From 962033d55d0761e0716a01a715c6659c8c8dfc41 Mon Sep 17 00:00:00 2001 From: Matthew Wilcox Date: Wed, 20 Feb 2019 11:51:22 -0500 Subject: XArray: Use xa_cmpxchg to implement xa_reserve Jason feels this is clearer, and it saves a function and an exported symbol. Suggested-by: Jason Gunthorpe Signed-off-by: Matthew Wilcox --- include/linux/xarray.h | 25 +++---------------------- 1 file changed, 3 insertions(+), 22 deletions(-) (limited to 'include/linux/xarray.h') diff --git a/include/linux/xarray.h b/include/linux/xarray.h index 588733abd19d..0e01e6129145 100644 --- a/include/linux/xarray.h +++ b/include/linux/xarray.h @@ -525,7 +525,6 @@ int __must_check __xa_alloc(struct xarray *, u32 *id, void *entry, struct xa_limit, gfp_t); int __must_check __xa_alloc_cyclic(struct xarray *, u32 *id, void *entry, struct xa_limit, u32 *next, gfp_t); -int __must_check __xa_reserve(struct xarray *, unsigned long index, gfp_t); void __xa_set_mark(struct xarray *, unsigned long index, xa_mark_t); void __xa_clear_mark(struct xarray *, unsigned long index, xa_mark_t); @@ -1004,13 +1003,7 @@ static inline int xa_alloc_cyclic_irq(struct xarray *xa, u32 *id, void *entry, static inline __must_check int xa_reserve(struct xarray *xa, unsigned long index, gfp_t gfp) { - int ret; - - xa_lock(xa); - ret = __xa_reserve(xa, index, gfp); - xa_unlock(xa); - - return ret; + return xa_err(xa_cmpxchg(xa, index, NULL, XA_ZERO_ENTRY, gfp)); } /** @@ -1028,13 +1021,7 @@ int xa_reserve(struct xarray *xa, unsigned long index, gfp_t gfp) static inline __must_check int xa_reserve_bh(struct xarray *xa, unsigned long index, gfp_t gfp) { - int ret; - - xa_lock_bh(xa); - ret = __xa_reserve(xa, index, gfp); - xa_unlock_bh(xa); - - return ret; + return xa_err(xa_cmpxchg_bh(xa, index, NULL, XA_ZERO_ENTRY, gfp)); } /** @@ -1052,13 +1039,7 @@ int xa_reserve_bh(struct xarray *xa, unsigned long index, gfp_t gfp) static inline __must_check int xa_reserve_irq(struct xarray *xa, unsigned long index, gfp_t gfp) { - int ret; - - xa_lock_irq(xa); - ret = __xa_reserve(xa, index, gfp); - xa_unlock_irq(xa); - - return ret; + return xa_err(xa_cmpxchg_irq(xa, index, NULL, XA_ZERO_ENTRY, gfp)); } /** -- cgit