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| author | Jens Axboe <jens.axboe@oracle.com> | 2009-09-15 21:53:11 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-09-15 21:53:11 +0200 |
| commit | cb684b5bcd6a79ae7e2360c6b158c4aa7b0a293a (patch) | |
| tree | f6bccc81c1d4405873b5b936d1a7c12bc60a9f82 | |
| parent | 18240904960a39e582ced8ba8ececb10b8c22dd3 (diff) | |
block: fix linkage problem with blk_iopoll and !CONFIG_BLOCK
kernel/built-in.o:(.data+0x17b0): undefined reference to `blk_iopoll_enabled'
Since the extern declaration makes the compile work, but the actual
symbol is missing when block/blk-iopoll.o isn't linked in.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| -rw-r--r-- | kernel/sysctl.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 6bb59f70740..1a631ba684a 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -91,7 +91,9 @@ extern int sysctl_nr_trim_pages; #ifdef CONFIG_RCU_TORTURE_TEST extern int rcutorture_runnable; #endif /* #ifdef CONFIG_RCU_TORTURE_TEST */ +#ifdef CONFIG_BLOCK extern int blk_iopoll_enabled; +#endif /* Constants used for minimum and maximum */ #ifdef CONFIG_DETECT_SOFTLOCKUP @@ -998,6 +1000,7 @@ static struct ctl_table kern_table[] = { .proc_handler = &proc_dointvec, }, #endif +#ifdef CONFIG_BLOCK { .ctl_name = CTL_UNNUMBERED, .procname = "blk_iopoll", @@ -1006,6 +1009,7 @@ static struct ctl_table kern_table[] = { .mode = 0644, .proc_handler = &proc_dointvec, }, +#endif /* * NOTE: do not add new entries to this table unless you have read * Documentation/sysctl/ctl_unnumbered.txt |