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Fix BZ #16734 (fopen calls mmap to allocate buffers)

From: Paul Pluzhnikov <ppluzhnikov at gmail dot com>
To: GLIBC Devel <libc-alpha at sourceware dot org>
Date: Sat, 8 Aug 2015 17:38:02 -0700
Subject: Fix BZ #16734 (fopen calls mmap to allocate buffers)
Authentication-results: sourceware.org; auth=none

Greetings,

Previous discussion of this patch:
https://sourceware.org/ml/libc-alpha/2015-02/msg00427.html

Now that all the test failures exposed by previous patch have been
fixed, it's time to do it for realz.

Tested on Linux/x86_64, no new failures.

Thanks,


2015-08-08  Paul Pluzhnikov  <ppluzhnikov@google.com>

        [BZ #16734]
        * libio/libioP.h (ROUND_TO_PAGE, ALLOC_BUF, ALLOC_WBUF): Delete.
        (FREE_BUF): Delete.
        * libio/libio.h (_IO_FILE_complete): Delete unused _freeres_size.
        * libio/genops.c (_IO_setb): Use malloc and free directly.
        (_IO_default_doallocate, _IO_default_finish): Likewise.
        ( _IO_unbuffer_all): Likewise.
        ( libc_freeres_fn): Likewise.
        * libio/filedoalloc.c (_IO_file_doallocate): Likewise.
        * libio/wfiledoalloc.c (_IO_wfile_doallocate): Likewise.
        * libio/wgenops.c (_IO_wsetb, _IO_wdefault_finish): Likewise.
        (_IO_wdefault_doallocate): Likewise.



-- 
Paul Pluzhnikov

Attachment: pr16734-20150808.txt
Description: Text document

Follow-Ups:
- Re: Fix BZ #16734 (fopen calls mmap to allocate buffers)
  - From: Andreas Schwab

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