1 files changed, 19 insertions, 16 deletions

diff --git a/fs/vfat/namei.c b/fs/vfat/namei.c
index a3522727ea5b..b546ba69be82 100644
--- a/fs/vfat/namei.c
+++ b/fs/vfat/namei.c
@@ -645,7 +645,7 @@ static int vfat_add_entry(struct inode *dir, struct qstr *qname, int is_dir,
         if (len == 0)
                 return -ENOENT;
 
-        slots = kmalloc(sizeof(*slots) * MSDOS_SLOTS, GFP_KERNEL);
+        slots = kmalloc(sizeof(*slots) * MSDOS_SLOTS, GFP_NOFS);
         if (slots == NULL)
                 return -ENOMEM;
 
@@ -687,7 +687,7 @@ static struct dentry *vfat_lookup(struct inode *dir, struct dentry *dentry,
         struct dentry *alias;
         int err, table;
 
-        lock_kernel();
+        lock_super(sb);
         table = (MSDOS_SB(sb)->options.name_check == 's') ? 2 : 0;
         dentry->d_op = &vfat_dentry_ops[table];
 
@@ -699,7 +699,7 @@ static struct dentry *vfat_lookup(struct inode *dir, struct dentry *dentry,
         inode = fat_build_inode(sb, sinfo.de, sinfo.i_pos);
         brelse(sinfo.bh);
         if (IS_ERR(inode)) {
-                unlock_kernel();
+                unlock_super(sb);
                 return ERR_CAST(inode);
         }
         alias = d_find_alias(inode);
@@ -708,13 +708,13 @@ static struct dentry *vfat_lookup(struct inode *dir, struct dentry *dentry,
                         dput(alias);
                 else {
                         iput(inode);
-                        unlock_kernel();
+                        unlock_super(sb);
                         return alias;
                 }
 
         }
 error:
-        unlock_kernel();
+        unlock_super(sb);
         dentry->d_op = &vfat_dentry_ops[table];
         dentry->d_time = dentry->d_parent->d_inode->i_version;
         dentry = d_splice_alias(inode, dentry);
@@ -734,7 +734,7 @@ static int vfat_create(struct inode *dir, struct dentry *dentry, int mode,
         struct timespec ts;
         int err;
 
-        lock_kernel();
+        lock_super(sb);
 
         ts = CURRENT_TIME_SEC;
         err = vfat_add_entry(dir, &dentry->d_name, 0, 0, &ts, &sinfo);
@@ -755,17 +755,18 @@ static int vfat_create(struct inode *dir, struct dentry *dentry, int mode,
         dentry->d_time = dentry->d_parent->d_inode->i_version;
         d_instantiate(dentry, inode);
 out:
-        unlock_kernel();
+        unlock_super(sb);
         return err;
 }
 
 static int vfat_rmdir(struct inode *dir, struct dentry *dentry)
 {
         struct inode *inode = dentry->d_inode;
+        struct super_block *sb = dir->i_sb;
         struct fat_slot_info sinfo;
         int err;
 
-        lock_kernel();
+        lock_super(sb);
 
         err = fat_dir_empty(inode);
         if (err)
@@ -783,7 +784,7 @@ static int vfat_rmdir(struct inode *dir, struct dentry *dentry)
         inode->i_mtime = inode->i_atime = CURRENT_TIME_SEC;
         fat_detach(inode);
 out:
-        unlock_kernel();
+        unlock_super(sb);
 
         return err;
 }
@@ -791,10 +792,11 @@ out:
 static int vfat_unlink(struct inode *dir, struct dentry *dentry)
 {
         struct inode *inode = dentry->d_inode;
+        struct super_block *sb = dir->i_sb;
         struct fat_slot_info sinfo;
         int err;
 
-        lock_kernel();
+        lock_super(sb);
 
         err = vfat_find(dir, &dentry->d_name, &sinfo);
         if (err)
@@ -807,7 +809,7 @@ static int vfat_unlink(struct inode *dir, struct dentry *dentry)
         inode->i_mtime = inode->i_atime = CURRENT_TIME_SEC;
         fat_detach(inode);
 out:
-        unlock_kernel();
+        unlock_super(sb);
 
         return err;
 }
@@ -820,7 +822,7 @@ static int vfat_mkdir(struct inode *dir, struct dentry *dentry, int mode)
         struct timespec ts;
         int err, cluster;
 
-        lock_kernel();
+        lock_super(sb);
 
         ts = CURRENT_TIME_SEC;
         cluster = fat_alloc_new_dir(dir, &ts);
@@ -849,13 +851,13 @@ static int vfat_mkdir(struct inode *dir, struct dentry *dentry, int mode)
         dentry->d_time = dentry->d_parent->d_inode->i_version;
         d_instantiate(dentry, inode);
 
-        unlock_kernel();
+        unlock_super(sb);
         return 0;
 
 out_free:
         fat_free_clusters(dir, cluster);
 out:
-        unlock_kernel();
+        unlock_super(sb);
         return err;
 }
 
@@ -869,11 +871,12 @@ static int vfat_rename(struct inode *old_dir, struct dentry *old_dentry,
         struct timespec ts;
         loff_t dotdot_i_pos, new_i_pos;
         int err, is_dir, update_dotdot, corrupt = 0;
+        struct super_block *sb = old_dir->i_sb;
 
         old_sinfo.bh = sinfo.bh = dotdot_bh = NULL;
         old_inode = old_dentry->d_inode;
         new_inode = new_dentry->d_inode;
-        lock_kernel();
+        lock_super(sb);
         err = vfat_find(old_dir, &old_dentry->d_name, &old_sinfo);
         if (err)
                 goto out;
@@ -951,7 +954,7 @@ out:
         brelse(sinfo.bh);
         brelse(dotdot_bh);
         brelse(old_sinfo.bh);
-        unlock_kernel();
+        unlock_super(sb);
 
         return err;