From: David Howells <dhowells@redhat.com> To: Linus Torvalds <torvalds@linux-foundation.org> Cc: dhowells@redhat.com, Karel Zak <kzak@redhat.com>, Al Viro <viro@zeniv.linux.org.uk>, dray@redhat.com, Miklos Szeredi <mszeredi@redhat.com>, Steven Whitehouse <swhiteho@redhat.com>, Jeff Layton <jlayton@redhat.com>, Ian Kent <raven@themaw.net>, andres@anarazel.de, Christian Brauner <christian.brauner@ubuntu.com>, Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>, keyrings@vger.kernel.org, linux-fsdevel <linux-fsdevel@vger.kernel.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org> Subject: Re: [GIT PULL] General notification queue and key notifications Date: Sat, 13 Jun 2020 13:04:52 +0000 [thread overview] Message-ID: <3984625.1592053492@warthog.procyon.org.uk> (raw) In-Reply-To: <CAHk-=whypJLi6T01HOZ5+UPe_rs+hft8wn6iOmQpZgbZzbAumA@mail.gmail.com> Linus Torvalds <torvalds@linux-foundation.org> wrote: > I'm not even convinced O_NOTIFICATION_PIPE is necessary, but at worst > it will be a useful marker. I think the only real reason for it was to > avoid any clashes with splice(), which has more complex use of the > pipe buffers. The main reason is to prevent splice because the iov_iter rewind for splice gets quite tricky if the kernel can randomly insert packets into the pipe buffer in between what splice is inserting. > I'm so far just reading this thread and the arguments for users, and I > haven't yet looked at all the actual details in the pull request - but > last time I had objections to things it wasn't the code, it was the > lack of any use. Would you be willing at this point to consider pulling the mount notifications and fsinfo() which helps support that? I could whip up pull reqs for those two pieces - or do you want to see more concrete patches that use it? David
WARNING: multiple messages have this Message-ID (diff)
From: David Howells <dhowells@redhat.com> To: Linus Torvalds <torvalds@linux-foundation.org> Cc: dhowells@redhat.com, Karel Zak <kzak@redhat.com>, Al Viro <viro@zeniv.linux.org.uk>, dray@redhat.com, Miklos Szeredi <mszeredi@redhat.com>, Steven Whitehouse <swhiteho@redhat.com>, Jeff Layton <jlayton@redhat.com>, Ian Kent <raven@themaw.net>, andres@anarazel.de, Christian Brauner <christian.brauner@ubuntu.com>, Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>, keyrings@vger.kernel.org, linux-fsdevel <linux-fsdevel@vger.kernel.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org> Subject: Re: [GIT PULL] General notification queue and key notifications Date: Sat, 13 Jun 2020 14:04:52 +0100 [thread overview] Message-ID: <3984625.1592053492@warthog.procyon.org.uk> (raw) In-Reply-To: <CAHk-=whypJLi6T01HOZ5+UPe_rs+hft8wn6iOmQpZgbZzbAumA@mail.gmail.com> Linus Torvalds <torvalds@linux-foundation.org> wrote: > I'm not even convinced O_NOTIFICATION_PIPE is necessary, but at worst > it will be a useful marker. I think the only real reason for it was to > avoid any clashes with splice(), which has more complex use of the > pipe buffers. The main reason is to prevent splice because the iov_iter rewind for splice gets quite tricky if the kernel can randomly insert packets into the pipe buffer in between what splice is inserting. > I'm so far just reading this thread and the arguments for users, and I > haven't yet looked at all the actual details in the pull request - but > last time I had objections to things it wasn't the code, it was the > lack of any use. Would you be willing at this point to consider pulling the mount notifications and fsinfo() which helps support that? I could whip up pull reqs for those two pieces - or do you want to see more concrete patches that use it? David
next prev parent reply other threads:[~2020-06-13 13:04 UTC|newest] Thread overview: 203+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-03-30 13:58 Upcoming: Notifications, FS notifications and fsinfo() David Howells 2020-03-30 13:58 ` David Howells 2020-03-30 14:31 ` [GIT PULL] General notification queue and key notifications David Howells 2020-03-30 14:31 ` David Howells 2020-03-31 6:51 ` Stephen Rothwell 2020-03-31 6:51 ` Stephen Rothwell 2020-06-02 15:55 ` David Howells 2020-06-02 15:55 ` David Howells 2020-06-03 2:15 ` Ian Kent 2020-06-03 2:15 ` Ian Kent 2020-06-08 0:49 ` Ian Kent 2020-06-08 0:49 ` Ian Kent 2020-06-10 9:56 ` Christian Brauner 2020-06-10 9:56 ` Christian Brauner 2020-06-10 11:12 ` Karel Zak 2020-06-10 11:12 ` Karel Zak 2020-06-12 21:32 ` Linus Torvalds 2020-06-12 21:32 ` Linus Torvalds 2020-06-12 22:01 ` Linus Torvalds 2020-06-12 22:01 ` Linus Torvalds 2020-06-13 13:04 ` David Howells [this message] 2020-06-13 13:04 ` David Howells 2020-06-13 16:47 ` Linus Torvalds 2020-06-13 16:47 ` Linus Torvalds 2020-06-13 17:03 ` Linus Torvalds 2020-06-13 17:03 ` Linus Torvalds 2020-06-13 19:22 ` Miklos Szeredi 2020-06-13 19:22 ` Miklos Szeredi 2020-06-13 13:24 ` David Howells 2020-06-13 13:24 ` David Howells 2020-06-13 18:00 ` pr-tracker-bot 2020-06-13 18:00 ` pr-tracker-bot 2020-06-17 1:15 ` Williams, Dan J 2020-06-17 1:15 ` Williams, Dan J 2020-06-17 1:15 ` Williams, Dan J 2020-06-23 23:38 ` Dan Williams 2020-06-23 23:38 ` Dan Williams 2020-06-23 23:38 ` Dan Williams 2020-06-24 0:55 ` David Howells 2020-06-24 0:55 ` David Howells 2020-06-24 0:55 ` David Howells 2020-06-24 1:03 ` Dan Williams 2020-06-24 1:03 ` Dan Williams 2020-06-24 1:03 ` Dan Williams 2020-06-24 1:17 ` David Howells 2020-06-24 1:17 ` David Howells 2020-06-24 1:17 ` David Howells 2020-03-30 14:36 ` [GIT PULL] Mount and superblock notifications David Howells 2020-03-30 14:36 ` David Howells 2020-04-04 21:13 ` Linus Torvalds 2020-04-04 21:13 ` Linus Torvalds 2020-04-05 22:52 ` Andres Freund 2020-04-05 22:52 ` Andres Freund 2020-03-30 14:43 ` [GIT PULL] fsinfo: Filesystem information query David Howells 2020-03-30 14:43 ` David Howells 2020-03-30 20:28 ` Upcoming: Notifications, FS notifications and fsinfo() Miklos Szeredi 2020-03-30 20:28 ` Miklos Szeredi 2020-03-31 9:21 ` Karel Zak 2020-03-31 9:21 ` Karel Zak 2020-03-30 21:17 ` Christian Brauner 2020-03-30 21:17 ` Christian Brauner 2020-03-31 5:11 ` Miklos Szeredi 2020-03-31 5:11 ` Miklos Szeredi 2020-03-31 8:15 ` Christian Brauner 2020-03-31 8:15 ` Christian Brauner 2020-03-31 8:34 ` Miklos Szeredi 2020-03-31 8:34 ` Miklos Szeredi 2020-03-31 8:34 ` Karel Zak 2020-03-31 8:34 ` Karel Zak 2020-03-31 8:56 ` Miklos Szeredi 2020-03-31 8:56 ` Miklos Szeredi 2020-03-31 9:49 ` Karel Zak 2020-03-31 9:49 ` Karel Zak 2020-03-31 12:25 ` Lennart Poettering 2020-03-31 12:25 ` Lennart Poettering 2020-03-31 15:10 ` Miklos Szeredi 2020-03-31 15:10 ` Miklos Szeredi 2020-03-31 15:24 ` Lennart Poettering 2020-03-31 15:24 ` Lennart Poettering 2020-03-31 21:56 ` David Howells 2020-03-31 21:56 ` David Howells 2020-03-31 21:54 ` David Howells 2020-03-31 21:54 ` David Howells 2020-04-01 8:43 ` Karel Zak 2020-04-01 8:43 ` Karel Zak 2020-03-31 7:22 ` Lennart Poettering 2020-03-31 7:22 ` Lennart Poettering 2020-03-31 17:31 ` David Howells 2020-03-31 17:31 ` David Howells 2020-03-31 19:42 ` Miklos Szeredi 2020-03-31 19:42 ` Miklos Szeredi 2020-03-31 19:47 ` David Howells 2020-03-31 19:47 ` David Howells 2020-03-31 21:14 ` David Howells 2020-03-31 21:14 ` David Howells 2020-03-31 21:23 ` David Howells 2020-03-31 21:23 ` David Howells 2020-03-31 21:52 ` David Howells 2020-03-31 21:52 ` David Howells 2020-04-01 9:04 ` Karel Zak 2020-04-01 9:04 ` Karel Zak 2020-04-01 13:34 ` Miklos Szeredi 2020-04-01 13:34 ` Miklos Szeredi 2020-04-01 13:55 ` David Howells 2020-04-01 13:55 ` David Howells 2020-04-01 13:58 ` David Howells 2020-04-01 13:58 ` David Howells 2020-04-01 15:25 ` Miklos Szeredi 2020-04-01 15:25 ` Miklos Szeredi 2020-04-03 9:11 ` Karel Zak 2020-04-03 9:11 ` Karel Zak 2020-04-01 16:01 ` David Howells 2020-04-01 16:01 ` David Howells 2020-04-01 16:30 ` Miklos Szeredi 2020-04-01 16:30 ` Miklos Szeredi 2020-04-02 15:22 ` David Howells 2020-04-02 15:22 ` David Howells 2020-04-02 15:24 ` Miklos Szeredi 2020-04-02 15:24 ` Miklos Szeredi 2020-04-02 15:42 ` David Howells 2020-04-02 15:42 ` David Howells 2020-04-02 15:24 ` David Howells 2020-04-02 15:24 ` David Howells 2020-04-01 14:41 ` Lennart Poettering 2020-04-01 14:41 ` Lennart Poettering 2020-04-01 15:33 ` Miklos Szeredi 2020-04-01 15:33 ` Miklos Szeredi 2020-04-01 16:06 ` David Howells 2020-04-01 16:06 ` David Howells 2020-04-01 16:40 ` Miklos Szeredi 2020-04-01 16:40 ` Miklos Szeredi 2020-04-02 2:52 ` Ian Kent 2020-04-02 2:52 ` Ian Kent 2020-04-02 13:52 ` Miklos Szeredi 2020-04-02 13:52 ` Miklos Szeredi 2020-04-02 14:36 ` Lennart Poettering 2020-04-02 14:36 ` Lennart Poettering 2020-04-02 15:22 ` Miklos Szeredi 2020-04-02 15:22 ` Miklos Szeredi 2020-04-02 15:28 ` Lennart Poettering 2020-04-02 15:28 ` Lennart Poettering 2020-04-02 15:35 ` Miklos Szeredi 2020-04-02 15:35 ` Miklos Szeredi 2020-04-02 15:50 ` Lennart Poettering 2020-04-02 15:50 ` Lennart Poettering 2020-04-02 17:20 ` Miklos Szeredi 2020-04-02 17:20 ` Miklos Szeredi 2020-04-03 11:08 ` Lennart Poettering 2020-04-03 11:08 ` Lennart Poettering 2020-04-03 11:48 ` Miklos Szeredi 2020-04-03 11:48 ` Miklos Szeredi 2020-04-03 15:01 ` Lennart Poettering 2020-04-03 15:01 ` Lennart Poettering 2020-04-06 9:22 ` Miklos Szeredi 2020-04-06 9:22 ` Miklos Szeredi 2020-04-06 17:29 ` Lennart Poettering 2020-04-06 17:29 ` Lennart Poettering 2020-04-07 2:21 ` Ian Kent 2020-04-07 2:21 ` Ian Kent 2020-04-07 13:59 ` Miklos Szeredi 2020-04-07 13:59 ` Miklos Szeredi 2020-04-07 15:53 ` Lennart Poettering 2020-04-07 15:53 ` Lennart Poettering 2020-04-07 16:06 ` Miklos Szeredi 2020-04-07 16:06 ` Miklos Szeredi 2020-04-02 15:51 ` David Howells 2020-04-02 15:51 ` David Howells 2020-04-02 15:56 ` David Howells 2020-04-02 15:56 ` David Howells 2020-04-03 1:44 ` Ian Kent 2020-04-03 1:44 ` Ian Kent 2020-04-03 11:11 ` Lennart Poettering 2020-04-03 11:11 ` Lennart Poettering 2020-04-03 11:38 ` Miklos Szeredi 2020-04-03 11:38 ` Miklos Szeredi 2020-04-03 12:05 ` Richard Weinberger 2020-04-03 12:05 ` Richard Weinberger 2020-04-03 15:12 ` Lennart Poettering 2020-04-03 15:12 ` Lennart Poettering 2020-04-03 20:30 ` J. Bruce Fields 2020-04-03 20:30 ` J. Bruce Fields 2020-04-06 8:35 ` Miklos Szeredi 2020-04-06 8:35 ` Miklos Szeredi 2020-04-06 16:07 ` J. Bruce Fields 2020-04-06 16:07 ` J. Bruce Fields 2020-04-06 9:17 ` Karel Zak 2020-04-06 9:17 ` Karel Zak 2020-04-06 16:34 ` Linus Torvalds 2020-04-06 16:34 ` Linus Torvalds 2020-04-06 18:46 ` J. Bruce Fields 2020-04-06 18:46 ` J. Bruce Fields 2020-04-06 18:48 ` Lennart Poettering 2020-04-06 18:48 ` Lennart Poettering 2020-04-08 3:36 ` Linus Torvalds 2020-04-08 3:36 ` Linus Torvalds 2020-04-03 15:36 ` David Howells 2020-04-03 15:36 ` David Howells 2020-04-03 15:41 ` Lennart Poettering 2020-04-03 15:41 ` Lennart Poettering 2020-06-02 15:51 [GIT PULL] General notification queue and key notifications David Howells 2020-06-02 15:51 ` David Howells 2020-06-02 15:54 ` David Howells 2020-06-02 15:54 ` David Howells
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