On Tue, Nov 16, 2010 at 09:05:05AM -0600, wkendall@xxxxxxx wrote: > In order to resolve a pathname, xfsrestore must work from an inode > number (from the dump) and recurse up the directory entry tree that it > has constructed. Each level of recursion requires a seek and read to > get the name of the dirent, and possibly a mmap of a section of the > directory entry tree if it is not already mapped (and in that case, > possibly a munmap of another section). It's quite common to resolve > pathnames in the same directory consecutively, so simply caching the > parent directory pathname from the previous lookup saves quite a bit > of overhead. > > Signed-off-by: Bill Kendall <wkendall@xxxxxxx> > > Reviewed-by: Alex Elder <aelder@xxxxxxx> Looks good, Reviewed-by: Christoph Hellwig <hch@xxxxxx> _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
