From: David Chinner Date: Fri, 23 Nov 2007 05:30:23 +0000 (+1100) Subject: [XFS] Fix broken inode cluster setup. X-Git-Tag: v2.6.24-rc5~19^2~3 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=a7430847fcb19297d6db833f35b9c9645c4a6395;p=linux.git [XFS] Fix broken inode cluster setup. The radix tree based inode caches did away with the inode cluster hashes, replacing them with a bunch of masking and gang lookups on the radix tree. This masking got broken when moving the code to per-ag radix trees and indexing by agino # rather than straight inode number. The result is clustered inode writeback does not cluster and things can go extremely slowly when there are lots of inodes to write. Fix it up by comparing the agino # of the inode we just looked up to the index of the cluster we are looking for. Tested-by: Torsten Kaiser SGI-PV: 972915 SGI-Modid: xfs-linux-melb:xfs-kern:30033a Signed-off-by: David Chinner Signed-off-by: Lachlan McIlroy --- diff --git a/fs/xfs/xfs_iget.c b/fs/xfs/xfs_iget.c index 488836e204a3..fb69ef180b27 100644 --- a/fs/xfs/xfs_iget.c +++ b/fs/xfs/xfs_iget.c @@ -267,7 +267,7 @@ xfs_iget_core( icl = NULL; if (radix_tree_gang_lookup(&pag->pag_ici_root, (void**)&iq, first_index, 1)) { - if ((iq->i_ino & mask) == first_index) + if ((XFS_INO_TO_AGINO(mp, iq->i_ino) & mask) == first_index) icl = iq->i_cluster; }