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Wang YanQing authored
Execution of get_anon_bdev concurrently and preemptive kernel all could bring race condition, it isn't enough to check dev against its upper limitation with equality operator only. This patch fix it. Signed-off-by: Wang YanQing <udknight@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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