Re: [RFC] iomap: use huge zero folio in iomap_dio_zero

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Subject: Re: [RFC] iomap: use huge zero folio in iomap_dio_zero
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Thu, 9 May 2024 05:58:23 -0700
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>, hch@xxxxxx, willy@xxxxxxxxxxxxx, mcgrof@xxxxxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx, brauner@xxxxxxxxxx, chandan.babu@xxxxxxxxxx, david@xxxxxxxxxxxxx, djwong@xxxxxxxxxx, gost.dev@xxxxxxxxxxx, hare@xxxxxxx, john.g.garry@xxxxxxxxxx, linux-block@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, linux-xfs@xxxxxxxxxxxxxxx, p.raghav@xxxxxxxxxxx, ritesh.list@xxxxxxxxx, ziy@xxxxxxxxxx
In-reply-to: <20240509125514.2i3a7yo657frjqwq@quentin>
References: <20240503095353.3798063-8-mcgrof@kernel.org> <20240507145811.52987-1-kernel@pankajraghav.com> <ZjpSx7SBvzQI4oRV@infradead.org> <20240508113949.pwyeavrc2rrwsxw2@quentin> <Zjtlep7rySFJFcik@infradead.org> <20240509123107.hhi3lzjcn5svejvk@quentin> <ZjzFv7cKJcwDRbjQ@infradead.org> <20240509125514.2i3a7yo657frjqwq@quentin>

On Thu, May 09, 2024 at 12:55:14PM +0000, Pankaj Raghav (Samsung) wrote:
> We might still fail here during mount. My question is: do we also fail
> the mount if folio_alloc fails?

Yes.  Like any other allocation that fails at mount time.

Follow-Ups:
- Re: [RFC] iomap: use huge zero folio in iomap_dio_zero
  - From: Darrick J. Wong

References:
- [PATCH v5 07/11] iomap: fix iomap_dio_zero() for fs bs > system page size
  - From: Luis Chamberlain
- [RFC] iomap: use huge zero folio in iomap_dio_zero
  - From: Pankaj Raghav (Samsung)
- Re: [RFC] iomap: use huge zero folio in iomap_dio_zero
  - From: Christoph Hellwig
- Re: [RFC] iomap: use huge zero folio in iomap_dio_zero
  - From: Pankaj Raghav (Samsung)
- Re: [RFC] iomap: use huge zero folio in iomap_dio_zero
  - From: Christoph Hellwig
- Re: [RFC] iomap: use huge zero folio in iomap_dio_zero
  - From: Pankaj Raghav (Samsung)
- Re: [RFC] iomap: use huge zero folio in iomap_dio_zero
  - From: Christoph Hellwig
- Re: [RFC] iomap: use huge zero folio in iomap_dio_zero
  - From: Pankaj Raghav (Samsung)

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