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| author | Chris Mason | 2008-07-17 18:53:51 +0200 |
|---|---|---|
| committer | Chris Mason | 2008-09-25 17:04:04 +0200 |
| commit | 247e743cbe6e655768c3679f84821e03c1577902 (patch) | |
| tree | edc2b27284365f019859a936885bd100960eb659 /fs/btrfs/ctree.h | |
| parent | Btrfs: New data=ordered implementation (diff) | |
| download | kernel-qcow2-linux-247e743cbe6e655768c3679f84821e03c1577902.tar.gz kernel-qcow2-linux-247e743cbe6e655768c3679f84821e03c1577902.tar.xz kernel-qcow2-linux-247e743cbe6e655768c3679f84821e03c1577902.zip | |
Btrfs: Use async helpers to deal with pages that have been improperly dirtied
Higher layers sometimes call set_page_dirty without asking the filesystem
to help. This causes many problems for the data=ordered and cow code.
This commit detects pages that haven't been properly setup for IO and
kicks off an async helper to deal with them.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index ceebc052ddcb..4ddc8a8f82cd 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -546,6 +546,12 @@ struct btrfs_fs_info { struct btrfs_workers endio_workers; struct btrfs_workers endio_write_workers; struct btrfs_workers submit_workers; + /* + * fixup workers take dirty pages that didn't properly go through + * the cow mechanism and make them safe to write. It happens + * for the sys_munmap function call path + */ + struct btrfs_workers fixup_workers; struct task_struct *transaction_kthread; struct task_struct *cleaner_kthread; int thread_pool_size; |