Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (38 commits)
  direct I/O fallback sync simplification
  ocfs: stop using do_sync_mapping_range
  cleanup blockdev_direct_IO locking
  make generic_acl slightly more generic
  sanitize xattr handler prototypes
  libfs: move EXPORT_SYMBOL for d_alloc_name
  vfs: force reval of target when following LAST_BIND symlinks (try #7)
  ima: limit imbalance msg
  Untangling ima mess, part 3: kill dead code in ima
  Untangling ima mess, part 2: deal with counters
  Untangling ima mess, part 1: alloc_file()
  O_TRUNC open shouldn't fail after file truncation
  ima: call ima_inode_free ima_inode_free
  IMA: clean up the IMA counts updating code
  ima: only insert at inode creation time
  ima: valid return code from ima_inode_alloc
  fs: move get_empty_filp() deffinition to internal.h
  Sanitize exec_permission_lite()
  Kill cached_lookup() and real_lookup()
  Kill path_lookup_open()
  ...

Trivial conflicts in fs/direct-io.c

4 files changed, 37 insertions, 221 deletions

diff --git a/mm/Makefile b/mm/Makefile
index 82131d0f8d85..7a68d2ab5560 100644
--- a/mm/Makefile
+++ b/mm/Makefile
@@ -22,7 +22,6 @@ obj-$(CONFIG_HUGETLBFS)	+= hugetlb.o
 obj-$(CONFIG_NUMA)      += mempolicy.o
 obj-$(CONFIG_SPARSEMEM) += sparse.o
 obj-$(CONFIG_SPARSEMEM_VMEMMAP) += sparse-vmemmap.o
-obj-$(CONFIG_TMPFS_POSIX_ACL) += shmem_acl.o
 obj-$(CONFIG_SLOB) += slob.o
 obj-$(CONFIG_MMU_NOTIFIER) += mmu_notifier.o
 obj-$(CONFIG_KSM) += ksm.o
diff --git a/mm/filemap.c b/mm/filemap.c
index 8b4d88f9249e..96ac6b0eb6cb 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2240,7 +2240,6 @@ generic_file_buffered_write(struct kiocb *iocb, const struct iovec *iov,
                 size_t count, ssize_t written)
 {
         struct file *file = iocb->ki_filp;
-        struct address_space *mapping = file->f_mapping;
         ssize_t status;
         struct iov_iter i;
 
@@ -2252,15 +2251,6 @@ generic_file_buffered_write(struct kiocb *iocb, const struct iovec *iov,
                 *ppos = pos + status;
         }
         
-        /*
-         * If we get here for O_DIRECT writes then we must have fallen through
-         * to buffered writes (block instantiation inside i_size).  So we sync
-         * the file data here, to try to honour O_DIRECT expectations.
-         */
-        if (unlikely(file->f_flags & O_DIRECT) && written)
-                status = filemap_write_and_wait_range(mapping,
-                                        pos, pos + written - 1);
-
         return written ? written : status;
 }
 EXPORT_SYMBOL(generic_file_buffered_write);
@@ -2359,10 +2349,7 @@ ssize_t __generic_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
                  * semantics.
                  */
                 endbyte = pos + written_buffered - written - 1;
-                err = do_sync_mapping_range(file->f_mapping, pos, endbyte,
-                                            SYNC_FILE_RANGE_WAIT_BEFORE|
-                                            SYNC_FILE_RANGE_WRITE|
-                                            SYNC_FILE_RANGE_WAIT_AFTER);
+                err = filemap_write_and_wait_range(file->f_mapping, pos, endbyte);
                 if (err == 0) {
                         written = written_buffered;
                         invalidate_mapping_pages(mapping,
diff --git a/mm/shmem.c b/mm/shmem.c
index 4fb41c83daca..f8485062f3ba 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -29,7 +29,6 @@
 #include <linux/mm.h>
 #include <linux/module.h>
 #include <linux/swap.h>
-#include <linux/ima.h>
 
 static struct vfsmount *shm_mnt;
 
@@ -42,6 +41,7 @@ static struct vfsmount *shm_mnt;
 
 #include <linux/xattr.h>
 #include <linux/exportfs.h>
+#include <linux/posix_acl.h>
 #include <linux/generic_acl.h>
 #include <linux/mman.h>
 #include <linux/string.h>
@@ -810,7 +810,7 @@ static int shmem_notify_change(struct dentry *dentry, struct iattr *attr)
                 error = inode_setattr(inode, attr);
 #ifdef CONFIG_TMPFS_POSIX_ACL
         if (!error && (attr->ia_valid & ATTR_MODE))
-                error = generic_acl_chmod(inode, &shmem_acl_ops);
+                error = generic_acl_chmod(inode);
 #endif
         if (page)
                 page_cache_release(page);
@@ -1824,11 +1824,13 @@ shmem_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
                                 return error;
                         }
                 }
-                error = shmem_acl_init(inode, dir);
+#ifdef CONFIG_TMPFS_POSIX_ACL
+                error = generic_acl_init(inode, dir);
                 if (error) {
                         iput(inode);
                         return error;
                 }
+#endif
                 if (dir->i_mode & S_ISGID) {
                         inode->i_gid = dir->i_gid;
                         if (S_ISDIR(mode))
@@ -2043,27 +2045,28 @@ static const struct inode_operations shmem_symlink_inode_operations = {
  * filesystem level, though.
  */
 
-static size_t shmem_xattr_security_list(struct inode *inode, char *list,
+static size_t shmem_xattr_security_list(struct dentry *dentry, char *list,
                                         size_t list_len, const char *name,
-                                        size_t name_len)
+                                        size_t name_len, int handler_flags)
 {
-        return security_inode_listsecurity(inode, list, list_len);
+        return security_inode_listsecurity(dentry->d_inode, list, list_len);
 }
 
-static int shmem_xattr_security_get(struct inode *inode, const char *name,
-                                    void *buffer, size_t size)
+static int shmem_xattr_security_get(struct dentry *dentry, const char *name,
+                void *buffer, size_t size, int handler_flags)
 {
         if (strcmp(name, "") == 0)
                 return -EINVAL;
-        return xattr_getsecurity(inode, name, buffer, size);
+        return xattr_getsecurity(dentry->d_inode, name, buffer, size);
 }
 
-static int shmem_xattr_security_set(struct inode *inode, const char *name,
-                                    const void *value, size_t size, int flags)
+static int shmem_xattr_security_set(struct dentry *dentry, const char *name,
+                const void *value, size_t size, int flags, int handler_flags)
 {
         if (strcmp(name, "") == 0)
                 return -EINVAL;
-        return security_inode_setsecurity(inode, name, value, size, flags);
+        return security_inode_setsecurity(dentry->d_inode, name, value,
+                                          size, flags);
 }
 
 static struct xattr_handler shmem_xattr_security_handler = {
@@ -2074,8 +2077,8 @@ static struct xattr_handler shmem_xattr_security_handler = {
 };
 
 static struct xattr_handler *shmem_xattr_handlers[] = {
-        &shmem_xattr_acl_access_handler,
-        &shmem_xattr_acl_default_handler,
+        &generic_acl_access_handler,
+        &generic_acl_default_handler,
         &shmem_xattr_security_handler,
         NULL
 };
@@ -2454,7 +2457,7 @@ static const struct inode_operations shmem_inode_operations = {
         .getxattr       = generic_getxattr,
         .listxattr      = generic_listxattr,
         .removexattr    = generic_removexattr,
-        .check_acl      = shmem_check_acl,
+        .check_acl      = generic_check_acl,
 #endif
 
 };
@@ -2477,7 +2480,7 @@ static const struct inode_operations shmem_dir_inode_operations = {
         .getxattr       = generic_getxattr,
         .listxattr      = generic_listxattr,
         .removexattr    = generic_removexattr,
-        .check_acl      = shmem_check_acl,
+        .check_acl      = generic_check_acl,
 #endif
 };
 
@@ -2488,7 +2491,7 @@ static const struct inode_operations shmem_special_inode_operations = {
         .getxattr       = generic_getxattr,
         .listxattr      = generic_listxattr,
         .removexattr    = generic_removexattr,
-        .check_acl      = shmem_check_acl,
+        .check_acl      = generic_check_acl,
 #endif
 };
 
@@ -2626,7 +2629,8 @@ struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags
         int error;
         struct file *file;
         struct inode *inode;
-        struct dentry *dentry, *root;
+        struct path path;
+        struct dentry *root;
         struct qstr this;
 
         if (IS_ERR(shm_mnt))
@@ -2643,38 +2647,35 @@ struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags
         this.len = strlen(name);
         this.hash = 0; /* will go */
         root = shm_mnt->mnt_root;
-        dentry = d_alloc(root, &this);
-        if (!dentry)
+        path.dentry = d_alloc(root, &this);
+        if (!path.dentry)
                 goto put_memory;
-
-        error = -ENFILE;
-        file = get_empty_filp();
-        if (!file)
-                goto put_dentry;
+        path.mnt = mntget(shm_mnt);
 
         error = -ENOSPC;
         inode = shmem_get_inode(root->d_sb, S_IFREG | S_IRWXUGO, 0, flags);
         if (!inode)
-                goto close_file;
+                goto put_dentry;
 
-        d_instantiate(dentry, inode);
+        d_instantiate(path.dentry, inode);
         inode->i_size = size;
         inode->i_nlink = 0;     /* It is unlinked */
-        init_file(file, shm_mnt, dentry, FMODE_WRITE | FMODE_READ,
-                  &shmem_file_operations);
-
 #ifndef CONFIG_MMU
         error = ramfs_nommu_expand_for_mapping(inode, size);
         if (error)
-                goto close_file;
+                goto put_dentry;
 #endif
-        ima_counts_get(file);
+
+        error = -ENFILE;
+        file = alloc_file(&path, FMODE_WRITE | FMODE_READ,
+                  &shmem_file_operations);
+        if (!file)
+                goto put_dentry;
+
         return file;
 
-close_file:
-        put_filp(file);
 put_dentry:
-        dput(dentry);
+        path_put(&path);
 put_memory:
         shmem_unacct_size(flags, size);
         return ERR_PTR(error);
diff --git a/mm/shmem_acl.c b/mm/shmem_acl.c
deleted file mode 100644
index df2c87fdae50..000000000000
--- a/mm/shmem_acl.c
+++ /dev/null
@@ -1,171 +0,0 @@
-/*
- * mm/shmem_acl.c
- *
- * (C) 2005 Andreas Gruenbacher <agruen@suse.de>
- *
- * This file is released under the GPL.
- */
-
-#include <linux/fs.h>
-#include <linux/shmem_fs.h>
-#include <linux/xattr.h>
-#include <linux/generic_acl.h>
-
-/**
- * shmem_get_acl  -   generic_acl_operations->getacl() operation
- */
-static struct posix_acl *
-shmem_get_acl(struct inode *inode, int type)
-{
-        struct posix_acl *acl = NULL;
-
-        spin_lock(&inode->i_lock);
-        switch(type) {
-                case ACL_TYPE_ACCESS:
-                        acl = posix_acl_dup(inode->i_acl);
-                        break;
-
-                case ACL_TYPE_DEFAULT:
-                        acl = posix_acl_dup(inode->i_default_acl);
-                        break;
-        }
-        spin_unlock(&inode->i_lock);
-
-        return acl;
-}
-
-/**
- * shmem_set_acl  -   generic_acl_operations->setacl() operation
- */
-static void
-shmem_set_acl(struct inode *inode, int type, struct posix_acl *acl)
-{
-        struct posix_acl *free = NULL;
-
-        spin_lock(&inode->i_lock);
-        switch(type) {
-                case ACL_TYPE_ACCESS:
-                        free = inode->i_acl;
-                        inode->i_acl = posix_acl_dup(acl);
-                        break;
-
-                case ACL_TYPE_DEFAULT:
-                        free = inode->i_default_acl;
-                        inode->i_default_acl = posix_acl_dup(acl);
-                        break;
-        }
-        spin_unlock(&inode->i_lock);
-        posix_acl_release(free);
-}
-
-struct generic_acl_operations shmem_acl_ops = {
-        .getacl = shmem_get_acl,
-        .setacl = shmem_set_acl,
-};
-
-/**
- * shmem_list_acl_access, shmem_get_acl_access, shmem_set_acl_access,
- * shmem_xattr_acl_access_handler  -  plumbing code to implement the
- * system.posix_acl_access xattr using the generic acl functions.
- */
-
-static size_t
-shmem_list_acl_access(struct inode *inode, char *list, size_t list_size,
-                      const char *name, size_t name_len)
-{
-        return generic_acl_list(inode, &shmem_acl_ops, ACL_TYPE_ACCESS,
-                                list, list_size);
-}
-
-static int
-shmem_get_acl_access(struct inode *inode, const char *name, void *buffer,
-                     size_t size)
-{
-        if (strcmp(name, "") != 0)
-                return -EINVAL;
-        return generic_acl_get(inode, &shmem_acl_ops, ACL_TYPE_ACCESS, buffer,
-                               size);
-}
-
-static int
-shmem_set_acl_access(struct inode *inode, const char *name, const void *value,
-                     size_t size, int flags)
-{
-        if (strcmp(name, "") != 0)
-                return -EINVAL;
-        return generic_acl_set(inode, &shmem_acl_ops, ACL_TYPE_ACCESS, value,
-                               size);
-}
-
-struct xattr_handler shmem_xattr_acl_access_handler = {
-        .prefix = POSIX_ACL_XATTR_ACCESS,
-        .list   = shmem_list_acl_access,
-        .get    = shmem_get_acl_access,
-        .set    = shmem_set_acl_access,
-};
-
-/**
- * shmem_list_acl_default, shmem_get_acl_default, shmem_set_acl_default,
- * shmem_xattr_acl_default_handler  -  plumbing code to implement the
- * system.posix_acl_default xattr using the generic acl functions.
- */
-
-static size_t
-shmem_list_acl_default(struct inode *inode, char *list, size_t list_size,
-                       const char *name, size_t name_len)
-{
-        return generic_acl_list(inode, &shmem_acl_ops, ACL_TYPE_DEFAULT,
-                                list, list_size);
-}
-
-static int
-shmem_get_acl_default(struct inode *inode, const char *name, void *buffer,
-                      size_t size)
-{
-        if (strcmp(name, "") != 0)
-                return -EINVAL;
-        return generic_acl_get(inode, &shmem_acl_ops, ACL_TYPE_DEFAULT, buffer,
-                               size);
-}
-
-static int
-shmem_set_acl_default(struct inode *inode, const char *name, const void *value,
-                      size_t size, int flags)
-{
-        if (strcmp(name, "") != 0)
-                return -EINVAL;
-        return generic_acl_set(inode, &shmem_acl_ops, ACL_TYPE_DEFAULT, value,
-                               size);
-}
-
-struct xattr_handler shmem_xattr_acl_default_handler = {
-        .prefix = POSIX_ACL_XATTR_DEFAULT,
-        .list   = shmem_list_acl_default,
-        .get    = shmem_get_acl_default,
-        .set    = shmem_set_acl_default,
-};
-
-/**
- * shmem_acl_init  -  Inizialize the acl(s) of a new inode
- */
-int
-shmem_acl_init(struct inode *inode, struct inode *dir)
-{
-        return generic_acl_init(inode, dir, &shmem_acl_ops);
-}
-
-/**
- * shmem_check_acl  -  check_acl() callback for generic_permission()
- */
-int
-shmem_check_acl(struct inode *inode, int mask)
-{
-        struct posix_acl *acl = shmem_get_acl(inode, ACL_TYPE_ACCESS);
-
-        if (acl) {
-                int error = posix_acl_permission(inode, acl, mask);
-                posix_acl_release(acl);
-                return error;
-        }
-        return -EAGAIN;
-}