Merge branch 'mpi-master' into wip-k-fmlpwip-k-fmlp

Conflicts:
	litmus/sched_cedf.c

1 files changed, 33 insertions, 30 deletions

diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c
index 622c95140802..4ec9eb00a241 100644
--- a/fs/ecryptfs/file.c
+++ b/fs/ecryptfs/file.c
@@ -31,7 +31,6 @@
 #include <linux/security.h>
 #include <linux/compat.h>
 #include <linux/fs_stack.h>
-#include <linux/smp_lock.h>
 #include "ecryptfs_kernel.h"
 
 /**
@@ -48,7 +47,7 @@ static ssize_t ecryptfs_read_update_atime(struct kiocb *iocb,
                                 const struct iovec *iov,
                                 unsigned long nr_segs, loff_t pos)
 {
-        int rc;
+        ssize_t rc;
         struct dentry *lower_dentry;
         struct vfsmount *lower_vfsmount;
         struct file *file = iocb->ki_filp;
@@ -192,22 +191,20 @@ static int ecryptfs_open(struct inode *inode, struct file *file)
                                       | ECRYPTFS_ENCRYPTED);
         }
         mutex_unlock(&crypt_stat->cs_mutex);
-        if (!ecryptfs_inode_to_private(inode)->lower_file) {
-                rc = ecryptfs_init_persistent_file(ecryptfs_dentry);
-                if (rc) {
-                        printk(KERN_ERR "%s: Error attempting to initialize "
-                               "the persistent file for the dentry with name "
-                               "[%s]; rc = [%d]\n", __func__,
-                               ecryptfs_dentry->d_name.name, rc);
-                        goto out_free;
-                }
+        rc = ecryptfs_get_lower_file(ecryptfs_dentry, inode);
+        if (rc) {
+                printk(KERN_ERR "%s: Error attempting to initialize "
+                        "the lower file for the dentry with name "
+                        "[%s]; rc = [%d]\n", __func__,
+                        ecryptfs_dentry->d_name.name, rc);
+                goto out_free;
         }
-        if ((ecryptfs_inode_to_private(inode)->lower_file->f_flags & O_RDONLY)
-            && !(file->f_flags & O_RDONLY)) {
+        if ((ecryptfs_inode_to_private(inode)->lower_file->f_flags & O_ACCMODE)
+            == O_RDONLY && (file->f_flags & O_ACCMODE) != O_RDONLY) {
                 rc = -EPERM;
-                printk(KERN_WARNING "%s: Lower persistent file is RO; eCryptfs "
+                printk(KERN_WARNING "%s: Lower file is RO; eCryptfs "
                        "file must hence be opened RO\n", __func__);
-                goto out_free;
+                goto out_put;
         }
         ecryptfs_set_file_lower(
                 file, ecryptfs_inode_to_private(inode)->lower_file);
@@ -235,19 +232,22 @@ static int ecryptfs_open(struct inode *inode, struct file *file)
                                        "Plaintext passthrough mode is not "
                                        "enabled; returning -EIO\n");
                                 mutex_unlock(&crypt_stat->cs_mutex);
-                                goto out_free;
+                                goto out_put;
                         }
                         rc = 0;
-                        crypt_stat->flags &= ~(ECRYPTFS_ENCRYPTED);
+                        crypt_stat->flags &= ~(ECRYPTFS_I_SIZE_INITIALIZED
+                                               | ECRYPTFS_ENCRYPTED);
                         mutex_unlock(&crypt_stat->cs_mutex);
                         goto out;
                 }
         }
         mutex_unlock(&crypt_stat->cs_mutex);
-        ecryptfs_printk(KERN_DEBUG, "inode w/ addr = [0x%p], i_ino = [0x%.16x] "
-                        "size: [0x%.16x]\n", inode, inode->i_ino,
-                        i_size_read(inode));
+        ecryptfs_printk(KERN_DEBUG, "inode w/ addr = [0x%p], i_ino = "
+                        "[0x%.16lx] size: [0x%.16llx]\n", inode, inode->i_ino,
+                        (unsigned long long)i_size_read(inode));
         goto out;
+out_put:
+        ecryptfs_put_lower_file(inode);
 out_free:
         kmem_cache_free(ecryptfs_file_info_cache,
                         ecryptfs_file_to_private(file));
@@ -257,17 +257,13 @@ out:
 
 static int ecryptfs_flush(struct file *file, fl_owner_t td)
 {
-        int rc = 0;
-        struct file *lower_file = NULL;
-
-        lower_file = ecryptfs_file_to_lower(file);
-        if (lower_file->f_op && lower_file->f_op->flush)
-                rc = lower_file->f_op->flush(lower_file, td);
-        return rc;
+        return file->f_mode & FMODE_WRITE
+               ? filemap_write_and_wait(file->f_mapping) : 0;
 }
 
 static int ecryptfs_release(struct inode *inode, struct file *file)
 {
+        ecryptfs_put_lower_file(inode);
         kmem_cache_free(ecryptfs_file_info_cache,
                         ecryptfs_file_to_private(file));
         return 0;
@@ -276,7 +272,14 @@ static int ecryptfs_release(struct inode *inode, struct file *file)
 static int
 ecryptfs_fsync(struct file *file, int datasync)
 {
-        return vfs_fsync(ecryptfs_file_to_lower(file), datasync);
+        int rc = 0;
+
+        rc = generic_file_fsync(file, datasync);
+        if (rc)
+                goto out;
+        rc = vfs_fsync(ecryptfs_file_to_lower(file), datasync);
+out:
+        return rc;
 }
 
 static int ecryptfs_fasync(int fd, struct file *file, int flag)
@@ -284,11 +287,9 @@ static int ecryptfs_fasync(int fd, struct file *file, int flag)
         int rc = 0;
         struct file *lower_file = NULL;
 
-        lock_kernel();
         lower_file = ecryptfs_file_to_lower(file);
         if (lower_file->f_op && lower_file->f_op->fasync)
                 rc = lower_file->f_op->fasync(fd, lower_file, flag);
-        unlock_kernel();
         return rc;
 }
 
@@ -322,6 +323,7 @@ ecryptfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 
 const struct file_operations ecryptfs_dir_fops = {
         .readdir = ecryptfs_readdir,
+        .read = generic_read_dir,
         .unlocked_ioctl = ecryptfs_unlocked_ioctl,
 #ifdef CONFIG_COMPAT
         .compat_ioctl = ecryptfs_compat_ioctl,
@@ -332,6 +334,7 @@ const struct file_operations ecryptfs_dir_fops = {
         .fsync = ecryptfs_fsync,
         .fasync = ecryptfs_fasync,
         .splice_read = generic_file_splice_read,
+        .llseek = default_llseek,
 };
 
 const struct file_operations ecryptfs_main_fops = {