From e8341d9f6348640dff01d8c4a33695dc82bab5a3 Mon Sep 17 00:00:00 2001 From: Brian Foster Date: Mon, 8 Jan 2018 10:41:36 -0800 Subject: [PATCH] xfs: fix up agi unlinked list reservations The current AGI unlinked list addition and removal reservations do not reflect the worst case log usage. An unlinked list removal can log up to two on-disk inode clusters but only includes reservation for one. An unlinked list addition logs the on-disk cluster but includes reservation for an in-core inode. Update the AGI unlinked list reservation helpers to calculate the correct worst case reservation for the associated operations. Signed-off-by: Brian Foster Reviewed-by: Dave Chinner Reviewed-by: Darrick J. Wong Signed-off-by: Darrick J. Wong --- fs/xfs/libxfs/xfs_trans_resv.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/fs/xfs/libxfs/xfs_trans_resv.c b/fs/xfs/libxfs/xfs_trans_resv.c index 838566b85622..173b1bc13ffe 100644 --- a/fs/xfs/libxfs/xfs_trans_resv.c +++ b/fs/xfs/libxfs/xfs_trans_resv.c @@ -282,13 +282,14 @@ xfs_calc_rename_reservation( * For removing an inode from unlinked list at first, we can modify: * the agi hash list and counters: sector size * the on disk inode before ours in the agi hash list: inode cluster size + * the on disk inode in the agi hash list: inode cluster size */ STATIC uint xfs_calc_iunlink_remove_reservation( struct xfs_mount *mp) { return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + - max_t(uint, XFS_FSB_TO_B(mp, 1), mp->m_inode_cluster_size); + 2 * max_t(uint, XFS_FSB_TO_B(mp, 1), mp->m_inode_cluster_size); } /* @@ -320,13 +321,13 @@ xfs_calc_link_reservation( /* * For adding an inode to unlinked list we can modify: * the agi hash list: sector size - * the unlinked inode: inode size + * the on disk inode: inode cluster size */ STATIC uint xfs_calc_iunlink_add_reservation(xfs_mount_t *mp) { return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + - xfs_calc_inode_res(mp, 1); + max_t(uint, XFS_FSB_TO_B(mp, 1), mp->m_inode_cluster_size); } /*