xfs: support ability to wait on new inodes
authorBrian Foster <bfoster@redhat.com>
Wed, 26 Apr 2017 15:30:39 +0000 (08:30 -0700)
committerDarrick J. Wong <darrick.wong@oracle.com>
Fri, 28 Apr 2017 15:11:08 +0000 (08:11 -0700)
commit756baca27fff3ecaeab9dbc7a5ee35a1d7bc0c7f
tree75e7bd77fba23d4d0ab39659d3fe6b723d46717c
parent8f720d9f892e0e223dab8400f03130bc208c72e7
xfs: support ability to wait on new inodes

Inodes that are inserted into the perag tree but still under
construction are flagged with the XFS_INEW bit. Most contexts either
skip such inodes when they are encountered or have the ability to
handle them.

The runtime quotaoff sequence introduces a context that must wait
for construction of such inodes to correctly ensure that all dquots
in the fs are released. In anticipation of this, support the ability
to wait on new inodes. Wake the appropriate bit when XFS_INEW is
cleared.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
fs/xfs/xfs_icache.c
fs/xfs/xfs_inode.h