Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8ec680e4c3ec818efd1652f15199ed1c216ab550
Commit: 8ec680e4c3ec818efd1652f15199ed1c216ab550
Parent: 0e7be9edb9134f833278c381b6feabb54b875208
Author: Jens Axboe <[EMAIL PROTECTED]>
AuthorDate: Wed Nov 7 13:54:07 2007 +0100
Committer: Jens Axboe <[EMAIL PROTECTED]>
CommitDate: Wed Nov 7 13:54:07 2007 +0100
ioprio: allow sys_ioprio_set() value of 0 to reset ioprio setting
Normally io priorities follow the CPU nice, unless a specific scheduling
class has been set. Once that is set, there's no way to reset the
behaviour to 'none' so that it follows CPU nice again.
Currently passing in 0 as the ioprio class/value will return -1/EINVAL,
change that to allow resetting of a set scheduling class.
Signed-off-by: Jens Axboe <[EMAIL PROTECTED]>
---
fs/ioprio.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/fs/ioprio.c b/fs/ioprio.c
index d6ff77e..e4e01bc 100644
--- a/fs/ioprio.c
+++ b/fs/ioprio.c
@@ -78,6 +78,10 @@ asmlinkage long sys_ioprio_set(int which, int who, int
ioprio)
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
break;
+ case IOPRIO_CLASS_NONE:
+ if (data)
+ return -EINVAL;
+ break;
default:
return -EINVAL;
}
-
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