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authorLinus Torvalds <torvalds@linux-foundation.org>2021-05-01 11:34:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-05-01 11:34:03 -0700
commit7af81cd0c4306482b49a3adce0fb2f8655f57d0f (patch)
treef86cf1a4b398798c2bc5efe1374ef77f947d237e /include
parent152d32aa846835987966fd20ee1143b0e05036a0 (diff)
parentca4a4e9a55beeb138bb06e3867f5e486da896d44 (diff)
Merge tag 'for-5.13/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper updates from Mike Snitzer: - Improve scalability of DM's device hash by switching to rbtree - Extend DM ioctl's DM_LIST_DEVICES_CMD handling to include UUID and allow filtering based on name or UUID prefix. - Various small fixes for typos, warnings, unused function, or needlessly exported interfaces. - Remove needless request_queue NULL pointer checks in DM thin and cache targets. - Remove unnecessary loop in DM core's __split_and_process_bio(). - Remove DM core's dm_vcalloc() and just use kvcalloc or kvmalloc_array instead (depending whether zeroing is useful). - Fix request-based DM's double free of blk_mq_tag_set in device remove after table load fails. - Improve DM persistent data performance on non-x86 by fixing packed structs to have a stated alignment. Also remove needless extra work from redundant calls to sm_disk_get_nr_free() and a paranoid BUG_ON() that caused duplicate checksum calculation. - Fix missing goto in DM integrity's bitmap_flush_interval error handling. - Add "reset_recalculate" feature flag to DM integrity. - Improve DM integrity by leveraging discard support to avoid needless re-writing of metadata and also use discard support to improve hash recalculation. - Fix race with DM raid target's reshape and MD raid4/5/6 resync that resulted in inconsistant reshape state during table reloads. - Update DM raid target to temove unnecessary discard limits for raid0 and raid10 now that MD has optimized discard handling for both raid levels. * tag 'for-5.13/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (26 commits) dm raid: remove unnecessary discard limits for raid0 and raid10 dm rq: fix double free of blk_mq_tag_set in dev remove after table load fails dm integrity: use discard support when recalculating dm integrity: increase RECALC_SECTORS to improve recalculate speed dm integrity: don't re-write metadata if discarding same blocks dm raid: fix inconclusive reshape layout on fast raid4/5/6 table reload sequences dm raid: fix fall-through warning in rs_check_takeover() for Clang dm clone metadata: remove unused function dm integrity: fix missing goto in bitmap_flush_interval error handling dm: replace dm_vcalloc() dm space map common: fix division bug in sm_ll_find_free_block() dm persistent data: packed struct should have an aligned() attribute too dm btree spine: remove paranoid node_check call in node_prep_for_write() dm space map disk: remove redundant calls to sm_disk_get_nr_free() dm integrity: add the "reset_recalculate" feature flag dm persistent data: remove unused return from exit_shadow_spine() dm cache: remove needless request_queue NULL pointer checks dm thin: remove needless request_queue NULL pointer check dm: unexport dm_{get,put}_table_device dm ebs: fix a few typos ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/device-mapper.h5
-rw-r--r--include/uapi/linux/dm-ioctl.h18
2 files changed, 16 insertions, 7 deletions
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index 5c641f930caf..ff700fb6ce1d 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -574,11 +574,6 @@ struct dm_table *dm_swap_table(struct mapped_device *md,
*/
void dm_destroy_keyslot_manager(struct blk_keyslot_manager *ksm);
-/*
- * A wrapper around vmalloc.
- */
-void *dm_vcalloc(unsigned long nmemb, unsigned long elem_size);
-
/*-----------------------------------------------------------------
* Macros.
*---------------------------------------------------------------*/
diff --git a/include/uapi/linux/dm-ioctl.h b/include/uapi/linux/dm-ioctl.h
index fcff6669137b..e5c6e458bdf7 100644
--- a/include/uapi/linux/dm-ioctl.h
+++ b/include/uapi/linux/dm-ioctl.h
@@ -193,8 +193,22 @@ struct dm_name_list {
__u32 next; /* offset to the next record from
the _start_ of this */
char name[0];
+
+ /*
+ * The following members can be accessed by taking a pointer that
+ * points immediately after the terminating zero character in "name"
+ * and aligning this pointer to next 8-byte boundary.
+ * Uuid is present if the flag DM_NAME_LIST_FLAG_HAS_UUID is set.
+ *
+ * __u32 event_nr;
+ * __u32 flags;
+ * char uuid[0];
+ */
};
+#define DM_NAME_LIST_FLAG_HAS_UUID 1
+#define DM_NAME_LIST_FLAG_DOESNT_HAVE_UUID 2
+
/*
* Used to retrieve the target versions
*/
@@ -272,9 +286,9 @@ enum {
#define DM_DEV_SET_GEOMETRY _IOWR(DM_IOCTL, DM_DEV_SET_GEOMETRY_CMD, struct dm_ioctl)
#define DM_VERSION_MAJOR 4
-#define DM_VERSION_MINOR 44
+#define DM_VERSION_MINOR 45
#define DM_VERSION_PATCHLEVEL 0
-#define DM_VERSION_EXTRA "-ioctl (2021-02-01)"
+#define DM_VERSION_EXTRA "-ioctl (2021-03-22)"
/* Status bits */
#define DM_READONLY_FLAG (1 << 0) /* In/Out */