futex: Move futex related mm_struct data into a struct

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Having all these members in mm_struct along with the required #ifdeffery is
annoying, does not allow efficient initializing of the data with
memset() and makes extending it tedious.

Move it into a data structure and fix up all usage sites.

The extra struct for the private hash is intentional to make integration of
other conditional mechanisms easier in terms of initialization and separation.

Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260602090535.407756793@kernel.org

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Thomas Gleixner 2026-06-02 11:09:34 +02:00 • committed by Peter Zijlstra

parent d7b3f52c86

commit 1f7f4816b9

3 changed files with 98 additions and 83 deletions

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36

include/linux/futex_types.h

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12

include/linux/mm_types.h

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133

kernel/futex/core.c

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