We store to all fields, so the kmsan warnings were spurious - but initializing via stores to bitfields appear to have been giving the compiler/kmsan trouble, and they're not necessary.
Signed-off-by: Kent Overstreet <[email protected]> --- fs/bcachefs/extents.c | 38 ++++++++++++++++++++++---------------- 1 file changed, 22 insertions(+), 16 deletions(-) diff --git a/fs/bcachefs/extents.c b/fs/bcachefs/extents.c index 04946d9911f5..ae1a1d917805 100644 --- a/fs/bcachefs/extents.c +++ b/fs/bcachefs/extents.c @@ -592,29 +592,35 @@ static void bch2_extent_crc_pack(union bch_extent_crc *dst, struct bch_extent_crc_unpacked src, enum bch_extent_entry_type type) { -#define set_common_fields(_dst, _src) \ - _dst.type = 1 << type; \ - _dst.csum_type = _src.csum_type, \ - _dst.compression_type = _src.compression_type, \ - _dst._compressed_size = _src.compressed_size - 1, \ - _dst._uncompressed_size = _src.uncompressed_size - 1, \ - _dst.offset = _src.offset +#define common_fields(_src) \ + .type = BIT(type), \ + .csum_type = _src.csum_type, \ + .compression_type = _src.compression_type, \ + ._compressed_size = _src.compressed_size - 1, \ + ._uncompressed_size = _src.uncompressed_size - 1, \ + .offset = _src.offset switch (type) { case BCH_EXTENT_ENTRY_crc32: - set_common_fields(dst->crc32, src); - dst->crc32.csum = (u32 __force) *((__le32 *) &src.csum.lo); + dst->crc32 = (struct bch_extent_crc32) { + common_fields(src), + .csum = (u32 __force) *((__le32 *) &src.csum.lo), + }; break; case BCH_EXTENT_ENTRY_crc64: - set_common_fields(dst->crc64, src); - dst->crc64.nonce = src.nonce; - dst->crc64.csum_lo = (u64 __force) src.csum.lo; - dst->crc64.csum_hi = (u64 __force) *((__le16 *) &src.csum.hi); + dst->crc64 = (struct bch_extent_crc64) { + common_fields(src), + .nonce = src.nonce, + .csum_lo = (u64 __force) src.csum.lo, + .csum_hi = (u64 __force) *((__le16 *) &src.csum.hi), + }; break; case BCH_EXTENT_ENTRY_crc128: - set_common_fields(dst->crc128, src); - dst->crc128.nonce = src.nonce; - dst->crc128.csum = src.csum; + dst->crc128 = (struct bch_extent_crc128) { + common_fields(src), + .nonce = src.nonce, + .csum = src.csum, + }; break; default: BUG(); -- 2.49.0
