vfs: make get_sb_pseudo set s_maxbytes to value that can be cast to signed

get_sb_pseudo sets s_maxbytes to ~0ULL which becomes negative when cast
to a signed value.  Fix it to use MAX_LFS_FILESIZE which casts properly
to a positive signed value.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Steve French <smfrench@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Robert Love <rlove@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/libfs.c b/fs/libfs.c
index ddfa89948c3f1e6cbf553f213883cb2ca2a4ed5e..dcec3d3ea64f944cd51d36f35b4150279c5659f2 100644 (file)
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -217,7 +217,7 @@ int get_sb_pseudo(struct file_system_type *fs_type, char *name,
                return PTR_ERR(s);
 
        s->s_flags = MS_NOUSER;
-       s->s_maxbytes = ~0ULL;
+       s->s_maxbytes = MAX_LFS_FILESIZE;
        s->s_blocksize = PAGE_SIZE;
        s->s_blocksize_bits = PAGE_SHIFT;
        s->s_magic = magic;