with DAXDEV_F_RECOVERY flag such that when the flag is set, the underlying driver implementation of the APIs may deal with potential poison in a given address range and read partial data or write after clearing poison. Signed-off-by: Jane Chu --- drivers/dax/super.c | 10 ++++++---- drivers/md/dm-linear.c | 8 ++++---- drivers/md/dm-log-writes.c | 12 ++++++------ drivers/md/dm-stripe.c | 8 ++++---- drivers/md/dm.c | 8 ++++---- drivers/nvdimm/pmem.c | 4 ++-- drivers/s390/block/dcssblk.c | 6 ++++-- fs/dax.c | 4 ++-- fs/fuse/virtio_fs.c | 8 ++++---- include/linux/dax.h | 8 ++++---- include/linux/device-mapper.h | 2 +- 11 files changed, 41 insertions(+), 37 deletions(-) diff --git a/drivers/dax/super.c b/drivers/dax/super.c index 67093f1c3341..97854da1ecf7 100644 --- a/drivers/dax/super.c +++ b/drivers/dax/super.c @@ -330,22 +330,24 @@ long dax_direct_access(struct dax_device *dax_dev, pgoff_t pgoff, long nr_pages, EXPORT_SYMBOL_GPL(dax_direct_access); size_t dax_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff, void *addr, - size_t bytes, struct iov_iter *i) + size_t bytes, struct iov_iter *i, unsigned long flags) { if (!dax_alive(dax_dev)) return 0; - return dax_dev->ops->copy_from_iter(dax_dev, pgoff, addr, bytes, i); + return dax_dev->ops->copy_from_iter(dax_dev, pgoff, addr, bytes, i, + flags); } EXPORT_SYMBOL_GPL(dax_copy_from_iter); size_t dax_copy_to_iter(struct dax_device *dax_dev, pgoff_t pgoff, void *addr, - size_t bytes, struct iov_iter *i) + size_t bytes, struct iov_iter *i, unsigned long flags) { if (!dax_alive(dax_dev)) return 0; - return dax_dev->ops->copy_to_iter(dax_dev, pgoff, addr, bytes, i); + return dax_dev->ops->copy_to_iter(dax_dev, pgoff, addr, bytes, i, + flags); } EXPORT_SYMBOL_GPL(dax_copy_to_iter); diff --git a/drivers/md/dm-linear.c b/drivers/md/dm-linear.c index cb7c8518f02d..cc57bd639871 100644 --- a/drivers/md/dm-linear.c +++ b/drivers/md/dm-linear.c @@ -181,7 +181,7 @@ static long linear_dax_direct_access(struct dm_target *ti, pgoff_t pgoff, } static size_t linear_dax_copy_from_iter(struct dm_target *ti, pgoff_t pgoff, - void *addr, size_t bytes, struct iov_iter *i) + void *addr, size_t bytes, struct iov_iter *i, unsigned long flags) { struct linear_c *lc = ti->private; struct block_device *bdev = lc->dev->bdev; @@ -191,11 +191,11 @@ static size_t linear_dax_copy_from_iter(struct dm_target *ti, pgoff_t pgoff, dev_sector = linear_map_sector(ti, sector); if (bdev_dax_pgoff(bdev, dev_sector, ALIGN(bytes, PAGE_SIZE), &pgoff)) return 0; - return dax_copy_from_iter(dax_dev, pgoff, addr, bytes, i); + return dax_copy_from_iter(dax_dev, pgoff, addr, bytes, i, flags); } static size_t linear_dax_copy_to_iter(struct dm_target *ti, pgoff_t pgoff, - void *addr, size_t bytes, struct iov_iter *i) + void *addr, size_t bytes, struct iov_iter *i, unsigned long flags) { struct linear_c *lc = ti->private; struct block_device *bdev = lc->dev->bdev; @@ -205,7 +205,7 @@ static size_t linear_dax_copy_to_iter(struct dm_target *ti, pgoff_t pgoff, dev_sector = linear_map_sector(ti, sector); if (bdev_dax_pgoff(bdev, dev_sector, ALIGN(bytes, PAGE_SIZE), &pgoff)) return 0; - return dax_copy_to_iter(dax_dev, pgoff, addr, bytes, i); + return dax_copy_to_iter(dax_dev, pgoff, addr, bytes, i, flags); } static int linear_dax_zero_page_range(struct dm_target *ti, pgoff_t pgoff, diff --git a/drivers/md/dm-log-writes.c b/drivers/md/dm-log-writes.c index 6d8b88dcce6c..b8e9bddc47b8 100644 --- a/drivers/md/dm-log-writes.c +++ b/drivers/md/dm-log-writes.c @@ -964,8 +964,8 @@ static long log_writes_dax_direct_access(struct dm_target *ti, pgoff_t pgoff, } static size_t log_writes_dax_copy_from_iter(struct dm_target *ti, - pgoff_t pgoff, void *addr, size_t bytes, - struct iov_iter *i) + pgoff_t pgoff, void *addr, size_t bytes, struct iov_iter *i, + unsigned long flags) { struct log_writes_c *lc = ti->private; sector_t sector = pgoff * PAGE_SECTORS; @@ -984,19 +984,19 @@ static size_t log_writes_dax_copy_from_iter(struct dm_target *ti, return 0; } dax_copy: - return dax_copy_from_iter(lc->dev->dax_dev, pgoff, addr, bytes, i); + return dax_copy_from_iter(lc->dev->dax_dev, pgoff, addr, bytes, i, flags); } static size_t log_writes_dax_copy_to_iter(struct dm_target *ti, - pgoff_t pgoff, void *addr, size_t bytes, - struct iov_iter *i) + pgoff_t pgoff, void *addr, size_t bytes, struct iov_iter *i, + unsigned long flags) { struct log_writes_c *lc = ti->private; sector_t sector = pgoff * PAGE_SECTORS; if (bdev_dax_pgoff(lc->dev->bdev, sector, ALIGN(bytes, PAGE_SIZE), &pgoff)) return 0; - return dax_copy_to_iter(lc->dev->dax_dev, pgoff, addr, bytes, i); + return dax_copy_to_iter(lc->dev->dax_dev, pgoff, addr, bytes, i, flags); } static int log_writes_dax_zero_page_range(struct dm_target *ti, pgoff_t pgoff, diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c index 0a97d0472a0b..eefaa23a36fa 100644 --- a/drivers/md/dm-stripe.c +++ b/drivers/md/dm-stripe.c @@ -323,7 +323,7 @@ static long stripe_dax_direct_access(struct dm_target *ti, pgoff_t pgoff, } static size_t stripe_dax_copy_from_iter(struct dm_target *ti, pgoff_t pgoff, - void *addr, size_t bytes, struct iov_iter *i) + void *addr, size_t bytes, struct iov_iter *i, unsigned long flags) { sector_t dev_sector, sector = pgoff * PAGE_SECTORS; struct stripe_c *sc = ti->private; @@ -338,11 +338,11 @@ static size_t stripe_dax_copy_from_iter(struct dm_target *ti, pgoff_t pgoff, if (bdev_dax_pgoff(bdev, dev_sector, ALIGN(bytes, PAGE_SIZE), &pgoff)) return 0; - return dax_copy_from_iter(dax_dev, pgoff, addr, bytes, i); + return dax_copy_from_iter(dax_dev, pgoff, addr, bytes, i, flags); } static size_t stripe_dax_copy_to_iter(struct dm_target *ti, pgoff_t pgoff, - void *addr, size_t bytes, struct iov_iter *i) + void *addr, size_t bytes, struct iov_iter *i, unsigned long flags) { sector_t dev_sector, sector = pgoff * PAGE_SECTORS; struct stripe_c *sc = ti->private; @@ -357,7 +357,7 @@ static size_t stripe_dax_copy_to_iter(struct dm_target *ti, pgoff_t pgoff, if (bdev_dax_pgoff(bdev, dev_sector, ALIGN(bytes, PAGE_SIZE), &pgoff)) return 0; - return dax_copy_to_iter(dax_dev, pgoff, addr, bytes, i); + return dax_copy_to_iter(dax_dev, pgoff, addr, bytes, i, flags); } static int stripe_dax_zero_page_range(struct dm_target *ti, pgoff_t pgoff, diff --git a/drivers/md/dm.c b/drivers/md/dm.c index e5a14abd45f9..764183ddebc1 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1045,7 +1045,7 @@ static bool dm_dax_supported(struct dax_device *dax_dev, struct block_device *bd } static size_t dm_dax_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff, - void *addr, size_t bytes, struct iov_iter *i) + void *addr, size_t bytes, struct iov_iter *i, unsigned long flags) { struct mapped_device *md = dax_get_private(dax_dev); sector_t sector = pgoff * PAGE_SECTORS; @@ -1061,7 +1061,7 @@ static size_t dm_dax_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff, ret = copy_from_iter(addr, bytes, i); goto out; } - ret = ti->type->dax_copy_from_iter(ti, pgoff, addr, bytes, i); + ret = ti->type->dax_copy_from_iter(ti, pgoff, addr, bytes, i, flags); out: dm_put_live_table(md, srcu_idx); @@ -1069,7 +1069,7 @@ static size_t dm_dax_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff, } static size_t dm_dax_copy_to_iter(struct dax_device *dax_dev, pgoff_t pgoff, - void *addr, size_t bytes, struct iov_iter *i) + void *addr, size_t bytes, struct iov_iter *i, unsigned long flags) { struct mapped_device *md = dax_get_private(dax_dev); sector_t sector = pgoff * PAGE_SECTORS; @@ -1085,7 +1085,7 @@ static size_t dm_dax_copy_to_iter(struct dax_device *dax_dev, pgoff_t pgoff, ret = copy_to_iter(addr, bytes, i); goto out; } - ret = ti->type->dax_copy_to_iter(ti, pgoff, addr, bytes, i); + ret = ti->type->dax_copy_to_iter(ti, pgoff, addr, bytes, i, flags); out: dm_put_live_table(md, srcu_idx); diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index ed699416655b..e2a1c35108cd 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -311,13 +311,13 @@ static long pmem_dax_direct_access(struct dax_device *dax_dev, * dax_iomap_actor() */ static size_t pmem_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff, - void *addr, size_t bytes, struct iov_iter *i) + void *addr, size_t bytes, struct iov_iter *i, unsigned long flags) { return _copy_from_iter_flushcache(addr, bytes, i); } static size_t pmem_copy_to_iter(struct dax_device *dax_dev, pgoff_t pgoff, - void *addr, size_t bytes, struct iov_iter *i) + void *addr, size_t bytes, struct iov_iter *i, unsigned long flags) { return _copy_mc_to_iter(addr, bytes, i); } diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c index 6ab2f9badc8d..6eb2b9a7682b 100644 --- a/drivers/s390/block/dcssblk.c +++ b/drivers/s390/block/dcssblk.c @@ -45,13 +45,15 @@ static const struct block_device_operations dcssblk_devops = { }; static size_t dcssblk_dax_copy_from_iter(struct dax_device *dax_dev, - pgoff_t pgoff, void *addr, size_t bytes, struct iov_iter *i) + pgoff_t pgoff, void *addr, size_t bytes, struct iov_iter *i, + unsigned long flags) { return copy_from_iter(addr, bytes, i); } static size_t dcssblk_dax_copy_to_iter(struct dax_device *dax_dev, - pgoff_t pgoff, void *addr, size_t bytes, struct iov_iter *i) + pgoff_t pgoff, void *addr, size_t bytes, struct iov_iter *i, + unsigned long flags) { return copy_to_iter(addr, bytes, i); } diff --git a/fs/dax.c b/fs/dax.c index f603a9ce7f20..69433c6cd6c4 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -1241,10 +1241,10 @@ static loff_t dax_iomap_iter(const struct iomap_iter *iomi, */ if (iov_iter_rw(iter) == WRITE) xfer = dax_copy_from_iter(dax_dev, pgoff, kaddr, - map_len, iter); + map_len, iter, dax_flag); else xfer = dax_copy_to_iter(dax_dev, pgoff, kaddr, - map_len, iter); + map_len, iter, dax_flag); pos += xfer; length -= xfer; diff --git a/fs/fuse/virtio_fs.c b/fs/fuse/virtio_fs.c index d201b6e8a190..b0d80459b1cb 100644 --- a/fs/fuse/virtio_fs.c +++ b/fs/fuse/virtio_fs.c @@ -754,15 +754,15 @@ static long virtio_fs_direct_access(struct dax_device *dax_dev, pgoff_t pgoff, } static size_t virtio_fs_copy_from_iter(struct dax_device *dax_dev, - pgoff_t pgoff, void *addr, - size_t bytes, struct iov_iter *i) + pgoff_t pgoff, void *addr, size_t bytes, struct iov_iter *i, + unsigned long flags) { return copy_from_iter(addr, bytes, i); } static size_t virtio_fs_copy_to_iter(struct dax_device *dax_dev, - pgoff_t pgoff, void *addr, - size_t bytes, struct iov_iter *i) + pgoff_t pgoff, void *addr, size_t bytes, struct iov_iter *i, + unsigned long flags) { return copy_to_iter(addr, bytes, i); } diff --git a/include/linux/dax.h b/include/linux/dax.h index 0044a5d87e5d..97f421f831e2 100644 --- a/include/linux/dax.h +++ b/include/linux/dax.h @@ -33,10 +33,10 @@ struct dax_operations { sector_t, sector_t); /* copy_from_iter: required operation for fs-dax direct-i/o */ size_t (*copy_from_iter)(struct dax_device *, pgoff_t, void *, size_t, - struct iov_iter *); + struct iov_iter *, unsigned long); /* copy_to_iter: required operation for fs-dax direct-i/o */ size_t (*copy_to_iter)(struct dax_device *, pgoff_t, void *, size_t, - struct iov_iter *); + struct iov_iter *, unsigned long); /* zero_page_range: required operation. Zero page range */ int (*zero_page_range)(struct dax_device *, pgoff_t, size_t); }; @@ -197,9 +197,9 @@ void *dax_get_private(struct dax_device *dax_dev); long dax_direct_access(struct dax_device *dax_dev, pgoff_t pgoff, long nr_pages, void **kaddr, pfn_t *pfn, unsigned long); size_t dax_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff, void *addr, - size_t bytes, struct iov_iter *i); + size_t bytes, struct iov_iter *i, unsigned long flags); size_t dax_copy_to_iter(struct dax_device *dax_dev, pgoff_t pgoff, void *addr, - size_t bytes, struct iov_iter *i); + size_t bytes, struct iov_iter *i, unsigned long flags); int dax_zero_page_range(struct dax_device *dax_dev, pgoff_t pgoff, size_t nr_pages); void dax_flush(struct dax_device *dax_dev, void *addr, size_t size); diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index 307c29789332..81c67c3d96ed 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -148,7 +148,7 @@ typedef int (*dm_busy_fn) (struct dm_target *ti); typedef long (*dm_dax_direct_access_fn) (struct dm_target *ti, pgoff_t pgoff, long nr_pages, void **kaddr, pfn_t *pfn, unsigned long flags); typedef size_t (*dm_dax_copy_iter_fn)(struct dm_target *ti, pgoff_t pgoff, - void *addr, size_t bytes, struct iov_iter *i); + void *addr, size_t bytes, struct iov_iter *i, unsigned long flags); typedef int (*dm_dax_zero_page_range_fn)(struct dm_target *ti, pgoff_t pgoff, size_t nr_pages);