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Btrfs: document rules about bio async submit
authorLiu Bo <bo.li.liu@oracle.com>
Wed, 1 Nov 2017 23:19:27 +0000 (17:19 -0600)
committerDavid Sterba <dsterba@suse.com>
Mon, 22 Jan 2018 15:08:11 +0000 (16:08 +0100)
commit56c017a18ec8aa2cacad18d507b2052e463c2067
tree39ee15a9a1e66e7a2989eab1cbbfcfb3b45c8e28tree | snapshot
parent72823ba52f5679753c0188094e18ac1f37905e16commit | diff
Btrfs: document rules about bio async submit

These rules have been hidden in several if-else and are not
straightforward to follow, for example, dio submit hook's nocsum case
has a bug , i.e. doing async submit instead of sync submit, which has
been fixed recently.

This is documenting the rules for reference.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
fs/btrfs/inode.c diff | blob | history
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