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| author | Matthew Wilcox <willy@linux.intel.com> | 2016-05-20 17:03:01 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-20 17:58:30 -0700 |
| commit | b76ba4af4ddd6a06f7f65769e7be1bc56556cdf5 (patch) | |
| tree | d7e4d94f0cc2e3c224949de671f2513fff0680db /drivers/hwspinlock/hwspinlock_core.c | |
| parent | 6b053b8e5f5e12089fbbc127167199746bb5b4c1 (diff) | |
| download | linux-b76ba4af4ddd6a06f7f65769e7be1bc56556cdf5.tar.gz linux-b76ba4af4ddd6a06f7f65769e7be1bc56556cdf5.tar.bz2 linux-b76ba4af4ddd6a06f7f65769e7be1bc56556cdf5.zip | |
drivers/hwspinlock: use correct radix tree API
radix_tree_is_indirect_ptr() is an internal API. The correct call to
use is radix_tree_deref_retry() which has the appropriate unlikely()
annotation.
Fixes: c6400ba7e13a ("drivers/hwspinlock: fix race between radix tree insertion and lookup")
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Kirill Shutemov <kirill.shutemov@linux.intel.com>
Cc: Jan Kara <jack@suse.com>
Cc: Neil Brown <neilb@suse.de>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/hwspinlock/hwspinlock_core.c')
| -rw-r--r-- | drivers/hwspinlock/hwspinlock_core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/hwspinlock/hwspinlock_core.c b/drivers/hwspinlock/hwspinlock_core.c index d50c701b19d6..4074441444fe 100644 --- a/drivers/hwspinlock/hwspinlock_core.c +++ b/drivers/hwspinlock/hwspinlock_core.c @@ -313,7 +313,7 @@ int of_hwspin_lock_get_id(struct device_node *np, int index) hwlock = radix_tree_deref_slot(slot); if (unlikely(!hwlock)) continue; - if (radix_tree_is_indirect_ptr(hwlock)) { + if (radix_tree_deref_retry(hwlock)) { slot = radix_tree_iter_retry(&iter); continue; } |