Btrfs: remove wait_ordered_range in btrfs_evict_inode

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When we delete an inode,

btrfs_evict_inode() {
    truncate_inode_pages_final()
        truncate_inode_pages_range()
            lock_page()
            truncate_cleanup_page()
                 btrfs_invalidatepage()
                      wait_on_page_writeback
                           btrfs_lookup_ordered_range()
                 cancel_dirty_page()
           unlock_page()
     ...
     btrfs_wait_ordered_range()
     ...

As VFS has called ->invalidatepage() to get all ordered extents done (if
there are any) and truncated all page cache pages (no dirty pages to
writeback after this step), wait_ordered_range() is just a noop.

Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

...

This commit is contained in:

Liu Bo 2018-09-12 06:06:22 +08:00 • committed by David Sterba

parent abb57ef3ff

commit 4183c52ce8

1 changed files with 0 additions and 3 deletions

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fs/btrfs/inode.c

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