The patch below does not apply to the 4.19-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
Possible dependencies:
4a6f278d4827 ("fuse: add file_modified() to fallocate")
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 4a6f278d4827b59ba26ceae0ff4529ee826aa258 Mon Sep 17 00:00:00 2001
From: Miklos Szeredi <mszeredi@xxxxxxxxxx>
Date: Fri, 28 Oct 2022 14:25:20 +0200
Subject: [PATCH] fuse: add file_modified() to fallocate
Add missing file_modified() call to fuse_file_fallocate(). Without this
fallocate on fuse failed to clear privileges.
Fixes: 05ba1f082300 ("fuse: add FALLOCATE operation")
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Miklos Szeredi <mszeredi@xxxxxxxxxx>
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 1a3afd469e3a..71bfb663aac5 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -3001,6 +3001,10 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset,
goto out;
}
+ err = file_modified(file);
+ if (err)
+ goto out;
+
if (!(mode & FALLOC_FL_KEEP_SIZE))
set_bit(FUSE_I_SIZE_UNSTABLE, &fi->state);
