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

Conflicts:
	litmus/sched_cedf.c

1 files changed, 18 insertions, 54 deletions

diff --git a/fs/ntfs/super.c b/fs/ntfs/super.c
index 512806171bfa..b52706da4645 100644
--- a/fs/ntfs/super.c
+++ b/fs/ntfs/super.c
@@ -1,7 +1,7 @@
 /*
  * super.c - NTFS kernel super block handling. Part of the Linux-NTFS project.
  *
- * Copyright (c) 2001-2007 Anton Altaparmakov
+ * Copyright (c) 2001-2011 Anton Altaparmakov and Tuxera Inc.
  * Copyright (c) 2001,2002 Richard Russon
  *
  * This program/include file is free software; you can redistribute it and/or
@@ -30,7 +30,6 @@
 #include <linux/buffer_head.h>
 #include <linux/vfs.h>
 #include <linux/moduleparam.h>
-#include <linux/smp_lock.h>
 #include <linux/bitmap.h>
 
 #include "sysctl.h"
@@ -445,7 +444,6 @@ static int ntfs_remount(struct super_block *sb, int *flags, char *opt)
 
         ntfs_debug("Entering with remount options string: %s", opt);
 
-        lock_kernel();
 #ifndef NTFS_RW
         /* For read-only compiled driver, enforce read-only flag. */
         *flags |= MS_RDONLY;
@@ -460,7 +458,7 @@ static int ntfs_remount(struct super_block *sb, int *flags, char *opt)
          * the volume on boot and updates them.
          *
          * When remounting read-only, mark the volume clean if no volume errors
-         * have occured.
+         * have occurred.
          */
         if ((sb->s_flags & MS_RDONLY) && !(*flags & MS_RDONLY)) {
                 static const char *es = ".  Cannot remount read-write.";
@@ -469,18 +467,15 @@ static int ntfs_remount(struct super_block *sb, int *flags, char *opt)
                 if (NVolErrors(vol)) {
                         ntfs_error(sb, "Volume has errors and is read-only%s",
                                         es);
-                        unlock_kernel();
                         return -EROFS;
                 }
                 if (vol->vol_flags & VOLUME_IS_DIRTY) {
                         ntfs_error(sb, "Volume is dirty and read-only%s", es);
-                        unlock_kernel();
                         return -EROFS;
                 }
                 if (vol->vol_flags & VOLUME_MODIFIED_BY_CHKDSK) {
                         ntfs_error(sb, "Volume has been modified by chkdsk "
                                         "and is read-only%s", es);
-                        unlock_kernel();
                         return -EROFS;
                 }
                 if (vol->vol_flags & VOLUME_MUST_MOUNT_RO_MASK) {
@@ -488,13 +483,11 @@ static int ntfs_remount(struct super_block *sb, int *flags, char *opt)
                                         "(0x%x) and is read-only%s",
                                         (unsigned)le16_to_cpu(vol->vol_flags),
                                         es);
-                        unlock_kernel();
                         return -EROFS;
                 }
                 if (ntfs_set_volume_flags(vol, VOLUME_IS_DIRTY)) {
                         ntfs_error(sb, "Failed to set dirty bit in volume "
                                         "information flags%s", es);
-                        unlock_kernel();
                         return -EROFS;
                 }
 #if 0
@@ -514,21 +507,18 @@ static int ntfs_remount(struct super_block *sb, int *flags, char *opt)
                         ntfs_error(sb, "Failed to empty journal $LogFile%s",
                                         es);
                         NVolSetErrors(vol);
-                        unlock_kernel();
                         return -EROFS;
                 }
                 if (!ntfs_mark_quotas_out_of_date(vol)) {
                         ntfs_error(sb, "Failed to mark quotas out of date%s",
                                         es);
                         NVolSetErrors(vol);
-                        unlock_kernel();
                         return -EROFS;
                 }
                 if (!ntfs_stamp_usnjrnl(vol)) {
                         ntfs_error(sb, "Failed to stamp transation log "
                                         "($UsnJrnl)%s", es);
                         NVolSetErrors(vol);
-                        unlock_kernel();
                         return -EROFS;
                 }
         } else if (!(sb->s_flags & MS_RDONLY) && (*flags & MS_RDONLY)) {
@@ -544,11 +534,9 @@ static int ntfs_remount(struct super_block *sb, int *flags, char *opt)
 
         // TODO: Deal with *flags.
 
-        if (!parse_options(vol, opt)) {
-                unlock_kernel();
+        if (!parse_options(vol, opt))
                 return -EINVAL;
-        }
-        unlock_kernel();
+
         ntfs_debug("Done.");
         return 0;
 }
@@ -1281,7 +1269,7 @@ static int check_windows_hibernation_status(ntfs_volume *vol)
                                         "hibernated on the volume.");
                         return 0;
                 }
-                /* A real error occured. */
+                /* A real error occurred. */
                 ntfs_error(vol->sb, "Failed to find inode number for "
                                 "hiberfil.sys.");
                 return ret;
@@ -1382,7 +1370,7 @@ static bool load_and_init_quota(ntfs_volume *vol)
                         NVolSetQuotaOutOfDate(vol);
                         return true;
                 }
-                /* A real error occured. */
+                /* A real error occurred. */
                 ntfs_error(vol->sb, "Failed to find inode number for $Quota.");
                 return false;
         }
@@ -1466,7 +1454,7 @@ not_enabled:
                         NVolSetUsnJrnlStamped(vol);
                         return true;
                 }
-                /* A real error occured. */
+                /* A real error occurred. */
                 ntfs_error(vol->sb, "Failed to find inode number for "
                                 "$UsnJrnl.");
                 return false;
@@ -2261,8 +2249,6 @@ static void ntfs_put_super(struct super_block *sb)
 
         ntfs_debug("Entering.");
 
-        lock_kernel();
-
 #ifdef NTFS_RW
         /*
          * Commit all inodes while they are still open in case some of them
@@ -2306,7 +2292,7 @@ static void ntfs_put_super(struct super_block *sb)
         ntfs_commit_inode(vol->mft_ino);
 
         /*
-         * If a read-write mount and no volume errors have occured, mark the
+         * If a read-write mount and no volume errors have occurred, mark the
          * volume clean.  Also, re-commit all affected inodes.
          */
         if (!(sb->s_flags & MS_RDONLY)) {
@@ -2433,8 +2419,6 @@ static void ntfs_put_super(struct super_block *sb)
 
         sb->s_fs_info = NULL;
         kfree(vol);
-
-        unlock_kernel();
 }
 
 /**
@@ -2512,7 +2496,7 @@ static s64 get_nr_free_clusters(ntfs_volume *vol)
         if (vol->nr_clusters & 63)
                 nr_free += 64 - (vol->nr_clusters & 63);
         up_read(&vol->lcnbmp_lock);
-        /* If errors occured we may well have gone below zero, fix this. */
+        /* If errors occurred we may well have gone below zero, fix this. */
         if (nr_free < 0)
                 nr_free = 0;
         ntfs_debug("Exiting.");
@@ -2577,7 +2561,7 @@ static unsigned long __get_nr_free_mft_records(ntfs_volume *vol,
         }
         ntfs_debug("Finished reading $MFT/$BITMAP, last index = 0x%lx.",
                         index - 1);
-        /* If errors occured we may well have gone below zero, fix this. */
+        /* If errors occurred we may well have gone below zero, fix this. */
         if (nr_free < 0)
                 nr_free = 0;
         ntfs_debug("Exiting.");
@@ -2772,8 +2756,6 @@ static int ntfs_fill_super(struct super_block *sb, void *opt, const int silent)
         init_rwsem(&vol->mftbmp_lock);
         init_rwsem(&vol->lcnbmp_lock);
 
-        unlock_kernel();
-
         /* By default, enable sparse support. */
         NVolSetSparseEnabled(vol);
 
@@ -2929,8 +2911,8 @@ static int ntfs_fill_super(struct super_block *sb, void *opt, const int silent)
                 goto unl_upcase_iput_tmp_ino_err_out_now;
         }
         if ((sb->s_root = d_alloc_root(vol->root_ino))) {
-                /* We increment i_count simulating an ntfs_iget(). */
-                atomic_inc(&vol->root_ino->i_count);
+                /* We grab a reference, simulating an ntfs_iget(). */
+                ihold(vol->root_ino);
                 ntfs_debug("Exiting, status successful.");
                 /* Release the default upcase if it has no users. */
                 mutex_lock(&ntfs_lock);
@@ -2940,7 +2922,6 @@ static int ntfs_fill_super(struct super_block *sb, void *opt, const int silent)
                 }
                 mutex_unlock(&ntfs_lock);
                 sb->s_export_op = &ntfs_export_ops;
-                lock_kernel();
                 lockdep_on();
                 return 0;
         }
@@ -3040,24 +3021,8 @@ iput_tmp_ino_err_out_now:
         if (vol->mft_ino && vol->mft_ino != tmp_ino)
                 iput(vol->mft_ino);
         vol->mft_ino = NULL;
-        /*
-         * This is needed to get ntfs_clear_extent_inode() called for each
-         * inode we have ever called ntfs_iget()/iput() on, otherwise we A)
-         * leak resources and B) a subsequent mount fails automatically due to
-         * ntfs_iget() never calling down into our ntfs_read_locked_inode()
-         * method again... FIXME: Do we need to do this twice now because of
-         * attribute inodes? I think not, so leave as is for now... (AIA)
-         */
-        if (invalidate_inodes(sb)) {
-                ntfs_error(sb, "Busy inodes left. This is most likely a NTFS "
-                                "driver bug.");
-                /* Copied from fs/super.c. I just love this message. (-; */
-                printk("NTFS: Busy inodes after umount. Self-destruct in 5 "
-                                "seconds.  Have a nice day...\n");
-        }
         /* Errors at this stage are irrelevant. */
 err_out_now:
-        lock_kernel();
         sb->s_fs_info = NULL;
         kfree(vol);
         ntfs_debug("Failed, returning -EINVAL.");
@@ -3094,17 +3059,16 @@ struct kmem_cache *ntfs_index_ctx_cache;
 /* Driver wide mutex. */
 DEFINE_MUTEX(ntfs_lock);
 
-static int ntfs_get_sb(struct file_system_type *fs_type,
-        int flags, const char *dev_name, void *data, struct vfsmount *mnt)
+static struct dentry *ntfs_mount(struct file_system_type *fs_type,
+        int flags, const char *dev_name, void *data)
 {
-        return get_sb_bdev(fs_type, flags, dev_name, data, ntfs_fill_super,
-                           mnt);
+        return mount_bdev(fs_type, flags, dev_name, data, ntfs_fill_super);
 }
 
 static struct file_system_type ntfs_fs_type = {
         .owner          = THIS_MODULE,
         .name           = "ntfs",
-        .get_sb         = ntfs_get_sb,
+        .mount          = ntfs_mount,
         .kill_sb        = kill_block_super,
         .fs_flags       = FS_REQUIRES_DEV,
 };
@@ -3229,8 +3193,8 @@ static void __exit exit_ntfs_fs(void)
         ntfs_sysctl(0);
 }
 
-MODULE_AUTHOR("Anton Altaparmakov <aia21@cantab.net>");
-MODULE_DESCRIPTION("NTFS 1.2/3.x driver - Copyright (c) 2001-2007 Anton Altaparmakov");
+MODULE_AUTHOR("Anton Altaparmakov <anton@tuxera.com>");
+MODULE_DESCRIPTION("NTFS 1.2/3.x driver - Copyright (c) 2001-2011 Anton Altaparmakov and Tuxera Inc.");
 MODULE_VERSION(NTFS_VERSION);
 MODULE_LICENSE("GPL");
 #ifdef DEBUG