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Btrfs: Use async helpers to deal with pages that have been improperly dirtied

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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>
This commit is contained in:
Chris Mason
2008-07-17 12:53:51 -04:00
parent e6dcd2dc9c
commit 247e743cbe
6 changed files with 106 additions and 9 deletions
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4
fs/btrfs/disk-io.c
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@@ -1329,11 +1329,13 @@ struct btrfs_root *open_ctree(struct super_block *sb,
*/
btrfs_init_workers(&fs_info->workers, fs_info->thread_pool_size);
btrfs_init_workers(&fs_info->submit_workers, fs_info->thread_pool_size);
btrfs_init_workers(&fs_info->fixup_workers, 1);
btrfs_init_workers(&fs_info->endio_workers, fs_info->thread_pool_size);
btrfs_init_workers(&fs_info->endio_write_workers,
fs_info->thread_pool_size);
btrfs_start_workers(&fs_info->workers, 1);
btrfs_start_workers(&fs_info->submit_workers, 1);
btrfs_start_workers(&fs_info->fixup_workers, 1);
btrfs_start_workers(&fs_info->endio_workers, fs_info->thread_pool_size);
btrfs_start_workers(&fs_info->endio_write_workers,
fs_info->thread_pool_size);
@@ -1454,6 +1456,7 @@ fail_tree_root:
fail_sys_array:
fail_sb_buffer:
extent_io_tree_empty_lru(&BTRFS_I(fs_info->btree_inode)->io_tree);
btrfs_stop_workers(&fs_info->fixup_workers);
btrfs_stop_workers(&fs_info->workers);
btrfs_stop_workers(&fs_info->endio_workers);
btrfs_stop_workers(&fs_info->endio_write_workers);
@@ -1710,6 +1713,7 @@ int close_ctree(struct btrfs_root *root)
truncate_inode_pages(fs_info->btree_inode->i_mapping, 0);
btrfs_stop_workers(&fs_info->fixup_workers);
btrfs_stop_workers(&fs_info->workers);
btrfs_stop_workers(&fs_info->endio_workers);
btrfs_stop_workers(&fs_info->endio_write_workers);