diff options
Diffstat (limited to 'src/backend/storage/aio/read_stream.c')
| -rw-r--r-- | src/backend/storage/aio/read_stream.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/backend/storage/aio/read_stream.c b/src/backend/storage/aio/read_stream.c index d65fa07b44c..45bdf819d57 100644 --- a/src/backend/storage/aio/read_stream.c +++ b/src/backend/storage/aio/read_stream.c @@ -515,9 +515,10 @@ read_stream_begin_impl(int flags, * finishes we don't want to have to wait for its buffers to be consumed * before starting a new one. * - * Be careful not to allow int16 to overflow (even though that's not - * possible with the current GUC range limits), allowing also for the - * spare entry and the overflow space. + * Be careful not to allow int16 to overflow. That is possible with the + * current GUC range limits, so this is an artificial limit of ~32k + * buffers and we'd need to adjust the types to exceed that. We also have + * to allow for the spare entry and the overflow space. */ max_pinned_buffers = (max_ios + 1) * io_combine_limit; max_pinned_buffers = Min(max_pinned_buffers, |