Re: [PATCH 1/5] file-posix: Support FUA writes

2025-03-10 Thread Stefan Hajnoczi
On Fri, Mar 07, 2025 at 11:16:30PM +0100, Kevin Wolf wrote: > Until now, FUA was always emulated with a separate flush after the write > for file-posix. The overhead of processing a second request can reduce > performance significantly for a guest disk that has disabled the write > cache, especiall

[PATCH 1/5] file-posix: Support FUA writes

2025-03-07 Thread Kevin Wolf
Until now, FUA was always emulated with a separate flush after the write for file-posix. The overhead of processing a second request can reduce performance significantly for a guest disk that has disabled the write cache, especially if the host disk is already write through, too, and the flush isn'