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XArray: Update xa_erase family descriptions

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xa_erase does not allocate memory and doesn't have a gfp parameter.
Update the descriptions of all four variants to be more useful.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
This commit is contained in:
Matthew Wilcox
2019-01-26 00:52:26 -05:00
parent bd54211b8e
commit 809ab9371c
2 changed files with 14 additions and 15 deletions
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12
include/linux/xarray.h
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@@ -526,9 +526,9 @@ static inline void *xa_store_irq(struct xarray *xa, unsigned long index,
* @xa: XArray.
* @index: Index of entry.
*
* This function is the equivalent of calling xa_store() with %NULL as
* the third argument. The XArray does not need to allocate memory, so
* the user does not need to provide GFP flags.
* After this function returns, loading from @index will return %NULL.
* If the index is part of a multi-index entry, all indices will be erased
* and none of the entries will be part of a multi-index entry.
*
* Context: Any context. Takes and releases the xa_lock while
* disabling softirqs.
@@ -550,9 +550,9 @@ static inline void *xa_erase_bh(struct xarray *xa, unsigned long index)
* @xa: XArray.
* @index: Index of entry.
*
* This function is the equivalent of calling xa_store() with %NULL as
* the third argument. The XArray does not need to allocate memory, so
* the user does not need to provide GFP flags.
* After this function returns, loading from @index will return %NULL.
* If the index is part of a multi-index entry, all indices will be erased
* and none of the entries will be part of a multi-index entry.
*
* Context: Process context. Takes and releases the xa_lock while
* disabling interrupts.