diff options
| author | Michael I. Bushnell <mib@gnu.org> | 1994-11-02 21:08:19 +0000 |
|---|---|---|
| committer | Michael I. Bushnell <mib@gnu.org> | 1994-11-02 21:08:19 +0000 |
| commit | b02f368f043f7494c328ee3a44a910d81a608758 (patch) | |
| tree | 92a165605460283b12218282401b089d43f433c0 | |
| parent | fd8ed79a8beb486c429607b2ff008bb991ff88bc (diff) | |
entered into RCS
| -rw-r--r-- | ufs/hyper.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/ufs/hyper.c b/ufs/hyper.c index 5e9eb12f..1317e8b6 100644 --- a/ufs/hyper.c +++ b/ufs/hyper.c @@ -105,13 +105,24 @@ get_hypermetadata (void) diskfs_end_catch_exception (); } -/* We don't need this callback; all our data is backed by pagers. */ +/* Write the csum data. This isn't backed by a pager because it is + taken from ordinary data blocks and might not be an even number + of pages; in that case writing it through the pager would nuke whatever + pages came after it on the disk and were backed by file pagers. */ void diskfs_set_hypermetadata (int wait, int clean) { + spin_lock (&alloclock); + if (csum_dirty) + (wait ? dev_write_sync : dev_write) (fsbtodb (sblock, sblock->fs_csaddr), + (vm_address_t) csum, + fragroundup (sblock, + sblock->fs_cssize)); + csum_dirty = 0; + spin_unlock (&alloclock); } -/* Copy the sblock and csum into the disk */ +/* Copy the sblock into the disk */ void copy_sblock () { @@ -120,14 +131,6 @@ copy_sblock () assert (!diskfs_catch_exception ()); spin_lock (&alloclock); - if (csum_dirty) - { - bcopy (csum, disk_image + fsaddr (sblock, sblock->fs_csaddr), - fragroundup (sblock, sblock->fs_cssize)); - record_poke (disk_image + fsaddr (sblock, sblock->fs_csaddr), - fragroundup (sblock, sblock->fs_cssize)); - csum_dirty = 0; - } if (clean && !diskfs_readonly) { |