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dm persistent data: packed struct should have an aligned() attribute too

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Otherwise most non-x86 architectures (e.g. riscv, arm) will resort to
byte-by-byte access.

Cc: stable@vger.kernel.org
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Joe Thornber 2021-03-29 16:34:57 +01:00 committed by Mike Snitzer
parent f73e2e70ec
commit a88b2358f1
2 changed files with 6 additions and 6 deletions
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4
drivers/md/persistent-data/dm-btree-internal.h
View File

@ -34,12 +34,12 @@ struct node_header {
__le32 max_entries;
__le32 value_size;
__le32 padding;
} __packed;
} __attribute__((packed, aligned(8)));
struct btree_node {
struct node_header header;
__le64 keys[];
} __packed;
} __attribute__((packed, aligned(8)));
/*

8
drivers/md/persistent-data/dm-space-map-common.h
View File

@ -33,7 +33,7 @@ struct disk_index_entry {
__le64 blocknr;
__le32 nr_free;
__le32 none_free_before;
} __packed;
} __attribute__ ((packed, aligned(8)));
#define MAX_METADATA_BITMAPS 255
@ -43,7 +43,7 @@ struct disk_metadata_index {
__le64 blocknr;
struct disk_index_entry index[MAX_METADATA_BITMAPS];
} __packed;
} __attribute__ ((packed, aligned(8)));
struct ll_disk;
@ -86,7 +86,7 @@ struct disk_sm_root {
__le64 nr_allocated;
__le64 bitmap_root;
__le64 ref_count_root;
} __packed;
} __attribute__ ((packed, aligned(8)));
#define ENTRIES_PER_BYTE 4
@ -94,7 +94,7 @@ struct disk_bitmap_header {
__le32 csum;
__le32 not_used;
__le64 blocknr;
} __packed;
} __attribute__ ((packed, aligned(8)));
enum allocation_event {
SM_NONE,