Hi Viro,
Thank you for your help and advice.
I made the following patches referring to your advice.
I try to debugging by using this patch.
Thanks again,
Haruo
diff -urN linux-2.6.12-rc2.orig/fs/file_table.c linux-2.6.12-rc2/fs/file_table.c
--- linux-2.6.12-rc2.orig/fs/file_table.c 2005-03-02 16:37:47.000000000
+0900
+++ linux-2.6.12-rc2/fs/file_table.c 2005-04-05 11:21:58.000000000 +0900
@@ -26,6 +26,7 @@
/* public. Not pretty! */
__cacheline_aligned_in_smp DEFINE_SPINLOCK(files_lock);
+pid_t holder_pid;
static DEFINE_SPINLOCK(filp_count_lock);
diff -urN linux-2.6.12-rc2.orig/include/linux/fs.h
linux-2.6.12-rc2/include/linux/fs.h
--- linux-2.6.12-rc2.orig/include/linux/fs.h 2005-04-05 11:12:53.000000000
+0900
+++ linux-2.6.12-rc2/include/linux/fs.h 2005-04-05 11:20:15.000000000 +0900
@@ -602,8 +602,17 @@
struct address_space *f_mapping;
};
extern spinlock_t files_lock;
-#define file_list_lock() spin_lock(&files_lock);
-#define file_list_unlock() spin_unlock(&files_lock);
+extern pid_t holder_pid;
+#define file_list_lock() \
+ do { \
+ spin_lock(&files_lock); \
+ holder_pid = current->pid; \
+ }while(0)
+#define file_list_unlock() \
+ do { \
+ holder_pid = 0; \
+ spin_unlock(&files_lock); \
+ }while(0)
#define get_file(x) atomic_inc(&(x)->f_count)
#define file_count(x) atomic_read(&(x)->f_count)
-
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