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-rw-r--r--libbcachefs/bkey.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/libbcachefs/bkey.c b/libbcachefs/bkey.c
index d6960e25..0a5bfe6e 100644
--- a/libbcachefs/bkey.c
+++ b/libbcachefs/bkey.c
@@ -591,8 +591,10 @@ struct bkey_format bch2_bkey_format_done(struct bkey_format_state *s)
/* allow for extent merging: */
if (ret.bits_per_field[BKEY_FIELD_SIZE]) {
- ret.bits_per_field[BKEY_FIELD_SIZE] += 4;
- bits += 4;
+ unsigned b = min(4U, 32U - ret.bits_per_field[BKEY_FIELD_SIZE]);
+
+ ret.bits_per_field[BKEY_FIELD_SIZE] += b;
+ bits += b;
}
ret.key_u64s = DIV_ROUND_UP(bits, 64);