Re: Update of file offset on write() etc. is non-atomic with I/O

[Al Viro]

On Mon, Mar 03, 2014 at 03:23:55PM -0800, Linus Torvalds wrote:

> This just uses a "flags" field, and we currently only have two bits
> that we use: FDPUT_FPUT and FDPUT_POS_UNLOCK. The first patch knows
> that "fget_light()" writes 0/1 for that, which is the same as the
> FDPUT_FPUT bit. I didn't bother to comment on it or clean it up, since
> the second patch just removes that whole fget_light() mess.
> 
> Comments?

do_sendfile() is also there and this one is even more unpleasant ;-/
We probably can ignore that one (until POSIX learns of its existence),
thouhg...
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