JFYI: i've dropped the patch. First of all - patch is buggy, second - packed pipes are still not used and may be buggy => let it be as is, meant - disabled by default.
-- Best regards, Konstantin Khorenko, Virtuozzo Linux Kernel Team On 01/14/2016 04:46 PM, Konstantin Khorenko wrote:
The commit is pushed to "branch-rh7-3.10.0-229.7.2.vz7.9.x-ovz" and will appear at https://src.openvz.org/scm/ovz/vzkernel.git after rh7-3.10.0-229.7.2.vz7.9.20 ------> commit e040b001d2f532d17e2121bad184f987e84561a6 Author: Stanislav Kinsburskiy <skinsbur...@virtuozzo.com> Date: Thu Jan 14 17:46:03 2016 +0400 ve/fs/fcntl: allow pipes with O_DIRECT regardless "odirect_enable" status This flag represents packetized mode for pipes, which only changes how pipe holds packets, and shouldn't be affected by "odirect_enable" toggle. Signed-off-by: Stanislav Kinsburskiy <skinsbur...@virtuozzo.com> Reviewed-by: Kirill Tkhai <ktk...@virtuozzo.com> --- fs/fcntl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/fcntl.c b/fs/fcntl.c index cfa349c..1df1ffa 100644 --- a/fs/fcntl.c +++ b/fs/fcntl.c @@ -70,7 +70,7 @@ static int setfl(int fd, struct file * filp, unsigned long arg) struct inode * inode = file_inode(filp); int error = 0; - if (!may_use_odirect()) + if (!S_ISFIFO(filp->f_mode) && !may_use_odirect(filp)) arg &= ~O_DIRECT; if (ve_fsync_behavior() == FSYNC_NEVER) arg &= ~O_SYNC;
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