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XArray: Unify xa_store and __xa_store
Saves around 115 bytes on a tinyconfig build and reduces the amount of code duplication in the XArray implementation. Signed-off-by: Matthew Wilcox <willy@infradead.org>
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parent
84e5acb76d
commit
611f318637
66
lib/xarray.c
66
lib/xarray.c
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@ -1360,43 +1360,6 @@ void *xa_erase(struct xarray *xa, unsigned long index)
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}
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EXPORT_SYMBOL(xa_erase);
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/**
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* xa_store() - Store this entry in the XArray.
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* @xa: XArray.
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* @index: Index into array.
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* @entry: New entry.
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* @gfp: Memory allocation flags.
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*
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* After this function returns, loads from this index will return @entry.
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* Storing into an existing multislot entry updates the entry of every index.
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* The marks associated with @index are unaffected unless @entry is %NULL.
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*
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* Context: Process context. Takes and releases the xa_lock. May sleep
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* if the @gfp flags permit.
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* Return: The old entry at this index on success, xa_err(-EINVAL) if @entry
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* cannot be stored in an XArray, or xa_err(-ENOMEM) if memory allocation
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* failed.
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*/
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void *xa_store(struct xarray *xa, unsigned long index, void *entry, gfp_t gfp)
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{
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XA_STATE(xas, xa, index);
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void *curr;
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if (WARN_ON_ONCE(xa_is_internal(entry)))
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return XA_ERROR(-EINVAL);
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do {
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xas_lock(&xas);
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curr = xas_store(&xas, entry);
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if (xa_track_free(xa) && entry)
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xas_clear_mark(&xas, XA_FREE_MARK);
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xas_unlock(&xas);
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} while (xas_nomem(&xas, gfp));
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return xas_result(&xas, curr);
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}
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EXPORT_SYMBOL(xa_store);
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/**
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* __xa_store() - Store this entry in the XArray.
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* @xa: XArray.
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@ -1430,6 +1393,35 @@ void *__xa_store(struct xarray *xa, unsigned long index, void *entry, gfp_t gfp)
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}
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EXPORT_SYMBOL(__xa_store);
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/**
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* xa_store() - Store this entry in the XArray.
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* @xa: XArray.
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* @index: Index into array.
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* @entry: New entry.
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* @gfp: Memory allocation flags.
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*
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* After this function returns, loads from this index will return @entry.
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* Storing into an existing multislot entry updates the entry of every index.
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* The marks associated with @index are unaffected unless @entry is %NULL.
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*
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* Context: Any context. Takes and releases the xa_lock.
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* May sleep if the @gfp flags permit.
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* Return: The old entry at this index on success, xa_err(-EINVAL) if @entry
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* cannot be stored in an XArray, or xa_err(-ENOMEM) if memory allocation
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* failed.
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*/
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void *xa_store(struct xarray *xa, unsigned long index, void *entry, gfp_t gfp)
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{
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void *curr;
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xa_lock(xa);
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curr = __xa_store(xa, index, entry, gfp);
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xa_unlock(xa);
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return curr;
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}
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EXPORT_SYMBOL(xa_store);
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/**
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* __xa_cmpxchg() - Store this entry in the XArray.
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* @xa: XArray.
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