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From: Huangzhaoyang <huangzhaoyang@gmail.com>
To: David Howells <dhowells@redhat.com>,
	Marc Dionne <marc.dionne@auristor.com>,
	Zhaoyang Huang <zhaoyang.huang@unisoc.com>,
	linux-kernel@vger.kernel.org
Subject: [PATCH] fs: judging context via current_is_kswapd instead of gfp_flag
Date: Wed,  8 Dec 2021 16:37:38 +0800	[thread overview]
Message-ID: <1638952658-20285-1-git-send-email-huangzhaoyang@gmail.com> (raw)

From: Zhaoyang Huang <zhaoyang.huang@unisoc.com>

Kswapd uses GFP_KERNEL as gfp_flag which make the judgment of
context is unexpected. fix it by using current_is_kswapd.

Signed-off-by: Zhaoyang Huang <zhaoyang.huang@unisoc.com>
---
 fs/afs/file.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/afs/file.c b/fs/afs/file.c
index eb11d04..6c199d5 100644
--- a/fs/afs/file.c
+++ b/fs/afs/file.c
@@ -485,7 +485,7 @@ static int afs_releasepage(struct page *page, gfp_t gfp_flags)
 	 * elected to wait */
 #ifdef CONFIG_AFS_FSCACHE
 	if (PageFsCache(page)) {
-		if (!(gfp_flags & __GFP_DIRECT_RECLAIM) || !(gfp_flags & __GFP_FS))
+		if (current_is_kswapd() || !(gfp_flags & __GFP_FS))
 			return false;
 		wait_on_page_fscache(page);
 	}
-- 
1.9.1


             reply	other threads:[~2021-12-08  8:37 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-08  8:37 Huangzhaoyang [this message]
2021-12-08 20:26 ` David Howells
2021-12-10  1:19   ` Zhaoyang Huang
2021-12-21 15:00   ` David Howells
2021-12-22  8:02     ` Zhaoyang Huang

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