From: Christoph Hellwig <hch@lst.de>
To: Nilay Shroff <nilay@linux.ibm.com>
Cc: linux-block@vger.kernel.org, ming.lei@redhat.com,
dlemoal@kernel.org, hare@suse.de, axboe@kernel.dk,
gjoyce@ibm.com
Subject: Re: [PATCHv5 7/7] block: protect read_ahead_kb using q->limits_lock
Date: Mon, 3 Mar 2025 15:14:38 +0100 [thread overview]
Message-ID: <20250303141438.GE16268@lst.de> (raw)
In-Reply-To: <20250226124006.1593985-8-nilay@linux.ibm.com>
On Wed, Feb 26, 2025 at 06:10:00PM +0530, Nilay Shroff wrote:
> The bdi->ra_pages could be updated under q->limits_lock because it's
> usually calculated from the queue limits by queue_limits_commit_update.
> So protect reading/writing the sysfs attribute read_ahead_kb using
> q->limits_lock instead of q->sysfs_lock.
Looks good:
Reviewed-by: Christoph Hellwig <hch@lst.de>
next prev parent reply other threads:[~2025-03-03 14:14 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-26 12:39 [PATCHv5 0/7] block: fix lock order and remove redundant locking Nilay Shroff
2025-02-26 12:39 ` [PATCHv5 1/7] block: acquire q->limits_lock while reading sysfs attributes Nilay Shroff
2025-02-28 8:29 ` Ming Lei
2025-02-26 12:39 ` [PATCHv5 2/7] block: move q->sysfs_lock and queue-freeze under show/store method Nilay Shroff
2025-02-28 8:39 ` Ming Lei
2025-02-26 12:39 ` [PATCHv5 3/7] block: remove q->sysfs_lock for attributes which don't need it Nilay Shroff
2025-03-04 2:13 ` Ming Lei
2025-02-26 12:39 ` [PATCHv5 4/7] block: introduce a dedicated lock for protecting queue elevator updates Nilay Shroff
2025-03-04 2:23 ` Ming Lei
2025-02-26 12:39 ` [PATCHv5 5/7] block: protect nr_requests update using q->elevator_lock Nilay Shroff
2025-03-03 14:13 ` Christoph Hellwig
2025-03-04 2:24 ` Ming Lei
2025-02-26 12:39 ` [PATCHv5 6/7] block: protect wbt_lat_usec " Nilay Shroff
2025-03-03 14:14 ` Christoph Hellwig
2025-03-04 2:27 ` Ming Lei
2025-03-04 6:18 ` kernel test robot
2025-03-04 8:06 ` Nilay Shroff
2025-02-26 12:40 ` [PATCHv5 7/7] block: protect read_ahead_kb using q->limits_lock Nilay Shroff
2025-03-03 14:14 ` Christoph Hellwig [this message]
2025-03-04 2:31 ` Ming Lei
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