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| author | Mark Brown <broonie@kernel.org> | 2019-06-18 19:12:47 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-06-18 19:12:47 +0100 |
| commit | e1d700f7c94e755106749411706a38e39a93404b (patch) | |
| tree | b1230cb7eba5a4ef28ed2cd2527d9ac78f06cc00 /lib/lockref.c | |
| parent | ba576a6232dc06605f4edfaeea9b526ba7724f84 (diff) | |
| parent | d1fdb6d8f6a4109a4263176c84b899076a5f8008 (diff) | |
| download | talos-op-linux-e1d700f7c94e755106749411706a38e39a93404b.tar.gz talos-op-linux-e1d700f7c94e755106749411706a38e39a93404b.zip | |
Merge tag 'v5.2-rc4' into regulator-5.3
Linux 5.2-rc4
Diffstat (limited to 'lib/lockref.c')
| -rw-r--r-- | lib/lockref.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/lockref.c b/lib/lockref.c index 3d468b53d4c9..5b34bbd3eba8 100644 --- a/lib/lockref.c +++ b/lib/lockref.c @@ -9,6 +9,7 @@ * failure case. */ #define CMPXCHG_LOOP(CODE, SUCCESS) do { \ + int retry = 100; \ struct lockref old; \ BUILD_BUG_ON(sizeof(old) != 8); \ old.lock_count = READ_ONCE(lockref->lock_count); \ @@ -21,6 +22,8 @@ if (likely(old.lock_count == prev.lock_count)) { \ SUCCESS; \ } \ + if (!--retry) \ + break; \ cpu_relax(); \ } \ } while (0) |
