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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2020-06-14 21:52:04 -0400 |
|---|---|---|
| committer | Matthew Wilcox (Oracle) <willy@infradead.org> | 2020-10-08 10:07:15 -0400 |
| commit | 04e9e9bb8470bea74eafad1cafd552f3f06c32d9 (patch) | |
| tree | 6dc144e9e20bd52567c2de63feab318d8f9bf0d6 /lib/test_xarray.c | |
| parent | 062b735912b9f3aa3e14cd02b5ede08cf8bc093f (diff) | |
| download | lwn-04e9e9bb8470bea74eafad1cafd552f3f06c32d9.tar.gz lwn-04e9e9bb8470bea74eafad1cafd552f3f06c32d9.zip | |
XArray: Test marked multiorder iterations
Demonstrate that starting a marked iteration partway through a marked
multi-order entry works.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Diffstat (limited to 'lib/test_xarray.c')
| -rw-r--r-- | lib/test_xarray.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/lib/test_xarray.c b/lib/test_xarray.c index 9fc3da430aba..1122c4453c87 100644 --- a/lib/test_xarray.c +++ b/lib/test_xarray.c @@ -289,6 +289,27 @@ static noinline void check_xa_mark_2(struct xarray *xa) xa_destroy(xa); } +static noinline void check_xa_mark_3(struct xarray *xa) +{ +#ifdef CONFIG_XARRAY_MULTI + XA_STATE(xas, xa, 0x41); + void *entry; + int count = 0; + + xa_store_order(xa, 0x40, 2, xa_mk_index(0x40), GFP_KERNEL); + xa_set_mark(xa, 0x41, XA_MARK_0); + + rcu_read_lock(); + xas_for_each_marked(&xas, entry, ULONG_MAX, XA_MARK_0) { + count++; + XA_BUG_ON(xa, entry != xa_mk_index(0x40)); + } + XA_BUG_ON(xa, count != 1); + rcu_read_unlock(); + xa_destroy(xa); +#endif +} + static noinline void check_xa_mark(struct xarray *xa) { unsigned long index; @@ -297,6 +318,7 @@ static noinline void check_xa_mark(struct xarray *xa) check_xa_mark_1(xa, index); check_xa_mark_2(xa); + check_xa_mark_3(xa); } static noinline void check_xa_shrink(struct xarray *xa) |