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| author | Joe Thornber <ejt@redhat.com> | 2021-03-29 18:34:57 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-22 11:59:22 +0300 |
| commit | 77aab16c6185f15fedccf72094d6d9a59dadadba (patch) | |
| tree | 421eef7dc18f3d9e8c64b9798b28fc4112728375 /drivers/md/persistent-data | |
| parent | d43d56dbf452ccecc1ec735cd4b6840118005d7c (diff) | |
| download | linux-77aab16c6185f15fedccf72094d6d9a59dadadba.tar.xz | |
dm persistent data: packed struct should have an aligned() attribute too
commit a88b2358f1da2c9f9fcc432f2e0a79617fea397c upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/md/persistent-data')
| -rw-r--r-- | drivers/md/persistent-data/dm-btree-internal.h | 4 | ||||
| -rw-r--r-- | drivers/md/persistent-data/dm-space-map-common.h | 8 |
2 files changed, 6 insertions, 6 deletions
diff --git a/drivers/md/persistent-data/dm-btree-internal.h b/drivers/md/persistent-data/dm-btree-internal.h index a240990a7f33..5673f8eb5f88 100644 --- a/drivers/md/persistent-data/dm-btree-internal.h +++ b/drivers/md/persistent-data/dm-btree-internal.h @@ -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[0]; -} __packed; +} __attribute__((packed, aligned(8))); /* diff --git a/drivers/md/persistent-data/dm-space-map-common.h b/drivers/md/persistent-data/dm-space-map-common.h index 8de63ce39bdd..87e17909ef52 100644 --- a/drivers/md/persistent-data/dm-space-map-common.h +++ b/drivers/md/persistent-data/dm-space-map-common.h @@ -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, |