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merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes

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This commit is contained in:
Andrew Morton
2023-08-24 15:25:56 -07:00
parent a644b0abbf e5548f85b4
commit fcbc329fa3
5 changed files with 80 additions and 21 deletions
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7
lib/maple_tree.c
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@@ -4107,6 +4107,10 @@ static inline unsigned char mas_wr_new_end(struct ma_wr_state *wr_mas)
* mas_wr_append: Attempt to append
* @wr_mas: the maple write state
*
* This is currently unsafe in rcu mode since the end of the node may be cached
* by readers while the node contents may be updated which could result in
* inaccurate information.
*
* Return: True if appended, false otherwise
*/
static inline bool mas_wr_append(struct ma_wr_state *wr_mas,
@@ -4116,6 +4120,9 @@ static inline bool mas_wr_append(struct ma_wr_state *wr_mas,
struct ma_state *mas = wr_mas->mas;
unsigned char node_pivots = mt_pivots[wr_mas->type];
if (mt_in_rcu(mas->tree))
return false;
if (mas->offset != wr_mas->node_end)
return false;