在 2025/9/11 18:53, Greg KH 写道:
On Thu, Sep 11, 2025 at 11:22:57AM +0800, yangerkun wrote:Hello, In stable version 6.6, IO operations for CIFS cause system memory leaks shortly after starting; our test case triggers this issue, and other users have reported it as well [1]. This problem does not occur in the mainline kernel after commit 3ee1a1fc3981 ("cifs: Cut over to using netfslib") (v6.10-rc1), but backporting this fix to stable versions 6.6 through 6.9 is challenging. Therefore, I have decided to address the issue with a separate patch. Hi Greg, I have reviewed [2] to understand the process for submitting patches to stable branches. However, this patch may not fit their criteria since it is not a backport from mainline. Is there anything else I should do to make this patch appear more formal?Yes, please include the info as to why this is not a backport from upstream, and why it can only go into this one specific tree and get the developers involved to agree with this.
Alright, the reason I favor this single patch is that the mainline solution involves a major refactor [1] to change the I/O path to netfslib. Backporting it would cause many conflicts, and such a large patch set would introduce numerous KABI changes. Therefore, this single patch is provided here instead...
[1]. https://lore.kernel.org/all/20240328165845.2782259-1-dhowells@xxxxxxxxxx/
But why not submit the upstream changes instead? That should be much simpler and is always preferred as that way the code can be maintained easier over time. Whenever we have these one-off changes, they are almost always wrong and incur additional development efforts for future changes in the same area. So please, do the backports first. thanks, greg k-h
