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authorAl Viro <viro@zeniv.linux.org.uk>2010-03-23 06:06:58 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2010-05-21 18:31:16 -0400
commit01a05b337a5b647909e1d6670f57e7202318a5fb (patch)
tree7877f08db14877d06346c8e1ef52aa17f2483e93 /fs/buffer.c
parent35cf7ba0b46dc3582a01c3860b14bff122662aa3 (diff)
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new helper: iterate_supers()
... and switch the simple "loop over superblocks and do something" loops to it. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/buffer.c')
-rw-r--r--fs/buffer.c24
1 files changed, 8 insertions, 16 deletions
diff --git a/fs/buffer.c b/fs/buffer.c
index ded29b0fdac..2914d9adfb5 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -560,25 +560,17 @@ repeat:
return err;
}
-static void do_thaw_all(struct work_struct *work)
+static void do_thaw_one(struct super_block *sb, void *unused)
{
- struct super_block *sb, *n;
char b[BDEVNAME_SIZE];
+ while (sb->s_bdev && !thaw_bdev(sb->s_bdev, sb))
+ printk(KERN_WARNING "Emergency Thaw on %s\n",
+ bdevname(sb->s_bdev, b));
+}
- spin_lock(&sb_lock);
- list_for_each_entry_safe(sb, n, &super_blocks, s_list) {
- if (list_empty(&sb->s_instances))
- continue;
- sb->s_count++;
- spin_unlock(&sb_lock);
- down_read(&sb->s_umount);
- while (sb->s_bdev && !thaw_bdev(sb->s_bdev, sb))
- printk(KERN_WARNING "Emergency Thaw on %s\n",
- bdevname(sb->s_bdev, b));
- up_read(&sb->s_umount);
- spin_lock(&sb_lock);
- }
- spin_unlock(&sb_lock);
+static void do_thaw_all(struct work_struct *work)
+{
+ iterate_supers(do_thaw_one, NULL);
kfree(work);
printk(KERN_WARNING "Emergency Thaw complete\n");
}