| Message ID | 20151215154009.32186.82776.stgit@localhost.localdomain (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/fs/fcntl.c b/fs/fcntl.c index ee85cd4..350a2c8 100644 --- a/fs/fcntl.c +++ b/fs/fcntl.c @@ -51,7 +51,8 @@ static int setfl(int fd, struct file * filp, unsigned long arg) if (arg & O_NDELAY) arg |= O_NONBLOCK; - if (arg & O_DIRECT) { + /* Pipe packetized mode is controlled by O_DIRECT flag */ + if (!S_ISFIFO(filp->f_inode->i_mode) && (arg & O_DIRECT)) { if (!filp->f_mapping || !filp->f_mapping->a_ops || !filp->f_mapping->a_ops->direct_IO) return -EINVAL;
With packetized mode for pipes, it's not possible to set O_DIRECT on pipe file via sys_fcntl, because of unsupported sanity checks. Ability to set this flag will be used by CRIU to migrate packetized pipes. v2: Fixed typos and mode variable to check. Signed-off-by: Stanislav Kinsburskiy <skinsbursky@virtuozzo.com> --- fs/fcntl.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html