March 2021 - Linux-stable-mirror

FAILED: patch "[PATCH] dm table: fix zoned iterate_devices based device capability" failed to apply to 4.14-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.14-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 24f6b6036c9eec21191646930ad42808e6180510 Mon Sep 17 00:00:00 2001 From: Jeffle Xu <jefflexu(a)linux.alibaba.com> Date: Mon, 8 Feb 2021 22:46:38 -0500 Subject: [PATCH] dm table: fix zoned iterate_devices based device capability checks Fix dm_table_supports_zoned_model() and invert logic of both iterate_devices_callout_fn so that all devices' zoned capabilities are properly checked. Add one more parameter to dm_table_any_dev_attr(), which is actually used as the @data parameter of iterate_devices_callout_fn, so that dm_table_matches_zone_sectors() can be replaced by dm_table_any_dev_attr(). Fixes: dd88d313bef02 ("dm table: add zoned block devices validation") Cc: stable(a)vger.kernel.org Signed-off-by: Jeffle Xu <jefflexu(a)linux.alibaba.com> Signed-off-by: Mike Snitzer <snitzer(a)redhat.com> diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 71f7ec508cf7..77086db8b920 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -1316,10 +1316,10 @@ struct dm_target *dm_table_find_target(struct dm_table *t, sector_t sector) * should use the iteration structure like dm_table_supports_nowait() or * dm_table_supports_discards(). Or introduce dm_table_all_devs_attr() that * uses an @anti_func that handle semantics of counter examples, e.g. not - * capable of something. So: return !dm_table_any_dev_attr(t, anti_func); + * capable of something. So: return !dm_table_any_dev_attr(t, anti_func, data); */ static bool dm_table_any_dev_attr(struct dm_table *t, - iterate_devices_callout_fn func) + iterate_devices_callout_fn func, void *data) { struct dm_target *ti; unsigned int i; @@ -1328,7 +1328,7 @@ static bool dm_table_any_dev_attr(struct dm_table *t, ti = dm_table_get_target(t, i); if (ti->type->iterate_devices && - ti->type->iterate_devices(ti, func, NULL)) + ti->type->iterate_devices(ti, func, data)) return true; } @@ -1371,13 +1371,13 @@ bool dm_table_has_no_data_devices(struct dm_table *table) return true; } -static int device_is_zoned_model(struct dm_target *ti, struct dm_dev *dev, - sector_t start, sector_t len, void *data) +static int device_not_zoned_model(struct dm_target *ti, struct dm_dev *dev, + sector_t start, sector_t len, void *data) { struct request_queue *q = bdev_get_queue(dev->bdev); enum blk_zoned_model *zoned_model = data; - return q && blk_queue_zoned_model(q) == *zoned_model; + return !q || blk_queue_zoned_model(q) != *zoned_model; } static bool dm_table_supports_zoned_model(struct dm_table *t, @@ -1394,37 +1394,20 @@ static bool dm_table_supports_zoned_model(struct dm_table *t, return false; if (!ti->type->iterate_devices || - !ti->type->iterate_devices(ti, device_is_zoned_model, &zoned_model)) + ti->type->iterate_devices(ti, device_not_zoned_model, &zoned_model)) return false; } return true; } -static int device_matches_zone_sectors(struct dm_target *ti, struct dm_dev *dev, - sector_t start, sector_t len, void *data) +static int device_not_matches_zone_sectors(struct dm_target *ti, struct dm_dev *dev, + sector_t start, sector_t len, void *data) { struct request_queue *q = bdev_get_queue(dev->bdev); unsigned int *zone_sectors = data; - return q && blk_queue_zone_sectors(q) == *zone_sectors; -} - -static bool dm_table_matches_zone_sectors(struct dm_table *t, - unsigned int zone_sectors) -{ - struct dm_target *ti; - unsigned i; - - for (i = 0; i < dm_table_get_num_targets(t); i++) { - ti = dm_table_get_target(t, i); - - if (!ti->type->iterate_devices || - !ti->type->iterate_devices(ti, device_matches_zone_sectors, &zone_sectors)) - return false; - } - - return true; + return !q || blk_queue_zone_sectors(q) != *zone_sectors; } static int validate_hardware_zoned_model(struct dm_table *table, @@ -1444,7 +1427,7 @@ static int validate_hardware_zoned_model(struct dm_table *table, if (!zone_sectors || !is_power_of_2(zone_sectors)) return -EINVAL; - if (!dm_table_matches_zone_sectors(table, zone_sectors)) { + if (dm_table_any_dev_attr(table, device_not_matches_zone_sectors, &zone_sectors)) { DMERR("%s: zone sectors is not consistent across all devices", dm_device_name(table->md)); return -EINVAL; @@ -1830,11 +1813,11 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, else blk_queue_flag_clear(QUEUE_FLAG_DAX, q); - if (dm_table_any_dev_attr(t, device_dax_write_cache_enabled)) + if (dm_table_any_dev_attr(t, device_dax_write_cache_enabled, NULL)) dax_write_cache(t->md->dax_dev, true); /* Ensure that all underlying devices are non-rotational. */ - if (dm_table_any_dev_attr(t, device_is_rotational)) + if (dm_table_any_dev_attr(t, device_is_rotational, NULL)) blk_queue_flag_clear(QUEUE_FLAG_NONROT, q); else blk_queue_flag_set(QUEUE_FLAG_NONROT, q); @@ -1853,7 +1836,7 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, * them as well. Only targets that support iterate_devices are considered: * don't want error, zero, etc to require stable pages. */ - if (dm_table_any_dev_attr(t, device_requires_stable_pages)) + if (dm_table_any_dev_attr(t, device_requires_stable_pages, NULL)) blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, q); else blk_queue_flag_clear(QUEUE_FLAG_STABLE_WRITES, q); @@ -1864,7 +1847,8 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, * Clear QUEUE_FLAG_ADD_RANDOM if any underlying device does not * have it set. */ - if (blk_queue_add_random(q) && dm_table_any_dev_attr(t, device_is_not_random)) + if (blk_queue_add_random(q) && + dm_table_any_dev_attr(t, device_is_not_random, NULL)) blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, q); /*

3 years, 7 months

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FAILED: patch "[PATCH] dm table: fix DAX iterate_devices based device capability" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 5b0fab508992c2e120971da658ce80027acbc405 Mon Sep 17 00:00:00 2001 From: Jeffle Xu <jefflexu(a)linux.alibaba.com> Date: Mon, 8 Feb 2021 22:34:36 -0500 Subject: [PATCH] dm table: fix DAX iterate_devices based device capability checks Fix dm_table_supports_dax() and invert logic of both iterate_devices_callout_fn so that all devices' DAX capabilities are properly checked. Fixes: 545ed20e6df6 ("dm: add infrastructure for DAX support") Cc: stable(a)vger.kernel.org Signed-off-by: Jeffle Xu <jefflexu(a)linux.alibaba.com> Signed-off-by: Mike Snitzer <snitzer(a)redhat.com> diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 3e211e64f348..71f7ec508cf7 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -820,24 +820,24 @@ void dm_table_set_type(struct dm_table *t, enum dm_queue_mode type) EXPORT_SYMBOL_GPL(dm_table_set_type); /* validate the dax capability of the target device span */ -int device_supports_dax(struct dm_target *ti, struct dm_dev *dev, +int device_not_dax_capable(struct dm_target *ti, struct dm_dev *dev, sector_t start, sector_t len, void *data) { int blocksize = *(int *) data, id; bool rc; id = dax_read_lock(); - rc = dax_supported(dev->dax_dev, dev->bdev, blocksize, start, len); + rc = !dax_supported(dev->dax_dev, dev->bdev, blocksize, start, len); dax_read_unlock(id); return rc; } /* Check devices support synchronous DAX */ -static int device_dax_synchronous(struct dm_target *ti, struct dm_dev *dev, - sector_t start, sector_t len, void *data) +static int device_not_dax_synchronous_capable(struct dm_target *ti, struct dm_dev *dev, + sector_t start, sector_t len, void *data) { - return dev->dax_dev && dax_synchronous(dev->dax_dev); + return !dev->dax_dev || !dax_synchronous(dev->dax_dev); } bool dm_table_supports_dax(struct dm_table *t, @@ -854,7 +854,7 @@ bool dm_table_supports_dax(struct dm_table *t, return false; if (!ti->type->iterate_devices || - !ti->type->iterate_devices(ti, iterate_fn, blocksize)) + ti->type->iterate_devices(ti, iterate_fn, blocksize)) return false; } @@ -925,7 +925,7 @@ static int dm_table_determine_type(struct dm_table *t) verify_bio_based: /* We must use this table as bio-based */ t->type = DM_TYPE_BIO_BASED; - if (dm_table_supports_dax(t, device_supports_dax, &page_size) || + if (dm_table_supports_dax(t, device_not_dax_capable, &page_size) || (list_empty(devices) && live_md_type == DM_TYPE_DAX_BIO_BASED)) { t->type = DM_TYPE_DAX_BIO_BASED; } @@ -1618,23 +1618,6 @@ static int device_dax_write_cache_enabled(struct dm_target *ti, return false; } -static int dm_table_supports_dax_write_cache(struct dm_table *t) -{ - struct dm_target *ti; - unsigned i; - - for (i = 0; i < dm_table_get_num_targets(t); i++) { - ti = dm_table_get_target(t, i); - - if (ti->type->iterate_devices && - ti->type->iterate_devices(ti, - device_dax_write_cache_enabled, NULL)) - return true; - } - - return false; -} - static int device_is_rotational(struct dm_target *ti, struct dm_dev *dev, sector_t start, sector_t len, void *data) { @@ -1839,15 +1822,15 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, } blk_queue_write_cache(q, wc, fua); - if (dm_table_supports_dax(t, device_supports_dax, &page_size)) { + if (dm_table_supports_dax(t, device_not_dax_capable, &page_size)) { blk_queue_flag_set(QUEUE_FLAG_DAX, q); - if (dm_table_supports_dax(t, device_dax_synchronous, NULL)) + if (dm_table_supports_dax(t, device_not_dax_synchronous_capable, NULL)) set_dax_synchronous(t->md->dax_dev); } else blk_queue_flag_clear(QUEUE_FLAG_DAX, q); - if (dm_table_supports_dax_write_cache(t)) + if (dm_table_any_dev_attr(t, device_dax_write_cache_enabled)) dax_write_cache(t->md->dax_dev, true); /* Ensure that all underlying devices are non-rotational. */ diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 65b21159a7a6..64fda1429e39 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1133,7 +1133,7 @@ static bool dm_dax_supported(struct dax_device *dax_dev, struct block_device *bd if (!map) goto out; - ret = dm_table_supports_dax(map, device_supports_dax, &blocksize); + ret = dm_table_supports_dax(map, device_not_dax_capable, &blocksize); out: dm_put_live_table(md, srcu_idx); diff --git a/drivers/md/dm.h b/drivers/md/dm.h index fffe1e289c53..b441ad772c18 100644 --- a/drivers/md/dm.h +++ b/drivers/md/dm.h @@ -73,7 +73,7 @@ void dm_table_free_md_mempools(struct dm_table *t); struct dm_md_mempools *dm_table_get_md_mempools(struct dm_table *t); bool dm_table_supports_dax(struct dm_table *t, iterate_devices_callout_fn fn, int *blocksize); -int device_supports_dax(struct dm_target *ti, struct dm_dev *dev, +int device_not_dax_capable(struct dm_target *ti, struct dm_dev *dev, sector_t start, sector_t len, void *data); void dm_lock_md_type(struct mapped_device *md);

3 years, 7 months

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FAILED: patch "[PATCH] dm table: fix DAX iterate_devices based device capability" failed to apply to 4.14-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.14-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 5b0fab508992c2e120971da658ce80027acbc405 Mon Sep 17 00:00:00 2001 From: Jeffle Xu <jefflexu(a)linux.alibaba.com> Date: Mon, 8 Feb 2021 22:34:36 -0500 Subject: [PATCH] dm table: fix DAX iterate_devices based device capability checks Fix dm_table_supports_dax() and invert logic of both iterate_devices_callout_fn so that all devices' DAX capabilities are properly checked. Fixes: 545ed20e6df6 ("dm: add infrastructure for DAX support") Cc: stable(a)vger.kernel.org Signed-off-by: Jeffle Xu <jefflexu(a)linux.alibaba.com> Signed-off-by: Mike Snitzer <snitzer(a)redhat.com> diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 3e211e64f348..71f7ec508cf7 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -820,24 +820,24 @@ void dm_table_set_type(struct dm_table *t, enum dm_queue_mode type) EXPORT_SYMBOL_GPL(dm_table_set_type); /* validate the dax capability of the target device span */ -int device_supports_dax(struct dm_target *ti, struct dm_dev *dev, +int device_not_dax_capable(struct dm_target *ti, struct dm_dev *dev, sector_t start, sector_t len, void *data) { int blocksize = *(int *) data, id; bool rc; id = dax_read_lock(); - rc = dax_supported(dev->dax_dev, dev->bdev, blocksize, start, len); + rc = !dax_supported(dev->dax_dev, dev->bdev, blocksize, start, len); dax_read_unlock(id); return rc; } /* Check devices support synchronous DAX */ -static int device_dax_synchronous(struct dm_target *ti, struct dm_dev *dev, - sector_t start, sector_t len, void *data) +static int device_not_dax_synchronous_capable(struct dm_target *ti, struct dm_dev *dev, + sector_t start, sector_t len, void *data) { - return dev->dax_dev && dax_synchronous(dev->dax_dev); + return !dev->dax_dev || !dax_synchronous(dev->dax_dev); } bool dm_table_supports_dax(struct dm_table *t, @@ -854,7 +854,7 @@ bool dm_table_supports_dax(struct dm_table *t, return false; if (!ti->type->iterate_devices || - !ti->type->iterate_devices(ti, iterate_fn, blocksize)) + ti->type->iterate_devices(ti, iterate_fn, blocksize)) return false; } @@ -925,7 +925,7 @@ static int dm_table_determine_type(struct dm_table *t) verify_bio_based: /* We must use this table as bio-based */ t->type = DM_TYPE_BIO_BASED; - if (dm_table_supports_dax(t, device_supports_dax, &page_size) || + if (dm_table_supports_dax(t, device_not_dax_capable, &page_size) || (list_empty(devices) && live_md_type == DM_TYPE_DAX_BIO_BASED)) { t->type = DM_TYPE_DAX_BIO_BASED; } @@ -1618,23 +1618,6 @@ static int device_dax_write_cache_enabled(struct dm_target *ti, return false; } -static int dm_table_supports_dax_write_cache(struct dm_table *t) -{ - struct dm_target *ti; - unsigned i; - - for (i = 0; i < dm_table_get_num_targets(t); i++) { - ti = dm_table_get_target(t, i); - - if (ti->type->iterate_devices && - ti->type->iterate_devices(ti, - device_dax_write_cache_enabled, NULL)) - return true; - } - - return false; -} - static int device_is_rotational(struct dm_target *ti, struct dm_dev *dev, sector_t start, sector_t len, void *data) { @@ -1839,15 +1822,15 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, } blk_queue_write_cache(q, wc, fua); - if (dm_table_supports_dax(t, device_supports_dax, &page_size)) { + if (dm_table_supports_dax(t, device_not_dax_capable, &page_size)) { blk_queue_flag_set(QUEUE_FLAG_DAX, q); - if (dm_table_supports_dax(t, device_dax_synchronous, NULL)) + if (dm_table_supports_dax(t, device_not_dax_synchronous_capable, NULL)) set_dax_synchronous(t->md->dax_dev); } else blk_queue_flag_clear(QUEUE_FLAG_DAX, q); - if (dm_table_supports_dax_write_cache(t)) + if (dm_table_any_dev_attr(t, device_dax_write_cache_enabled)) dax_write_cache(t->md->dax_dev, true); /* Ensure that all underlying devices are non-rotational. */ diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 65b21159a7a6..64fda1429e39 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1133,7 +1133,7 @@ static bool dm_dax_supported(struct dax_device *dax_dev, struct block_device *bd if (!map) goto out; - ret = dm_table_supports_dax(map, device_supports_dax, &blocksize); + ret = dm_table_supports_dax(map, device_not_dax_capable, &blocksize); out: dm_put_live_table(md, srcu_idx); diff --git a/drivers/md/dm.h b/drivers/md/dm.h index fffe1e289c53..b441ad772c18 100644 --- a/drivers/md/dm.h +++ b/drivers/md/dm.h @@ -73,7 +73,7 @@ void dm_table_free_md_mempools(struct dm_table *t); struct dm_md_mempools *dm_table_get_md_mempools(struct dm_table *t); bool dm_table_supports_dax(struct dm_table *t, iterate_devices_callout_fn fn, int *blocksize); -int device_supports_dax(struct dm_target *ti, struct dm_dev *dev, +int device_not_dax_capable(struct dm_target *ti, struct dm_dev *dev, sector_t start, sector_t len, void *data); void dm_lock_md_type(struct mapped_device *md);

3 years, 7 months

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FAILED: patch "[PATCH] dm table: fix DAX iterate_devices based device capability" failed to apply to 4.19-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 5b0fab508992c2e120971da658ce80027acbc405 Mon Sep 17 00:00:00 2001 From: Jeffle Xu <jefflexu(a)linux.alibaba.com> Date: Mon, 8 Feb 2021 22:34:36 -0500 Subject: [PATCH] dm table: fix DAX iterate_devices based device capability checks Fix dm_table_supports_dax() and invert logic of both iterate_devices_callout_fn so that all devices' DAX capabilities are properly checked. Fixes: 545ed20e6df6 ("dm: add infrastructure for DAX support") Cc: stable(a)vger.kernel.org Signed-off-by: Jeffle Xu <jefflexu(a)linux.alibaba.com> Signed-off-by: Mike Snitzer <snitzer(a)redhat.com> diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 3e211e64f348..71f7ec508cf7 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -820,24 +820,24 @@ void dm_table_set_type(struct dm_table *t, enum dm_queue_mode type) EXPORT_SYMBOL_GPL(dm_table_set_type); /* validate the dax capability of the target device span */ -int device_supports_dax(struct dm_target *ti, struct dm_dev *dev, +int device_not_dax_capable(struct dm_target *ti, struct dm_dev *dev, sector_t start, sector_t len, void *data) { int blocksize = *(int *) data, id; bool rc; id = dax_read_lock(); - rc = dax_supported(dev->dax_dev, dev->bdev, blocksize, start, len); + rc = !dax_supported(dev->dax_dev, dev->bdev, blocksize, start, len); dax_read_unlock(id); return rc; } /* Check devices support synchronous DAX */ -static int device_dax_synchronous(struct dm_target *ti, struct dm_dev *dev, - sector_t start, sector_t len, void *data) +static int device_not_dax_synchronous_capable(struct dm_target *ti, struct dm_dev *dev, + sector_t start, sector_t len, void *data) { - return dev->dax_dev && dax_synchronous(dev->dax_dev); + return !dev->dax_dev || !dax_synchronous(dev->dax_dev); } bool dm_table_supports_dax(struct dm_table *t, @@ -854,7 +854,7 @@ bool dm_table_supports_dax(struct dm_table *t, return false; if (!ti->type->iterate_devices || - !ti->type->iterate_devices(ti, iterate_fn, blocksize)) + ti->type->iterate_devices(ti, iterate_fn, blocksize)) return false; } @@ -925,7 +925,7 @@ static int dm_table_determine_type(struct dm_table *t) verify_bio_based: /* We must use this table as bio-based */ t->type = DM_TYPE_BIO_BASED; - if (dm_table_supports_dax(t, device_supports_dax, &page_size) || + if (dm_table_supports_dax(t, device_not_dax_capable, &page_size) || (list_empty(devices) && live_md_type == DM_TYPE_DAX_BIO_BASED)) { t->type = DM_TYPE_DAX_BIO_BASED; } @@ -1618,23 +1618,6 @@ static int device_dax_write_cache_enabled(struct dm_target *ti, return false; } -static int dm_table_supports_dax_write_cache(struct dm_table *t) -{ - struct dm_target *ti; - unsigned i; - - for (i = 0; i < dm_table_get_num_targets(t); i++) { - ti = dm_table_get_target(t, i); - - if (ti->type->iterate_devices && - ti->type->iterate_devices(ti, - device_dax_write_cache_enabled, NULL)) - return true; - } - - return false; -} - static int device_is_rotational(struct dm_target *ti, struct dm_dev *dev, sector_t start, sector_t len, void *data) { @@ -1839,15 +1822,15 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, } blk_queue_write_cache(q, wc, fua); - if (dm_table_supports_dax(t, device_supports_dax, &page_size)) { + if (dm_table_supports_dax(t, device_not_dax_capable, &page_size)) { blk_queue_flag_set(QUEUE_FLAG_DAX, q); - if (dm_table_supports_dax(t, device_dax_synchronous, NULL)) + if (dm_table_supports_dax(t, device_not_dax_synchronous_capable, NULL)) set_dax_synchronous(t->md->dax_dev); } else blk_queue_flag_clear(QUEUE_FLAG_DAX, q); - if (dm_table_supports_dax_write_cache(t)) + if (dm_table_any_dev_attr(t, device_dax_write_cache_enabled)) dax_write_cache(t->md->dax_dev, true); /* Ensure that all underlying devices are non-rotational. */ diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 65b21159a7a6..64fda1429e39 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1133,7 +1133,7 @@ static bool dm_dax_supported(struct dax_device *dax_dev, struct block_device *bd if (!map) goto out; - ret = dm_table_supports_dax(map, device_supports_dax, &blocksize); + ret = dm_table_supports_dax(map, device_not_dax_capable, &blocksize); out: dm_put_live_table(md, srcu_idx); diff --git a/drivers/md/dm.h b/drivers/md/dm.h index fffe1e289c53..b441ad772c18 100644 --- a/drivers/md/dm.h +++ b/drivers/md/dm.h @@ -73,7 +73,7 @@ void dm_table_free_md_mempools(struct dm_table *t); struct dm_md_mempools *dm_table_get_md_mempools(struct dm_table *t); bool dm_table_supports_dax(struct dm_table *t, iterate_devices_callout_fn fn, int *blocksize); -int device_supports_dax(struct dm_target *ti, struct dm_dev *dev, +int device_not_dax_capable(struct dm_target *ti, struct dm_dev *dev, sector_t start, sector_t len, void *data); void dm_lock_md_type(struct mapped_device *md);

3 years, 7 months

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FAILED: patch "[PATCH] dm table: fix DAX iterate_devices based device capability" failed to apply to 4.9-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.9-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 5b0fab508992c2e120971da658ce80027acbc405 Mon Sep 17 00:00:00 2001 From: Jeffle Xu <jefflexu(a)linux.alibaba.com> Date: Mon, 8 Feb 2021 22:34:36 -0500 Subject: [PATCH] dm table: fix DAX iterate_devices based device capability checks Fix dm_table_supports_dax() and invert logic of both iterate_devices_callout_fn so that all devices' DAX capabilities are properly checked. Fixes: 545ed20e6df6 ("dm: add infrastructure for DAX support") Cc: stable(a)vger.kernel.org Signed-off-by: Jeffle Xu <jefflexu(a)linux.alibaba.com> Signed-off-by: Mike Snitzer <snitzer(a)redhat.com> diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 3e211e64f348..71f7ec508cf7 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -820,24 +820,24 @@ void dm_table_set_type(struct dm_table *t, enum dm_queue_mode type) EXPORT_SYMBOL_GPL(dm_table_set_type); /* validate the dax capability of the target device span */ -int device_supports_dax(struct dm_target *ti, struct dm_dev *dev, +int device_not_dax_capable(struct dm_target *ti, struct dm_dev *dev, sector_t start, sector_t len, void *data) { int blocksize = *(int *) data, id; bool rc; id = dax_read_lock(); - rc = dax_supported(dev->dax_dev, dev->bdev, blocksize, start, len); + rc = !dax_supported(dev->dax_dev, dev->bdev, blocksize, start, len); dax_read_unlock(id); return rc; } /* Check devices support synchronous DAX */ -static int device_dax_synchronous(struct dm_target *ti, struct dm_dev *dev, - sector_t start, sector_t len, void *data) +static int device_not_dax_synchronous_capable(struct dm_target *ti, struct dm_dev *dev, + sector_t start, sector_t len, void *data) { - return dev->dax_dev && dax_synchronous(dev->dax_dev); + return !dev->dax_dev || !dax_synchronous(dev->dax_dev); } bool dm_table_supports_dax(struct dm_table *t, @@ -854,7 +854,7 @@ bool dm_table_supports_dax(struct dm_table *t, return false; if (!ti->type->iterate_devices || - !ti->type->iterate_devices(ti, iterate_fn, blocksize)) + ti->type->iterate_devices(ti, iterate_fn, blocksize)) return false; } @@ -925,7 +925,7 @@ static int dm_table_determine_type(struct dm_table *t) verify_bio_based: /* We must use this table as bio-based */ t->type = DM_TYPE_BIO_BASED; - if (dm_table_supports_dax(t, device_supports_dax, &page_size) || + if (dm_table_supports_dax(t, device_not_dax_capable, &page_size) || (list_empty(devices) && live_md_type == DM_TYPE_DAX_BIO_BASED)) { t->type = DM_TYPE_DAX_BIO_BASED; } @@ -1618,23 +1618,6 @@ static int device_dax_write_cache_enabled(struct dm_target *ti, return false; } -static int dm_table_supports_dax_write_cache(struct dm_table *t) -{ - struct dm_target *ti; - unsigned i; - - for (i = 0; i < dm_table_get_num_targets(t); i++) { - ti = dm_table_get_target(t, i); - - if (ti->type->iterate_devices && - ti->type->iterate_devices(ti, - device_dax_write_cache_enabled, NULL)) - return true; - } - - return false; -} - static int device_is_rotational(struct dm_target *ti, struct dm_dev *dev, sector_t start, sector_t len, void *data) { @@ -1839,15 +1822,15 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, } blk_queue_write_cache(q, wc, fua); - if (dm_table_supports_dax(t, device_supports_dax, &page_size)) { + if (dm_table_supports_dax(t, device_not_dax_capable, &page_size)) { blk_queue_flag_set(QUEUE_FLAG_DAX, q); - if (dm_table_supports_dax(t, device_dax_synchronous, NULL)) + if (dm_table_supports_dax(t, device_not_dax_synchronous_capable, NULL)) set_dax_synchronous(t->md->dax_dev); } else blk_queue_flag_clear(QUEUE_FLAG_DAX, q); - if (dm_table_supports_dax_write_cache(t)) + if (dm_table_any_dev_attr(t, device_dax_write_cache_enabled)) dax_write_cache(t->md->dax_dev, true); /* Ensure that all underlying devices are non-rotational. */ diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 65b21159a7a6..64fda1429e39 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1133,7 +1133,7 @@ static bool dm_dax_supported(struct dax_device *dax_dev, struct block_device *bd if (!map) goto out; - ret = dm_table_supports_dax(map, device_supports_dax, &blocksize); + ret = dm_table_supports_dax(map, device_not_dax_capable, &blocksize); out: dm_put_live_table(md, srcu_idx); diff --git a/drivers/md/dm.h b/drivers/md/dm.h index fffe1e289c53..b441ad772c18 100644 --- a/drivers/md/dm.h +++ b/drivers/md/dm.h @@ -73,7 +73,7 @@ void dm_table_free_md_mempools(struct dm_table *t); struct dm_md_mempools *dm_table_get_md_mempools(struct dm_table *t); bool dm_table_supports_dax(struct dm_table *t, iterate_devices_callout_fn fn, int *blocksize); -int device_supports_dax(struct dm_target *ti, struct dm_dev *dev, +int device_not_dax_capable(struct dm_target *ti, struct dm_dev *dev, sector_t start, sector_t len, void *data); void dm_lock_md_type(struct mapped_device *md);

3 years, 7 months

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FAILED: patch "[PATCH] gfs2: Recursive gfs2_quota_hold in gfs2_iomap_end" failed to apply to 4.19-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 7009fa9cd9a5262944b30eb7efb1f0561d074b68 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher <agruenba(a)redhat.com> Date: Tue, 9 Feb 2021 18:32:32 +0100 Subject: [PATCH] gfs2: Recursive gfs2_quota_hold in gfs2_iomap_end When starting an iomap write, gfs2_quota_lock_check -> gfs2_quota_lock -> gfs2_quota_hold is called from gfs2_iomap_begin. At the end of the write, before unlocking the quotas, punch_hole -> gfs2_quota_hold can be called again in gfs2_iomap_end, which is incorrect and leads to a failed assertion. Instead, move the call to gfs2_quota_unlock before the call to punch_hole to fix that. Fixes: 64bc06bb32ee ("gfs2: iomap buffered write support") Cc: stable(a)vger.kernel.org # v4.19+ Signed-off-by: Andreas Gruenbacher <agruenba(a)redhat.com> diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index 62d9081d1e26..a1f9dde33058 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -1230,6 +1230,9 @@ static int gfs2_iomap_end(struct inode *inode, loff_t pos, loff_t length, gfs2_inplace_release(ip); + if (ip->i_qadata && ip->i_qadata->qa_qd_num) + gfs2_quota_unlock(ip); + if (length != written && (iomap->flags & IOMAP_F_NEW)) { /* Deallocate blocks that were just allocated. */ loff_t blockmask = i_blocksize(inode) - 1; @@ -1242,9 +1245,6 @@ static int gfs2_iomap_end(struct inode *inode, loff_t pos, loff_t length, } } - if (ip->i_qadata && ip->i_qadata->qa_qd_num) - gfs2_quota_unlock(ip); - if (unlikely(!written)) goto out_unlock;

3 years, 7 months

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FAILED: patch "[PATCH] f2fs: enforce the immutable flag on open files" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From e0fcd01510ad025c9bbce704c5c2579294056141 Mon Sep 17 00:00:00 2001 From: Chao Yu <chao(a)kernel.org> Date: Sat, 26 Dec 2020 18:07:01 +0800 Subject: [PATCH] f2fs: enforce the immutable flag on open files This patch ports commit 02b016ca7f99 ("ext4: enforce the immutable flag on open files") to f2fs. According to the chattr man page, "a file with the 'i' attribute cannot be modified..." Historically, this was only enforced when the file was opened, per the rest of the description, "... and the file can not be opened in write mode". There is general agreement that we should standardize all file systems to prevent modifications even for files that were opened at the time the immutable flag is set. Eventually, a change to enforce this at the VFS layer should be landing in mainline. Cc: stable(a)kernel.org Signed-off-by: Chao Yu <yuchao0(a)huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk(a)kernel.org> diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 2ddc4baaf173..d57b54643918 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -60,6 +60,9 @@ static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf) bool need_alloc = true; int err = 0; + if (unlikely(IS_IMMUTABLE(inode))) + return VM_FAULT_SIGBUS; + if (unlikely(f2fs_cp_error(sbi))) { err = -EIO; goto err; @@ -865,6 +868,14 @@ int f2fs_setattr(struct dentry *dentry, struct iattr *attr) if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) return -EIO; + if (unlikely(IS_IMMUTABLE(inode))) + return -EPERM; + + if (unlikely(IS_APPEND(inode) && + (attr->ia_valid & (ATTR_MODE | ATTR_UID | + ATTR_GID | ATTR_TIMES_SET)))) + return -EPERM; + if ((attr->ia_valid & ATTR_SIZE) && !f2fs_is_compress_backend_ready(inode)) return -EOPNOTSUPP; @@ -4351,6 +4362,11 @@ static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) inode_lock(inode); } + if (unlikely(IS_IMMUTABLE(inode))) { + ret = -EPERM; + goto unlock; + } + ret = generic_write_checks(iocb, from); if (ret > 0) { bool preallocated = false; @@ -4415,6 +4431,7 @@ static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) if (ret > 0) f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret); } +unlock: inode_unlock(inode); out: trace_f2fs_file_write_iter(inode, iocb->ki_pos,

3 years, 7 months

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FAILED: patch "[PATCH] f2fs: flush data when enabling checkpoint back" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From b0ff4fe746fd028eef920ddc8c7b0361c1ede6ec Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim <jaegeuk(a)kernel.org> Date: Tue, 26 Jan 2021 17:00:42 -0800 Subject: [PATCH] f2fs: flush data when enabling checkpoint back During checkpoint=disable period, f2fs bypasses all the synchronous IOs such as sync and fsync. So, when enabling it back, we must flush all of them in order to keep the data persistent. Otherwise, suddern power-cut right after enabling checkpoint will cause data loss. Fixes: 4354994f097d ("f2fs: checkpoint disabling") Cc: stable(a)vger.kernel.org Reviewed-by: Chao Yu <yuchao0(a)huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk(a)kernel.org> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index fc343243799c..429bc00af440 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1892,6 +1892,9 @@ static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi) static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi) { + /* we should flush all the data to keep data consistency */ + sync_inodes_sb(sbi->sb); + down_write(&sbi->gc_lock); f2fs_dirty_to_prefree(sbi);

3 years, 7 months

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FAILED: patch "[PATCH] um: defer killing userspace on page table update failures" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From a7d48886cacf8b426e0079bca9639d2657cf2d38 Mon Sep 17 00:00:00 2001 From: Johannes Berg <johannes.berg(a)intel.com> Date: Wed, 13 Jan 2021 22:08:03 +0100 Subject: [PATCH] um: defer killing userspace on page table update failures In some cases we can get to fix_range_common() with mmap_sem held, and in others we get there without it being held. For example, we get there with it held from sys_mprotect(), and without it held from fork_handler(). Avoid any issues in this and simply defer killing the task until it runs the next time. Do it on the mm so that another task that shares the same mm can't continue running afterwards. Cc: stable(a)vger.kernel.org Fixes: 468f65976a8d ("um: Fix hung task in fix_range_common()") Signed-off-by: Johannes Berg <johannes.berg(a)intel.com> Signed-off-by: Richard Weinberger <richard(a)nod.at> diff --git a/arch/um/include/shared/skas/mm_id.h b/arch/um/include/shared/skas/mm_id.h index 4337b4ced095..e82e203f5f41 100644 --- a/arch/um/include/shared/skas/mm_id.h +++ b/arch/um/include/shared/skas/mm_id.h @@ -12,6 +12,7 @@ struct mm_id { int pid; } u; unsigned long stack; + int kill; }; #endif diff --git a/arch/um/kernel/tlb.c b/arch/um/kernel/tlb.c index 89468da6bf88..5be1b0da9f3b 100644 --- a/arch/um/kernel/tlb.c +++ b/arch/um/kernel/tlb.c @@ -352,12 +352,11 @@ void fix_range_common(struct mm_struct *mm, unsigned long start_addr, /* This is not an else because ret is modified above */ if (ret) { + struct mm_id *mm_idp = &current->mm->context.id; + printk(KERN_ERR "fix_range_common: failed, killing current " "process: %d\n", task_tgid_vnr(current)); - /* We are under mmap_lock, release it such that current can terminate */ - mmap_write_unlock(current->mm); - force_sig(SIGKILL); - do_signal(&current->thread.regs); + mm_idp->kill = 1; } } diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c index ed4bbffe8d7a..d910e25c273e 100644 --- a/arch/um/os-Linux/skas/process.c +++ b/arch/um/os-Linux/skas/process.c @@ -300,6 +300,7 @@ static int userspace_tramp(void *stack) } int userspace_pid[NR_CPUS]; +int kill_userspace_mm[NR_CPUS]; /** * start_userspace() - prepare a new userspace process @@ -393,6 +394,8 @@ void userspace(struct uml_pt_regs *regs, unsigned long *aux_fp_regs) interrupt_end(); while (1) { + if (kill_userspace_mm[0]) + fatal_sigsegv(); /* * This can legitimately fail if the process loads a @@ -714,4 +717,5 @@ void reboot_skas(void) void __switch_mm(struct mm_id *mm_idp) { userspace_pid[0] = mm_idp->u.pid; + kill_userspace_mm[0] = mm_idp->kill; }

3 years, 7 months

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FAILED: patch "[PATCH] um: defer killing userspace on page table update failures" failed to apply to 4.19-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From a7d48886cacf8b426e0079bca9639d2657cf2d38 Mon Sep 17 00:00:00 2001 From: Johannes Berg <johannes.berg(a)intel.com> Date: Wed, 13 Jan 2021 22:08:03 +0100 Subject: [PATCH] um: defer killing userspace on page table update failures In some cases we can get to fix_range_common() with mmap_sem held, and in others we get there without it being held. For example, we get there with it held from sys_mprotect(), and without it held from fork_handler(). Avoid any issues in this and simply defer killing the task until it runs the next time. Do it on the mm so that another task that shares the same mm can't continue running afterwards. Cc: stable(a)vger.kernel.org Fixes: 468f65976a8d ("um: Fix hung task in fix_range_common()") Signed-off-by: Johannes Berg <johannes.berg(a)intel.com> Signed-off-by: Richard Weinberger <richard(a)nod.at> diff --git a/arch/um/include/shared/skas/mm_id.h b/arch/um/include/shared/skas/mm_id.h index 4337b4ced095..e82e203f5f41 100644 --- a/arch/um/include/shared/skas/mm_id.h +++ b/arch/um/include/shared/skas/mm_id.h @@ -12,6 +12,7 @@ struct mm_id { int pid; } u; unsigned long stack; + int kill; }; #endif diff --git a/arch/um/kernel/tlb.c b/arch/um/kernel/tlb.c index 89468da6bf88..5be1b0da9f3b 100644 --- a/arch/um/kernel/tlb.c +++ b/arch/um/kernel/tlb.c @@ -352,12 +352,11 @@ void fix_range_common(struct mm_struct *mm, unsigned long start_addr, /* This is not an else because ret is modified above */ if (ret) { + struct mm_id *mm_idp = &current->mm->context.id; + printk(KERN_ERR "fix_range_common: failed, killing current " "process: %d\n", task_tgid_vnr(current)); - /* We are under mmap_lock, release it such that current can terminate */ - mmap_write_unlock(current->mm); - force_sig(SIGKILL); - do_signal(&current->thread.regs); + mm_idp->kill = 1; } } diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c index ed4bbffe8d7a..d910e25c273e 100644 --- a/arch/um/os-Linux/skas/process.c +++ b/arch/um/os-Linux/skas/process.c @@ -300,6 +300,7 @@ static int userspace_tramp(void *stack) } int userspace_pid[NR_CPUS]; +int kill_userspace_mm[NR_CPUS]; /** * start_userspace() - prepare a new userspace process @@ -393,6 +394,8 @@ void userspace(struct uml_pt_regs *regs, unsigned long *aux_fp_regs) interrupt_end(); while (1) { + if (kill_userspace_mm[0]) + fatal_sigsegv(); /* * This can legitimately fail if the process loads a @@ -714,4 +717,5 @@ void reboot_skas(void) void __switch_mm(struct mm_id *mm_idp) { userspace_pid[0] = mm_idp->u.pid; + kill_userspace_mm[0] = mm_idp->kill; }

3 years, 7 months

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