diff options
| author | Jeff Roberson <jeff@FreeBSD.org> | 2020-01-19 23:47:32 +0000 |
|---|---|---|
| committer | Jeff Roberson <jeff@FreeBSD.org> | 2020-01-19 23:47:32 +0000 |
| commit | d6e13f3b4d5743177ac22f3642b07ba652c1f1a8 (patch) | |
| tree | 000c91864ae5607a0215d20571ecf7ab0ea66812 /sys/dev/md | |
| parent | d1df7fdd040a25a6d61d04a3e04a931aa75f3094 (diff) | |
Notes
Diffstat (limited to 'sys/dev/md')
| -rw-r--r-- | sys/dev/md/md.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/sys/dev/md/md.c b/sys/dev/md/md.c index ee7fe8f89a5d..4a07591ed51d 100644 --- a/sys/dev/md/md.c +++ b/sys/dev/md/md.c @@ -1057,11 +1057,12 @@ mdstart_swap(struct md_s *sc, struct bio *bp) lastend = (bp->bio_offset + bp->bio_length - 1) % PAGE_SIZE + 1; rv = VM_PAGER_OK; - VM_OBJECT_WLOCK(sc->object); vm_object_pip_add(sc->object, 1); for (i = bp->bio_offset / PAGE_SIZE; i <= lastp; i++) { len = ((i == lastp) ? lastend : PAGE_SIZE) - offs; + VM_OBJECT_WLOCK(sc->object); m = vm_page_grab(sc->object, i, VM_ALLOC_SYSTEM); + VM_OBJECT_WUNLOCK(sc->object); if (bp->bio_cmd == BIO_READ) { if (vm_page_all_valid(m)) rv = VM_PAGER_OK; @@ -1069,7 +1070,9 @@ mdstart_swap(struct md_s *sc, struct bio *bp) rv = vm_pager_get_pages(sc->object, &m, 1, NULL, NULL); if (rv == VM_PAGER_ERROR) { + VM_OBJECT_WLOCK(sc->object); vm_page_free(m); + VM_OBJECT_WUNLOCK(sc->object); break; } else if (rv == VM_PAGER_FAIL) { /* @@ -1099,7 +1102,9 @@ mdstart_swap(struct md_s *sc, struct bio *bp) rv = vm_pager_get_pages(sc->object, &m, 1, NULL, NULL); if (rv == VM_PAGER_ERROR) { + VM_OBJECT_WLOCK(sc->object); vm_page_free(m); + VM_OBJECT_WUNLOCK(sc->object); break; } else if (rv == VM_PAGER_FAIL) pmap_zero_page(m); @@ -1122,8 +1127,10 @@ mdstart_swap(struct md_s *sc, struct bio *bp) else rv = vm_pager_get_pages(sc->object, &m, 1, NULL, NULL); + VM_OBJECT_WLOCK(sc->object); if (rv == VM_PAGER_ERROR) { vm_page_free(m); + VM_OBJECT_WUNLOCK(sc->object); break; } else if (rv == VM_PAGER_FAIL) { vm_page_free(m); @@ -1139,6 +1146,7 @@ mdstart_swap(struct md_s *sc, struct bio *bp) m = NULL; } } + VM_OBJECT_WUNLOCK(sc->object); } if (m != NULL) { vm_page_xunbusy(m); @@ -1160,7 +1168,6 @@ mdstart_swap(struct md_s *sc, struct bio *bp) ma_offs += len; } vm_object_pip_wakeup(sc->object); - VM_OBJECT_WUNLOCK(sc->object); return (rv != VM_PAGER_ERROR ? 0 : ENOSPC); } |