1 files changed, 29 insertions, 0 deletions

diff --git a/fs/xfs/linux-2.6/kmem.c b/fs/xfs/linux-2.6/kmem.c
index aba7fcf881a2..d59737589815 100644
--- a/fs/xfs/linux-2.6/kmem.c
+++ b/fs/xfs/linux-2.6/kmem.c
@@ -34,6 +34,14 @@ kmem_alloc(size_t size, unsigned int __nocast flags)
         gfp_t   lflags = kmem_flags_convert(flags);
         void    *ptr;
 
+#ifdef DEBUG
+        if (unlikely(!(flags & KM_LARGE) && (size > PAGE_SIZE))) {
+                printk(KERN_WARNING "Large %s attempt, size=%ld\n",
+                        __FUNCTION__, (long)size);
+                dump_stack();
+        }
+#endif
+
         do {
                 if (size < MAX_SLAB_SIZE || retries > MAX_VMALLOCS)
                         ptr = kmalloc(size, lflags);
@@ -60,6 +68,27 @@ kmem_zalloc(size_t size, unsigned int __nocast flags)
         return ptr;
 }
 
+void *
+kmem_zalloc_greedy(size_t *size, size_t minsize, size_t maxsize,
+                   unsigned int __nocast flags)
+{
+        void            *ptr;
+        size_t          kmsize = maxsize;
+        unsigned int    kmflags = (flags & ~KM_SLEEP) | KM_NOSLEEP;
+
+        while (!(ptr = kmem_zalloc(kmsize, kmflags))) {
+                if ((kmsize <= minsize) && (flags & KM_NOSLEEP))
+                        break;
+                if ((kmsize >>= 1) <= minsize) {
+                        kmsize = minsize;
+                        kmflags = flags;
+                }
+        }
+        if (ptr)
+                *size = kmsize;
+        return ptr;
+}
+
 void
 kmem_free(void *ptr, size_t size)
 {