a problem with dget

[Nir Tzachar <tzachar@cs.bgu.ac.il>]

hello all.

i encountered a strange problem, involving the reference count of
dentries.

first, let me describe my file system (i'll be brief.. ):
im implementing a file system which is supposed to emulate an object
storage device. i use a wrapper like file system (much like wrapfs,
and actually based on it) to store files on an underlying f/s as objects.

i hope someone can help me, i've been tackling this problem for more than
a week: when i create a file(say "tmp"), all is fine.
the problem arises when i umount and then remount the file system.
after im done with lookup (inode->i_op->lookup), dentry->d_count.counter
==1, as should be. but, when i enter the unlink function
(inode->i_op->unlink ) its dentry->d_count.counter == 0 . why is that?
nowhere in the vfs code does anyone decreases the counter b4
inode->i_op->unlink is called . am i right?

the problem happens every time i try to do a dget an any dentry.

anyway, im sure the problem is in my code, but maybe someone has a hunch
which could help.

thank you all.


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nir.