file blocks and file extents
Checking inode-cache statistics
To see statistics about the inode-cache:
$ cat /proc/sys/fs/inode-state 68034 21738 0 0 0 0 0
Entries are as follows:
nr_inodes - number of allocated inodes in the cache.
nr_free_inodes - number of unused (=free) entries in the cache.
preshrink - nonzero when the number of allocated inodes is larger than inode-max (TODO - missing on Ubuntu 10.04?) - implying the system needs to clear inode cache entries.
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