Andreas Dilger wrote: > On Aug 03, 2008 21:43 +0300, Adrian Bunk wrote: >> Assume you have: >> - one or more of ext2/3/4 statically built into your kernel >> - none of these with extended attributes enabled and >> - want to add onother one of ext2/3/4 modular and with >> extended attributes enabled >> >> then you currently have to reboot to use it since this results in >> CONFIG_FS_MBCACHE=y. >> >> That's not a common issue, but I just ran into it and since there's no >> reason to get a built-in mbcache in this case this patch fixes it. > > To be honest, I'd like an option to disable MBCACHE entirely. This > code is of no use if the EAs on an inode are not identical (i.e. if > anything other than ACLs are in use) or selinux.... > and is also not useful if the > xattrs fit into the large inodes in ext4 (and ext3 if the filesystem > is formatted with this option). ... which is now the default. a config option sounds reasonable to me, too. I think by the time EAs spill out of the inode, the chance of them being identical is pretty small? (i.e. a single acl set, or selinux context may be common, but if you have enough to not fit in the inode it's more likely to be a mishmash of things?) -Eric > Cheers, Andreas > -- > Andreas Dilger > Sr. Staff Engineer, Lustre Group > Sun Microsystems of Canada, Inc. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
