From: Tao Ma Date: Mon, 18 Aug 2008 09:38:50 +0000 (+0800) Subject: ocfs2: Add xattr bucket iteration for large numbers of EAs X-Git-Tag: v2.6.28-rc1~572^2~41 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0c044f0b24b9128ba8c297149d88bd81f2e36af3;p=pandora-kernel.git ocfs2: Add xattr bucket iteration for large numbers of EAs Ocfs2 breaks up xattr index tree leaves into 4k regions, called buckets. Attributes are stored within a given bucket, depending on hash value. After a discussion with Mark, we decided that the per-bucket index (xe_entry[]) would only exist in the 1st block of a bucket. Likewise, name/value pairs will not straddle more than one block. This allows the majority of operations to work directly on the buffer heads in a leaf block. This patch adds code to iterate the buckets in an EA. A new abstration of ocfs2_xattr_bucket is added. It records the bhs in this bucket and ocfs2_xattr_header. This keeps the code neat, improving readibility. Signed-off-by: Tao Ma Signed-off-by: Mark Fasheh --- Reading git-diff-tree failed