| Message ID | 20240620153556.777272-1-bigeasy@linutronix.de (mailing list archive) |
|---|---|
| Headers | show |
| Series | zram: Replace bit spinlocks with a spinlock_t. | expand |
On (24/06/20 17:28), Sebastian Andrzej Siewior wrote: > this is follow up to the previous posting, making the lock > unconditionally. The original problem with bit spinlock is that it > disabled preemption and the following operations (within the atomic > section) perform operations that may sleep on PREEMPT_RT. Mike expressed > that he would like to keep using zram on PREEMPT_RT. Sorry for the delay. I guess this works for me, FWIW: Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org> Minchan, any objections?
Hi, this is follow up to the previous posting, making the lock unconditionally. The original problem with bit spinlock is that it disabled preemption and the following operations (within the atomic section) perform operations that may sleep on PREEMPT_RT. Mike expressed that he would like to keep using zram on PREEMPT_RT. v1…v2: https://lore.kernel.org/all/20240619150814.BRAvaziM@linutronix.de/: - Add the spinlock_t unconditionally - Remove ZRAM_LOCK since it has no user after the lock has been added. - Make zram_table_entry::flags an integer so struct zram_table_entry does not gain additional weight. Sebastian