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Commit6ca7cd8

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Assert that buffer is pinned in LockBuffer().
Strengthen the LockBuffer() assertion that verifies BufferIsValid() bymaking it verify BufferIsPinned() instead. Do the same in nearbyrelated functions.There is probably not much chance that anybody will try to lock a bufferthat is not already pinned, but we might as well make sure of that.
1 parent0fa0b48 commit6ca7cd8

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‎src/backend/storage/buffer/bufmgr.c‎

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -3743,7 +3743,7 @@ LockBuffer(Buffer buffer, int mode)
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{
37443744
BufferDesc*buf;
37453745

3746-
Assert(BufferIsValid(buffer));
3746+
Assert(BufferIsPinned(buffer));
37473747
if (BufferIsLocal(buffer))
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return;/* local buffers need no lock */
37493749

@@ -3769,7 +3769,7 @@ ConditionalLockBuffer(Buffer buffer)
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{
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BufferDesc*buf;
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3772-
Assert(BufferIsValid(buffer));
3772+
Assert(BufferIsPinned(buffer));
37733773
if (BufferIsLocal(buffer))
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return true;/* act as though we got it */
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@@ -3801,7 +3801,7 @@ LockBufferForCleanup(Buffer buffer)
38013801
BufferDesc*bufHdr;
38023802
char*new_status=NULL;
38033803

3804-
Assert(BufferIsValid(buffer));
3804+
Assert(BufferIsPinned(buffer));
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Assert(PinCountWaitBuf==NULL);
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38073807
if (BufferIsLocal(buffer))

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