From: "Liam R. Howlett" <Liam.Howlett@oracle.com>
To: Wei Yang <richard.weiyang@gmail.com>
Cc: akpm@linux-foundation.org, maple-tree@lists.infradead.org,
linux-mm@kvack.org, Sidhartha Kumar <sidhartha.kumar@oracle.com>
Subject: Re: [PATCH 2/4] maple_tree: total is not changed for nomem_one case
Date: Mon, 14 Oct 2024 21:20:28 -0400 [thread overview]
Message-ID: <slkvgcvx5qdsbs47irx2mnfjmodvjujkwinwlpn5up4vmhotwv@j5aqihxk6ykf> (raw)
In-Reply-To: <20240924123954.18933-3-richard.weiyang@gmail.com>
* Wei Yang <richard.weiyang@gmail.com> [240924 08:41]:
> If it jumps to nomem_one, the total allocated number is not changed. So
> we don't need to adjust it.
>
> For the nomem_bulk case, we know there is a valid mas->alloc. So we
> don't need to do the check.
>
> Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
> CC: Liam R. Howlett <Liam.Howlett@Oracle.com>
> CC: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
> ---
> lib/maple_tree.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/lib/maple_tree.c b/lib/maple_tree.c
> index 75be2c81f0e2..c1fb67540cc9 100644
> --- a/lib/maple_tree.c
> +++ b/lib/maple_tree.c
> @@ -1279,10 +1279,9 @@ static inline void mas_alloc_nodes(struct ma_state *mas, gfp_t gfp)
> nomem_bulk:
> /* Clean up potential freed allocations on bulk failure */
> memset(slots, 0, max_req * sizeof(unsigned long));
> + mas->alloc->total = allocated;
> nomem_one:
> mas_set_alloc_req(mas, requested);
> - if (mas->alloc && !(((unsigned long)mas->alloc & 0x1)))
> - mas->alloc->total = allocated;
> mas_set_err(mas, -ENOMEM);
> }
>
> --
> 2.34.1
>
next prev parent reply other threads:[~2024-10-15 1:20 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-24 12:39 [PATCH 0/4] cleanup maple_alloc related functions Wei Yang
2024-09-24 12:39 ` [PATCH 1/4] maple_tree: clear request_count for new allocated one Wei Yang
2024-10-15 1:18 ` Liam R. Howlett
2024-09-24 12:39 ` [PATCH 2/4] maple_tree: total is not changed for nomem_one case Wei Yang
2024-10-15 1:20 ` Liam R. Howlett [this message]
2024-09-24 12:39 ` [PATCH 3/4] maple_tree: simplify mas_push_node() Wei Yang
2024-10-15 1:29 ` Liam R. Howlett
2024-09-24 12:39 ` [PATCH 4/4] maple_tree: fix potential allocation failure even has memory Wei Yang
2024-10-11 1:27 ` Wei Yang
2024-10-15 1:14 ` Liam R. Howlett
2024-10-15 1:29 ` Liam R. Howlett
2024-09-24 15:03 ` [PATCH 0/4] cleanup maple_alloc related functions Lorenzo Stoakes
2024-09-25 1:03 ` Wei Yang
2024-09-25 7:41 ` Lorenzo Stoakes
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