Messages in this thread |  | | Date | Sun, 19 Jan 1997 10:37:29 -0500 (EST) | From | Ion Badulescu <> | Subject | Re: Does linux locks swap file? |
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On Sun, 19 Jan 1997, Boris Tobotras wrote:
> If I've understood sys_swapon() correctly, there is no increment > of inode's usage counter if swapping goes to regular file. If this > assumption is correct, it is definitely a bug. If it is wrong, please > tell me why :)
No, sys_swapon is fine, because namei() increments the inode's i_count.
> This was inspired by report of someone who was able to crash > system just by removing active swap file.
Hmm... strange. I'm unable to replicate this behavior, and the space used by the swapfile does _not_ get deallocated when the file is unlinked. However, there is a (small) problem here: since the swapoff procedure is filename-based and there is no way to reference an unlinked file by filename, you can't swapoff that file.
Correcting this problem implies changing the parameters for sys_swapoff, which I definitely don't want to do.
Ionut
-- It is better to keep your mouth shut and be thought a fool, than to open it and remove all doubt.
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