From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from 013.lax.mailroute.net (013.lax.mailroute.net [199.89.1.16]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 85C973375D5 for ; Thu, 14 May 2026 16:20:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=199.89.1.16 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778775623; cv=none; b=WJXv87A+QmCHCzAEQPMQ5HQrMpaA0rb1AkrRxl6Kh8GFWPK6kjRKY5KUSSUel8tl93WHt1MiHp7ZaiswH+NfZWkCGXnfdr+rxmoOJ2TdGbt/W3Ptmuy+zsuZ1nTGQAYKS189inbi44Fl9RGrts+uJ16jUok5flQoSaEhnOVW/Wo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778775623; c=relaxed/simple; bh=yDNGfqtK2za6RKRqCFOlNNlb8hjQwdUg4Syhq7Dtips=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=p0uxTdH7GhODvelUmju7NjLIp4xzEwPom31vbvdxaimRjBOoj7+lGSTupyakhzMO6wp6b06ikZw8gU0ocWkqW1R5fBBXVUzjUd44GLHrKXMUXyIWdjfguuW6l1fd+W/QUS1ZLA2EnK0O/eUieBFZo9LeNldlAEXL2wmtYWfHJyc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=acm.org; spf=pass smtp.mailfrom=acm.org; dkim=pass (2048-bit key) header.d=acm.org header.i=@acm.org header.b=vFHloJp5; arc=none smtp.client-ip=199.89.1.16 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=acm.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=acm.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=acm.org header.i=@acm.org header.b="vFHloJp5" Received: from localhost (localhost [127.0.0.1]) by 013.lax.mailroute.net (Postfix) with ESMTP id 4gGbCS4qPxzlfddr; Thu, 14 May 2026 16:20:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=acm.org; h= content-transfer-encoding:content-type:content-type:in-reply-to :from:from:content-language:references:subject:subject :user-agent:mime-version:date:date:message-id:received:received; s=mr01; t=1778775616; x=1781367617; bh=yDNGfqtK2za6RKRqCFOlNNlb 8hjQwdUg4Syhq7Dtips=; b=vFHloJp5TqaOiYCV07i/N1l6vtidxs4hIQJPaKFy XvBbeaG8XcfeMdslBK6EcoR+3Dj7DVtoJYjuLlv5iVt6g6yUAwjsku4TLkDv1jSY iN3IHuK6NY2XPU+IYn0ufZnfVL96uD1pUKtxN4pUumP/c0VAmAJxXbYiBEJZBKSw XRqM7V9BOAHaA0nn9BmPt8jraEaDm0/cLBLL4vMf9f7AnRXKfFBd+r4VKb1JgFz8 /yL6zY+Og3i12NZIN6W2go8wk9hc31ry9glyp2biPSJKFuyGgfsyd+JmdP2Cysuk aiK9Q+aziRkYU287hYkC1k9hs5WVCXww/pC830VlRw9RDw== X-Virus-Scanned: by MailRoute Received: from 013.lax.mailroute.net ([127.0.0.1]) by localhost (013.lax [127.0.0.1]) (mroute_mailscanner, port 10029) with LMTP id 8evFEKxvBj8R; Thu, 14 May 2026 16:20:16 +0000 (UTC) Received: from [100.119.48.131] (unknown [104.135.180.219]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: bvanassche@acm.org) by 013.lax.mailroute.net (Postfix) with ESMTPSA id 4gGbCL0Dthzlfvq7; Thu, 14 May 2026 16:20:13 +0000 (UTC) Message-ID: Date: Thu, 14 May 2026 09:20:12 -0700 Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 1/2] ufs: core: Introduce ufshcd_mcq_poll_n_cqe_lock() To: =?UTF-8?B?UGV0ZXIgV2FuZyAo546L5L+h5Y+LKQ==?= , "martin.petersen@oracle.com" Cc: "vamshigajjela@google.com" , "alok.a.tiwari@oracle.com" , "linux-scsi@vger.kernel.org" , "chenyuan0y@gmail.com" , AngeloGioacchino Del Regno , "ping.gao@samsung.com" , "matthias.bgg@gmail.com" , "James.Bottomley@HansenPartnership.com" References: <20260402171404.3008494-1-bvanassche@acm.org> <20260402171404.3008494-2-bvanassche@acm.org> <459ba5ca0f24ce49fd7de7ae6e014588f40e2445.camel@mediatek.com> <23d57dd91882a3014c0d97a7b08b81117ade5b72.camel@mediatek.com> Content-Language: en-US From: Bart Van Assche In-Reply-To: <23d57dd91882a3014c0d97a7b08b81117ade5b72.camel@mediatek.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable On 5/14/26 12:34 AM, Peter Wang (=E7=8E=8B=E4=BF=A1=E5=8F=8B) wrote: > However, the UFS ISR still cannot acquire > the spinlock and executes an unknown task that disables IRQs, > the duration of which is controlled by F2FS. I see this as an F2FS bug. It is widely known that bi_end_io callbacks may be called from interrupt context and hence should finish quickly. Thanks, Bart.