diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2010-03-23 06:06:58 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2010-05-21 18:31:16 -0400 |
| commit | 01a05b337a5b647909e1d6670f57e7202318a5fb (patch) | |
| tree | 7877f08db14877d06346c8e1ef52aa17f2483e93 /fs/buffer.c | |
| parent | 35cf7ba0b46dc3582a01c3860b14bff122662aa3 (diff) | |
| download | lwn-01a05b337a5b647909e1d6670f57e7202318a5fb.tar.gz lwn-01a05b337a5b647909e1d6670f57e7202318a5fb.zip | |
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.c | 24 |
1 files changed, 8 insertions, 16 deletions
diff --git a/fs/buffer.c b/fs/buffer.c index ded29b0fdac3..2914d9adfb50 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"); } |