![]() ![]() The same split is also done for the function to update the file modification time. Two functions: check function and a function for the removal of file privileges. Splits the functions for checking if the file privileges need to be removed in Support for async buffered write support and inode time modification Sets the IOMAP_NOWAIT flag in iomap if IOCB_NOWAIT has been setĪdds the iomap async buffered write support to the xfs iomap layer.Īdds async buffered write support to the xfs iomap layer. InĪddition the check in generic_write_checks is modified to allow for asyncĬhanges to the iomap page create function to allow the caller to specify To support async buffered writes the flag FMODE_BUF_WASYNC is introduced. In addition the latency of buffered write operations is reduced considerably. Increasing the iodepth further does not lead to improvements. Same or better performance with the exisiting code an io depth of 4 is required. Io-worker process) and also the latency is considerably reduced. (compared to the exiting behavior, where buffered writes are processed by an Is already a time update in process, other write requests for the same file,Ĭan skip the update of the modification time.įor fio the following results have been obtained with a queue depth ofįor an io depth of 1, the new patch improves throughput by over three times Time updates will be processed in the slow path. In xfs can be granted immediately and no additional blocks need to be read The fast path the required pages must be in the page cache, the required locks Now possible to support buffered writes in the fast path. Slow path, by processing them in the io workers. Currently io-uring only supports buffered writes in the This patch series adds support for async buffered writes when using both To: io-uring, kernel-team, linux-mm, linux-xfs, linux-fsdevel ` (13 more replies) 0 siblings, 14 replies 25+ messages in threadįrom: Stefan Roesch 17:17 UTC ( / raw) 17:17 ` mm: Move starting of background writeback into the main balancing loop Stefan Roesch ![]() Io-uring/xfs: support async buffered writes All of help / color / mirror / Atom feed * io-uring/xfs: support async buffered writes 17:17 Stefan Roesch ![]()
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