diff options
| -rw-r--r-- | ext2fs/pager.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/ext2fs/pager.c b/ext2fs/pager.c index be88d29d..c451d7ae 100644 --- a/ext2fs/pager.c +++ b/ext2fs/pager.c @@ -593,9 +593,11 @@ pager_clear_user_data (struct user_pager_info *upi) diskfs_nrele_light (upi->node); + spin_lock (&pager_list_lock); *upi->prevp = upi->next; if (upi->next) upi->next->prevp = upi->prevp; + spin_unlock (&pager_list_lock); free (upi); } @@ -717,6 +719,9 @@ pager_traverse (void (*func)(struct user_pager_info *)) spin_lock (&pager_list_lock); for (p = file_pager_list; p; p = p->next) + /* XXXXXXX THIS CHECK IS A HACK TO MAKE A RACE WITH DEPARTING PAGERS + RARER, UNTIL MIB FIXES PORTS TO HAVE SOFT REFERENCES!!!! XXXXX */ + if (((struct port_info *)p->p)->refcnt > 0) { i = alloca (sizeof (struct item)); i->next = list; @@ -735,6 +740,8 @@ pager_traverse (void (*func)(struct user_pager_info *)) (*func)(disk_pager); } +static struct ext2_super_block final_sblock; + /* Shutdown all the pagers. */ void diskfs_shutdown_pager () @@ -745,6 +752,12 @@ diskfs_shutdown_pager () } write_all_disknodes (); + + /* Because the superblock lives in the disk pager, we copy out the last + known value just before we shut it down. */ + bcopy (sblock, &final_sblock, sizeof (final_sblock)); + sblock = &final_sblock; + pager_traverse (shutdown_one); } |