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When sendfile_swapin() sweeps through pages in search for a bogus page

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skip first and last pages.  This is a micro optimisation.
This commit is contained in:
Gleb Smirnoff 2020-02-25 19:11:20 +00:00
parent 41fc1ce14c
commit 69302907d6
1 changed files with 1 additions and 1 deletions
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2
sys/kern/kern_sendfile.c
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@ -462,7 +462,7 @@ sendfile_swapin(vm_object_t obj, struct sf_io *sfio, int *nios, off_t off,
* Restore the valid page pointers. They are already
* unbusied, but still wired.
*/
for (j = i; j < i + count; j++)
for (j = i + 1; j < i + count - 1; j++)
if (pa[j] == bogus_page) {
pa[j] = vm_page_lookup(obj,
OFF_TO_IDX(vmoff(j, off)));