* Re: [PATCH v3] f2fs: do not support mmap write for large folio
[not found] ` <adaasm42rLxRY2GN@google.com>
@ 2026-04-09 5:40 ` Christoph Hellwig
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From: Christoph Hellwig @ 2026-04-09 5:40 UTC (permalink / raw)
To: Jaegeuk Kim; +Cc: linux-kernel, linux-f2fs-devel, linux-fsdevel, linux-mm
[adding back fsdevel and mm to the discussion]
On Wed, Apr 08, 2026 at 06:13:06PM +0000, Jaegeuk Kim wrote:
> Let's check mmap writes onto the large folio, since we don't support writing
> large folios.
What does this fix? As state in the previous round of discussion f2fs
only support large folios for immutable files, how do you get ->mkwrite
called for them.
The only way I can think of that is when clearing the immutable flag,
but simply rejecting writes with SIGBUS after that seems like it's
breaking the expected API, and I don't see handling for normal writes
after that either.
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[not found] ` <adaasm42rLxRY2GN@google.com>
2026-04-09 5:40 ` [PATCH v3] f2fs: do not support mmap write for large folio Christoph Hellwig
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