Hi all, After merging the akpm-current tree, today's linux-next build (powerpc ppc64_defconfig) failed like this: fs/ramfs/inode.c:175:13: error: initialization of 'int (*)(struct user_namespace *, struct inode *, struct dentry *, umode_t)' {aka 'int (*)(struct user_namespace *, struct inode *, struct dentry *, short unsigned int)'} from incompatible pointer type 'int (*)(struct inode *, struct dentry *, umode_t)' {aka 'int (*)(struct inode *, struct dentry *, short unsigned int)'} [-Werror=incompatible-pointer-types] 175 | .tmpfile = ramfs_tmpfile, | ^~~~~~~~~~~~~ fs/ramfs/inode.c:175:13: note: (near initialization for 'ramfs_dir_inode_operations.tmpfile') Caused by commit 5567a1a4b1c3 ("ramfs: support O_TMPFILE") interacting with commit 549c7297717c ("fs: make helpers idmap mount aware") from the pidfd tree. I have applied this merge fix patch: From: Stephen Rothwell Date: Wed, 27 Jan 2021 23:10:31 +1100 Subject: [PATCH] ramfs-support-O_TMPFILE-fix Signed-off-by: Stephen Rothwell --- fs/ramfs/inode.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/ramfs/inode.c b/fs/ramfs/inode.c index b4a37102adf2..ba8e20584811 100644 --- a/fs/ramfs/inode.c +++ b/fs/ramfs/inode.c @@ -151,7 +151,8 @@ static int ramfs_symlink(struct user_namespace *mnt_userns, struct inode *dir, return error; } -static int ramfs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode) +static int ramfs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir, + struct dentry *dentry, umode_t mode) { struct inode *inode; -- 2.29.2 -- Cheers, Stephen Rothwell