[PATCH 77/78] fs: simplify the get_super_thawed interface

[Christoph Hellwig <hch@xxxxxx>]

Merge get_super_thawed and get_super_exclusive_thawed into a single
function.

Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
 fs/quota/quota.c   |  4 ++--
 fs/super.c         | 42 +++++++++++-------------------------------
 include/linux/fs.h |  3 +--
 3 files changed, 14 insertions(+), 35 deletions(-)

diff --git a/fs/quota/quota.c b/fs/quota/quota.c
index 9af95c7a0bbe3c..21d43933213965 100644
--- a/fs/quota/quota.c
+++ b/fs/quota/quota.c
@@ -876,9 +876,9 @@ static struct super_block *quotactl_block(const char __user 
*special, int cmd)
        if (IS_ERR(bdev))
                return ERR_CAST(bdev);
        if (quotactl_cmd_onoff(cmd))
-               sb = get_super_exclusive_thawed(bdev);
+               sb = get_super_thawed(bdev, true);
        else if (quotactl_cmd_write(cmd))
-               sb = get_super_thawed(bdev);
+               sb = get_super_thawed(bdev, false);
        else
                sb = get_super(bdev);
        bdput(bdev);
diff --git a/fs/super.c b/fs/super.c
index b327a82bc1946b..50995f8abd1bf1 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -789,8 +789,17 @@ struct super_block *get_super(struct block_device *bdev)
 }
 EXPORT_SYMBOL(get_super);
 
-static struct super_block *__get_super_thawed(struct block_device *bdev,
-                                             bool excl)
+/**
+ * get_super_thawed - get thawed superblock of a device
+ * @bdev: device to get the superblock for
+ * @excl: lock s_umount exclusive if %true, else shared.
+ *
+ * Scans the superblock list and finds the superblock of the file system 
mounted
+ * on the device.  The superblock is returned with s_umount held once it is
+ * thawed (or immediately if it was not frozen), or %NULL if no superblock was
+ * found.
+ */
+struct super_block *get_super_thawed(struct block_device *bdev, bool excl)
 {
        while (1) {
                struct super_block *s = __get_super(bdev, excl);
@@ -805,37 +814,8 @@ static struct super_block *__get_super_thawed(struct 
block_device *bdev,
                put_super(s);
        }
 }
-
-/**
- *     get_super_thawed - get thawed superblock of a device
- *     @bdev: device to get the superblock for
- *
- *     Scans the superblock list and finds the superblock of the file system
- *     mounted on the device. The superblock is returned once it is thawed
- *     (or immediately if it was not frozen). %NULL is returned if no match
- *     is found.
- */
-struct super_block *get_super_thawed(struct block_device *bdev)
-{
-       return __get_super_thawed(bdev, false);
-}
 EXPORT_SYMBOL(get_super_thawed);
 
-/**
- *     get_super_exclusive_thawed - get thawed superblock of a device
- *     @bdev: device to get the superblock for
- *
- *     Scans the superblock list and finds the superblock of the file system
- *     mounted on the device. The superblock is returned once it is thawed
- *     (or immediately if it was not frozen) and s_umount semaphore is held
- *     in exclusive mode. %NULL is returned if no match is found.
- */
-struct super_block *get_super_exclusive_thawed(struct block_device *bdev)
-{
-       return __get_super_thawed(bdev, true);
-}
-EXPORT_SYMBOL(get_super_exclusive_thawed);
-
 /**
  * get_active_super - get an active reference to the superblock of a device
  * @bdev: device to get the superblock for
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 8667d0cdc71e76..d026d177a526bf 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -3132,8 +3132,7 @@ extern struct file_system_type *get_filesystem(struct 
file_system_type *fs);
 extern void put_filesystem(struct file_system_type *fs);
 extern struct file_system_type *get_fs_type(const char *name);
 extern struct super_block *get_super(struct block_device *);
-extern struct super_block *get_super_thawed(struct block_device *);
-extern struct super_block *get_super_exclusive_thawed(struct block_device 
*bdev);
+struct super_block *get_super_thawed(struct block_device *bdev, bool excl);
 extern struct super_block *get_active_super(struct block_device *bdev);
 extern void drop_super(struct super_block *sb);
 extern void drop_super_exclusive(struct super_block *sb);
-- 
2.29.2