[PATCH 01/17] fs: boot: Update fs_read_alloc() to use abuf

[Tom Rini]

On Wed, Mar 19, 2025 at 03:37:55PM +0100, Simon Glass wrote:

> Using an abuf for this function simplifies returning the size and also
> makes it easier to free memory afterwards. Update the API and callers.
> 
> Signed-off-by: Simon Glass <sjg at chromium.org>
> ---
> 
>  boot/bootmeth-uclass.c | 19 ++++++++++---------
>  fs/fs.c                | 25 +++++++++++--------------
>  include/fs.h           |  8 +++++---
>  3 files changed, 26 insertions(+), 26 deletions(-)

So we grow platforms by ~200 bytes:
            sama7g54_curiosity_nandflash: all +204 text +204
               u-boot: add: 6/0, grow: 2/0 bytes: 204/0 (204)
                 function                                   old     new   delta
                 abuf_realloc                                 -      76     +76
                 abuf_uninit_move                             -      42     +42
                 memdup                                       -      28     +28
                 abuf_uninit                                  -      24     +24
                 fs_read_alloc                               96     106     +10
                 fs_load_alloc                              114     124     +10
                 abuf_init                                    -      10     +10
                 abuf_addr                                    -       4      +4

To move away from standard buffer usage and unwinding to move to
something homegrown instead. I am not a fan of growing using abuf here.
When it was introduced in:

commit 67bc59df05331eaac56cd0a00219d1386130aee2
Author: Simon Glass <sjg at chromium.org>
Date:   Sat Sep 25 07:03:07 2021 -0600

    Add support for an owned buffer

It sounded like something for some special cases. Not something to be
used everywhere to be different.

-- 
Tom
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