tree 51975eb82d8cb8c4cb53755eb2a7740a0be48433
parent 7888da95832d50a87bbfdb9f40620ddc66f94b3c
author David Howells <dhowells@redhat.com> 1514887339 +0000
committer David Howells <dhowells@redhat.com> 1514887339 +0000

afs: Fix unlink

Repeating creation and deletion of a file on an afs mount will run the box
out of memory, e.g.:

	dd if=/dev/zero of=/afs/scratch/m0 bs=$((1024*1024)) count=512
	rm /afs/scratch/m0

The problem seems to be that it's not properly decrementing the nlink count
so that the inode can be scrapped.

Note that this doesn't fix local creation followed by remote deletion.
That's harder to handle and will require a separate patch as we're not told
that the file has been deleted - only that the directory has changed.

Reported-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>