[POWERPC] spufs: Handle errors in SPU coredump code, and support coredump to a pipe

Rework spufs_coredump_extra_notes_write() to check for and return errors.

If we're coredumping to a pipe we can't trust file->f_pos, we need to
maintain the foffset value passed to us. The cleanest way to do this is
to have the low level write routine increment foffset when we've
successfully written.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/asm-powerpc/spu.h b/include/asm-powerpc/spu.h
index f1b10a187987..b1accce77bb5 100644
--- a/include/asm-powerpc/spu.h
+++ b/include/asm-powerpc/spu.h
@@ -245,7 +245,7 @@ struct spufs_calls {
         long (*spu_run)(struct file *filp, __u32 __user *unpc,
                                                 __u32 __user *ustatus);
         int (*coredump_extra_notes_size)(void);
-        void (*coredump_extra_notes_write)(struct file *file);
+        int (*coredump_extra_notes_write)(struct file *file, loff_t *foffset);
         struct module *owner;
 };