Btrfs: make plug in writing meta blocks really work

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We have started plug in btrfs_write_and_wait_marked_extents() but the
generated IOs actually go to device's schedule IO list where the work
is doing in another task, thus the started plug doesn't make any
sense.

And since we wait for IOs immediately after writing meta blocks, it's
the same case as writing log tree, doing sync submit can merge more
IOs.

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

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Liu Bo 2017-08-21 15:49:59 -06:00 • committed by David Sterba

parent d8953d69bc

commit 6300463b14

2 changed files with 6 additions and 2 deletions

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6

fs/btrfs/disk-io.c

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2

fs/btrfs/transaction.c

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