From: Gregory Price <gourry@gourry.net>
To: linux-mm@kvack.org
Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
kernel-team@meta.com, nehagholkar@meta.com, abhishekd@meta.com,
david@redhat.com, nphamcs@gmail.com, gourry@gourry.net,
akpm@linux-foundation.org, hannes@cmpxchg.org, kbusch@meta.com,
ying.huang@linux.alibaba.com, feng.tang@intel.com,
donettom@linux.ibm.com
Subject: [PATCH v3 1/6] migrate: Allow migrate_misplaced_folio_prepare() to accept a NULL VMA.
Date: Mon, 6 Jan 2025 19:03:41 -0500 [thread overview]
Message-ID: <20250107000346.1338481-2-gourry@gourry.net> (raw)
In-Reply-To: <20250107000346.1338481-1-gourry@gourry.net>
migrate_misplaced_folio_prepare() may be called on a folio without
a VMA, and so it must be made to accept a NULL VMA.
Suggested-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Gregory Price <gourry@gourry.net>
---
mm/migrate.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/migrate.c b/mm/migrate.c
index caadbe393aa2..ea20d9bc4f40 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -2627,7 +2627,7 @@ int migrate_misplaced_folio_prepare(struct folio *folio,
* See folio_likely_mapped_shared() on possible imprecision
* when we cannot easily detect if a folio is shared.
*/
- if ((vma->vm_flags & VM_EXEC) &&
+ if (vma && (vma->vm_flags & VM_EXEC) &&
folio_likely_mapped_shared(folio))
return -EACCES;
--
2.47.1
next prev parent reply other threads:[~2025-01-07 0:03 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-07 0:03 [RFC v3 PATCH 0/5] Promotion of Unmapped Page Cache Folios Gregory Price
2025-01-07 0:03 ` Gregory Price [this message]
2025-01-07 0:03 ` [PATCH v3 2/6] memory: move conditionally defined enums use inside ifdef tags Gregory Price
2025-01-21 4:33 ` Bharata B Rao
2025-01-22 18:01 ` Gregory Price
2025-01-23 3:07 ` Bharata B Rao
2025-01-07 0:03 ` [PATCH v3 3/6] memory: allow non-fault migration in numa_migrate_check path Gregory Price
2025-01-07 0:03 ` [PATCH v3 4/6] vmstat: add page-cache numa hints Gregory Price
2025-01-07 0:03 ` [PATCH v3 5/6] migrate: implement migrate_misplaced_folio_batch Gregory Price
2025-01-07 0:03 ` [PATCH v3 6/6] migrate,sysfs: add pagecache promotion Gregory Price
2025-01-22 11:16 ` [RFC v3 PATCH 0/5] Promotion of Unmapped Page Cache Folios Huang, Ying
2025-01-22 16:48 ` Gregory Price
2025-01-23 3:46 ` Huang, Ying
2025-01-23 14:55 ` Gregory Price
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=20250107000346.1338481-2-gourry@gourry.net \
--to=gourry@gourry.net \
--cc=abhishekd@meta.com \
--cc=akpm@linux-foundation.org \
--cc=david@redhat.com \
--cc=donettom@linux.ibm.com \
--cc=feng.tang@intel.com \
--cc=hannes@cmpxchg.org \
--cc=kbusch@meta.com \
--cc=kernel-team@meta.com \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=nehagholkar@meta.com \
--cc=nphamcs@gmail.com \
--cc=ying.huang@linux.alibaba.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