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[XFS] replace the XFS buf iodone semaphore with a completion

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The xfs_buf_t b_iodonesema is really just a semaphore that wants to be a
completion. Change it to a completion and remove the last user of the
sema_t from XFS.

SGI-PV: 981498

SGI-Modid: xfs-linux-melb:xfs-kern:31815a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
This commit is contained in:
David Chinner
2008-08-13 16:36:11 +10:00
committed by Lachlan McIlroy
parent 12017faf38
commit b4dd330b9e
4 changed files with 7 additions and 7 deletions
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6
fs/xfs/linux-2.6/xfs_buf.c
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@@ -253,7 +253,7 @@ _xfs_buf_initialize(
memset(bp, 0, sizeof(xfs_buf_t));
atomic_set(&bp->b_hold, 1);
init_MUTEX_LOCKED(&bp->b_iodonesema);
init_completion(&bp->b_iowait);
INIT_LIST_HEAD(&bp->b_list);
INIT_LIST_HEAD(&bp->b_hash_list);
init_MUTEX_LOCKED(&bp->b_sema); /* held, no waiters */
@@ -1033,7 +1033,7 @@ xfs_buf_ioend(
xfs_buf_iodone_work(&bp->b_iodone_work);
}
} else {
up(&bp->b_iodonesema);
complete(&bp->b_iowait);
}
}
@@ -1271,7 +1271,7 @@ xfs_buf_iowait(
XB_TRACE(bp, "iowait", 0);
if (atomic_read(&bp->b_io_remaining))
blk_run_address_space(bp->b_target->bt_mapping);
down(&bp->b_iodonesema);
wait_for_completion(&bp->b_iowait);
XB_TRACE(bp, "iowaited", (long)bp->b_error);
return bp->b_error;
}