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kern: osd: abstract away the math for locating a slot method

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It's relatively simple, but we'll do it a couple of times; pull it
out into a macro.

Reviewed by:	imp (previous version), jamie
Differential Revision:	https://reviews.freebsd.org/D48074
This commit is contained in:
Kyle Evans committed 2026-06-24 22:08:13 -05:00
1 parent 65fba082f4
commit 72ebcfae48
1 file changed
+6 -4
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sys/kern/kern_osd.c
+6 -4
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@@ -73,6 +73,9 @@ SYSCTL_INT(_debug, OID_AUTO, osd, CTLFLAG_RWTUN, &osd_debug, 0, "OSD debug level
} \
} while (0)
#define OSD_METHOD(osdm, slot, method) \
((osdm).osd_methods[((slot) - 1) * (osdm).osd_nmethods + (method)])
static void do_osd_del(u_int type, struct osd *osd, u_int slot,
int list_locked);
@@ -139,8 +142,8 @@ osd_register(u_int type, osd_destructor_t destructor, const osd_method_t *method
osdm[type].osd_destructors[i] = destructor;
if (osdm[type].osd_nmethods != 0) {
for (m = 0; m < osdm[type].osd_nmethods; m++)
osdm[type].osd_methods[i * osdm[type].osd_nmethods + m]
= methods != NULL ? methods[m] : NULL;
OSD_METHOD(osdm[type], i + 1, m) =
methods != NULL ? methods[m] : NULL;
}
sx_xunlock(&osdm[type].osd_module_lock);
return (i + 1);
@@ -391,8 +394,7 @@ osd_call(u_int type, u_int method, void *obj, void *data)
/* Hole in the slot map; avoid dereferencing. */
if (osdm[type].osd_destructors[i] == NULL)
continue;
methodfun = osdm[type].osd_methods[i * osdm[type].osd_nmethods +
method];
methodfun = OSD_METHOD(osdm[type], i + 1, method);
if (methodfun != NULL && (error = methodfun(obj, data)) != 0)
break;
}