Re: VFS?VM - mmap/write deadlock

Linus Torvalds (torvalds@transmeta.com)
20 Dec 1999 19:23:53 -0800

In article <14430.57171.555030.958940@dukat.scot.redhat.com>,
Stephen C. Tweedie <sct@redhat.com> wrote:
>
>I've just been talking with Ben LaHaise about this, and a complete fix
>really will need to ensure that the semaphore taken out by write_page()
>against truncates happening during the write-back _has_ to be compatible
>with any locks taken inside the generic write path.

Quite frankly, any fix for this is probably going to be more unstable
than just waiting for 2.4.x which has all of this fixed by virtue of
just doing the memory mapping right. I don't think it's very productive
playing with the innards of 2.2.x that much: the whole point of 2.2.x is
to NOT do major changes, and fixing the deadlock on inode->i_sem _is_ a
major change.

Linus

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