search for: splice_read

Provide a splice_read stub for ocfs2. This emits trace lines and does an atime lock/update before calling filemap_splice_read(). Splicing from direct I/O is handled by the caller. A couple of new tracepoints are added for this purpose. Signed-off-by: David Howells <dhowells at redhat.com> cc: Christoph Hellwig...

Provide a splice_read stub for ocfs2. This emits trace lines and does an atime lock/update before calling filemap_splice_read(). It doesn't do this for around direct_splice_read() as that will call ->read_iter(). A couple of new tracepoints are added for this purpose. Signed-off-by: David Howells <dhowells...

...non-blocking mode in QEMU Thank you, --- Masami Hiramatsu (2): trace-cmd: Use tracing directory to count CPUs trace-cmd: Use TRACE_DIR envrionment variable if defined Yoshihiro YUNOMAE (3): trace-cmd: Use polling function trace-cmd: Add non-blocking option for open() and splice_read() trace-cmd: Support trace-agent of virtio-trace trace-cmd.h | 1 trace-record.c | 41 ++++++++++++++++++++ trace-recorder.c | 112 ++++++++++++++++++++++++++++++++++++++++++++++++------ trace-util.c | 27 +++++++++++++ 4 files changed, 169 insertions(+), 12 deletions(-...

...non-blocking mode in QEMU Thank you, --- Masami Hiramatsu (2): trace-cmd: Use tracing directory to count CPUs trace-cmd: Use TRACE_DIR envrionment variable if defined Yoshihiro YUNOMAE (3): trace-cmd: Use polling function trace-cmd: Add non-blocking option for open() and splice_read() trace-cmd: Support trace-agent of virtio-trace trace-cmd.h | 1 trace-record.c | 41 ++++++++++++++++++++ trace-recorder.c | 112 ++++++++++++++++++++++++++++++++++++++++++++++++------ trace-util.c | 27 +++++++++++++ 4 files changed, 169 insertions(+), 12 deletions(-...

...fs/btrfs/file.c @@ -1197,6 +1197,7 @@ static int btrfs_file_mmap(struct file *filp, struct vm_area_struct *vma) const struct file_operations btrfs_file_operations = { .llseek = generic_file_llseek, .read = do_sync_read, + .write = do_sync_write, .aio_read = generic_file_aio_read, .splice_read = generic_file_splice_read, .aio_write = btrfs_file_aio_write, -- 1.6.5.2 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Add pipe_lock/unlock for splice_write to avoid oops by following competition: (1) An application gets fds of a trace buffer, virtio-serial, pipe. (2) The application does fork() (3) The processes execute splice_read(trace buffer) and splice_write(virtio-serial) via same pipe. <parent> <child> get fds of a trace buffer, virtio-serial, pipe | fork()----------create--------+ | | splice(read)...

...compat_ioctl = compat_ptr_ioctl, .fsync = ceph_fsync, .lock = ceph_lock, .flock = ceph_flock, diff --git a/fs/ceph/file.c b/fs/ceph/file.c index 99712b6b1ad5..676e5aed7a58 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -2138,7 +2138,7 @@ const struct file_operations ceph_file_fops = { .splice_read = generic_file_splice_read, .splice_write = iter_file_splice_write, .unlocked_ioctl = ceph_ioctl, - .compat_ioctl = ceph_compat_ioctl, + .compat_ioctl = compat_ptr_ioctl, .fallocate = ceph_fallocate, .copy_file_range = ceph_copy_file_range, }; diff --git a/fs/ceph/super.h b/fs/ceph/super.h...

Hi, This patch set fixes two bugs of splice_write in the virtio-console driver. [BUG1] Although pipe->nrbufs is empty, the driver tries to do splice_write. => This induces oops in sg_init_table(). [BUG2] No lock for competition of splice_write. => This induces oops in splice_from_pipe_feed() by bug of any user application. These reports are written in each

Hi, This patch set fixes two bugs of splice_write in the virtio-console driver. [BUG1] Although pipe->nrbufs is empty, the driver tries to do splice_write. => This induces oops in sg_init_table(). [BUG2] No lock for competition of splice_write. => This induces oops in splice_from_pipe_feed() by bug of any user application. These reports are written in each

...has_rx_data(sk) && vhost_vq_avail_empty(&net->dev, vq)) cpu_relax_lowlatency(); diff --git a/include/linux/net.h b/include/linux/net.h index 9aa49a0..b6b3843 100644 --- a/include/linux/net.h +++ b/include/linux/net.h @@ -185,6 +185,7 @@ struct proto_ops { ssize_t (*splice_read)(struct socket *sock, loff_t *ppos, struct pipe_inode_info *pipe, size_t len, unsigned int flags); int (*set_peek_off)(struct sock *sk, int val); + int (*peek_len)(struct socket *sock); }; #define DECLARE_SOCKADDR(type, dst, src) \ -- 2.7.4

...st_vq_avail_empty(&net->dev, vq)) > cpu_relax_lowlatency(); > > diff --git a/include/linux/net.h b/include/linux/net.h > index 9aa49a0..b6b3843 100644 > --- a/include/linux/net.h > +++ b/include/linux/net.h > @@ -185,6 +185,7 @@ struct proto_ops { > ssize_t (*splice_read)(struct socket *sock, loff_t *ppos, > struct pipe_inode_info *pipe, size_t len, unsigned int flags); > int (*set_peek_off)(struct sock *sk, int val); > + int (*peek_len)(struct socket *sock); > }; > > #define DECLARE_SOCKADDR(type, dst, src) \ > diff --git...

Signed-off-by: Tiger Yang <tiger.yang at oracle.com> --- Config.make.in | 1 + configure.in | 6 ++++++ fs/ocfs2/Makefile | 4 ++++ kapi-compat/include/pipe_buf_operations.h | 10 ++++++++++ 4 files changed, 21 insertions(+), 0 deletions(-) create mode 100644 kapi-compat/include/pipe_buf_operations.h

...has_rx_data(sk) && vhost_vq_avail_empty(&net->dev, vq)) cpu_relax_lowlatency(); diff --git a/include/linux/net.h b/include/linux/net.h index 9aa49a0..b6b3843 100644 --- a/include/linux/net.h +++ b/include/linux/net.h @@ -185,6 +185,7 @@ struct proto_ops { ssize_t (*splice_read)(struct socket *sock, loff_t *ppos, struct pipe_inode_info *pipe, size_t len, unsigned int flags); int (*set_peek_off)(struct sock *sk, int val); + int (*peek_len)(struct socket *sock); }; #define DECLARE_SOCKADDR(type, dst, src) \ diff --git a/include/uapi/linux/if_tun.h b/inc...

...has_rx_data(sk) && vhost_vq_avail_empty(&net->dev, vq)) cpu_relax_lowlatency(); diff --git a/include/linux/net.h b/include/linux/net.h index 9aa49a0..b6b3843 100644 --- a/include/linux/net.h +++ b/include/linux/net.h @@ -185,6 +185,7 @@ struct proto_ops { ssize_t (*splice_read)(struct socket *sock, loff_t *ppos, struct pipe_inode_info *pipe, size_t len, unsigned int flags); int (*set_peek_off)(struct sock *sk, int val); + int (*peek_len)(struct socket *sock); }; #define DECLARE_SOCKADDR(type, dst, src) \ diff --git a/include/uapi/linux/if_tun.h b/inc...

Hi, This patch set fixes two bugs of splice_write in the virtio-console driver. [BUG1] Although pipe->nrbufs is empty, the driver tries to do splice_write. => This induces oops in sg_init_table(). [BUG2] No lock for competition of splice_write. => This induces oops in splice_from_pipe_feed() by bug of any user application. These reports are written in each

Hi, This patch set fixes two bugs of splice_write in the virtio-console driver. [BUG1] Although pipe->nrbufs is empty, the driver tries to do splice_write. => This induces oops in sg_init_table(). [BUG2] No lock for competition of splice_write. => This induces oops in splice_from_pipe_feed() by bug of any user application. These reports are written in each

...,7 @@ const struct file_operations fat_file_operations = { .mmap = generic_file_mmap, .release = fat_file_release, .unlocked_ioctl = fat_generic_ioctl, -#ifdef CONFIG_COMPAT - .compat_ioctl = fat_generic_compat_ioctl, -#endif + .compat_ioctl = compat_ptr_ioctl, .fsync = fat_file_fsync, .splice_read = generic_file_splice_read, .splice_write = iter_file_splice_write, -- 2.20.0

...,7 @@ const struct file_operations fat_file_operations = { .mmap = generic_file_mmap, .release = fat_file_release, .unlocked_ioctl = fat_generic_ioctl, -#ifdef CONFIG_COMPAT - .compat_ioctl = fat_generic_compat_ioctl, -#endif + .compat_ioctl = compat_ptr_ioctl, .fsync = fat_file_fsync, .splice_read = generic_file_splice_read, .splice_write = iter_file_splice_write, -- 2.20.0

We're currently support two paths from VFS to preallocate unwritten extents(from FS_IOC_RESVSP, or fallocate()), likewise, behavior of punching-hole should be treated as the same, this patch tries to teach file_ioctl() to handle FS_IOC_UNRESVSP, underlying filesystem like ocfs2 is wise enough to do the rest of work;-) Signed-off-by: Tristan Ye <tristan.ye at oracle.com> --- fs/ioctl.c

We're currently support two paths from VFS to preallocate unwritten extents(from FS_IOC_RESVSP, or fallocate()), likewise, behavior of punching-hole should be treated as the same, this patch tries to teach file_ioctl() to handle FS_IOC_UNRESVSP, underlying filesystem like ocfs2 is wise enough to do the rest of work;-) Signed-off-by: Tristan Ye <tristan.ye at oracle.com> --- fs/ioctl.c