On Mon, 2011-06-06 at 18:42 +0400, Vasily Novikov wrote: > On 06/06/2011 05:43 PM, Eric Paris wrote: > > Well, you are both correct. If you add a mark with only 'ignored' > > events set it will not pin the inode into the kernel. If the system > > starts to get under memory pressure the kernel will kick unused inodes > > and any associated ignored marks out of ram. Inodes with 'real' events > > attached will be pinned in memory and cannot be evicted under memory > > pressure. > > So if we use marks with only 'ignored' events then under memory pressure > mm subsystem will shrink inode cache that will free our marks and > therefore it's safe to use FAN_UNLIMITED_MARKS in this case? > If it really works then we don't need LRU cache in fanotify because it's > already implemented in dentry_cache/inode_cache. That's how it's supposed to work. Just remember, if you set a real event, the inode becomes pinned in core and the mm will be unable to evict either the inode or the mark. -Eric -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
