{
assert_spin_locked(&cli->cl_loi_list_lock);
LASSERT(!(pga->flag & OBD_BRW_FROM_GRANT));
- atomic_long_inc(&obd_dirty_pages);
cli->cl_dirty_pages++;
pga->flag |= OBD_BRW_FROM_GRANT;
CDEBUG(D_CACHE, "using %lu grant credits for brw %p page %p\n",
if (rc < 0)
return 0;
- if (cli->cl_dirty_pages < cli->cl_dirty_max_pages &&
- 1 + atomic_long_read(&obd_dirty_pages) <= obd_max_dirty_pages) {
- osc_consume_write_grant(cli, &oap->oap_brw_page);
- if (transient) {
- cli->cl_dirty_transit++;
- atomic_long_inc(&obd_dirty_transit_pages);
- oap->oap_brw_flags |= OBD_BRW_NOCACHE;
- }
- rc = 1;
- } else {
- __osc_unreserve_grant(cli, bytes, bytes);
- rc = 0;
+ if (cli->cl_dirty_pages < cli->cl_dirty_max_pages) {
+ if (atomic_long_add_return(1, &obd_dirty_pages) <=
+ obd_max_dirty_pages) {
+ osc_consume_write_grant(cli, &oap->oap_brw_page);
+ if (transient) {
+ cli->cl_dirty_transit++;
+ atomic_long_inc(&obd_dirty_transit_pages);
+ oap->oap_brw_flags |= OBD_BRW_NOCACHE;
+ }
+ rc = 1;
+ goto out;
+ } else
+ atomic_long_dec(&obd_dirty_pages);
}
+ __osc_unreserve_grant(cli, bytes, bytes);
+
+out:
return rc;
}