From nobody Sun Jun 21 16:15:04 2026 Received: from mailgw.kylinos.cn (mailgw.kylinos.cn [124.126.103.232]) (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 A50D03D6491; Thu, 2 Apr 2026 10:44:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=124.126.103.232 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775126689; cv=none; b=KGtxVgy/DIsL4c5leUAo8whQzj7yyaf7XaMEEas16wS5EacDFFQOOHwNRxfPX6XzyX4bOaubONYp1j28oOOIFv4UaRXOdUsxxntbTsfG4Z+vfXPIGvuGPsSYCZ6DWZKmmEazYMKE9M9x96krUjx9dxonzshXBzxNLQh8Vi/P91w= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775126689; c=relaxed/simple; bh=XIa89S023CaUoNLWL6GinBrdvk2MjM5r1KO8AotMdxk=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=GXObfOEeM+BaWUE75IVHn5EXM65Qro2VOAPh2fR6qojTv9/hxMu7oH8l1FFMVwi/u3E35vq/IdYmcoXGWNT3pC7uoz65NwD+CyArC3wL4cRfGDS0BMvrZJyFIvX0+RUBwfOY5xXN7N/IvCNI4vw5DQXco2VEjA3XCKEvhZ2JdjU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn; spf=pass smtp.mailfrom=kylinos.cn; arc=none smtp.client-ip=124.126.103.232 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kylinos.cn X-UUID: f223c82a2e8011f1aa26b74ffac11d73-20260402 X-CTIC-Tags: HR_CC_CHARSET, HR_CC_CHARSET_NUM, HR_CC_COUNT, HR_CC_DOMAIN_COUNT, HR_CC_NAME HR_CC_NO_NAME, HR_CHARSET, HR_CHARSET_NUM, HR_CTE_8B, HR_CTT_MISS HR_DATE_H, HR_DATE_WKD, HR_DATE_ZONE, HR_FROM_NAME, HR_SJ_DIGIT_LEN HR_SJ_LANG, HR_SJ_LEN, HR_SJ_LETTER, HR_SJ_NOR_SYM, HR_SJ_PHRASE HR_SJ_PHRASE_LEN, HR_SJ_WS, HR_TO_COUNT, HR_TO_DOMAIN_COUNT, HR_TO_NAME IP_TRUSTED, SRC_TRUSTED, DN_TRUSTED, SA_EXISTED, SN_TRUSTED SN_EXISTED, SPF_NOPASS, DKIM_NOPASS, DMARC_NOPASS, CIE_BAD CIE_GOOD, CIE_GOOD_SPF, GTI_FG_BS, GTI_RG_INFO, GTI_C_BU AMN_GOOD, ABX_MISS_RDNS X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.3.12,REQID:65256d18-e980-40df-8c39-445b830bf290,IP:15, URL:0,TC:0,Content:-25,EDM:0,RT:0,SF:-5,FILE:0,BULK:0,RULE:Release_Ham,ACT ION:release,TS:-15 X-CID-INFO: VERSION:1.3.12,REQID:65256d18-e980-40df-8c39-445b830bf290,IP:15,UR L:0,TC:0,Content:-25,EDM:0,RT:0,SF:-5,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:-15 X-CID-META: VersionHash:e7bac3a,CLOUDID:c271b9ba7d1ad6333697e6251a11e643,BulkI D:260402184439L5RY49OW,BulkQuantity:0,Recheck:0,SF:17|19|38|66|78|81|82|10 2|127|898,TC:nil,Content:0|15|50,EDM:-3,IP:-2,URL:0,File:nil,RT:nil,Bulk:n il,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BR E:0,ARC:0 X-CID-BVR: 2,SSN|SDN X-CID-BAS: 2,SSN|SDN,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR,TF_CID_SPAM_FAS,TF_CID_SPAM_FSD X-CID-RHF: D41D8CD98F00B204E9800998ECF8427E X-UUID: f223c82a2e8011f1aa26b74ffac11d73-20260402 X-User: liwang@kylinos.cn Received: from computer.. [(116.128.244.171)] by mailgw.kylinos.cn (envelope-from ) (Generic MTA with TLSv1.3 TLS_AES_256_GCM_SHA384 256/256) with ESMTP id 1784249598; Thu, 02 Apr 2026 18:44:37 +0800 From: Li Wang To: German Maglione , Vivek Goyal , Stefan Hajnoczi , Miklos Szeredi Cc: =?UTF-8?q?Eugenio=20P=C3=A9rez?= , virtualization@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Li Wang Subject: [PATCH v2 1/3] virtiofs: Complete no-reply virtio requests without parsing the out header Date: Thu, 2 Apr 2026 18:44:05 +0800 Message-Id: <20260402104407.11495-2-liwang@kylinos.cn> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260402104407.11495-1-liwang@kylinos.cn> References: <20260402104407.11495-1-liwang@kylinos.cn> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" FUSE requests that do not set FR_ISREPLY never map fuse_out_header or reply payload into the virtqueue in virtio_fs_enqueue_req(). For example, for the FORGET requests sent in fuse_force_forget(), req->out.h.len is=20 initialized to 0 in fuse_request_alloc(). On completion, copy_args_from_arg= buf()=20 must not run: it subtracts sizeof(fuse_out_header) from req->out.h.len,=20 which will cause an underflow. Always free the bounce buffer allocated by copy_args_to_argbuf() on the no-reply path so virtio_fs_enqueue_req() does not leak argbuf. In virtio_fs_requests_done_work(), only call virtio_fs_verify_response() when FR_ISREPLY is set. Signed-off-by: Li Wang --- fs/fuse/virtio_fs.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/fs/fuse/virtio_fs.c b/fs/fuse/virtio_fs.c index 2f7485ffac52..670dd413873b 100644 --- a/fs/fuse/virtio_fs.c +++ b/fs/fuse/virtio_fs.c @@ -789,7 +789,13 @@ static void virtio_fs_request_complete(struct fuse_req= *req, struct folio *folio; =20 args =3D req->args; - copy_args_from_argbuf(args, req); + if (test_bit(FR_ISREPLY, &req->flags)) + copy_args_from_argbuf(args, req); + else if (req->argbuf) { + /* Bounce buffer from virtio_fs_enqueue_req(); no reply payload to copy = */ + kfree(req->argbuf); + req->argbuf =3D NULL; + } =20 if (args->out_pages && args->page_zeroing) { len =3D args->out_args[args->out_numargs - 1].size; @@ -841,9 +847,11 @@ static void virtio_fs_requests_done_work(struct work_s= truct *work) virtqueue_disable_cb(vq); =20 while ((req =3D virtqueue_get_buf(vq, &len)) !=3D NULL) { - if (!virtio_fs_verify_response(req, len)) { - req->out.h.error =3D -EIO; - req->out.h.len =3D sizeof(struct fuse_out_header); + if (test_bit(FR_ISREPLY, &req->flags)) { + if (!virtio_fs_verify_response(req, len)) { + req->out.h.error =3D -EIO; + req->out.h.len =3D sizeof(struct fuse_out_header); + } } spin_lock(&fpq->lock); list_move_tail(&req->list, &reqs); --=20 2.34.1 From nobody Sun Jun 21 16:15:04 2026 Received: from mailgw.kylinos.cn (mailgw.kylinos.cn [124.126.103.232]) (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 66AFE3C2792; Thu, 2 Apr 2026 10:44:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=124.126.103.232 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775126688; cv=none; b=dcUzg0Vi/2gLkSch7xz0OuXZo0g0gS7NruHW4tibD+QBp4hJEtBZdpimKK2jyF4hlJc9DoYG+56chW+ZpSmAj8NxZS2MTNZp6T1wKlE+1He5F2XFtiaxDEHVqad7kNrhtpf8V9UPjLDt2FuRTpXCtlgxp0Blu+wTfsCjBBfxA48= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775126688; c=relaxed/simple; bh=WzRe1ElaUiAZDAUD8Z0ySaPxpPd+WFxyUUpzV0o7Zio=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=ZelLLdRO7LL/y+icJSNDU+j2NA+6Q2OCxnz6TLHEQHGWAdflqOGy2sejVOHS08+QxSyHZc29fGgllgSmwL60EzgFtdOVMz3xsgfo/FY0Gwt9Szru6PxVIRkzO3zXC85ThLNo6wn4ReYHKM/1bIhFVTlJymCILxo5khFfJNiG7QU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn; spf=pass smtp.mailfrom=kylinos.cn; arc=none smtp.client-ip=124.126.103.232 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kylinos.cn X-UUID: f26ba7122e8011f1aa26b74ffac11d73-20260402 X-CTIC-Tags: HR_CC_CHARSET, HR_CC_CHARSET_NUM, HR_CC_COUNT, HR_CC_DOMAIN_COUNT, HR_CC_NAME HR_CC_NO_NAME, HR_CHARSET, HR_CHARSET_NUM, HR_CTE_8B, HR_CTT_MISS HR_DATE_H, HR_DATE_WKD, HR_DATE_ZONE, HR_FROM_NAME, HR_SJ_DIGIT_LEN HR_SJ_LANG, HR_SJ_LEN, HR_SJ_LETTER, HR_SJ_NOR_SYM, HR_SJ_PHRASE HR_SJ_PHRASE_LEN, HR_SJ_WS, HR_TO_COUNT, HR_TO_DOMAIN_COUNT, HR_TO_NAME IP_TRUSTED, SRC_TRUSTED, DN_TRUSTED, SA_EXISTED, SN_TRUSTED SN_EXISTED, SPF_NOPASS, DKIM_NOPASS, DMARC_NOPASS, CIE_BAD CIE_GOOD, CIE_GOOD_SPF, GTI_FG_BS, GTI_RG_INFO, GTI_C_BU AMN_GOOD, ABX_MISS_RDNS X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.3.12,REQID:66c2cf4e-e278-4ec1-a7b6-b3b14bee27f6,IP:15, URL:0,TC:0,Content:0,EDM:-20,RT:0,SF:-5,FILE:0,BULK:0,RULE:Release_Ham,ACT ION:release,TS:-10 X-CID-INFO: VERSION:1.3.12,REQID:66c2cf4e-e278-4ec1-a7b6-b3b14bee27f6,IP:15,UR L:0,TC:0,Content:0,EDM:-20,RT:0,SF:-5,FILE:0,BULK:0,RULE:EDM_GE969F26,ACTI ON:release,TS:-10 X-CID-META: VersionHash:e7bac3a,CLOUDID:92d79792e484e174e3910bbc4cb8855b,BulkI D:26040218444103Q64BWE,BulkQuantity:0,Recheck:0,SF:17|19|38|66|78|81|82|10 2|127|898,TC:nil,Content:0|15|50,EDM:1,IP:-2,URL:0,File:nil,RT:nil,Bulk:ni l,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE :0,ARC:0 X-CID-BVR: 2,SSN|SDN X-CID-BAS: 2,SSN|SDN,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR,TF_CID_SPAM_AEC,TF_CID_SPAM_FAS,TF_CID_SPAM_FSD X-CID-RHF: D41D8CD98F00B204E9800998ECF8427E X-UUID: f26ba7122e8011f1aa26b74ffac11d73-20260402 X-User: liwang@kylinos.cn Received: from computer.. [(116.128.244.171)] by mailgw.kylinos.cn (envelope-from ) (Generic MTA with TLSv1.3 TLS_AES_256_GCM_SHA384 256/256) with ESMTP id 473390074; Thu, 02 Apr 2026 18:44:38 +0800 From: Li Wang To: German Maglione , Vivek Goyal , Stefan Hajnoczi , Miklos Szeredi Cc: =?UTF-8?q?Eugenio=20P=C3=A9rez?= , virtualization@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Li Wang Subject: [PATCH v2 2/3] virtiofs: Retry hiprio FORGET when virtqueue_add_outbuf() returns -ENOMEM Date: Thu, 2 Apr 2026 18:44:06 +0800 Message-Id: <20260402104407.11495-3-liwang@kylinos.cn> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260402104407.11495-1-liwang@kylinos.cn> References: <20260402104407.11495-1-liwang@kylinos.cn> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The -ENOMEM from virtqueue_add_outbuf() under GFP_ATOMIC is typically trans= ient. =20 Queue the FORGET on queued_reqs and return 1 so the hiprio worker backs off= and=20 retries instead of dropping the forget. This matches the existing -ENOSPC handling and avoids silent loss of nlookup decrements under memory pressure. Signed-off-by: Li Wang --- fs/fuse/virtio_fs.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/fs/fuse/virtio_fs.c b/fs/fuse/virtio_fs.c index bcba1210c797..7e4c3fa6ab57 100644 --- a/fs/fuse/virtio_fs.c +++ b/fs/fuse/virtio_fs.c @@ -611,8 +611,8 @@ static void virtio_fs_request_dispatch_work(struct work= _struct *work) } =20 /* - * Returns 1 if queue is full and sender should wait a bit before sending - * next request, 0 otherwise. + * Returns 1 if the hiprio queue is full or transient allocation failed and + * the caller should wait before submitting the next FORGET, 0 otherwise. */ static int send_forget_request(struct virtio_fs_vq *fsvq, struct virtio_fs_forget *forget, @@ -638,13 +638,13 @@ static int send_forget_request(struct virtio_fs_vq *f= svq, =20 ret =3D virtqueue_add_outbuf(vq, &sg, 1, forget, GFP_ATOMIC); if (ret < 0) { - if (ret =3D=3D -ENOSPC) { + if (ret =3D=3D -ENOSPC || ret =3D=3D -ENOMEM) { pr_debug("virtio-fs: Could not queue FORGET: err=3D%d. Will try later\n= ", ret); list_add_tail(&forget->list, &fsvq->queued_reqs); if (!in_flight) inc_in_flight_req(fsvq); - /* Queue is full */ + /* Queue full or GFP_ATOMIC allocation failure; retry later */ ret =3D 1; } else { pr_debug("virtio-fs: Could not queue FORGET: err=3D%d. Dropping it.\n", --=20 2.34.1 From nobody Sun Jun 21 16:15:04 2026 Received: from mailgw.kylinos.cn (mailgw.kylinos.cn [124.126.103.232]) (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 7969C3D9DA3; Thu, 2 Apr 2026 10:44:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=124.126.103.232 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775126688; cv=none; b=D6IBfa/+LpWVhfH0bIsQ/ahWvH/yndlbSYx+NFVpNCBHI10BQfrA3kHUHbLkdXRxkCMVP83D3YXvygi2Qe/L3pstuyQdYrES335HEg5A5NBnoYDF/jL83X1YYv3yJdWk8PD5gGfmaHCSB+dFBBcthfVw1N77letbPjkax2wY7GM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775126688; c=relaxed/simple; bh=5PFh6V4gKMSpoESN4wCoiOoII2jBB2X46Gjroqd9iQ4=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=pkQRK2WNm9G5hkPuPQZ7BdW38FCdKMKwGA2Knyb480xTZwvJ1HLR5Qx6f+GTapTq1Dcf8rL0HqdnzeAj1hPAFKJxgXuCKGLn+Jwz9Rze6zPC3IS3UPZx/jlu9AaFyTy/WRDpVphu+UwB538fqPaGVD19+Ax8IJeN/SnKnfqFx6k= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn; spf=pass smtp.mailfrom=kylinos.cn; arc=none smtp.client-ip=124.126.103.232 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kylinos.cn X-UUID: f2b016fe2e8011f1aa26b74ffac11d73-20260402 X-CTIC-Tags: HR_CC_CHARSET, HR_CC_CHARSET_NUM, HR_CC_COUNT, HR_CC_DOMAIN_COUNT, HR_CC_NAME HR_CC_NO_NAME, HR_CHARSET, HR_CHARSET_NUM, HR_CTE_8B, HR_CTT_MISS HR_DATE_H, HR_DATE_WKD, HR_DATE_ZONE, HR_FROM_NAME, HR_SJ_DIGIT_LEN HR_SJ_LANG, HR_SJ_LEN, HR_SJ_LETTER, HR_SJ_NOR_SYM, HR_SJ_PHRASE HR_SJ_PHRASE_LEN, HR_SJ_WS, HR_TO_COUNT, HR_TO_DOMAIN_COUNT, HR_TO_NAME IP_TRUSTED, SRC_TRUSTED, DN_TRUSTED, SA_EXISTED, SN_TRUSTED SN_EXISTED, SPF_NOPASS, DKIM_NOPASS, DMARC_NOPASS, CIE_BAD CIE_GOOD, CIE_GOOD_SPF, GTI_FG_BS, GTI_RG_INFO, GTI_C_BU AMN_GOOD, ABX_MISS_RDNS X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.3.12,REQID:7ca2c72d-27e8-4cdf-a593-f8ba4eb488dc,IP:15, URL:0,TC:0,Content:0,EDM:0,RT:0,SF:-5,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:10 X-CID-INFO: VERSION:1.3.12,REQID:7ca2c72d-27e8-4cdf-a593-f8ba4eb488dc,IP:15,UR L:0,TC:0,Content:0,EDM:0,RT:0,SF:-5,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:10 X-CID-META: VersionHash:e7bac3a,CLOUDID:ca62bdcd35601c49de025a87bcae02a7,BulkI D:260402184441ODBCS86Z,BulkQuantity:0,Recheck:0,SF:17|19|38|66|78|81|82|10 2|127|898,TC:nil,Content:0|15|50,EDM:-3,IP:-2,URL:0,File:nil,RT:nil,Bulk:n il,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BR E:0,ARC:0 X-CID-BVR: 2,SSN|SDN X-CID-BAS: 2,SSN|SDN,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR,TF_CID_SPAM_FAS,TF_CID_SPAM_FSD X-CID-RHF: D41D8CD98F00B204E9800998ECF8427E X-UUID: f2b016fe2e8011f1aa26b74ffac11d73-20260402 X-User: liwang@kylinos.cn Received: from computer.. [(116.128.244.171)] by mailgw.kylinos.cn (envelope-from ) (Generic MTA with TLSv1.3 TLS_AES_256_GCM_SHA384 256/256) with ESMTP id 2063312767; Thu, 02 Apr 2026 18:44:38 +0800 From: Li Wang To: German Maglione , Vivek Goyal , Stefan Hajnoczi , Miklos Szeredi Cc: =?UTF-8?q?Eugenio=20P=C3=A9rez?= , virtualization@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Li Wang Subject: [PATCH v2 3/3] virtiofs: Do not stall hiprio FORGET dispatch after dropping one request Date: Thu, 2 Apr 2026 18:44:07 +0800 Message-Id: <20260402104407.11495-4-liwang@kylinos.cn> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260402104407.11495-1-liwang@kylinos.cn> References: <20260402104407.11495-1-liwang@kylinos.cn> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" send_forget_request() documents return value 1 as caller should wait; virtio_fs_hiprio_dispatch_work() treats any non-zero return as a signal to stop processing the rest of queued_reqs. When virtqueue_add_outbuf() fails with a non-recoverable error we kfree the forget but left ret negative, so the worker returned early and stranded subsequent queued FORGETs. Return 0 after dropping so the queue keeps draining. Signed-off-by: Li Wang --- fs/fuse/virtio_fs.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/fuse/virtio_fs.c b/fs/fuse/virtio_fs.c index 7e4c3fa6ab57..e5d3d58a760c 100644 --- a/fs/fuse/virtio_fs.c +++ b/fs/fuse/virtio_fs.c @@ -652,6 +652,12 @@ static int send_forget_request(struct virtio_fs_vq *fs= vq, kfree(forget); if (in_flight) dec_in_flight_req(fsvq); + /* + * send_forget_request() returns 1 to mean "stop draining + * queued_reqs for now". A negative value is also non-zero + * and would stall the worker after one dropped forget. + */ + ret =3D 0; } goto out; } --=20 2.34.1