From: Jens Axboe <axboe@kernel.dk>
To: NeilBrown <neilb@suse.de>, Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-block@vger.kernel.org
Subject: Re: [PATCH 1/7] block: change wait on bd_claiming to use a var_waitqueue, not a bit_waitqueue
Date: Mon, 16 Sep 2024 21:12:02 -0600 [thread overview]
Message-ID: <68e8c574-1266-42e1-9d0d-ed837c7105b6@kernel.dk> (raw)
In-Reply-To: <20240826063659.15327-2-neilb@suse.de>
On 8/26/24 12:30 AM, NeilBrown wrote:
> bd_prepare_to_claim() waits for a var to change, not for a bit to be
> cleared.
> So change from bit_waitqueue() to __var_waitqueue() and correspondingly
> use wake_up_var().
> This will allow a future patch which change the "bit" function to expect
> an "unsigned long *" instead of "void *".
Looks fine to me - since this one is separate from the series, I can snag
it and shove it into the block side so it'll make 6.12-rc1. Then at least
it won't be a dependency for the rest of the series post that.
--
Jens Axboe
next prev parent reply other threads:[~2024-09-17 3:12 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-26 6:30 [PATCH 0/7 v2 RFC] Make wake_up_{bit,var} less fragile NeilBrown
2024-08-26 6:30 ` [PATCH 1/7] block: change wait on bd_claiming to use a var_waitqueue, not a bit_waitqueue NeilBrown
2024-09-17 3:12 ` Jens Axboe [this message]
2024-09-17 21:54 ` NeilBrown
2024-09-17 3:13 ` (subset) " Jens Axboe
2024-08-26 6:30 ` [PATCH 2/7] sched: change wake_up_bit() and related function to expect unsigned long * NeilBrown
2024-09-16 11:28 ` Peter Zijlstra
2024-09-16 11:48 ` NeilBrown
2024-09-16 18:18 ` Peter Zijlstra
2024-09-16 20:37 ` NeilBrown
2024-08-26 6:31 ` [PATCH 3/7] sched: Improve documentation for wake_up_bit/wait_on_bit family of functions NeilBrown
2024-08-26 6:31 ` [PATCH 4/7] sched: Document wait_var_event() family of functions and wake_up_var() NeilBrown
2024-08-26 6:31 ` [PATCH 5/7] sched: Add test_and_clear_wake_up_bit() and atomic_dec_and_wake_up() NeilBrown
2024-08-26 6:31 ` [PATCH 6/7] sched: Add wait/wake interface for variable updated under a lock NeilBrown
2024-08-26 6:31 ` [PATCH 7/7] Block: switch bd_prepare_to_claim to use wait_var_event_mutex() NeilBrown
2024-09-15 23:52 ` [PATCH 0/7 v2 RFC] Make wake_up_{bit,var} less fragile NeilBrown
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