diff options
Diffstat (limited to 'sys/kern/vfs_bio.c')
| -rw-r--r-- | sys/kern/vfs_bio.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/sys/kern/vfs_bio.c b/sys/kern/vfs_bio.c index b06625b..246fc4c 100644 --- a/sys/kern/vfs_bio.c +++ b/sys/kern/vfs_bio.c @@ -1249,7 +1249,7 @@ brelse(struct buf * bp) /* unlock */ BUF_UNLOCK(bp); - bp->b_flags &= ~(B_ASYNC | B_NOCACHE | B_AGE | B_RELBUF); + bp->b_flags &= ~(B_ASYNC | B_NOCACHE | B_AGE | B_RELBUF | B_DIRECT); bp->b_ioflags &= ~BIO_ORDERED; if ((bp->b_flags & B_DELWRI) == 0 && (bp->b_xflags & BX_VNDIRTY)) panic("brelse: not dirty"); @@ -1264,6 +1264,8 @@ brelse(struct buf * bp) * biodone() to requeue an async I/O on completion. It is also used when * known good buffers need to be requeued but we think we may need the data * again soon. + * + * XXX we should be able to leave the B_RELBUF hint set on completion. */ void bqrelse(struct buf * bp) @@ -1355,12 +1357,15 @@ vfs_vmio_release(bp) vm_page_flag_clear(m, PG_ZERO); /* * Might as well free the page if we can and it has - * no valid data. + * no valid data. We also free the page if the + * buffer was used for direct I/O */ if ((bp->b_flags & B_ASYNC) == 0 && !m->valid && m->hold_count == 0) { vm_page_busy(m); vm_page_protect(m, VM_PROT_NONE); vm_page_free(m); + } else if (bp->b_flags & B_DIRECT) { + vm_page_try_to_free(m); } else if (vm_page_count_severe()) { vm_page_try_to_cache(m); } |
