linux/fs/fuse/dev.c, branch v4.9

Merge branch 'work.splice_read' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2016-10-07T22:36:58Z

Pull VFS splice updates from Al Viro: "There's a bunch of branches this cycle, both mine and from other folks and I'd rather send pull requests separately. This one is the conversion of ->splice_read() to ITER_PIPE iov_iter (and introduction of such). Gets rid of a lot of code in fs/splice.c and elsewhere; there will be followups, but these are for the next cycle... Some pipe/splice-related cleanups from Miklos in the same branch as well" * 'work.splice_read' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: pipe: fix comment in pipe_buf_operations pipe: add pipe_buf_steal() helper pipe: add pipe_buf_confirm() helper pipe: add pipe_buf_release() helper pipe: add pipe_buf_get() helper relay: simplify relay_file_read() switch default_file_splice_read() to use of pipe-backed iov_iter switch generic_file_splice_read() to use of ->read_iter() new iov_iter flavour: pipe-backed fuse_dev_splice_read(): switch to add_to_pipe() skb_splice_bits(): get rid of callback new helper: add_to_pipe() splice: lift pipe_lock out of splice_to_pipe() splice: switch get_iovec_page_array() to iov_iter splice_to_pipe(): don't open-code wakeup_pipe_readers() consistent treatment of EFAULT on O_DIRECT read/write

pipe: add pipe_buf_steal() helper

2016-10-05T22:23:59Z

Signed-off-by: Miklos Szeredi Signed-off-by: Al Viro

pipe: add pipe_buf_confirm() helper

2016-10-05T22:23:59Z

Signed-off-by: Miklos Szeredi Signed-off-by: Al Viro

pipe: add pipe_buf_release() helper

2016-10-05T22:23:58Z

Signed-off-by: Miklos Szeredi Signed-off-by: Al Viro

pipe: add pipe_buf_get() helper

2016-10-05T22:23:57Z

Signed-off-by: Miklos Szeredi Signed-off-by: Al Viro

fuse_dev_splice_read(): switch to add_to_pipe()

2016-10-04T00:40:56Z

Signed-off-by: Al Viro

splice: lift pipe_lock out of splice_to_pipe()

2016-10-04T00:40:55Z

* splice_to_pipe() stops at pipe overflow and does *not* take pipe_lock * ->splice_read() instances do the same * vmsplice_to_pipe() and do_splice() (ultimate callers of splice_to_pipe()) arrange for waiting, looping, etc. themselves. That should make pipe_lock the outermost one. Unfortunately, existing rules for the amount passed by vmsplice_to_pipe() and do_splice() are quite ugly _and_ userland code can be easily broken by changing those. It's not even "no more than the maximal capacity of this pipe" - it's "once we'd fed pipe->nr_buffers pages into the pipe, leave instead of waiting". Considering how poorly these rules are documented, let's try "wait for some space to appear, unless given SPLICE_F_NONBLOCK, then push into pipe and if we run into overflow, we are done". Signed-off-by: Al Viro

fuse: remove duplicate cs->offset assignment

2016-10-01T05:32:33Z

Signed-off-by: Miklos Szeredi

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse

2016-07-29T19:29:15Z

Pull fuse updates from Miklos Szeredi: "This fixes error propagation from writeback to fsync/close for writeback cache mode as well as adding a missing capability flag to the INIT message. The rest are cleanups. (The commits are recent but all the code actually sat in -next for a while now. The recommits are due to conflict avoidance and the addition of Cc: stable@...)" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: fuse: use filemap_check_errors() mm: export filemap_check_errors() to modules fuse: fix wrong assignment of ->flags in fuse_send_init() fuse: fuse_flush must check mapping->flags for errors fuse: fsync() did not return IO errors fuse: don't mess with blocking signals new helper: wait_event_killable_exclusive() fuse: improve aio directIO write performance for size extending writes

fuse: don't mess with blocking signals

2016-07-19T07:08:27Z

just use wait_event_killable{,_exclusive}(). Signed-off-by: Al Viro