d87251048a
1. Backends waiting for buffer I/O are now interruptible. 2. If something goes wrong in a backend that is currently performing I/O, waiting backends no longer wake up until that backend reaches AbortBufferIO() and broadcasts on the CV. Previously, any waiters would wake up (because the I/O lock was automatically released) and then busy-loop until AbortBufferIO() cleared BM_IO_IN_PROGRESS. 3. LWLockMinimallyPadded is removed, as it would now be unused. Author: Robert Haas <robertmhaas@gmail.com> Reviewed-by: Thomas Munro <thomas.munro@gmail.com> Reviewed-by: Julien Rouhaud <rjuju123@gmail.com> Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us> (earlier version, 2016) Discussion: https://postgr.es/m/CA%2BhUKGJ8nBFrjLuCTuqKN0pd2PQOwj9b_jnsiGFFMDvUxahj_A%40mail.gmail.com Discussion: https://postgr.es/m/CA+Tgmoaj2aPti0yho7FeEf2qt-JgQPRWb0gci_o1Hfr=C56Xng@mail.gmail.com |
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| TODO | ||