forked from Minki/linux
98e2474640
-----BEGIN PGP SIGNATURE----- iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAmLkm7UQHGF4Ym9lQGtl cm5lbC5kawAKCRD301j7KXHgpldTEADTg/96R+eq78UZBNZmdifY9/qwQD+kzNiK ACDoYZFSbWUjMeOWqRxbYr6mXBKHnGHyTGlraTTpLDzhpB1xwoWfgOK9uOYXW/Ik eWfgTujPW/8v/l/z86khE+GH9b/maGCRqNZgS6uLVLzhxG6oCkoYTyOh1iHaF1VM Rma4nbJ8GSEDtiXNDl0Bznnyks/pzwoz/9slwzZ7PxtFwZsBxKuxgMUR5HIXdRp7 5iUoFJhZrGWyi/dbQZUsK/9VYVVnKkcBCz2pb4GEmC+3dS/vlPEoeWUpPHInNyd1 9NB9v8c+KFmQaWnCxuxcdHvCfmRRQrX8Pr8/OBNZKO6McYrKWKA+lurp4EGClE3m cZdK+P/9FS/Eeua8hum9UnbPAqsJPqLTbpbrySeBdd4iFA6u7rRqDX2+nz3PNe9U 1b7V1bWBIEY/Rsw/PKo59oIeV0auD8v9OCHJ0lF2pv6dRln2/W0y1Qfd1DI18xFG +9bBnQzhF7R0O8UP5ApVayQCYrd906YsSVUOqAiLmUs/BoOgRq6g/0BqSOVVKE2u 5iq8zTsVMkxY0ZpExwZST/700JwkPIV4SVPEYRC6QssFTcylvlisIek6XYSS9HX4 Z6gzMwJW1H47bEfG4JolTI8uBjp0hQLCPX0O0XFLVnbHQwN0kjIBmv3axAwJO2NV qrrHXjf09w== =hV7G -----END PGP SIGNATURE----- Merge tag 'for-5.20/io_uring-buffered-writes-2022-07-29' of git://git.kernel.dk/linux-block Pull io_uring buffered writes support from Jens Axboe: "This contains support for buffered writes, specifically for XFS. btrfs is in progress, will be coming in the next release. io_uring does support buffered writes on any file type, but since the buffered write path just always -EAGAIN (or -EOPNOTSUPP) any attempt to do so if IOCB_NOWAIT is set, any buffered write will effectively be handled by io-wq offload. This isn't very efficient, and we even have specific code in io-wq to serialize buffered writes to the same inode to avoid further inefficiencies with thread offload. This is particularly sad since most buffered writes don't block, they simply copy data to a page and dirty it. With this pull request, we can handle buffered writes a lot more effiently. If balance_dirty_pages() needs to block, we back off on writes as indicated. This improves buffered write support by 2-3x. Jan Kara helped with the mm bits for this, and Stefan handled the fs/iomap/xfs/io_uring parts of it" * tag 'for-5.20/io_uring-buffered-writes-2022-07-29' of git://git.kernel.dk/linux-block: mm: honor FGP_NOWAIT for page cache page allocation xfs: Add async buffered write support xfs: Specify lockmode when calling xfs_ilock_for_iomap() io_uring: Add tracepoint for short writes io_uring: fix issue with io_write() not always undoing sb_start_write() io_uring: Add support for async buffered writes fs: Add async write file modification handling. fs: Split off inode_needs_update_time and __file_update_time fs: add __remove_file_privs() with flags parameter fs: add a FMODE_BUF_WASYNC flags for f_mode iomap: Return -EAGAIN from iomap_write_iter() iomap: Add async buffered write support iomap: Add flags parameter to iomap_page_create() mm: Add balance_dirty_pages_ratelimited_flags() function mm: Move updates of dirty_exceeded into one place mm: Move starting of background writeback into the main balancing loop |
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| .. | ||
| events | ||
| stages | ||
| bpf_probe.h | ||
| define_custom_trace.h | ||
| define_trace.h | ||
| perf.h | ||
| syscall.h | ||
| trace_custom_events.h | ||
| trace_events.h | ||