From: Matthew Wilcox <willy@infradead.org>
To: "Pankaj Raghav (Samsung)" <kernel@pankajraghav.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>,
Andrew Morton <akpm@linux-foundation.org>,
Hugh Dickins <hughd@google.com>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Christian Brauner <brauner@kernel.org>, Jan Kara <jack@suse.cz>,
Anna Schumaker <Anna.Schumaker@netapp.com>,
linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
Baolin Wang <baolin.wang@linux.alibaba.com>
Subject: Re: Re: [PATCH v2] tmpfs: fault in smaller chunks if large folio allocation not allowed
Date: Thu, 26 Sep 2024 14:52:59 +0100 [thread overview]
Message-ID: <ZvVnO777wfXcfjYX@casper.infradead.org> (raw)
In-Reply-To: <nhnpbkyxbbvjl2wg77x2f7gx3b3wj7jujfkucc33tih3d4jnpx@5dg757r4go64>
On Thu, Sep 26, 2024 at 10:38:34AM +0200, Pankaj Raghav (Samsung) wrote:
> > So this is why I don't use mapping_set_folio_order_range() here, but
> > correct me if I am wrong.
>
> Yeah, the inode is active here as the max folio size is decided based on
> the write size, so probably mapping_set_folio_order_range() will not be
> a safe option.
You really are all making too much of this. Here's the patch I think we
need:
+++ b/mm/shmem.c
@@ -2831,7 +2831,8 @@ static struct inode *__shmem_get_inode(struct mnt_idmap *idmap,
cache_no_acl(inode);
if (sbinfo->noswap)
mapping_set_unevictable(inode->i_mapping);
- mapping_set_large_folios(inode->i_mapping);
+ if (sbinfo->huge)
+ mapping_set_large_folios(inode->i_mapping);
switch (mode & S_IFMT) {
default:
next prev parent reply other threads:[~2024-09-26 13:53 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-14 14:06 [PATCH -next] " Kefeng Wang
2024-09-15 10:40 ` Matthew Wilcox
2024-09-18 3:55 ` Kefeng Wang
2024-09-20 14:36 ` [PATCH v2] " Kefeng Wang
2024-09-22 0:35 ` Matthew Wilcox
2024-09-23 1:39 ` Kefeng Wang
2024-09-26 8:38 ` Pankaj Raghav (Samsung)
2024-09-26 13:52 ` Matthew Wilcox [this message]
2024-09-26 14:20 ` Kefeng Wang
2024-09-26 14:58 ` Matthew Wilcox
2024-09-30 1:27 ` Kefeng Wang
2024-09-30 2:02 ` Baolin Wang
2024-09-30 2:30 ` Kefeng Wang
2024-09-30 2:52 ` Baolin Wang
2024-09-30 3:15 ` Kefeng Wang
2024-09-30 6:48 ` Baolin Wang
2024-10-09 7:09 ` Kefeng Wang
2024-10-09 8:52 ` Baolin Wang
2024-10-11 6:59 ` [PATCH v3] tmpfs: don't enable large folios if not supported Kefeng Wang
2024-10-12 3:59 ` Baolin Wang
2024-10-14 2:36 ` Kefeng Wang
2024-10-17 14:17 ` [PATCH v4] " Kefeng Wang
2024-10-18 1:48 ` Baolin Wang
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