On 21 Nov 2022, at 17:32, Shuah Khan wrote:

On 11/21/22 15:01, Benjamin Coddington wrote:

quoted

On 21 Nov 2022, at 16:43, Shuah Khan wrote:

quoted

On 11/21/22 14:40, Shuah Khan wrote:

quoted

On 11/21/22 07:34, Benjamin Coddington wrote:

quoted

On 21 Nov 2022, at 8:56, David Howells wrote:

quoted

Benjamin Coddington [off-list ref] wrote:

quoted

Since moving to memalloc_nofs_save/restore, SUNRPC has stopped setting the
GFP_NOIO flag on sk_allocation which the networking system uses to decide
when it is safe to use current->task_frag.

Um, what's task_frag?

Its a per-task page_frag used to coalesce small writes for networking -- see:

5640f7685831 net: use a per task frag allocator

Ben

I am not seeing this in the mainline. Where can find this commit?

Okay. I see this commit in the mainline. However, I don't see the
sk_use_task_frag in mainline.

sk_use_task_frag is in patch 1/3 in this posting.

https://lore.kernel.org/netdev/26d98c8f-372b-b9c8-c29f-096cddaff149@linuxfoundation.org/T/#m3271959c4cf8dcff1c0c6ba023b2b3821d9e7e99 (local)

Aha. I don't have 1/3 in my Inbox - I think it would make
sense to cc people on the first patch so we can understand
the premise for the change.

Yeah, I can do that if it goes to another version, I was just trying to be
considerate of all the noise this sort of posting generates.

Ben