Re: [LSF/MM/BPF TOPIC] Replacing TASK_(UN)INTERRUPTIBLE with regions of uninterruptibility

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Miklos Szeredi <miklos@xxxxxxxxxx> wrote:

> Just making inode_lock() interruptible would break everything.

Why?  Obviously, you'd need to check the result of the inode_lock(), which I
didn't put in my very rough example code, but why would taking the lock at the
front of a vfs op like mkdir be a problem?

> For overlayfs it doesn't really make sense, but for network fs and
> fuse I guess it could be interesting.

But overlayfs calls down into other filesystems - and those might be, say,
network filesystems that want to be interruptible.

David





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