btrfs_async_submit_limit() would return the q depth to be 256, however when we are using it we are making it 2/3 times of it. So instead let the function return the final computed value. Signed-off-by: Anand Jain <anand.jain@xxxxxxxxxx> --- fs/btrfs/disk-io.c | 6 ++++-- fs/btrfs/volumes.c | 1 - 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index dfdab849037b..e58bbc2a68a5 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -861,7 +861,10 @@ unsigned long btrfs_async_submit_limit(struct btrfs_fs_info *info) unsigned long limit = min_t(unsigned long, info->thread_pool_size, info->fs_devices->open_devices); - return 256 * limit; + /* + * As of now limit is computed as 2/3 * 256. + */ + return 170 * limit; } static void run_one_async_start(struct btrfs_work *work) @@ -887,7 +890,6 @@ static void run_one_async_done(struct btrfs_work *work) fs_info = async->fs_info; limit = btrfs_async_submit_limit(fs_info); - limit = limit * 2 / 3; /* * atomic_dec_return implies a barrier for waitqueue_active diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index d1d8aa226bff..8044790c5de6 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -382,7 +382,6 @@ static noinline void run_scheduled_bios(struct btrfs_device *device) bdi = device->bdev->bd_bdi; limit = btrfs_async_submit_limit(fs_info); - limit = limit * 2 / 3; loop: spin_lock(&device->io_lock); -- 2.13.1 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
