Author: alc
Date: Mon Jun 1 06:12:08 2009
New Revision: 193201
URL: http://svn.freebsd.org/changeset/base/193201
Log:
Eliminate a comment describing code that was deleted over eight years ago.
Move another comment to its proper place. Fix a typo in a third comment.
Modified:
head/sys/kern/vfs_bio.c
Modified: head/sys/kern/vfs_bio.c
==============================================================================
--- head/sys/kern/vfs_bio.c Mon Jun 1 05:48:30 2009 (r193200)
+++ head/sys/kern/vfs_bio.c Mon Jun 1 06:12:08 2009 (r193201)
@@ -638,13 +638,6 @@ bufinit(void)
hifreebuffers = 2 * lofreebuffers;
numfreebuffers = nbuf;
-/*
- * Maximum number of async ops initiated per buf_daemon loop. This is
- * somewhat of a hack at the moment, we really need to limit ourselves
- * based on the number of bytes of I/O in-transit that were initiated
- * from buf_daemon.
- */
-
bogus_page = vm_page_alloc(NULL, 0, VM_ALLOC_NOOBJ |
VM_ALLOC_NORMAL | VM_ALLOC_WIRED);
}
@@ -1202,7 +1195,7 @@ brelse(struct buf *bp)
/*
* Failed write, redirty. Must clear BIO_ERROR to prevent
* pages from being scrapped. If the error is anything
- * other than an I/O error (EIO), assume that retryingi
+ * other than an I/O error (EIO), assume that retrying
* is futile.
*/
bp->b_ioflags &= ~BIO_ERROR;
@@ -2403,15 +2396,9 @@ vfs_setdirty(struct buf *bp)
/*
* Degenerate case - empty buffer
*/
-
if (bp->b_bufsize == 0)
return;
- /*
- * We qualify the scan for modified pages on whether the
- * object has been flushed yet.
- */
-
if ((bp->b_flags & B_VMIO) == 0)
return;
@@ -2428,6 +2415,11 @@ vfs_setdirty_locked_object(struct buf *b
object = bp->b_bufobj->bo_object;
VM_OBJECT_LOCK_ASSERT(object, MA_OWNED);
+
+ /*
+ * We qualify the scan for modified pages on whether the
+ * object has been flushed yet.
+ */
if (object->flags & (OBJ_MIGHTBEDIRTY|OBJ_CLEANING)) {
vm_offset_t boffset;
vm_offset_t eoffset;
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