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When tmpfs and POSIX shm pagein a page for the sole purpose of performing

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truncation, immediately queue the page for asynchronous laundering rather
than making the page pass through inactive queue first.

Reviewed by:	kib, markj
This commit is contained in:
alc 2016-12-11 19:24:41 +00:00
parent 16f58155c2
commit 924c556274
2 changed files with 18 additions and 2 deletions
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10
sys/fs/tmpfs/tmpfs_subr.c
View File

@ -1376,7 +1376,15 @@ tmpfs_reg_resize(struct vnode *vp, off_t newsize, boolean_t ignerr)
NULL);
vm_page_lock(m);
if (rv == VM_PAGER_OK) {
vm_page_deactivate(m);
/*
* Since the page was not resident,
* and therefore not recently
* accessed, immediately enqueue it
* for asynchronous laundering. The
* current operation is not regarded
* as an access.
*/
vm_page_launder(m);
vm_page_unlock(m);
vm_page_xunbusy(m);
} else {

10
sys/kern/uipc_shm.c
View File

@ -460,7 +460,15 @@ shm_dotruncate(struct shmfd *shmfd, off_t length)
NULL);
vm_page_lock(m);
if (rv == VM_PAGER_OK) {
vm_page_deactivate(m);
/*
* Since the page was not resident,
* and therefore not recently
* accessed, immediately enqueue it
* for asynchronous laundering. The
* current operation is not regarded
* as an access.
*/
vm_page_launder(m);
vm_page_unlock(m);
vm_page_xunbusy(m);
} else {