6.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ahelenia Ziemiańska <nabijaczleweli@xxxxxxxxxxxxxxxxxx>
[ Upstream commit 576d498e0ac5caff2d9f6312573ab54d98f12d32 ]
Same logic applies here: this can fill up the pipe, and pollers that rely
on getting IN_MODIFY notifications never wake up.
Fixes: 983652c69199 ("splice: report related fsnotify events")
Link: https://lore.kernel.org/linux-fsdevel/jbyihkyk5dtaohdwjyivambb2gffyjs3dodpofafnkkunxq7bu@jngkdxx65pux/t/#u
Link: https://bugs.debian.org/1039488
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@xxxxxxxxxxxxxxxxxx>
Acked-by: Jan Kara <jack@xxxxxxx>
Reviewed-by: Amir Goldstein <amir73il@xxxxxxxxx>
Message-Id: <10d76dd8c85017ae3cd047c9b9a32e26daefdaa2.1688393619.git.nabijaczleweli@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Christian Brauner <brauner@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
fs/splice.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/fs/splice.c b/fs/splice.c
index c08eb445a1d20..3ae2de263e806 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -1815,6 +1815,11 @@ long do_tee(struct file *in, struct file *out, size_t len, unsigned int flags)
}
}
+ if (ret > 0) {
+ fsnotify_access(in);
+ fsnotify_modify(out);
+ }
+
return ret;
}
--
2.40.1
