This patchset improve the problem that the transaction may be blocked for a long time when it is being committed if there is heavy I/O.
In this patchset, - 0001-0005, 0007, 0011-0012 are random fix or code cleanup patch. - 0006, 0008-0010 introduce per-subvolume delalloc inode list and ordered extent list, which can reduce the flush time when we create snapshots. - 0013-0016 improve the block time during the transaction commit by removing the while loop at the beginning of the transaction commit. - 0017 improves the readability of the code. Miao Xie (17): Btrfs: fix accessing a freed tree root Btrfs: fix unprotected root node of the subvolume's inode rb-tree Btrfs: pause the space balance when remounting to R/O Btrfs: remove BUG_ON() in btrfs_read_fs_tree_no_radix() Btrfs: cleanup the similar code of the fs root read Btrfs: introduce grab/put functions for the root of the fs/file tree Btrfs: don't invoke btrfs_invalidate_inodes() in the spin lock context Btrfs: introduce per-subvolume delalloc inode list Btrfs: introduce per-subvolume ordered extent list Btrfs: just flush the delalloc inodes in the source tree before snapshot creation Btrfs: cleanup unnecessary assignment when cleaning up all the residual transaction Btrfs: remove the code for the impossible case in cleanup_transaction() Btrfs: don't wait for all the writers circularly during the transaction commit Btrfs: don't flush the delalloc inodes in the while loop if flushoncommit is set Btrfs: remove unnecessary varient ->num_joined in btrfs_transaction structure Btrfs: remove the time check in btrfs_commit_transaction() Btrfs: make the state of the transaction more readable fs/btrfs/ctree.h | 55 +++++-- fs/btrfs/dev-replace.c | 6 +- fs/btrfs/disk-io.c | 425 +++++++++++++++++++++++++++--------------------- fs/btrfs/disk-io.h | 32 +++- fs/btrfs/extent-tree.c | 20 +-- fs/btrfs/inode.c | 180 ++++++++++++++------ fs/btrfs/ioctl.c | 6 + fs/btrfs/ordered-data.c | 109 +++++++++---- fs/btrfs/ordered-data.h | 2 + fs/btrfs/relocation.c | 9 +- fs/btrfs/root-tree.c | 170 ++++++------------- fs/btrfs/super.c | 3 +- fs/btrfs/transaction.c | 271 ++++++++++++++++-------------- fs/btrfs/transaction.h | 49 ++++-- fs/btrfs/tree-log.c | 3 +- fs/btrfs/volumes.c | 13 +- fs/btrfs/volumes.h | 1 + 17 files changed, 791 insertions(+), 563 deletions(-) -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
