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authorJens Axboe <axboe@fb.com>2014-03-13 09:38:42 -0600
committerJens Axboe <axboe@fb.com>2014-03-13 09:38:42 -0600
commit89f8b33ca1ea881d1d84542282cb85d07d02e78d (patch)
treeaec73b5cbf9e2c1baed0ecaf03a2a2093df26b6f /kernel/sysctl.c
parentaf5040da01ef980670b3741b3e10733ee3e33566 (diff)
downloadlinux-89f8b33ca1ea881d1d84542282cb85d07d02e78d.tar.bz2
block: remove old blk_iopoll_enabled variable
This was a debugging measure to toggle enabled/disabled when testing. But for real production setups, it's not safe to toggle this setting without either reloading drivers of quiescing IO first. Neither of which the toggle enforces. Additionally, it makes drivers deal with the conditional state. Remove it completely. It's up to the driver whether iopoll is enabled or not. Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'kernel/sysctl.c')
-rw-r--r--kernel/sysctl.c12
1 files changed, 0 insertions, 12 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 49e13e1f8fe6..ef0bf04e8649 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -112,9 +112,6 @@ extern int sysctl_nr_open_min, sysctl_nr_open_max;
#ifndef CONFIG_MMU
extern int sysctl_nr_trim_pages;
#endif
-#ifdef CONFIG_BLOCK
-extern int blk_iopoll_enabled;
-#endif
/* Constants used for minimum and maximum */
#ifdef CONFIG_LOCKUP_DETECTOR
@@ -1094,15 +1091,6 @@ static struct ctl_table kern_table[] = {
.proc_handler = proc_dointvec,
},
#endif
-#ifdef CONFIG_BLOCK
- {
- .procname = "blk_iopoll",
- .data = &blk_iopoll_enabled,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
-#endif
{ }
};