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Pankaj Raghav authored
Unconditionally calling radix_tree_preload_end() results in a OOPS message as the preload is only conditionally called for gfpflags_allow_blocking(). [ 20.267323] BUG: using smp_processor_id() in preemptible [00000000] code: fio/416 [ 20.267837] caller is brd_insert_page.part.0+0xbe/0x190 [brd] [ 20.269436] Call Trace: [ 20.269598] <TASK> [ 20.269742] dump_stack_lvl+0x32/0x50 [ 20.269982] check_preemption_disabled+0xd1/0xe0 [ 20.270289] brd_insert_page.part.0+0xbe/0x190 [brd] [ 20.270664] brd_submit_bio+0x33f/0xf40 [brd] Use radix_tree_maybe_preload() which does preload only if gfpflags_allow_blocking() is true but also takes the lock. Therefore, unconditionally calling radix_tree_preload_end() should not create any issues and the message disappears. Fixes: 6ded703c ("brd: check for REQ_NOWAIT and set correct page allocation mask") Signed-off-by:
Pankaj Raghav <p.raghav@samsung.com> Link: https://lore.kernel.org/r/20230217121442.33914-1-p.raghav@samsung.comSigned-off-by:
Jens Axboe <axboe@kernel.dk>
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