[Xen-devel] [PATCH v2 20/21] memblock: memblock_alloc_try_nid: don't panic

[Mike Rapoport <rppt@xxxxxxxxxxxxx>]

As all the memblock_alloc*() users are now checking the return value and
panic() in case of error, the panic() call can be removed from the core
memblock allocator, namely memblock_alloc_try_nid().

Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxx>
---
 mm/memblock.c | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/mm/memblock.c b/mm/memblock.c
index 03b3929..7164275 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -1526,7 +1526,7 @@ void * __init memblock_alloc_try_nid_nopanic(
 }
 
 /**
- * memblock_alloc_try_nid - allocate boot memory block with panicking
+ * memblock_alloc_try_nid - allocate boot memory block
  * @size: size of memory block to be allocated in bytes
  * @align: alignment of the region and block's size
  * @min_addr: the lower bound of the memory region from where the allocation
@@ -1536,9 +1536,8 @@ void * __init memblock_alloc_try_nid_nopanic(
  *           allocate only from memory limited by memblock.current_limit value
  * @nid: nid of the free area to find, %NUMA_NO_NODE for any node
  *
- * Public panicking version of memblock_alloc_try_nid_nopanic()
- * which provides debug information (including caller info), if enabled,
- * and panics if the request can not be satisfied.
+ * Public function, provides additional debug information (including caller
+ * info), if enabled. This function zeroes the allocated memory.
  *
  * Return:
  * Virtual address of allocated memory block on success, NULL on failure.
@@ -1555,14 +1554,10 @@ void * __init memblock_alloc_try_nid(
                     &max_addr, (void *)_RET_IP_);
        ptr = memblock_alloc_internal(size, align,
                                           min_addr, max_addr, nid);
-       if (ptr) {
+       if (ptr)
                memset(ptr, 0, size);
-               return ptr;
-       }
 
-       panic("%s: Failed to allocate %llu bytes align=0x%llx nid=%d from=%pa 
max_addr=%pa\n",
-             __func__, (u64)size, (u64)align, nid, &min_addr, &max_addr);
-       return NULL;
+       return ptr;
 }
 
 /**
-- 
2.7.4


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