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From: Pankaj Suryawanshi <suryawanshipankaj@yahoo.com>
To: kernelnewbies@kernelnewbies.org
Subject: CMA allocation failure
Date: Thu, 07 Mar 2019 17:14:16 +0530
Message-ID: <639e30da-1332-4649-92c6-4efff1b12c8d@email.android.com> (raw)

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<div dir='auto'><div dir="auto" style=""><div dir="auto" style=""><font face="sans-serif"><span style="font-size: 12.8px;">Hello,</span></font></div><div dir="auto" style=""><font face="sans-serif"><span style="font-size: 12.8px;"><br></span></font></div><div dir="auto" style=""><font face="sans-serif"><span style="font-size: 12.8px;">I am facing issue related to CMA allocation failure of large size buffer.</span></font></div><div dir="auto" style=""><font face="sans-serif"><span style="font-size: 12.8px;"><br></span></font></div><div dir="auto" style=""><font face="sans-serif"><span style="font-size: 12.8px;">I am beginner in Linux memory management. So I need your help to debug the issue,&nbsp;</span></font></div><div dir="auto" style=""><font face="sans-serif"><span style="font-size: 12.8px;"><br></span></font></div><div dir="auto" style=""><font face="sans-serif"><span style="font-size: 12.8px;">I have below questions&nbsp;</span></font></div><div dir="auto" style=""><font face="sans-serif"><span style="font-size: 12.8px;"><br></span></font></div><div dir="auto" style=""><font face="sans-serif"><span style="font-size: 12.8px;">1. Why migration failed ?</span></font></div><div dir="auto" style=""><font face="sans-serif"><span style="font-size: 12.8px;">2. Who pinned the pages/Which process have pinned the pages ? How to identify that.</span></font></div><div dir="auto" style=""><font face="sans-serif"><span style="font-size: 12.8px;">3. How to migrate pages forcefully so failure will avoid.(not preferable approach)</span></font></div><div dir="auto" style=""><font face="sans-serif"><span style="font-size: 12.8px;">etc.</span></font></div><div dir="auto" style=""><font face="sans-serif"><span style="font-size: 12.8px;"><br></span></font></div><div dir="auto" style=""><font face="sans-serif"><span style="font-size: 12.8px;">Any help would be appreciated.</span></font></div><div dir="auto" style=""><font face="sans-serif"><span style="font-size: 12.8px;"><br></span></font></div><div dir="auto" style=""><font face="sans-serif"><span style="font-size: 12.8px;">Please let me know if you require further information.</span></font></div><div dir="auto" style=""><font face="sans-serif"><span style="font-size: 12.8px;"><br></span></font></div><div dir="auto" style=""><font face="sans-serif"><span style="font-size: 12.8px;">Regards,</span></font></div><div dir="auto" style=""><font face="sans-serif"><span style="font-size: 12.8px;">Pankaj</span></font></div></div></div>

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