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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