Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=cae7ca3d3de48851e929de9469397749638df779
Commit: cae7ca3d3de48851e929de9469397749638df779
Parent: 7f353bf29e162459f2f1e2ca25e41011fae65241
Author: Heiko Carstens <[EMAIL PROTECTED]>
AuthorDate: Fri Aug 10 15:50:30 2007 -0700
Committer: David S. Miller <[EMAIL PROTECTED]>
CommitDate: Mon Aug 13 22:52:15 2007 -0700
[IPVS]: Use IP_VS_WAIT_WHILE when encessary.
For architectures that don't have a volatile atomic_ts constructs like
while (atomic_read(&something)); might result in endless loops since a
barrier() is missing which forces the compiler to generate code that
actually reads memory contents.
Fix this in ipvs by using the IP_VS_WAIT_WHILE macro which resolves to
while (expr) { cpu_relax(); }
(why isn't this open coded btw?)
Signed-off-by: Heiko Carstens <[EMAIL PROTECTED]>
Signed-off-by: Simon Horman <[EMAIL PROTECTED]>
Signed-off-by: David S. Miller <[EMAIL PROTECTED]>
---
net/ipv4/ipvs/ip_vs_ctl.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/net/ipv4/ipvs/ip_vs_ctl.c b/net/ipv4/ipvs/ip_vs_ctl.c
index c32781d..902fd57 100644
--- a/net/ipv4/ipvs/ip_vs_ctl.c
+++ b/net/ipv4/ipvs/ip_vs_ctl.c
@@ -908,7 +908,7 @@ ip_vs_edit_dest(struct ip_vs_service *svc, struct
ip_vs_dest_user *udest)
write_lock_bh(&__ip_vs_svc_lock);
/* Wait until all other svc users go away */
- while (atomic_read(&svc->usecnt) > 1) {};
+ IP_VS_WAIT_WHILE(atomic_read(&svc->usecnt) > 1);
/* call the update_service, because server weight may be changed */
svc->scheduler->update_service(svc);
-
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