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Release bh in simplefs_fill_super()

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This commit is contained in:
Azat Khuzhin 2013-09-16 02:28:46 +04:00
parent 90ca0e557c
commit 9aee1ce302
1 changed files with 12 additions and 5 deletions
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17
simple.c
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@ -672,6 +672,7 @@ int simplefs_fill_super(struct super_block *sb, void *data, int silent)
struct inode *root_inode; struct inode *root_inode;
struct buffer_head *bh; struct buffer_head *bh;
struct simplefs_super_block *sb_disk; struct simplefs_super_block *sb_disk;
int ret = -EPERM;
bh = (struct buffer_head *)sb_bread(sb, bh = (struct buffer_head *)sb_bread(sb,
SIMPLEFS_SUPERBLOCK_BLOCK_NUMBER); SIMPLEFS_SUPERBLOCK_BLOCK_NUMBER);
@ -685,13 +686,13 @@ int simplefs_fill_super(struct super_block *sb, void *data, int silent)
if (unlikely(sb_disk->magic != SIMPLEFS_MAGIC)) { if (unlikely(sb_disk->magic != SIMPLEFS_MAGIC)) {
printk(KERN_ERR printk(KERN_ERR
"The filesystem that you try to mount is not of type simplefs. Magicnumber mismatch."); "The filesystem that you try to mount is not of type simplefs. Magicnumber mismatch.");
return -EPERM; goto release;
} }
if (unlikely(sb_disk->block_size != SIMPLEFS_DEFAULT_BLOCK_SIZE)) { if (unlikely(sb_disk->block_size != SIMPLEFS_DEFAULT_BLOCK_SIZE)) {
printk(KERN_ERR printk(KERN_ERR
"simplefs seem to be formatted using a non-standard block size."); "simplefs seem to be formatted using a non-standard block size.");
return -EPERM; goto release;
} }
printk(KERN_INFO printk(KERN_INFO
@ -724,10 +725,16 @@ int simplefs_fill_super(struct super_block *sb, void *data, int silent)
iput(root_inode); iput(root_inode);
#endif #endif
if (!sb->s_root) if (!sb->s_root) {
return -ENOMEM; ret = -ENOMEM;
goto release;
}
return 0; ret = 0;
release:
brelse(bh);
return ret;
} }
static struct dentry *simplefs_mount(struct file_system_type *fs_type, static struct dentry *simplefs_mount(struct file_system_type *fs_type,