Merge tag 'for-6.12/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper updates from Mikulas Patocka:

 - Misc VDO fixes

 - Remove unused declarations dm_get_rq_mapinfo() and dm_zone_map_bio()

 - Dm-delay: Improve kernel documentation

 - Dm-crypt: Allow to specify the integrity key size as an option

 - Dm-bufio: Remove pointless NULL check

 - Small code cleanups: Use ERR_CAST; remove unlikely() around IS_ERR;
   use __assign_bit

 - Dm-integrity: Fix gcc 5 warning; convert comma to semicolon; fix
   smatch warning

 - Dm-integrity: Support recalculation in the 'I' mode

 - Revert "dm: requeue IO if mapping table not yet available"

 - Dm-crypt: Small refactoring to make the code more readable

 - Dm-cache: Remove pointless error check

 - Dm: Fix spelling errors

 - Dm-verity: Restart or panic on an I/O error if restart or panic was
   requested

 - Dm-verity: Fallback to platform keyring also if key in trusted
   keyring is rejected

* tag 'for-6.12/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (26 commits)
  dm verity: fallback to platform keyring also if key in trusted keyring is rejected
  dm-verity: restart or panic on an I/O error
  dm: fix spelling errors
  dm-cache: remove pointless error check
  dm vdo: handle unaligned discards correctly
  dm vdo indexer: Convert comma to semicolon
  dm-crypt: Use common error handling code in crypt_set_keyring_key()
  dm-crypt: Use up_read() together with key_put() only once in crypt_set_keyring_key()
  Revert "dm: requeue IO if mapping table not yet available"
  dm-integrity: check mac_size against HASH_MAX_DIGESTSIZE in sb_mac()
  dm-integrity: support recalculation in the 'I' mode
  dm integrity: Convert comma to semicolon
  dm integrity: fix gcc 5 warning
  dm: Make use of __assign_bit() API
  dm integrity: Remove extra unlikely helper
  dm: Convert to use ERR_CAST()
  dm bufio: Remove NULL check of list_entry()
  dm-crypt: Allow to specify the integrity key size as option
  dm: Remove unused declaration and empty definition "dm_zone_map_bio"
  dm delay: enhance kernel documentation
  ...

1 files changed, 48 insertions, 0 deletions

diff --git a/drivers/md/dm-vdo/message-stats.c b/drivers/md/dm-vdo/message-stats.c
index 2802cf92922b..75dfcd7c5f63 100644
--- a/drivers/md/dm-vdo/message-stats.c
+++ b/drivers/md/dm-vdo/message-stats.c
@@ -4,6 +4,7 @@
  */
 
 #include "dedupe.h"
+#include "indexer.h"
 #include "logger.h"
 #include "memory-alloc.h"
 #include "message-stats.h"
@@ -430,3 +431,50 @@ int vdo_write_stats(struct vdo *vdo, char *buf, unsigned int maxlen)
 	vdo_free(stats);
 	return VDO_SUCCESS;
 }
+
+static void write_index_memory(u32 mem, char **buf, unsigned int *maxlen)
+{
+	char *prefix = "memorySize : ";
+
+	/* Convert index memory to fractional value */
+	if (mem == (u32)UDS_MEMORY_CONFIG_256MB)
+		write_string(prefix, "0.25, ", NULL, buf, maxlen);
+	else if (mem == (u32)UDS_MEMORY_CONFIG_512MB)
+		write_string(prefix, "0.50, ", NULL, buf, maxlen);
+	else if (mem == (u32)UDS_MEMORY_CONFIG_768MB)
+		write_string(prefix, "0.75, ", NULL, buf, maxlen);
+	else
+		write_u32(prefix, mem, ", ", buf, maxlen);
+}
+
+static void write_index_config(struct index_config *config, char **buf,
+			       unsigned int *maxlen)
+{
+	write_string("index :  ", "{ ", NULL, buf, maxlen);
+	/* index mem size */
+	write_index_memory(config->mem, buf, maxlen);
+	/* whether the index is sparse or not */
+	write_bool("isSparse : ", config->sparse, ", ", buf, maxlen);
+	write_string(NULL, "}", ", ", buf, maxlen);
+}
+
+int vdo_write_config(struct vdo *vdo, char **buf, unsigned int *maxlen)
+{
+	struct vdo_config *config = &vdo->states.vdo.config;
+
+	write_string(NULL, "{ ", NULL, buf, maxlen);
+	/* version */
+	write_u32("version : ", 1, ", ", buf, maxlen);
+	/* physical size */
+	write_block_count_t("physicalSize : ", config->physical_blocks * VDO_BLOCK_SIZE, ", ",
+			    buf, maxlen);
+	/* logical size */
+	write_block_count_t("logicalSize : ", config->logical_blocks * VDO_BLOCK_SIZE, ", ",
+			    buf, maxlen);
+	/* slab size */
+	write_block_count_t("slabSize : ", config->slab_size, ", ", buf, maxlen);
+	/* index config */
+	write_index_config(&vdo->geometry.index_config, buf, maxlen);
+	write_string(NULL, "}", NULL, buf, maxlen);
+	return VDO_SUCCESS;
+}