Sergey Senozhatsky b0624f0b22 zram: rework recompression loop
This reworks recompression loop handling:

- set a rule that stream-put NULLs the stream pointer If the loop
  returns with a non-NULL stream then it's a successful recompression,
  otherwise the stream should always be NULL.

- do not count the number of recompressions Mark object as
  incompressible as soon as the algorithm with the highest priority failed
  to compress that object.

- count compression errors as resource usage Even if compression has
  failed, we still need to bump num_recomp_pages counter.

Link: https://lkml.kernel.org/r/20250303022425.285971-11-senozhatsky@chromium.org
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Hillf Danton <hdanton@sina.com>
Cc: Kairui Song <ryncsn@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Yosry Ahmed <yosry.ahmed@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-03-16 22:06:35 -07:00
2025-03-16 22:06:35 -07:00
2024-09-01 20:43:24 -07:00
2025-03-16 22:06:23 -07:00
2025-02-04 11:27:45 -05:00
2022-09-28 09:02:20 +02:00
2025-03-16 22:06:01 -07:00
2025-03-09 13:45:25 -10:00
2024-03-18 03:36:32 -06:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
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