https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 https://jira.whamcloud.com/browse/LU-16761 Lustre <p>It would better to cache the unaligned page in kernel page cache to avoid the subsequent writes on the same page which may trigger the expensive Read-Modify-Write (RMW).<br/> And when prepare write, if the page is mapping-ed and uptodate, it can avoid read it before write even it is not page-aligned.</p> LU-16761

osd-ldiskfs: cache unaligned page to avoid RMW

Improvement Minor Open Unresolved Qian Yingjin Qian Yingjin Sun, 23 Apr 2023 08:12:55 +0000 Thu, 27 Apr 2023 14:38:13 +0000 0 4 <p>"Qian Yingjin &lt;qian@ddn.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/c/fs/lustre-release/+/50717" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/50717</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-16761" title="osd-ldiskfs: cache unaligned page to avoid RMW" class="issue-link" data-issue-key="LU-16761">LU-16761</a> osd-ldiskfs: skip Uptodate page to avoid RMW<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 67b4e69ae414432d17178da129ab0a7f28c4b4b2</p> Related Development Rank 1|i03jjb: Rank (Obsolete) 9223372036854775807