From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1dwwwg-0000gR-Lf for barebox@lists.infradead.org; Tue, 26 Sep 2017 20:59:12 +0000 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Tue, 26 Sep 2017 22:58:43 +0200 Message-Id: <20170926205843.5910-3-u.kleine-koenig@pengutronix.de> In-Reply-To: <20170926205843.5910-1-u.kleine-koenig@pengutronix.de> References: <20170926205843.5910-1-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 2/2] state: storage: direct: skip writing meta data if this makes data fit To: barebox@lists.infradead.org V2hlbiBhIGRpcmVjdCBidWNrZXQgaXMgcmVhZCBpdCBoYW5kbGVzIG1pc3NpbmcgbWV0YSBkYXRh IGp1c3QgZmluZSBmb3IKY29tcGF0aWJpbGl0eSByZWFzb25zLiBUaGlzIGFsbG93cyB0byBza2lw IHdyaXRpbmcgbWV0YSBkYXRhIGlmIHRoYXQKbWFrZXMgdGhlIGRhdGEgc21hbGwgZW5vdWdoIHRv IGZpdCBpbiB0aGUgYnVja2V0IHRvIGJlIHdyaXR0ZW4uCgpUaGUgbW90aXZhdGlvbiBmb3IgdGhp cyBjaGFuZ2UgaXMgdGhhdCB0aGUgc3RvcmFnZSBmb3JtYXQgaW4KcHJlLW1haW5saW5lIHN0YXRl IGRpZG4ndCB1c2UgbWV0YSBkYXRhIGFuZCBzb21lIG1hY2hpbmVzIHN0aWxsIGhhdmUgdG8Kc3Rp Y2sgdG8gdGhpcyBmb3JtYXQuIEZvciB0aGVzZSB0aGUgc3RyaWRlIHNpemUgZXhhY3RseSBmaXRz IHRoZSBkYXRhCnNpemUgc3VjaCB0aGF0IHRoZXJlIGlzIG5vIHBsYWNlIGZvciBhZGRpdGlvbmFs IG1ldGEgZGF0YSBhbmQgc28gdGhlCmRhdGEgaXMgd3JpdHRlbiBpbiB0aGUgb2xkIGZvcm1hdC4K ClNpZ25lZC1vZmYtYnk6IFV3ZSBLbGVpbmUtS8O2bmlnIDx1LmtsZWluZS1rb2VuaWdAcGVuZ3V0 cm9uaXguZGU+Ci0tLQogY29tbW9uL3N0YXRlL2JhY2tlbmRfYnVja2V0X2RpcmVjdC5jIHwgMjMg KysrKysrKysrKysrKysrKy0tLS0tLS0KIDEgZmlsZSBjaGFuZ2VkLCAxNiBpbnNlcnRpb25zKCsp LCA3IGRlbGV0aW9ucygtKQoKZGlmZiAtLWdpdCBhL2NvbW1vbi9zdGF0ZS9iYWNrZW5kX2J1Y2tl dF9kaXJlY3QuYyBiL2NvbW1vbi9zdGF0ZS9iYWNrZW5kX2J1Y2tldF9kaXJlY3QuYwppbmRleCA0 NDY1ZWQwZTQxMTUuLjhiZjlhOTQ1NjQzYyAxMDA2NDQKLS0tIGEvY29tbW9uL3N0YXRlL2JhY2tl bmRfYnVja2V0X2RpcmVjdC5jCisrKyBiL2NvbW1vbi9zdGF0ZS9iYWNrZW5kX2J1Y2tldF9kaXJl Y3QuYwpAQCAtMTAyLDggKzEwMiwxNCBAQCBzdGF0aWMgaW50IHN0YXRlX2JhY2tlbmRfYnVja2V0 X2RpcmVjdF93cml0ZShzdHJ1Y3Qgc3RhdGVfYmFja2VuZF9zdG9yYWdlX2J1Y2tldAogCSAgICBn ZXRfYnVja2V0X2RpcmVjdChidWNrZXQpOwogCWludCByZXQ7CiAJc3RydWN0IHN0YXRlX2JhY2tl bmRfc3RvcmFnZV9idWNrZXRfZGlyZWN0X21ldGEgbWV0YTsKKwlpbnQgd3JpdGVfbWV0YSA9IDE7 CiAKLQlpZiAobGVuID4gZGlyZWN0LT5tYXhfc2l6ZSAtIHNpemVvZihtZXRhKSkKKwlpZiAobGVu ID4gZGlyZWN0LT5tYXhfc2l6ZSAtIHNpemVvZihtZXRhKSkgeworCQlkZXZfaW5mbyhkaXJlY3Qt PmRldiwgInNraXAgd3JpdGluZyBtZXRhZGF0YSBiZWNhdXNlIG9mIHNpemUgY29uc3RyYWludHNc biIpOworCQl3cml0ZV9tZXRhID0gMDsKKwl9CisKKwlpZiAobGVuID4gZGlyZWN0LT5tYXhfc2l6 ZSkKIAkJcmV0dXJuIC1FMkJJRzsKIAogCXJldCA9IGxzZWVrKGRpcmVjdC0+ZmQsIGRpcmVjdC0+ b2Zmc2V0LCBTRUVLX1NFVCk7CkBAIC0xMTIsMTIgKzExOCwxNSBAQCBzdGF0aWMgaW50IHN0YXRl X2JhY2tlbmRfYnVja2V0X2RpcmVjdF93cml0ZShzdHJ1Y3Qgc3RhdGVfYmFja2VuZF9zdG9yYWdl X2J1Y2tldAogCQlyZXR1cm4gcmV0OwogCX0KIAotCW1ldGEubWFnaWMgPSBkaXJlY3RfbWFnaWM7 Ci0JbWV0YS53cml0dGVuX2xlbmd0aCA9IGxlbjsKLQlyZXQgPSB3cml0ZV9mdWxsKGRpcmVjdC0+ ZmQsICZtZXRhLCBzaXplb2YobWV0YSkpOwotCWlmIChyZXQgPCAwKSB7Ci0JCWRldl9lcnIoZGly ZWN0LT5kZXYsICJGYWlsZWQgdG8gd3JpdGUgbWV0YWRhdGEgdG8gZmlsZSwgJWRcbiIsIHJldCk7 Ci0JCXJldHVybiByZXQ7CisJaWYgKHdyaXRlX21ldGEpIHsKKwkJbWV0YS5tYWdpYyA9IGRpcmVj dF9tYWdpYzsKKwkJbWV0YS53cml0dGVuX2xlbmd0aCA9IGxlbjsKKwkJcmV0ID0gd3JpdGVfZnVs bChkaXJlY3QtPmZkLCAmbWV0YSwgc2l6ZW9mKG1ldGEpKTsKKwkJaWYgKHJldCA8IDApIHsKKwkJ CWRldl9lcnIoZGlyZWN0LT5kZXYsCisJCQkJIkZhaWxlZCB0byB3cml0ZSBtZXRhZGF0YSB0byBm aWxlLCAlZFxuIiwgcmV0KTsKKwkJCXJldHVybiByZXQ7CisJCX0KIAl9CiAKIAlyZXQgPSB3cml0 ZV9mdWxsKGRpcmVjdC0+ZmQsIGJ1ZiwgbGVuKTsKLS0gCjIuMTEuMAoKCl9fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmJhcmVib3ggbWFpbGluZyBsaXN0CmJh cmVib3hAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWls bWFuL2xpc3RpbmZvL2JhcmVib3gK