Re: [PATCH 3/4] Do not allow umounting of frozen filesystems

[Eric Sandeen]

Al Viro wrote:
...

> IOW, I'd rather add two new ioctls (check if frozen/thaw), both by
> bdev.  On top of the first two patches in this set.

> Comments?

The check ioctls would be very very useful, IMHO.  Many filesystem tools
refuse to operate on a mounted filesystem, but in some cases it'd be
safe to do readonly operations on a frozen, mounted fs.

-Eric
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