Re: [PATCH 2/8] fs: factor inode disposal

From: Al Viro
Date: Fri Oct 29 2010 - 00:45:58 EST


On Fri, Oct 29, 2010 at 02:23:34PM +1100, Dave Chinner wrote:
> /*
> - * Move the inode off the IO lists and LRU once I_FREEING is
> - * set so that it won't get moved back on there if it is dirty.
> + * Move the inode off the LRU once I_FREEING is set so that it
> + * won't get moved back on.
> */
> list_move(&inode->i_lru, &dispose);
> - list_del_init(&inode->i_wb_list);

a) OK, so you've killed that list_del_init(). Good.
b) The comment is completely misleading. We don't put I_FREEING inodes back on
LRU (or IO) lists, no matter where we find them. What's happening here is
that we are collecting inodes to evict, period.

> - * Move the inode off the IO lists and LRU once I_FREEING is
> - * set so that it won't get moved back on there if it is dirty.
> + * Move the inode off the LRU once I_FREEING is
> + * set so that it won't get moved back on.

Ditto.

> /*
> - * Move the inode off the IO lists and LRU once I_FREEING is
> - * set so that it won't get moved back on there if it is dirty.
> + * Move the inode off the LRU once I_FREEING is
> + * set so that it won't get moved back on.
> */
Ditto.
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