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authorOmar Sandoval <osandov@fb.com>2016-09-17 12:20:54 -0700
committerJens Axboe <axboe@fb.com>2016-09-17 13:39:06 -0600
commit5c64a8df0ca88c79c9cb74674c2481e5f7ede511 (patch)
treea10aa8ab518921ee8f16511076a15ff2b64e52ec /net
parent05fd095d53b979878f016c3a7080d3683cc89d72 (diff)
sbitmap: don't update the allocation hint on clear after resize
If we have a bunch of high-numbered bits allocated and then we resize the struct sbitmap_queue, when those bits get cleared, we'll update the hint and then have to re-randomize it repeatedly. Avoid that by checking that the cleared bit is still a valid hint. No measurable performance difference in the common case. Signed-off-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Jens Axboe <axboe@fb.com>
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