Title: [8152] trunk/arch/blackfin/kernel/traps.c: Task [#5545], revise previous commit again, skip checking the MMs if their mmap_sem were held in decode_address()
- Revision
- 8152
- Author
- gyang
- Date
- 2010-01-13 22:38:43 -0500 (Wed, 13 Jan 2010)
Log Message
Task [#5545], revise previous commit again, skip checking the MMs if their mmap_sem were held in decode_address()
Modified Paths
Diff
Modified: trunk/arch/blackfin/kernel/traps.c (8151 => 8152)
--- trunk/arch/blackfin/kernel/traps.c 2010-01-13 13:28:45 UTC (rev 8151)
+++ trunk/arch/blackfin/kernel/traps.c 2010-01-14 03:38:43 UTC (rev 8152)
@@ -138,8 +138,9 @@
if (!mm)
continue;
- while (!down_read_trylock(&mm->mmap_sem))
- barrier();
+ if (!down_read_trylock(&mm->mmap_sem)) {
+ continue;
+ }
for (n = rb_first(&mm->mm_rb); n; n = rb_next(n)) {
struct vm_area_struct *vma;
@@ -196,7 +197,10 @@
mmput(mm);
}
- /* we were unable to find this address anywhere */
+ /*
+ * we were unable to find this address anywhere,
+ * or some MMs were skipped because they were in use.
+ */
sprintf(buf, "/* kernel dynamic memory */");
done:
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