Re: [PATCH v2 0/4] iov_iter: Adjust styling/location of new splice functions

[Jens Axboe]

On 2/13/23 8:32 AM, David Howells wrote:
> Hi Jens, Al, Christoph,
> 
> Here are patches to make some changes that Christoph requested[1] to the
> new generic file splice functions that I implemented[2].  Apart from one
> functional change, they just altering the styling and move one of the
> functions to a different file:
> 
>  (1) Rename the main functions:
> 
> 	generic_file_buffered_splice_read() -> filemap_splice_read()
> 	generic_file_direct_splice_read()   -> direct_splice_read()
> 
>  (2) Abstract out the calculation of the location of the head pipe buffer
>      into a helper function in linux/pipe_fs_i.h.
> 
>  (3) Use init_sync_kiocb() in filemap_splice_read().
> 
>      This is where the functional change is.  Some kiocb fields are then
>      filled in where they were set to 0 before, including setting ki_flags
>      from f_iocb_flags.  I've filtered out IOCB_NOWAIT as the function is
>      supposed to be synchronous.
> 
>  (4) Move filemap_splice_read() to mm/filemap.c.  filemap_get_pages() can
>      then be made static again.
> 
> I've pushed the patches here also:
> 
> 	https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/log/?h=iov-extract-3
> 
> I've also updated worked the changes into the commits on my iov-extract
> branch if that would be preferable, though that means Jens would need to
> update his for-6.3/iov-extract again.

Honestly, it's getting tight on timing at this point, and there's also
a crash report from today:

https://lore.kernel.org/linux-block/Y+pdHFFTk1TTEBsO@xxxxxxxxxxxxxx/

I think we'd be better off folding in this series and then potentially
pushing this series to 6.4 rather than 6.3.

-- 
Jens Axboe