Merge tag 'for-6.11/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper updates from Mikulas Patocka:

 - Optimize processing of flush bios in the dm-linear and dm-stripe
   targets

 - Dm-io cleansups and refactoring

 - Remove unused 'struct thunk' in dm-cache

 - Handle minor device numbers > 255 in dm-init

 - Dm-verity refactoring & enabling platform keyring

 - Fix warning in dm-raid

 - Improve dm-crypt performance - split bios to smaller pieces, so that
   They could be processed concurrently

 - Stop using blk_limits_io_{min,opt}

 - Dm-vdo cleanup and refactoring

 - Remove max_write_zeroes_granularity and max_secure_erase_granularity

 - Dm-multipath cleanup & refactoring

 - Add dm-crypt and dm-integrity support for non-power-of-2 sector size

 - Fix reshape in dm-raid

 - Make dm_block_validator const

* tag 'for-6.11/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (33 commits)
  dm vdo: fix a minor formatting issue in vdo.rst
  dm vdo int-map: fix kerneldoc formatting
  dm vdo repair: add missing kerneldoc fields
  dm: Constify struct dm_block_validator
  dm-integrity: introduce the Inline mode
  dm: introduce the target flag mempool_needs_integrity
  dm raid: fix stripes adding reshape size issues
  dm raid: move _get_reshape_sectors() as prerequisite to fixing reshape size issues
  dm-crypt: support for per-sector NVMe metadata
  dm mpath: don't call dm_get_device in multipath_message
  dm: factor out helper function from dm_get_device
  dm-verity: fix dm_is_verity_target() when dm-verity is builtin
  dm: Remove max_secure_erase_granularity
  dm: Remove max_write_zeroes_granularity
  dm vdo indexer: use swap() instead of open coding it
  dm vdo: remove unused struct 'uds_attribute'
  dm: stop using blk_limits_io_{min,opt}
  dm-crypt: limit the size of encryption requests
  dm verity: add support for signature verification with platform keyring
  dm-raid: Fix WARN_ON_ONCE check for sync_thread in raid_resume
  ...

1 files changed, 26 insertions, 12 deletions

diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index 15d28164bbbd..53ca3a913d06 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -180,6 +180,11 @@ int dm_get_device(struct dm_target *ti, const char *path, blk_mode_t mode,
 void dm_put_device(struct dm_target *ti, struct dm_dev *d);
 
 /*
+ * Helper function for getting devices
+ */
+int dm_devt_from_path(const char *path, dev_t *dev_p);
+
+/*
  * Information about a target type
  */
 
@@ -371,18 +376,6 @@ struct dm_target {
 	bool max_discard_granularity:1;
 
 	/*
-	 * Set if this target requires that secure_erases be split on
-	 * 'max_secure_erase_sectors' boundaries.
-	 */
-	bool max_secure_erase_granularity:1;
-
-	/*
-	 * Set if this target requires that write_zeroes be split on
-	 * 'max_write_zeroes_sectors' boundaries.
-	 */
-	bool max_write_zeroes_granularity:1;
-
-	/*
 	 * Set if we need to limit the number of in-flight bios when swapping.
 	 */
 	bool limit_swap_bios:1;
@@ -404,6 +397,27 @@ struct dm_target {
 	 * bio_set_dev(). NOTE: ideally a target should _not_ need this.
 	 */
 	bool needs_bio_set_dev:1;
+
+	/*
+	 * Set if the target supports flush optimization. If all the targets in
+	 * a table have flush_bypasses_map set, the dm core will not send
+	 * flushes to the targets via a ->map method. It will iterate over
+	 * dm_table->devices and send flushes to the devices directly. This
+	 * optimization reduces the number of flushes being sent when multiple
+	 * targets in a table use the same underlying device.
+	 *
+	 * This optimization may be enabled on targets that just pass the
+	 * flushes to the underlying devices without performing any other
+	 * actions on the flush request. Currently, dm-linear and dm-stripe
+	 * support it.
+	 */
+	bool flush_bypasses_map:1;
+
+	/*
+	 * Set if the target calls bio_integrity_alloc on bios received
+	 * in the map method.
+	 */
+	bool mempool_needs_integrity:1;
 };
 
 void *dm_per_bio_data(struct bio *bio, size_t data_size);