From: "Darrick J. Wong" darrick.wong@oracle.com
commit 15a268d9f263ed3a0601a1296568241a5a3da7aa upstream.
Log recovery frees all the inodes stored in the unlinked list, which can cause expansion of the free inode btree. The ifree code skips block reservations if it thinks there's a per-AG space reservation, but we don't set up the reservation until after log recovery, which means that a finobt expansion blows up in xfs_trans_mod_sb when we exceed the transaction's block reservation.
To fix this, we set the "no finobt reservation" flag to true when we create the xfs_mount and only set it to false if we confirm that every AG had enough free space to put aside for the finobt.
Signed-off-by: Darrick J. Wong darrick.wong@oracle.com Reviewed-by: Christoph Hellwig hch@lst.de Reviewed-by: Dave Chinner dchinner@redhat.com Suggested-by: Amir Goldstein amir73il@gmail.com Reviewed-by: Amir Goldstein amir73il@gmail.com Signed-off-by: Luis Chamberlain mcgrof@kernel.org --- fs/xfs/xfs_fsops.c | 1 + fs/xfs/xfs_super.c | 7 +++++++ 2 files changed, 8 insertions(+)
diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c index 7c00b8bedfe3..09fd602507ef 100644 --- a/fs/xfs/xfs_fsops.c +++ b/fs/xfs/xfs_fsops.c @@ -534,6 +534,7 @@ xfs_fs_reserve_ag_blocks( int error = 0; int err2;
+ mp->m_finobt_nores = false; for (agno = 0; agno < mp->m_sb.sb_agcount; agno++) { pag = xfs_perag_get(mp, agno); err2 = xfs_ag_resv_init(pag, NULL); diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 207ee302b1bb..dce8114e3198 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -1561,6 +1561,13 @@ xfs_mount_alloc( INIT_DELAYED_WORK(&mp->m_eofblocks_work, xfs_eofblocks_worker); INIT_DELAYED_WORK(&mp->m_cowblocks_work, xfs_cowblocks_worker); mp->m_kobj.kobject.kset = xfs_kset; + /* + * We don't create the finobt per-ag space reservation until after log + * recovery, so we must set this to true so that an ifree transaction + * started during log recovery will not depend on space reservations + * for finobt expansion. + */ + mp->m_finobt_nores = true; return mp; }