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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2020-01-17 12:36:32 -0500 |
|---|---|---|
| committer | Matthew Wilcox (Oracle) <willy@infradead.org> | 2020-01-17 22:32:17 -0500 |
| commit | 82a958497dc9120e0e8043da82273baedd255aaf (patch) | |
| tree | 50544f7944467f664903075d28f8dd6d4153c34a /include | |
| parent | 6b81141deb7358dbd64ce3e793cd1e3f5939f807 (diff) | |
| download | linux-82a958497dc9120e0e8043da82273baedd255aaf.tar.bz2 | |
XArray: Add wrappers for nested spinlocks
Some users need to take an xarray lock while holding another xarray lock.
Reported-by: Doug Gilbert <dgilbert@interlog.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/xarray.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/xarray.h b/include/linux/xarray.h index 86eecbd98e84..736afd3aa56f 100644 --- a/include/linux/xarray.h +++ b/include/linux/xarray.h @@ -508,6 +508,14 @@ static inline bool xa_marked(const struct xarray *xa, xa_mark_t mark) spin_lock_irqsave(&(xa)->xa_lock, flags) #define xa_unlock_irqrestore(xa, flags) \ spin_unlock_irqrestore(&(xa)->xa_lock, flags) +#define xa_lock_nested(xa, subclass) \ + spin_lock_nested(&(xa)->xa_lock, subclass) +#define xa_lock_bh_nested(xa, subclass) \ + spin_lock_bh_nested(&(xa)->xa_lock, subclass) +#define xa_lock_irq_nested(xa, subclass) \ + spin_lock_irq_nested(&(xa)->xa_lock, subclass) +#define xa_lock_irqsave_nested(xa, flags, subclass) \ + spin_lock_irqsave_nested(&(xa)->xa_lock, flags, subclass) /* * Versions of the normal API which require the caller to hold the |