From: Matthew Wilcox <willy@infradead.org>
To: Miaohe Lin <linmiaohe@huawei.com>
Cc: akpm@linux-foundation.org, ziy@nvidia.com,
william.kucharski@oracle.com, vbabka@suse.cz,
richard.weiyang@linux.alibaba.com, peterx@redhat.com,
anshuman.khandual@arm.com, thomas_os@shipmail.org,
rcampbell@nvidia.com, aneesh.kumar@linux.ibm.com,
yang.shi@linux.alibaba.com, linux-kernel@vger.kernel.org,
linux-mm@kvack.org
Subject: Re: [PATCH 1/6] mm/huge_memory.c: rework the function vma_adjust_trans_huge()
Date: Sat, 13 Mar 2021 20:03:59 +0000 [thread overview]
Message-ID: <20210313200359.GL2577561@casper.infradead.org> (raw)
In-Reply-To: <20210313103225.16607-2-linmiaohe@huawei.com>
On Sat, Mar 13, 2021 at 05:32:19AM -0500, Miaohe Lin wrote:
> +static inline void try_to_split_huge_pmd_address(struct vm_area_struct *vma, unsigned long address)
> +{
> + if (address & ~HPAGE_PMD_MASK &&
> + range_in_vma(vma, address & HPAGE_PMD_MASK,
> + (address & HPAGE_PMD_MASK) + HPAGE_PMD_SIZE))
> + split_huge_pmd_address(vma, address, false, NULL);
> +}
This isn't "try to split". This is "split if needed". I think the
comments also need to be moved up here.
I'm not even sure this is really an improvement.
next prev parent reply other threads:[~2021-03-13 20:05 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-13 10:32 [PATCH 0/6] Some cleanups for huge_memory Miaohe Lin
2021-03-13 10:32 ` [PATCH 1/6] mm/huge_memory.c: rework the function vma_adjust_trans_huge() Miaohe Lin
2021-03-13 20:03 ` Matthew Wilcox [this message]
2021-03-15 2:04 ` Miaohe Lin
2021-03-13 10:32 ` [PATCH] mm/huge_memory.c: use helper function migration_entry_to_page() Miaohe Lin
2021-03-13 10:36 ` Miaohe Lin
2021-03-13 10:32 ` [PATCH 2/6] mm/huge_memory.c: make get_huge_zero_page() return bool Miaohe Lin
2021-03-13 10:32 ` [PATCH 3/6] mm/huge_memory.c: rework the function do_huge_pmd_numa_page() slightly Miaohe Lin
2021-03-13 10:32 ` [PATCH 4/6] mm/huge_memory.c: remove redundant PageCompound() check Miaohe Lin
2021-03-13 10:32 ` [PATCH 5/6] mm/huge_memory.c: remove unused macro TRANSPARENT_HUGEPAGE_DEBUG_COW_FLAG Miaohe Lin
2021-03-13 10:32 ` [PATCH 6/6] mm/huge_memory.c: use helper function migration_entry_to_page() Miaohe Lin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210313200359.GL2577561@casper.infradead.org \
--to=willy@infradead.org \
--cc=akpm@linux-foundation.org \
--cc=aneesh.kumar@linux.ibm.com \
--cc=anshuman.khandual@arm.com \
--cc=linmiaohe@huawei.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=peterx@redhat.com \
--cc=rcampbell@nvidia.com \
--cc=richard.weiyang@linux.alibaba.com \
--cc=thomas_os@shipmail.org \
--cc=vbabka@suse.cz \
--cc=william.kucharski@oracle.com \
--cc=yang.shi@linux.alibaba.com \
--cc=ziy@nvidia.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox