kmalloc() and co. don't always allocate a power of 2 number of bytes. There are some special handling for 64<n<=96 and 128<n<=192 cases.
So trust kmalloc() algorithm instead of forcing a power of 2 allocation. This can saves a few bytes of memory and still make use of all the memory allocated. On the other side, it may require an additional realloc() in some cases. Signed-off-by: Christophe JAILLET <[email protected]> --- fs/bcachefs/printbuf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/bcachefs/printbuf.c b/fs/bcachefs/printbuf.c index 77bee9060bfe..34527407e950 100644 --- a/fs/bcachefs/printbuf.c +++ b/fs/bcachefs/printbuf.c @@ -28,7 +28,7 @@ int bch2_printbuf_make_room(struct printbuf *out, unsigned extra) if (out->pos + extra < out->size) return 0; - new_size = roundup_pow_of_two(out->size + extra); + new_size = kmalloc_size_roundup(out->size + extra); /* * Note: output buffer must be freeable with kfree(), it's not required -- 2.34.1
