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| author | Matthew Wilcox <willy@infradead.org> | 2018-11-29 16:04:35 -0500 |
|---|---|---|
| committer | Matthew Wilcox <willy@infradead.org> | 2018-12-06 09:25:33 -0500 |
| commit | 4f145cd66a1a76136ff5a03a99e37ba082715dc6 (patch) | |
| tree | 19adeba827a582f6b875df59c10f0e56672d9f55 /lib/test_xarray.c | |
| parent | b7677a132a4c2ff877986c5b30f9427127b9897a (diff) | |
| download | linux-4f145cd66a1a76136ff5a03a99e37ba082715dc6.tar.bz2 | |
XArray tests: Check iterating over multiorder entries
There was no bug here, but there was no test coverage for this scenario.
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Diffstat (limited to 'lib/test_xarray.c')
| -rw-r--r-- | lib/test_xarray.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/lib/test_xarray.c b/lib/test_xarray.c index d30fd907a3dd..6f09c845187e 100644 --- a/lib/test_xarray.c +++ b/lib/test_xarray.c @@ -476,6 +476,32 @@ static noinline void check_multi_store_2(struct xarray *xa, unsigned long index, xas_unlock(&xas); XA_BUG_ON(xa, !xa_empty(xa)); } + +static noinline void check_multi_store_3(struct xarray *xa, unsigned long index, + unsigned int order) +{ + XA_STATE(xas, xa, 0); + void *entry; + int n = 0; + + xa_store_order(xa, index, order, xa_mk_index(index), GFP_KERNEL); + + xas_lock(&xas); + xas_for_each(&xas, entry, ULONG_MAX) { + XA_BUG_ON(xa, entry != xa_mk_index(index)); + n++; + } + XA_BUG_ON(xa, n != 1); + xas_set(&xas, index + 1); + xas_for_each(&xas, entry, ULONG_MAX) { + XA_BUG_ON(xa, entry != xa_mk_index(index)); + n++; + } + XA_BUG_ON(xa, n != 2); + xas_unlock(&xas); + + xa_destroy(xa); +} #endif static noinline void check_multi_store(struct xarray *xa) @@ -550,6 +576,11 @@ static noinline void check_multi_store(struct xarray *xa) check_multi_store_1(xa, (1UL << i) + 1, i); } check_multi_store_2(xa, 4095, 9); + + for (i = 1; i < 20; i++) { + check_multi_store_3(xa, 0, i); + check_multi_store_3(xa, 1UL << i, i); + } #endif } |