linux-kernel - Re: [PATCH v3 2/3] btrfs: utilize IOP_FASTPERM_MAY

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Message-ID: <20251110154032.GY13846@twin.jikos.cz>
Date: Mon, 10 Nov 2025 16:40:32 +0100
From: David Sterba <dsterba@...e.cz>
To: Mateusz Guzik <mjguzik@...il.com>
Cc: brauner@...nel.org, viro@...iv.linux.org.uk, jack@...e.cz,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-ext4@...r.kernel.org, tytso@....edu,
	torvalds@...ux-foundation.org, josef@...icpanda.com,
	linux-btrfs@...r.kernel.org
Subject: Re: [PATCH v3 2/3] btrfs: utilize IOP_FASTPERM_MAY_EXEC

On Fri, Nov 07, 2025 at 03:21:48PM +0100, Mateusz Guzik wrote:
> Root filesystem was ext4, btrfs was mounted on /testfs.
> 
> Then issuing access(2) in a loop on /testfs/repos/linux/include/linux/fs.h
> on Sapphire Rapids (ops/s):
> 
> before: 3447976
> after:	3620879 (+5%)
> 
> Signed-off-by: Mateusz Guzik <mjguzik@...il.com>

Thanks.

Acked-by: David Sterba <dsterba@...e.com>