luck/tmp_suning_uos_patched
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dlm: remove kmap/kunmap

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

Cc: Christine Caulfield <ccaulfie@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
This commit is contained in:
Steven Whitehouse 2008-11-12 17:00:16 -06:00 committed by David Teigland
parent cd8e4679bd
commit 1521848cbb
1 changed files with 0 additions and 7 deletions
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7
fs/dlm/lowcomms.c
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@ -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;
}