Messages in this thread | | | Date | Tue, 26 Nov 2013 11:20:53 +0100 | From | Peter Zijlstra <> | Subject | Re: [patch 6/9] mm + fs: store shadow entries in page cache |
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On Tue, Nov 26, 2013 at 10:17:16AM +1100, Dave Chinner wrote: > void truncate_inode_pages_final(struct address_space *mapping) > { > mapping_set_exiting(mapping); > if (inode->i_data.nrpages || inode->i_data.nrshadows) { > /* > * spinlock barrier to ensure all modifications are > * complete before we do the final truncate > */ > spin_lock_irq(&mapping->tree_lock); > spin_unlock_irq(&mapping->tree_lock);
spin_unlock_wait() ?
Its cheaper, but prone to starvation; its typically useful when you're waiting for the last owner to go away and know there won't be any new ones around.
> truncate_inode_pages_range(mapping, 0, (loff_t)-1); > }
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