5 files changed, 0 insertions, 61 deletions

diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 537893a16014..8a04216e8b4d 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -759,7 +759,6 @@ static int load_elf_binary(struct linux_binprm * bprm, struct pt_regs * regs)
 
         /* Discard our unneeded old files struct */
         if (files) {
-                steal_locks(files);
                 put_files_struct(files);
                 files = NULL;
         }
diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c
index d73d75591a39..599f36fd0f67 100644
--- a/fs/binfmt_misc.c
+++ b/fs/binfmt_misc.c
@@ -203,7 +203,6 @@ static int load_misc_binary(struct linux_binprm *bprm, struct pt_regs *regs)
                 goto _error;
 
         if (files) {
-                steal_locks(files);
                 put_files_struct(files);
                 files = NULL;
         }
diff --git a/fs/exec.c b/fs/exec.c
index d07858c0b7c4..0b88bf646143 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -866,7 +866,6 @@ int flush_old_exec(struct linux_binprm * bprm)
         bprm->mm = NULL;                /* We're using it now */
 
         /* This is the point of no return */
-        steal_locks(files);
         put_files_struct(files);
 
         current->sas_ss_sp = current->sas_ss_size = 0;
diff --git a/fs/locks.c b/fs/locks.c
index ab61a8b54829..69435c68c1ed 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -2206,63 +2206,6 @@ int lock_may_write(struct inode *inode, loff_t start, unsigned long len)
 
 EXPORT_SYMBOL(lock_may_write);
 
-static inline void __steal_locks(struct file *file, fl_owner_t from)
-{
-        struct inode *inode = file->f_dentry->d_inode;
-        struct file_lock *fl = inode->i_flock;
-
-        while (fl) {
-                if (fl->fl_file == file && fl->fl_owner == from)
-                        fl->fl_owner = current->files;
-                fl = fl->fl_next;
-        }
-}
-
-/* When getting ready for executing a binary, we make sure that current
- * has a files_struct on its own. Before dropping the old files_struct,
- * we take over ownership of all locks for all file descriptors we own.
- * Note that we may accidentally steal a lock for a file that a sibling
- * has created since the unshare_files() call.
- */
-void steal_locks(fl_owner_t from)
-{
-        struct files_struct *files = current->files;
-        int i, j;
-        struct fdtable *fdt;
-
-        if (from == files)
-                return;
-
-        lock_kernel();
-        j = 0;
-
-        /*
-         * We are not taking a ref to the file structures, so
-         * we need to acquire ->file_lock.
-         */
-        spin_lock(&files->file_lock);
-        fdt = files_fdtable(files);
-        for (;;) {
-                unsigned long set;
-                i = j * __NFDBITS;
-                if (i >= fdt->max_fdset || i >= fdt->max_fds)
-                        break;
-                set = fdt->open_fds->fds_bits[j++];
-                while (set) {
-                        if (set & 1) {
-                                struct file *file = fdt->fd[i];
-                                if (file)
-                                        __steal_locks(file, from);
-                        }
-                        i++;
-                        set >>= 1;
-                }
-        }
-        spin_unlock(&files->file_lock);
-        unlock_kernel();
-}
-EXPORT_SYMBOL(steal_locks);
-
 static int __init filelock_init(void)
 {
         filelock_cache = kmem_cache_create("file_lock_cache",
diff --git a/include/linux/fs.h b/include/linux/fs.h
index ecc8c2c3d8ca..73c7d6f04b31 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -782,7 +782,6 @@ extern int setlease(struct file *, long, struct file_lock **);
 extern int lease_modify(struct file_lock **, int);
 extern int lock_may_read(struct inode *, loff_t start, unsigned long count);
 extern int lock_may_write(struct inode *, loff_t start, unsigned long count);
-extern void steal_locks(fl_owner_t from);
 
 struct fasync_struct {
         int     magic;