Linux: Restrict # of cbrs we allocate at once

[openafs.git] / src / afs / afs.h

diff --git a/src/afs/afs.h b/src/afs/afs.h
index c135a1b..13614cb 100644 (file)
--- a/src/afs/afs.h
+++ b/src/afs/afs.h
@@ -85,7 +85,9 @@ extern int afs_shuttingdown;
 #define MAXNUMSYSNAMES 32      /* max that current constants allow */
 #define        NOTOKTIMEOUT    (2*3600)        /* time after which to timeout conns sans tokens */
 #define        NOPAG           0xffffffff
-#define AFS_NCBRS      1024    /* max # of call back return entries */
+
+
+
 #define AFS_MAXCBRSCALL        32      /* max to return in a given call (must be <= AFSCBMAX) */
 #define        AFS_SALLOC_LOW_WATER    250     /* Min free blocks before allocating more */
 #define        AFS_LRALLOCSIZ  4096    /* "Large" allocated size */
@@ -261,6 +263,16 @@ struct afs_cbr {
     unsigned int dynalloc:1;
 };
 
+#ifdef AFS_LINUX22_ENV
+/* On Linux, we have to be able to allocate the storage for this using
+ * kmalloc, as otherwise we may deadlock. So, it needs to be able to fit
+ * in a single page
+ */
+# define AFS_NCBRS     PAGE_SIZE/sizeof(struct afs_cbr)
+#else
+# define AFS_NCBRS     1024    /* max # of call back return entries */
+#endif
+
 /* cellinfo file magic number */
 #define AFS_CELLINFO_MAGIC     0xf32817cd