RE: [PATCH] fs: prefer read_iter over read and write_iter over write

[David Laight]

From: Jason A. Donenfeld
> Sent: 20 May 2022 14:51
> 
> Most kernel code prefers read_iter over read and write_iter over write,
> yet the read function pointer is tested first. Reverse these so that the
> iter function is always used first.

There will be a measurable performance hit for the xxx_iter versions.

	David

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