Btrfs: remove scrub_super_lock holding in btrfs_sync_log()

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Originally, we introduced scrub_super_lock to synchronize
tree log code with scrubbing super.

However we can replace scrub_super_lock with device_list_mutex,
because writing super will hold this mutex, this will reduce an extra
lock holding when writing supers in sync log code.

Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>

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Wang Shilong 2013-10-25 19:12:02 +08:00 • committed by Chris Mason

parent 7fdf4b608d

commit 9b011adfe1

5 changed files with 8 additions and 20 deletions

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3

fs/btrfs/ctree.h

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1

fs/btrfs/disk-io.c

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18

fs/btrfs/scrub.c

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2

fs/btrfs/tree-log.c

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4

fs/btrfs/volumes.h

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