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[83.50.83.154]) by smtp.gmail.com with ESMTPSA id j3sm563161wrb.111.2022.01.24.14.04.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Jan 2022 14:04:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=jCpAbYC9T6HGGGxeJ6RsbykRgxprtZ2L9dWFhM1DvkI=; b=ZRG/7gTbKDEQcoa4qoMuGFIkGHQWUo6ODlAtlD+eH7Kb2ebxfDI1I5A79xLenHqCRi lEPoEBfQDaaKWFOs7AZjDfJbcjbvBCxgTt3TnQKFrNJ4Q0mqAh26x0nWMTVHrNPdYYFC e2OxDLgtP8/8PjRbg/9xTkb91/pm9WRyWojEPuTemqbgS/DErxFFBfpstEkMKePNOnf2 AfGcm2kjcjzng4mtGRvvD7wZf0TDoIWCprkWnB9XAYVAHGtyv1w4+FJ28lWkyXhkZg6O HOZYOqwPmGQunDhvk00dJLTCtdpft81rQm+tUtbrrSQMSl6eC8Gy9nO9Hgda1vkordNY 6yYQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-transfer-encoding; bh=jCpAbYC9T6HGGGxeJ6RsbykRgxprtZ2L9dWFhM1DvkI=; b=KkDiss9WxGyhd29Cb/n/R/CW4ZpsGRKh0f+o9HZWVafWIBqxpLbUkLW46wvJjD9lsS 0e6aMao+983KJ2QnZS3fs9+L1ucd9bd8mYktVukUiZSy1m5hWEF1XMPFPoZ+cb9zkfed hLtGyr5su0KGK7qTORHiOOZoSJUQ/ScjmLK4ndV1Pbw34AB+NDYJpb06XowQciVhcw4Q lnKvW/cgajKQyfmFMT7DWzFnEP4ul7oV0ZmDF2/mzefVpeh46yEQD8JSVlZ0qTTeusCD YwufIyEGs9wtZV0iadhXaIGc5ac0OLgG8FuJ+Yqqdjj9SGhxoeuYkwQYIhVNwuPwuGpp NPOw== X-Gm-Message-State: AOAM530i+ChYdrB8H+UdDZF58x3t+M39WdedAVLsrPKqTGH4GbSsXRs/ 9G2ngWMTAxBx3SgtZSa8FzrIlrPMGq0= X-Google-Smtp-Source: ABdhPJyWrY27BXp2jjCW7SuvOQus5YVR8Z3lHKN6oGuHYajf4VyyuMk5+OqtkXOu1a+Alda1A9MYOA== X-Received: by 2002:a05:600c:3b9c:: with SMTP id n28mr256473wms.128.1643061844950; Mon, 24 Jan 2022 14:04:04 -0800 (PST) Sender: =?UTF-8?Q?Philippe_Mathieu=2DDaud=C3=A9?= From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: qemu-block@nongnu.org, Li-Wen Hsu , Ed Maste , Kyle Evans , Fabrice Fontaine , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PATCH v2 1/3] block/export/fuse: Extract fuse_fallocate_punch_hole() Date: Mon, 24 Jan 2022 23:03:55 +0100 Message-Id: <20220124220357.74017-2-f4bug@amsat.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220124220357.74017-1-f4bug@amsat.org> References: <20220124220357.74017-1-f4bug@amsat.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1643061849016100001 Extract fuse_fallocate_punch_hole() to avoid #ifdef'ry mixed within if/else statement. Signed-off-by: Philippe Mathieu-Daud=C3=A9 --- block/export/fuse.c | 59 +++++++++++++++++++++++++++------------------ 1 file changed, 35 insertions(+), 24 deletions(-) diff --git a/block/export/fuse.c b/block/export/fuse.c index 6710d8aed86..31cb0503adc 100644 --- a/block/export/fuse.c +++ b/block/export/fuse.c @@ -603,6 +603,38 @@ static void fuse_write(fuse_req_t req, fuse_ino_t inod= e, const char *buf, } } =20 +static bool fuse_fallocate_zero_range(fuse_req_t req, fuse_ino_t inode, + int mode, int64_t blk_len, + off_t offset, off_t *length) +{ +#ifdef CONFIG_FALLOCATE_ZERO_RANGE + FuseExport *exp =3D fuse_req_userdata(req); + + if (mode & FALLOC_FL_ZERO_RANGE) { + int ret; + + if (!(mode & FALLOC_FL_KEEP_SIZE) && offset + *length > blk_len) { + /* No need for zeroes, we are going to write them ourselves */ + ret =3D fuse_do_truncate(exp, offset + *length, false, + PREALLOC_MODE_OFF); + if (ret < 0) { + fuse_reply_err(req, -ret); + return false; + } + } + + do { + int size =3D MIN(*length, BDRV_REQUEST_MAX_BYTES); + + ret =3D blk_pwrite_zeroes(exp->common.blk, offset, size, 0); + offset +=3D size; + *length -=3D size; + } while (ret =3D=3D 0 && *length > 0); + } +#endif /* CONFIG_FALLOCATE_ZERO_RANGE */ + return true; +} + /** * Let clients perform various fallocate() operations. */ @@ -642,30 +674,9 @@ static void fuse_fallocate(fuse_req_t req, fuse_ino_t = inode, int mode, offset +=3D size; length -=3D size; } while (ret =3D=3D 0 && length > 0); - } -#ifdef CONFIG_FALLOCATE_ZERO_RANGE - else if (mode & FALLOC_FL_ZERO_RANGE) { - if (!(mode & FALLOC_FL_KEEP_SIZE) && offset + length > blk_len) { - /* No need for zeroes, we are going to write them ourselves */ - ret =3D fuse_do_truncate(exp, offset + length, false, - PREALLOC_MODE_OFF); - if (ret < 0) { - fuse_reply_err(req, -ret); - return; - } - } - - do { - int size =3D MIN(length, BDRV_REQUEST_MAX_BYTES); - - ret =3D blk_pwrite_zeroes(exp->common.blk, - offset, size, 0); - offset +=3D size; - length -=3D size; - } while (ret =3D=3D 0 && length > 0); - } -#endif /* CONFIG_FALLOCATE_ZERO_RANGE */ - else if (!mode) { + } else if (!fuse_fallocate_zero_range(req, inode, blk_len, mode, offse= t, &length)) { + return; + } else if (!mode) { /* We can only fallocate at the EOF with a truncate */ if (offset < blk_len) { fuse_reply_err(req, EOPNOTSUPP); --=20 2.34.1