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XArray: Add xa_for_each_range

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This function supports iterating over a range of an array.  Also add
documentation links for xa_for_each_start().

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
This commit is contained in:
Matthew Wilcox (Oracle)
2020-01-12 15:54:10 -05:00
parent c44aa5e8ab
commit 00ed452c21
2 changed files with 38 additions and 9 deletions
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10
Documentation/core-api/xarray.rst
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@@ -82,10 +82,10 @@ at that index is ``NULL``, you can use xa_insert() which
returns ``-EBUSY`` if the entry is not empty.
You can copy entries out of the XArray into a plain array by calling
xa_extract(). Or you can iterate over the present entries in
the XArray by calling xa_for_each(). You may prefer to use
xa_find() or xa_find_after() to move to the next present
entry in the XArray.
xa_extract(). Or you can iterate over the present entries in the XArray
by calling xa_for_each(), xa_for_each_start() or xa_for_each_range().
You may prefer to use xa_find() or xa_find_after() to move to the next
present entry in the XArray.
Calling xa_store_range() stores the same entry in a range
of indices. If you do this, some of the other operations will behave
@@ -193,6 +193,8 @@ No lock needed:
Takes RCU read lock:
* xa_load()
* xa_for_each()
* xa_for_each_start()
* xa_for_each_range()
* xa_find()
* xa_find_after()
* xa_extract()