From 349e1c0380dbb7f552e4ea61b479c293eb076b3f Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Wed, 11 Mar 2020 10:42:34 -0700 Subject: xfs: introduce fake roots for inode-rooted btrees Create an in-core fake root for inode-rooted btree types so that callers can generate a whole new btree using the upcoming btree bulk load function without making the new tree accessible from the rest of the filesystem. It is up to the individual btree type to provide a function to create a staged cursor (presumably with the appropriate callouts to update the fakeroot) and then commit the staged root back into the filesystem. Signed-off-by: Darrick J. Wong Reviewed-by: Brian Foster --- fs/xfs/xfs_trace.h | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) (limited to 'fs/xfs/xfs_trace.h') diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h index d8c229492973..05db0398f040 100644 --- a/fs/xfs/xfs_trace.h +++ b/fs/xfs/xfs_trace.h @@ -3633,6 +3633,39 @@ TRACE_EVENT(xfs_btree_commit_afakeroot, __entry->agbno) ) +TRACE_EVENT(xfs_btree_commit_ifakeroot, + TP_PROTO(struct xfs_btree_cur *cur), + TP_ARGS(cur), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_btnum_t, btnum) + __field(xfs_agnumber_t, agno) + __field(xfs_agino_t, agino) + __field(unsigned int, levels) + __field(unsigned int, blocks) + __field(int, whichfork) + ), + TP_fast_assign( + __entry->dev = cur->bc_mp->m_super->s_dev; + __entry->btnum = cur->bc_btnum; + __entry->agno = XFS_INO_TO_AGNO(cur->bc_mp, + cur->bc_ino.ip->i_ino); + __entry->agino = XFS_INO_TO_AGINO(cur->bc_mp, + cur->bc_ino.ip->i_ino); + __entry->levels = cur->bc_ino.ifake->if_levels; + __entry->blocks = cur->bc_ino.ifake->if_blocks; + __entry->whichfork = cur->bc_ino.whichfork; + ), + TP_printk("dev %d:%d btree %s ag %u agino %u whichfork %s levels %u blocks %u", + MAJOR(__entry->dev), MINOR(__entry->dev), + __print_symbolic(__entry->btnum, XFS_BTNUM_STRINGS), + __entry->agno, + __entry->agino, + __entry->whichfork == XFS_ATTR_FORK ? "attr" : "data", + __entry->levels, + __entry->blocks) +) + #endif /* _TRACE_XFS_H */ #undef TRACE_INCLUDE_PATH -- cgit v1.2.3-70-g09d2