Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux...

[pandora-kernel.git] / fs / ext4 / super.c

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 29c80f6..48ce561 100644 (file)
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -657,7 +657,7 @@ static struct block_device *ext4_blkdev_get(dev_t dev, struct super_block *sb)
        struct block_device *bdev;
        char b[BDEVNAME_SIZE];
 
-       bdev = open_by_devnum(dev, FMODE_READ|FMODE_WRITE);
+       bdev = blkdev_get_by_dev(dev, FMODE_READ|FMODE_WRITE|FMODE_EXCL, sb);
        if (IS_ERR(bdev))
                goto fail;
        return bdev;
@@ -673,8 +673,7 @@ fail:
  */
 static int ext4_blkdev_put(struct block_device *bdev)
 {
-       bd_release(bdev);
-       return blkdev_put(bdev, FMODE_READ|FMODE_WRITE);
+       return blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
 }
 
 static int ext4_blkdev_remove(struct ext4_sb_info *sbi)
@@ -1162,7 +1161,7 @@ static int ext4_release_dquot(struct dquot *dquot);
 static int ext4_mark_dquot_dirty(struct dquot *dquot);
 static int ext4_write_info(struct super_block *sb, int type);
 static int ext4_quota_on(struct super_block *sb, int type, int format_id,
-                               char *path);
+                        struct path *path);
 static int ext4_quota_off(struct super_block *sb, int type);
 static int ext4_quota_on_mount(struct super_block *sb, int type);
 static ssize_t ext4_quota_read(struct super_block *sb, int type, char *data,
@@ -3778,13 +3777,6 @@ static journal_t *ext4_get_dev_journal(struct super_block *sb,
        if (bdev == NULL)
                return NULL;
 
-       if (bd_claim(bdev, sb)) {
-               ext4_msg(sb, KERN_ERR,
-                       "failed to claim external journal device");
-               blkdev_put(bdev, FMODE_READ|FMODE_WRITE);
-               return NULL;
-       }
-
        blocksize = sb->s_blocksize;
        hblock = bdev_logical_block_size(bdev);
        if (blocksize < hblock) {
@@ -4566,27 +4558,20 @@ static int ext4_quota_on_mount(struct super_block *sb, int type)
  * Standard function to be called on quota_on
  */
 static int ext4_quota_on(struct super_block *sb, int type, int format_id,
-                        char *name)
+                        struct path *path)
 {
        int err;
-       struct path path;
 
        if (!test_opt(sb, QUOTA))
                return -EINVAL;
 
-       err = kern_path(name, LOOKUP_FOLLOW, &path);
-       if (err)
-               return err;
-
        /* Quotafile not on the same filesystem? */
-       if (path.mnt->mnt_sb != sb) {
-               path_put(&path);
+       if (path->mnt->mnt_sb != sb)
                return -EXDEV;
-       }
        /* Journaling quota? */
        if (EXT4_SB(sb)->s_qf_names[type]) {
                /* Quotafile not in fs root? */
-               if (path.dentry->d_parent != sb->s_root)
+               if (path->dentry->d_parent != sb->s_root)
                        ext4_msg(sb, KERN_WARNING,
                                "Quota file not on filesystem root. "
                                "Journaled quota will not work");
@@ -4597,7 +4582,7 @@ static int ext4_quota_on(struct super_block *sb, int type, int format_id,
         * all updates to the file when we bypass pagecache...
         */
        if (EXT4_SB(sb)->s_journal &&
-           ext4_should_journal_data(path.dentry->d_inode)) {
+           ext4_should_journal_data(path->dentry->d_inode)) {
                /*
                 * We don't need to lock updates but journal_flush() could
                 * otherwise be livelocked...
@@ -4605,15 +4590,11 @@ static int ext4_quota_on(struct super_block *sb, int type, int format_id,
                jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal);
                err = jbd2_journal_flush(EXT4_SB(sb)->s_journal);
                jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal);
-               if (err) {
-                       path_put(&path);
+               if (err)
                        return err;
-               }
        }
 
-       err = dquot_quota_on_path(sb, type, format_id, &path);
-       path_put(&path);
-       return err;
+       return dquot_quota_on(sb, type, format_id, path);
 }
 
 static int ext4_quota_off(struct super_block *sb, int type)