linux-ext4 - Re: [e2fsprogs][1.42.9 to lastest]maybe a bug

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Message-ID: <20140308154106.GB11633@thunk.org>
Date:	Sat, 8 Mar 2014 10:41:06 -0500
From:	Theodore Ts'o <tytso@....edu>
To:	Sela Selah <selahsolar@...il.com>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: [e2fsprogs][1.42.9 to lastest]maybe a bug

On Sat, Mar 08, 2014 at 10:46:03AM +0800, Sela Selah wrote:
> appear at version 1.42.9 to the lastest commit
> the if statements is *NOT* consisted with the comments, results a  compile
> error on mips64el: the __u64/__s64 should unsigned/signed long but
> unsigned/signed long long.

What's the compile error which you are seeing with mips64el?

The change made to prefer [un]signed long long over [un]signed long
when both types are 64-bits was deliberate:

commit 3a941bef3b9036ca3db9d510c71bcae801ea4dd1
Author: Andreas Dilger <adilger@...ger.ca>
Date:   Sun Dec 15 22:09:24 2013 -0500

    build: use long long for __u64 by default
    
    Don't print a verbose configure error in parse-types.h if
    <asm/types.h> missing and __[SU]*_TYPEDEF is unset.  This is
    always the case for non-Linux builds.
    
    The printf formatting strings all use "%llu" for printing 64-bit
    values and this it produces a large number of warnings if __u64
    is defined as "unsigned long".  If __U64_TYPEDEF isn't set use
    "unsigned long long" for __u64 in ext2-types.h and blkid-types.h
    by default instead of using "unsigned long".
    
    Fix a few places where "%d" or "%u" or "%Lu" were used to print a
    64-bit value, by converting them to use "%lld" or "%llu" instead.
    
    Fix a few places where "%lu" was used to print .tv_usec, by casting
    the variable to "(long)" since .tv_usec is "int" on some systems.
    
    Signed-off-by: Andreas Dilger <adilger@...ger.ca>
    Signed-off-by: "Theodore Ts'o" <tytso@....edu>

Andreas didn't fix up the comments in the header file, but the change
made wasn't an accident.

Maybe there's some other way we can address the compile failure on
mips64el?

						- Ted
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