On 7/5/22 9:21 PM, David Howells wrote:
Jeff Layton <jlayton@xxxxxxxxxx> wrote:
I don't know here... I think it might be better to just expect that when
this function returns an error that the folio has already been unlocked.
Doing it this way will mean that you will lock and unlock the folio a
second time for no reason.
I seem to remember there was some reason you wanted the folio unlocking and
putting. I guess you need to drop the ref to flush it.
Would it make sense for ->check_write_begin() to be passed a "struct folio
**folio" rather than "struct folio *folio" and then the filesystem can clear
*folio if it disposes of the page?
Yeah, this also sounds good to me.
-- Xiubo
David
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