Hi all, This series changes the directory update code to retain the ILOCK on all files involved in a rename until the end of the operation. The upcoming parent pointers patchset applies parent pointers in a separate chained update from the actual directory update, which is why it is now necessary to keep the ILOCK instead of dropping it after the first transaction in the chain. As a side effect, we no longer need to hold the IOLOCK during an rmapbt scan of inodes to serialize the scan with ongoing directory updates. If you're going to start using this code, I strongly recommend pulling from my git trees, which are linked below. This has been running on the djcloud for months with no problems. Enjoy! Comments and questions are, as always, welcome. --D kernel git tree: https://git.kernel.org/cgit/linux/kernel/git/djwong/xfs-linux.git/log/?h=retain-ilock-during-dir-ops xfsprogs git tree: https://git.kernel.org/cgit/linux/kernel/git/djwong/xfsprogs-dev.git/log/?h=retain-ilock-during-dir-ops --- Commits in this patchset: * xfs: Increase XFS_DEFER_OPS_NR_INODES to 5 * xfs: Increase XFS_QM_TRANS_MAXDQS to 5 * xfs: Hold inode locks in xfs_ialloc * xfs: Hold inode locks in xfs_trans_alloc_dir * xfs: Hold inode locks in xfs_rename * xfs: don't pick up IOLOCK during rmapbt repair scan * xfs: unlock new repair tempfiles after creation --- fs/xfs/libxfs/xfs_defer.c | 6 ++- fs/xfs/libxfs/xfs_defer.h | 8 +++- fs/xfs/scrub/rmap_repair.c | 16 ------- fs/xfs/scrub/tempfile.c | 2 + fs/xfs/xfs_dquot.c | 41 ++++++++++++++++++ fs/xfs/xfs_dquot.h | 1 fs/xfs/xfs_inode.c | 98 ++++++++++++++++++++++++++++++++------------ fs/xfs/xfs_inode.h | 2 + fs/xfs/xfs_qm.c | 4 +- fs/xfs/xfs_qm.h | 2 - fs/xfs/xfs_symlink.c | 6 ++- fs/xfs/xfs_trans.c | 9 +++- fs/xfs/xfs_trans_dquot.c | 15 ++++--- 13 files changed, 156 insertions(+), 54 deletions(-)
