Re: [PATCH] FS-Cache: Add missing initialization of ret in cachefiles_write_page()

[Geert Uytterhoeven]

Hi David,

On Thu, Nov 12, 2015 at 11:15 AM, David Howells <dhowells@xxxxxxxxxx> wrote:
> Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote:
>
>> -     int ret;
>> +     int ret = 0;
>
> This isn't quite the right solution.  The uninitialised error path needs to
> set -ENOBUFS.

That's what your commit 102f4d900c9c8f5e ("FS-Cache: Handle a write to the
page immediately beyond the EOF marker") does, and is also in its commit
description:

    Whilst we're at it, change the triggered assertion in CacheFiles to just
    return -ENOBUFS instead.

"ret" is used only to print the original error in a debug message.

> Unfortunately, my compiler doesn't show a warning:-/

Need old gcc (4.1.2 ;-)

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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