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vm_page_sleep_if_busy — wait for a busy page to become unbusy
#include <sys/param.h> #include <vm/vm.h> #include <vm/vm_page.h> int vm_page_sleep_if_busy(vm_page_t m, int also_m_busy, const char *wmesg);
The vm_page_sleep_if_busy() function waits until the VPO_BUSY flag is cleared. If also_m_busy is non-zero, it also waits for m->busy to become zero.
If vm_page_sleep_if_busy() finds the page busy it returns TRUE. If not, it returns FALSE. Returning TRUE does not necessary mean that vm_page_sleep_if_busy() slept, but only that splvm() was called.
This manual page was written by Chad David <firstname.lastname@example.org>.