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Commit 1521848c authored by Steven Whitehouse's avatar Steven Whitehouse Committed by David Teigland
Browse files

dlm: remove kmap/kunmap 



The pages used in lowcomms are not highmem, so kmap is not necessary.

Cc: Christine Caulfield <ccaulfie@redhat.com>
Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
Signed-off-by: default avatarDavid Teigland <teigland@redhat.com>
parent cd8e4679

fs/dlm/lowcomms.c

+0 −7
Original line number Diff line number Diff line
@@ -824,7 +824,6 @@ static void sctp_init_assoc(struct connection *con) 
	len = e->len;

	offset = e->offset;

	spin_unlock(&con->writequeue_lock);

	kmap(e->page);



	/* Send the first block off the write queue */

	iov[0].iov_base = page_address(e->page)+offset;
@@ -855,7 +854,6 @@ static void sctp_init_assoc(struct connection *con) 


		if (e->len == 0 && e->users == 0) {

			list_del(&e->list);

			kunmap(e->page);

			free_entry(e);

		}

		spin_unlock(&con->writequeue_lock);
@@ -1204,8 +1202,6 @@ void *dlm_lowcomms_get_buffer(int nodeid, int len, gfp_t allocation, char **ppc) 


	if (e) {

	got_one:

		if (users == 0)

			kmap(e->page);

		*ppc = page_address(e->page) + offset;

		return e;

	}
@@ -1234,7 +1230,6 @@ void dlm_lowcomms_commit_buffer(void *mh) 
	if (users)

		goto out;

	e->len = e->end - e->offset;

	kunmap(e->page);

	spin_unlock(&con->writequeue_lock);



	if (!test_and_set_bit(CF_WRITE_PENDING, &con->flags)) {
@@ -1273,7 +1268,6 @@ static void send_to_sock(struct connection *con) 
		offset = e->offset;

		BUG_ON(len == 0 && e->users == 0);

		spin_unlock(&con->writequeue_lock);

		kmap(e->page);



		ret = 0;

		if (len) {
@@ -1295,7 +1289,6 @@ static void send_to_sock(struct connection *con) 


		if (e->len == 0 && e->users == 0) {

			list_del(&e->list);

			kunmap(e->page);

			free_entry(e);

			continue;

		}