[uml-devel] tail -f is triggers a bug of hostfs on fstat64

[uml-devel] tail -f is triggers a bug of hostfs on fstat64

[BlaisorBlade]

tail -f on UML doesn't succeed in following a file on hostfs. With strace, I 
could see that while normally tail -f does an fstat64 every second to the 
file, and checks things when it reports different datas, on hostfs the 
fstat64 always returns the same file size and probably the same attributes.
I've seen this on 2.4.22-5um.

I think this is difficult since the VFS caches dentries and inodes, and the 
change doesn't go through the VFS, but NFS exists and has probably already 
faced such issues, so it could lead to solution.

Bye
-- 
cat <<EOSIGN
Paolo Giarrusso, aka Blaisorblade
Linux Kernel 2.4.21/2.6.0-test on an i686; Linux registered user n. 292729
EOSIGN



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