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Thu, 11 Jun 2020 10:01:13 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=dbaedf251592; t=1591884024; bh=c56enI6I5/M+hosAuiztGDVYwFDAzlVT7WCsV6L+sCM=; h=X-UI-Sender-Class:To:Cc:Subject:From:Date; b=BUdJwfEuIkaQ8DPsgKs9ftqAyxuXKhaAl/lLPssQsAkXsW41iqv1S01P2GbE+mc45 y6+u7jtcGqK7AMvaWFqLzVfYll4Mewvp4CRvmxHr85LOPmrRw/RdZw2AyAHYRHyXo3 nM/WVcoyssFeavKepyaV97LgRpK9tTs+iP8WDYbw= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Received: from [192.168.1.2] ([78.49.66.14]) by smtp.web.de (mrweb103 [213.165.67.124]) with ESMTPSA (Nemesis) id 0M5wzV-1izdmw2dU9-00xwKu; Thu, 11 Jun 2020 16:00:23 +0200 To: Liao Pingfang , linux-btrfs@vger.kernel.org Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org, Chris Mason , David Sterba , Josef Bacik , Wang Liang , Xue Zhihong , Yi Wang Subject: Re: [PATCH v2] btrfs: Remove error messages for failed memory allocations From: Markus Elfring Autocrypt: addr=Markus.Elfring@web.de; prefer-encrypt=mutual; keydata= mQINBFg2+xABEADBJW2hoUoFXVFWTeKbqqif8VjszdMkriilx90WB5c0ddWQX14h6w5bT/A8 +v43YoGpDNyhgA0w9CEhuwfZrE91GocMtjLO67TAc2i2nxMc/FJRDI0OemO4VJ9RwID6ltwt mpVJgXGKkNJ1ey+QOXouzlErVvE2fRh+KXXN1Q7fSmTJlAW9XJYHS3BDHb0uRpymRSX3O+E2 lA87C7R8qAigPDZi6Z7UmwIA83ZMKXQ5stA0lhPyYgQcM7fh7V4ZYhnR0I5/qkUoxKpqaYLp YHBczVP+Zx/zHOM0KQphOMbU7X3c1pmMruoe6ti9uZzqZSLsF+NKXFEPBS665tQr66HJvZvY GMDlntZFAZ6xQvCC1r3MGoxEC1tuEa24vPCC9RZ9wk2sY5Csbva0WwYv3WKRZZBv8eIhGMxs rcpeGShRFyZ/0BYO53wZAPV1pEhGLLxd8eLN/nEWjJE0ejakPC1H/mt5F+yQBJAzz9JzbToU 5jKLu0SugNI18MspJut8AiA1M44CIWrNHXvWsQ+nnBKHDHHYZu7MoXlOmB32ndsfPthR3GSv jN7YD4Ad724H8fhRijmC1+RpuSce7w2JLj5cYj4MlccmNb8YUxsE8brY2WkXQYS8Ivse39MX BE66MQN0r5DQ6oqgoJ4gHIVBUv/ZwgcmUNS5gQkNCFA0dWXznQARAQABtCZNYXJrdXMgRWxm cmluZyA8TWFya3VzLkVsZnJpbmdAd2ViLmRlPokCVAQTAQgAPhYhBHDP0hzibeXjwQ/ITuU9 Figxg9azBQJYNvsQAhsjBQkJZgGABQsJCAcCBhUICQoLAgQWAgMBAh4BAheAAAoJEOU9Figx g9azcyMP/iVihZkZ4VyH3/wlV3nRiXvSreqg+pGPI3c8J6DjP9zvz7QHN35zWM++1yNek7Ar OVXwuKBo18ASlYzZPTFJZwQQdkZSV+atwIzG3US50ZZ4p7VyUuDuQQVVqFlaf6qZOkwHSnk+ CeGxlDz1POSHY17VbJG2CzPuqMfgBtqIU1dODFLpFq4oIAwEOG6fxRa59qbsTLXxyw+PzRaR LIjVOit28raM83Efk07JKow8URb4u1n7k9RGAcnsM5/WMLRbDYjWTx0lJ2WO9zYwPgRykhn2 sOyJVXk9xVESGTwEPbTtfHM+4x0n0gC6GzfTMvwvZ9G6xoM0S4/+lgbaaa9t5tT/PrsvJiob kfqDrPbmSwr2G5mHnSM9M7B+w8odjmQFOwAjfcxoVIHxC4Cl/GAAKsX3KNKTspCHR0Yag78w i8duH/eEd4tB8twcqCi3aCgWoIrhjNS0myusmuA89kAWFFW5z26qNCOefovCx8drdMXQfMYv g5lRk821ZCNBosfRUvcMXoY6lTwHLIDrEfkJQtjxfdTlWQdwr0mM5ye7vd83AManSQwutgpI q+wE8CNY2VN9xAlE7OhcmWXlnAw3MJLW863SXdGlnkA3N+U4BoKQSIToGuXARQ14IMNvfeKX NphLPpUUnUNdfxAHu/S3tPTc/E/oePbHo794dnEm57LuuQINBFg2+xABEADZg/T+4o5qj4cw nd0G5pFy7ACxk28mSrLuva9tyzqPgRZ2bdPiwNXJUvBg1es2u81urekeUvGvnERB/TKekp25 4wU3I2lEhIXj5NVdLc6eU5czZQs4YEZbu1U5iqhhZmKhlLrhLlZv2whLOXRlLwi4jAzXIZAu 76mT813jbczl2dwxFxcT8XRzk9+dwzNTdOg75683uinMgskiiul+dzd6sumdOhRZR7YBT+xC wzfykOgBKnzfFscMwKR0iuHNB+VdEnZw80XGZi4N1ku81DHxmo2HG3icg7CwO1ih2jx8ik0r riIyMhJrTXgR1hF6kQnX7p2mXe6K0s8tQFK0ZZmYpZuGYYsV05OvU8yqrRVL/GYvy4Xgplm3 DuMuC7/A9/BfmxZVEPAS1gW6QQ8vSO4zf60zREKoSNYeiv+tURM2KOEj8tCMZN3k3sNASfoG fMvTvOjT0yzMbJsI1jwLwy5uA2JVdSLoWzBD8awZ2X/eCU9YDZeGuWmxzIHvkuMj8FfX8cK/ 2m437UA877eqmcgiEy/3B7XeHUipOL83gjfq4ETzVmxVswkVvZvR6j2blQVr+MhCZPq83Ota xNB7QptPxJuNRZ49gtT6uQkyGI+2daXqkj/Mot5tKxNKtM1Vbr/3b+AEMA7qLz7QjhgGJcie qp4b0gELjY1Oe9dBAXMiDwARAQABiQI8BBgBCAAmFiEEcM/SHOJt5ePBD8hO5T0WKDGD1rMF Alg2+xACGwwFCQlmAYAACgkQ5T0WKDGD1rOYSw/+P6fYSZjTJDAl9XNfXRjRRyJSfaw6N1pA Ahuu0MIa3djFRuFCrAHUaaFZf5V2iW5xhGnrhDwE1Ksf7tlstSne/G0a+Ef7vhUyeTn6U/0m +/BrsCsBUXhqeNuraGUtaleatQijXfuemUwgB+mE3B0SobE601XLo6MYIhPh8MG32MKO5kOY hB5jzyor7WoN3ETVNQoGgMzPVWIRElwpcXr+yGoTLAOpG7nkAUBBj9n9TPpSdt/npfok9ZfL /Q+ranrxb2Cy4tvOPxeVfR58XveX85ICrW9VHPVq9sJf/a24bMm6+qEg1V/G7u/AM3fM8U2m tdrTqOrfxklZ7beppGKzC1/WLrcr072vrdiN0icyOHQlfWmaPv0pUnW3AwtiMYngT96BevfA qlwaymjPTvH+cTXScnbydfOQW8220JQwykUe+sHRZfAF5TS2YCkQvsyf7vIpSqo/ttDk4+xc Z/wsLiWTgKlih2QYULvW61XU+mWsK8+ZlYUrRMpkauN4CJ5yTpvp+Orcz5KixHQmc5tbkLWf x0n1QFc1xxJhbzN+r9djSGGN/5IBDfUqSANC8cWzHpWaHmSuU3JSAMB/N+yQjIad2ztTckZY pwT6oxng29LzZspTYUEzMz3wK2jQHw+U66qBFk8whA7B2uAU1QdGyPgahLYSOa4XAEGb6wbI FEE= Message-ID: <0bbb237b-3223-1efa-cf71-583a4e9ef3ae@web.de> Date: Thu, 11 Jun 2020 16:00:21 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:whnTkPmpFE3lRbBonsjH0mV+/M3G0rnebuRkCq90vQrDLxUUnLq U8HYF1f4e5gSYDAM9e+I8Wi9Cie5TChRsbS/OY3Zl6fc5o584cPjq6O3ulP+zNksXAyctoW se14+30ah7FnujW4tLTGLN+WImnLV79ONtGlzMY28FLXQX66pwEozREHxUdJ6mPR34BRvGK j5Dhy6eH1BnsXUUVp1xbg== X-UI-Out-Filterresults: notjunk:1;V03:K0:yQkQ/uRCtpA=:k69DLVUKjpxdNE5Y5j1RSM 29nHU6dybm6innEmBO5GB4juxl6xc1wH1CjSJW5BXeMz+UHHEVRMMY2l9g+cKcr5n2cmXVbMf rWUJinARcWCj08pRYCC00McSut+q4M7BOWtIzgkhzxIjfSgnpWhgdpTw/q7W+lzommAUVSbKW 6bXcDeSO+u8iwGlcMosmFXm2BIISiWDNzc47dcUJAqnkRl6jMR+LsLWrAl1p7fT0bOUE36Lbw 9QKDNcKvUoR9QKo5eo6iSmYUv7FEatkhX8y4WBIeoqfEHfMiShnel/xf5g+l9Z5CMeFThx5dw inON6bdgLS3Let8/gBPdgJKUt0NXXJ+nv9zEvNuc1mZTftooZn5XoCDUgpCszSYOgxMLaIN7S AZU18NngAhk1IzjA4pT5WbFagmAsNHuLz8gOVXwYnDTc8Ome+8/OMU6iBtLVxcTFOhSsdMmwj k2HCLzfkiuijaOEVbT0awUR5dkZXYDwDrfsWTFTP4ovb5QeaNwtkdyaf+vxfbLy1yFCA+zzJC dvMK0QHCWc3uZuapel3nNxGaECqgGhQB8J7UsmWpA+hFflFK95NfHAeps+ZbVgikd0KG6840b bkiKM01HB0pTUjsDX/DPWK5jf9ZyLrHF20Iyd+g/Q5qODCdLCfLXQoJxL5Q/JvDmAYVYF74Qt etS+dj117GLft4JOm++7EchH66GGYlzXd4GWIPdKHR7Ijk3t72yaxN00+yDC4AnBYNb0JfALM XDZjM+wSeTH52scnFt08rZdCewVlL5CzHrAO+K5kWz6ENdW1vG3yuORVM3Pe6ikYlmoAxB5HT 47f2bZ6CLEioxbiPfNJ4Q5LapBrcrdepsXAsHP/BNQ1TuhG9j4v2rjAlxhWtCBjF6/t6fzgqy JZgV/vgOn7Bm187eLU6/5nMaoS2CfxM+4Bg65T4N7lzR5HK2n1vHchLi1CUNm8UeCfaYr+B+N Jufkdi5DpLOniTiDt1VnvjC3n4un7UeZAph5pwVl0SaKc3kPAPCzTDv+szkP20Dvs9w2VSOtz qk/53YE1yS1u4VSj/Mo9i9Ih0F1Im5nIQCf3UFdXfG1IGYCyUH6b8CerCeigugUo/b0kyhgLm OFqcv2cC1z+1CGXErSuaIXe64XfOMFzhAeMx0I+ajbT4YNgpcV+Qj+xavbeA+6X0cFVUFHqaI zv71RjbNg01IamnL5/Jyg4qcxj+LteDwPlicGaoY3bk0r3s8GDjsy4s8BzfVvB1a1g18WDf0w n4H6ggduZof8RMEel Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > As there is a dump_stack() done on memory allocation > failures, these messages might as well be deleted instead. * I imagine that an other wording variant can become clearer for the change description. * I suggest to reconsider the patch subject. =E2=80=A6 > +++ b/fs/btrfs/check-integrity.c > @@ -632,7 +632,6 @@ static int btrfsic_process_superblock(struct btrfsi= c_state *state, > > selected_super =3D kzalloc(sizeof(*selected_super), GFP_NOFS); > if (NULL =3D=3D selected_super) { > - pr_info("btrfsic: error, kmalloc failed!\n"); > return -ENOMEM; > } How do you think about to use the following error handling instead? if (!selected_super) return -ENOMEM; Regards, Markus