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Fix 'mmap' DSM implementation with allocations larger than 4 GB
author
Heikki Linnakangas
Tue, 13 Feb 2024 19:23:41 +0000
(21:23 +0200)
committer
Heikki Linnakangas
Tue, 13 Feb 2024 19:23:41 +0000
(21:23 +0200)
Fixes bug #18341. Backpatch to all supported versions.
Discussion: https://www.postgresql.org/message-id/18341-
ce16599e7fd6228c
@postgresql.org
src/backend/storage/ipc/dsm_impl.c
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diff --git
a/src/backend/storage/ipc/dsm_impl.c
b/src/backend/storage/ipc/dsm_impl.c
index 03aa47a1049e327dab658a6768e1d30a4e2b4ec2..8dd669e0ce9431a71a010f4bf6b13d8f118eb89d 100644
(file)
--- a/
src/backend/storage/ipc/dsm_impl.c
+++ b/
src/backend/storage/ipc/dsm_impl.c
@@
-873,7
+873,7
@@
dsm_impl_mmap(dsm_op op, dsm_handle handle, Size request_size,
* transferring data to the kernel.
*/
char *zbuffer = (char *) palloc0(ZBUFFER_SIZE);
-
uint32
remaining = request_size;
+
Size
remaining = request_size;
bool success = true;
/*