linux-ext4 - [PATCH 20/22] libfuse: add swapfile support for iomap files

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <176169813894.1427432.14190543050440526022.stgit@frogsfrogsfrogs>
Date: Tue, 28 Oct 2025 18:04:31 -0700
From: "Darrick J. Wong" <djwong@...nel.org>
To: djwong@...nel.org, bschubert@....com
Cc: linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org,
 bernd@...ernd.com, miklos@...redi.hu, joannelkoong@...il.com, neal@...pa.dev
Subject: [PATCH 20/22] libfuse: add swapfile support for iomap files

From: Darrick J. Wong <djwong@...nel.org>

Add flags for swapfile activation and deactivation.

Signed-off-by: "Darrick J. Wong" <djwong@...nel.org>
---
 include/fuse_common.h |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/fuse_common.h b/include/fuse_common.h
index eb08320bc8863f..83ab3f54f54a2e 100644
--- a/include/fuse_common.h
+++ b/include/fuse_common.h
@@ -1190,6 +1190,9 @@ int fuse_convert_to_conn_want_ext(struct fuse_conn_info *conn);
 #define FUSE_IOMAP_OP_ATOMIC		(1U << 9)
 #define FUSE_IOMAP_OP_DONTCACHE		(1U << 10)

+/* swapfile config operation */
+#define FUSE_IOMAP_OP_SWAPFILE		(1U << 30)
+
 /* pagecache writeback operation */
 #define FUSE_IOMAP_OP_WRITEBACK		(1U << 31)

@@ -1229,6 +1232,8 @@ static inline bool fuse_iomap_need_write_allocate(unsigned int opflags,
 #define FUSE_IOMAP_IOEND_APPEND		(1U << 4)
 /* is pagecache writeback */
 #define FUSE_IOMAP_IOEND_WRITEBACK	(1U << 5)
+/* swapfile deactivation */
+#define FUSE_IOMAP_IOEND_SWAPOFF	(1U << 6)

 /* enable fsdax */
 #define FUSE_IFLAG_DAX			(1U << 0)