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Btrfs: Change the congestion functions to meter the number of async submits as well

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The async submit workqueue was absorbing too many requests, leading to long
stalls where the async submitters were stalling.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2008-05-15 16:15:45 -04:00
parent 211c17f51f
commit cb03c743c6
2 changed files with 10 additions and 0 deletions
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fs/btrfs/ctree.h
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@@ -522,6 +522,7 @@ struct btrfs_fs_info {
struct work_struct async_submit_work;
spinlock_t end_io_work_lock;
spinlock_t async_submit_work_lock;
atomic_t nr_async_submits;
#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,18)
struct work_struct trans_work;