diff options
Diffstat (limited to 'src/backend/storage/buffer/buf_init.c')
| -rw-r--r-- | src/backend/storage/buffer/buf_init.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/src/backend/storage/buffer/buf_init.c b/src/backend/storage/buffer/buf_init.c index 20946c47cb4..0057443f0c6 100644 --- a/src/backend/storage/buffer/buf_init.c +++ b/src/backend/storage/buffer/buf_init.c @@ -78,9 +78,12 @@ InitBufferPool(void) NBuffers * sizeof(BufferDescPadded), &foundDescs); + /* Align buffer pool on IO page size boundary. */ BufferBlocks = (char *) - ShmemInitStruct("Buffer Blocks", - NBuffers * (Size) BLCKSZ, &foundBufs); + TYPEALIGN(PG_IO_ALIGN_SIZE, + ShmemInitStruct("Buffer Blocks", + NBuffers * (Size) BLCKSZ + PG_IO_ALIGN_SIZE, + &foundBufs)); /* Align condition variables to cacheline boundary. */ BufferIOCVArray = (ConditionVariableMinimallyPadded *) @@ -163,7 +166,8 @@ BufferShmemSize(void) /* to allow aligning buffer descriptors */ size = add_size(size, PG_CACHE_LINE_SIZE); - /* size of data pages */ + /* size of data pages, plus alignment padding */ + size = add_size(size, PG_IO_ALIGN_SIZE); size = add_size(size, mul_size(NBuffers, BLCKSZ)); /* size of stuff controlled by freelist.c */ |