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From: Namjae Jeon <linkinjeon@kernel.org>
To: linux-cifs@vger.kernel.org
Cc: smfrench@gmail.com, senozhatsky@chromium.org, tom@talpey.com,
	atteh.mailbox@gmail.com, Namjae Jeon <linkinjeon@kernel.org>
Subject: [PATCH 1/2] ksmbd: avoid reclaiming expired durable opens by the client
Date: Tue, 21 May 2024 22:57:52 +0900	[thread overview]
Message-ID: <20240521135753.5108-1-linkinjeon@kernel.org> (raw)

The expired durable opens should not be reclaimed by client.
This patch add ->durable_scavenger_timeout to fp and check it in
ksmbd_lookup_durable_fd().

Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
---
 fs/smb/server/vfs_cache.c | 9 ++++++++-
 fs/smb/server/vfs_cache.h | 1 +
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/fs/smb/server/vfs_cache.c b/fs/smb/server/vfs_cache.c
index 6cb599cd287e..a6804545db28 100644
--- a/fs/smb/server/vfs_cache.c
+++ b/fs/smb/server/vfs_cache.c
@@ -476,7 +476,10 @@ struct ksmbd_file *ksmbd_lookup_durable_fd(unsigned long long id)
 	struct ksmbd_file *fp;
 
 	fp = __ksmbd_lookup_fd(&global_ft, id);
-	if (fp && fp->conn) {
+	if (fp && (fp->conn ||
+		   (fp->durable_scavenger_timeout &&
+		    (fp->durable_scavenger_timeout <
+		     jiffies_to_msecs(jiffies))))) {
 		ksmbd_put_durable_fd(fp);
 		fp = NULL;
 	}
@@ -717,6 +720,10 @@ static bool session_fd_check(struct ksmbd_tree_connect *tcon,
 	fp->tcon = NULL;
 	fp->volatile_id = KSMBD_NO_FID;
 
+	if (fp->durable_timeout)
+		fp->durable_scavenger_timeout =
+			jiffies_to_msecs(jiffies) + fp->durable_timeout;
+
 	return true;
 }
 
diff --git a/fs/smb/server/vfs_cache.h b/fs/smb/server/vfs_cache.h
index 5a225e7055f1..f2ab1514e81a 100644
--- a/fs/smb/server/vfs_cache.h
+++ b/fs/smb/server/vfs_cache.h
@@ -101,6 +101,7 @@ struct ksmbd_file {
 	struct list_head		lock_list;
 
 	int				durable_timeout;
+	int				durable_scavenger_timeout;
 
 	/* if ls is happening on directory, below is valid*/
 	struct ksmbd_readdir_data	readdir_data;
-- 
2.25.1


             reply	other threads:[~2024-05-21 13:58 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-05-21 13:57 Namjae Jeon [this message]
2024-05-21 13:57 ` [PATCH 2/2] ksmbd: ignore trailing slashes in share paths Namjae Jeon
2024-05-21 15:10 ` [PATCH 1/2] ksmbd: avoid reclaiming expired durable opens by the client Tom Talpey
2024-05-22  5:13   ` Namjae Jeon
2024-05-22 19:46     ` Tom Talpey
2024-05-22 23:31       ` Namjae Jeon
2024-05-23 13:35         ` Tom Talpey
2024-05-23 14:00           ` Namjae Jeon

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