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acrn-kernel
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fs: dlm: use list_empty() to check last iteration 

This patch will use list_empty(&ls->ls_cb_delay) to check for last list
iteration. In case of a multiply count of MAX_CB_QUEUE and the list is
empty we do a extra goto more which we can avoid by checking on
list_empty().

Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
This commit is contained in:
Alexander Aring 2021-11-30 14:47:14 -05:00 committed by David Teigland
parent 1b9beda83e
commit f70813d6a5
1 changed files with 3 additions and 1 deletions
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4
fs/dlm/ast.c
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@ -300,6 +300,7 @@ void dlm_callback_resume(struct dlm_ls *ls)
{
struct dlm_lkb *lkb, *safe;
int count = 0, sum = 0;
bool empty;
clear_bit(LSFL_CB_DELAY, &ls->ls_flags);
@ -315,10 +316,11 @@ void dlm_callback_resume(struct dlm_ls *ls)
if (count == MAX_CB_QUEUE)
break;
}
empty = list_empty(&ls->ls_cb_delay);
mutex_unlock(&ls->ls_cb_mutex);
sum += count;
if (count == MAX_CB_QUEUE) {
if (!empty) {
count = 0;
cond_resched();
goto more;