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NFS: Remove unuse function nfs_page_group_lock_wait()

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Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Trond Myklebust
2017-07-17 10:51:02 -04:00
parent 902a4c0046
commit dee83046e7
2 changed files with 0 additions and 22 deletions
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21
fs/nfs/pagelist.c
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@@ -165,27 +165,6 @@ nfs_page_group_lock(struct nfs_page *req, bool nonblock)
return -EAGAIN;
}
/*
* nfs_page_group_lock_wait - wait for the lock to clear, but don't grab it
* @req - a request in the group
*
* This is a blocking call to wait for the group lock to be cleared.
*/
void
nfs_page_group_lock_wait(struct nfs_page *req)
{
struct nfs_page *head = req->wb_head;
WARN_ON_ONCE(head != head->wb_head);
if (!test_bit(PG_HEADLOCK, &head->wb_flags))
return;
set_bit(PG_CONTENDED1, &head->wb_flags);
smp_mb__after_atomic();
wait_on_bit(&head->wb_flags, PG_HEADLOCK,
TASK_UNINTERRUPTIBLE);
}
/*
* nfs_page_group_unlock - unlock the head of the page group
* @req - request in group that is to be unlocked