Hi,
In a sub-thread of "Floppy handling", there was the idea that
removing/swaping removable media wasn't a bad thing as long as
- no metadata is cached by the filesystem
- disk change events invalidate all buffers associated with that device
- the user doesn't remove the media while there is I/O in progress.
Items 2 and 3 can be considered given. What is interesting is the current
status on 1. How much data is cached by the various filesystems and not
properly invalidated on a disk change? Would it make sense to add a
"expect disk changes" mount option?
Another thing rms pointed out was the issue of open files and pending
mmap()s. Is there a standards-compliant way to revoke file handles and
mmap()s? (Keep in mind glibc implements fopen() via mmap()) Would it be an
option to invent a new signal for that (default behaviour: kill app)?
Simon
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This archive was generated by hypermail 2b29 : Fri Jun 23 2000 - 21:00:15 EST