Merge commit 'v2.6.39' into for-2.6.40/core

Since for-2.6.40/core was forked off the 2.6.39 devel tree, we've
had churn in the core area that makes it difficult to handle
patches for eg cfq or blk-throttle. Instead of requiring that they
be based in older versions with bugs that have been fixed later
in the rc cycle, merge in 2.6.39 final.

Also fixes up conflicts in the below files.

Conflicts:
	drivers/block/paride/pcd.c
	drivers/cdrom/viocd.c
	drivers/ide/ide-cd.c

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

1 files changed, 51 insertions, 67 deletions

diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c
index c89b40808587..98580a3b5005 100644
--- a/fs/hpfs/super.c
+++ b/fs/hpfs/super.c
@@ -18,15 +18,16 @@
 
 /* Mark the filesystem dirty, so that chkdsk checks it when os/2 booted */
 
-static void mark_dirty(struct super_block *s)
+static void mark_dirty(struct super_block *s, int remount)
 {
-	if (hpfs_sb(s)->sb_chkdsk && !(s->s_flags & MS_RDONLY)) {
+	if (hpfs_sb(s)->sb_chkdsk && (remount || !(s->s_flags & MS_RDONLY))) {
 		struct buffer_head *bh;
 		struct hpfs_spare_block *sb;
 		if ((sb = hpfs_map_sector(s, 17, &bh, 0))) {
 			sb->dirty = 1;
 			sb->old_wrote = 0;
 			mark_buffer_dirty(bh);
+			sync_dirty_buffer(bh);
 			brelse(bh);
 		}
 	}
@@ -40,10 +41,12 @@ static void unmark_dirty(struct super_block *s)
 	struct buffer_head *bh;
 	struct hpfs_spare_block *sb;
 	if (s->s_flags & MS_RDONLY) return;
+	sync_blockdev(s->s_bdev);
 	if ((sb = hpfs_map_sector(s, 17, &bh, 0))) {
 		sb->dirty = hpfs_sb(s)->sb_chkdsk > 1 - hpfs_sb(s)->sb_was_error;
 		sb->old_wrote = hpfs_sb(s)->sb_chkdsk >= 2 && !hpfs_sb(s)->sb_was_error;
 		mark_buffer_dirty(bh);
+		sync_dirty_buffer(bh);
 		brelse(bh);
 	}
 }
@@ -63,13 +66,13 @@ void hpfs_error(struct super_block *s, const char *fmt, ...)
 	if (!hpfs_sb(s)->sb_was_error) {
 		if (hpfs_sb(s)->sb_err == 2) {
 			printk("; crashing the system because you wanted it\n");
-			mark_dirty(s);
+			mark_dirty(s, 0);
 			panic("HPFS panic");
 		} else if (hpfs_sb(s)->sb_err == 1) {
 			if (s->s_flags & MS_RDONLY) printk("; already mounted read-only\n");
 			else {
 				printk("; remounting read-only\n");
-				mark_dirty(s);
+				mark_dirty(s, 0);
 				s->s_flags |= MS_RDONLY;
 			}
 		} else if (s->s_flags & MS_RDONLY) printk("; going on - but anything won't be destroyed because it's read-only\n");
@@ -102,9 +105,12 @@ static void hpfs_put_super(struct super_block *s)
 {
 	struct hpfs_sb_info *sbi = hpfs_sb(s);
 
+	hpfs_lock(s);
+	unmark_dirty(s);
+	hpfs_unlock(s);
+
 	kfree(sbi->sb_cp_table);
 	kfree(sbi->sb_bmp_dir);
-	unmark_dirty(s);
 	s->s_fs_info = NULL;
 	kfree(sbi);
 }
@@ -129,7 +135,7 @@ static unsigned count_bitmaps(struct super_block *s)
 	n_bands = (hpfs_sb(s)->sb_fs_size + 0x3fff) >> 14;
 	count = 0;
 	for (n = 0; n < n_bands; n++)
-		count += hpfs_count_one_bitmap(s, hpfs_sb(s)->sb_bmp_dir[n]);
+		count += hpfs_count_one_bitmap(s, le32_to_cpu(hpfs_sb(s)->sb_bmp_dir[n]));
 	return count;
 }
 
@@ -188,8 +194,6 @@ static void init_once(void *foo)
 {
 	struct hpfs_inode_info *ei = (struct hpfs_inode_info *) foo;
 
-	mutex_init(&ei->i_mutex);
-	mutex_init(&ei->i_parent_mutex);
 	inode_init_once(&ei->vfs_inode);
 }
 
@@ -218,7 +222,6 @@ static void destroy_inodecache(void)
 
 enum {
 	Opt_help, Opt_uid, Opt_gid, Opt_umask, Opt_case_lower, Opt_case_asis,
-	Opt_conv_binary, Opt_conv_text, Opt_conv_auto,
 	Opt_check_none, Opt_check_normal, Opt_check_strict,
 	Opt_err_cont, Opt_err_ro, Opt_err_panic,
 	Opt_eas_no, Opt_eas_ro, Opt_eas_rw,
@@ -233,9 +236,6 @@ static const match_table_t tokens = {
 	{Opt_umask, "umask=%o"},
 	{Opt_case_lower, "case=lower"},
 	{Opt_case_asis, "case=asis"},
-	{Opt_conv_binary, "conv=binary"},
-	{Opt_conv_text, "conv=text"},
-	{Opt_conv_auto, "conv=auto"},
 	{Opt_check_none, "check=none"},
 	{Opt_check_normal, "check=normal"},
 	{Opt_check_strict, "check=strict"},
@@ -253,7 +253,7 @@ static const match_table_t tokens = {
 };
 
 static int parse_opts(char *opts, uid_t *uid, gid_t *gid, umode_t *umask,
-		      int *lowercase, int *conv, int *eas, int *chk, int *errs,
+		      int *lowercase, int *eas, int *chk, int *errs,
 		      int *chkdsk, int *timeshift)
 {
 	char *p;
@@ -295,15 +295,6 @@ static int parse_opts(char *opts, uid_t *uid, gid_t *gid, umode_t *umask,
 		case Opt_case_asis:
 			*lowercase = 0;
 			break;
-		case Opt_conv_binary:
-			*conv = CONV_BINARY;
-			break;
-		case Opt_conv_text:
-			*conv = CONV_TEXT;
-			break;
-		case Opt_conv_auto:
-			*conv = CONV_AUTO;
-			break;
 		case Opt_check_none:
 			*chk = 0;
 			break;
@@ -370,9 +361,6 @@ HPFS filesystem options:\n\
       umask=xxx         set mode of files that don't have mode specified in eas\n\
       case=lower        lowercase all files\n\
       case=asis         do not lowercase files (default)\n\
-      conv=binary       do not convert CR/LF -> LF (default)\n\
-      conv=auto         convert only files with known text extensions\n\
-      conv=text         convert all files\n\
       check=none        no fs checks - kernel may crash on corrupted filesystem\n\
       check=normal      do some checks - it should not crash (default)\n\
       check=strict      do extra time-consuming checks, used for debugging\n\
@@ -394,7 +382,7 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data)
 	uid_t uid;
 	gid_t gid;
 	umode_t umask;
-	int lowercase, conv, eas, chk, errs, chkdsk, timeshift;
+	int lowercase, eas, chk, errs, chkdsk, timeshift;
 	int o;
 	struct hpfs_sb_info *sbi = hpfs_sb(s);
 	char *new_opts = kstrdup(data, GFP_KERNEL);
@@ -405,11 +393,11 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data)
 	lock_super(s);
 	uid = sbi->sb_uid; gid = sbi->sb_gid;
 	umask = 0777 & ~sbi->sb_mode;
-	lowercase = sbi->sb_lowercase; conv = sbi->sb_conv;
+	lowercase = sbi->sb_lowercase;
 	eas = sbi->sb_eas; chk = sbi->sb_chk; chkdsk = sbi->sb_chkdsk;
 	errs = sbi->sb_err; timeshift = sbi->sb_timeshift;
 
-	if (!(o = parse_opts(data, &uid, &gid, &umask, &lowercase, &conv,
+	if (!(o = parse_opts(data, &uid, &gid, &umask, &lowercase,
 	    &eas, &chk, &errs, &chkdsk, &timeshift))) {
 		printk("HPFS: bad mount options.\n");
 		goto out_err;
@@ -427,11 +415,11 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data)
 
 	sbi->sb_uid = uid; sbi->sb_gid = gid;
 	sbi->sb_mode = 0777 & ~umask;
-	sbi->sb_lowercase = lowercase; sbi->sb_conv = conv;
+	sbi->sb_lowercase = lowercase;
 	sbi->sb_eas = eas; sbi->sb_chk = chk; sbi->sb_chkdsk = chkdsk;
 	sbi->sb_err = errs; sbi->sb_timeshift = timeshift;
 
-	if (!(*flags & MS_RDONLY)) mark_dirty(s);
+	if (!(*flags & MS_RDONLY)) mark_dirty(s, 1);
 
 	replace_mount_options(s, new_opts);
 
@@ -471,7 +459,7 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent)
 	uid_t uid;
 	gid_t gid;
 	umode_t umask;
-	int lowercase, conv, eas, chk, errs, chkdsk, timeshift;
+	int lowercase, eas, chk, errs, chkdsk, timeshift;
 
 	dnode_secno root_dno;
 	struct hpfs_dirent *de = NULL;
@@ -479,11 +467,6 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent)
 
 	int o;
 
-	if (num_possible_cpus() > 1) {
-		printk(KERN_ERR "HPFS is not SMP safe\n");
-		return -EINVAL;
-	}
-
 	save_mount_options(s, options);
 
 	sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
@@ -495,20 +478,20 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent)
 	sbi->sb_bmp_dir = NULL;
 	sbi->sb_cp_table = NULL;
 
-	mutex_init(&sbi->hpfs_creation_de);
+	mutex_init(&sbi->hpfs_mutex);
+	hpfs_lock(s);
 
 	uid = current_uid();
 	gid = current_gid();
 	umask = current_umask();
 	lowercase = 0;
-	conv = CONV_BINARY;
 	eas = 2;
 	chk = 1;
 	errs = 1;
 	chkdsk = 1;
 	timeshift = 0;
 
-	if (!(o = parse_opts(options, &uid, &gid, &umask, &lowercase, &conv,
+	if (!(o = parse_opts(options, &uid, &gid, &umask, &lowercase,
 	    &eas, &chk, &errs, &chkdsk, &timeshift))) {
 		printk("HPFS: bad mount options.\n");
 		goto bail0;
@@ -526,9 +509,9 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent)
 	if (!(spareblock = hpfs_map_sector(s, 17, &bh2, 0))) goto bail3;
 
 	/* Check magics */
-	if (/*bootblock->magic != BB_MAGIC
-	    ||*/ superblock->magic != SB_MAGIC
-	    || spareblock->magic != SP_MAGIC) {
+	if (/*le16_to_cpu(bootblock->magic) != BB_MAGIC
+	    ||*/ le32_to_cpu(superblock->magic) != SB_MAGIC
+	    || le32_to_cpu(spareblock->magic) != SP_MAGIC) {
 		if (!silent) printk("HPFS: Bad magic ... probably not HPFS\n");
 		goto bail4;
 	}
@@ -549,19 +532,18 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent)
 	s->s_op = &hpfs_sops;
 	s->s_d_op = &hpfs_dentry_operations;
 
-	sbi->sb_root = superblock->root;
-	sbi->sb_fs_size = superblock->n_sectors;
-	sbi->sb_bitmaps = superblock->bitmaps;
-	sbi->sb_dirband_start = superblock->dir_band_start;
-	sbi->sb_dirband_size = superblock->n_dir_band;
-	sbi->sb_dmap = superblock->dir_band_bitmap;
+	sbi->sb_root = le32_to_cpu(superblock->root);
+	sbi->sb_fs_size = le32_to_cpu(superblock->n_sectors);
+	sbi->sb_bitmaps = le32_to_cpu(superblock->bitmaps);
+	sbi->sb_dirband_start = le32_to_cpu(superblock->dir_band_start);
+	sbi->sb_dirband_size = le32_to_cpu(superblock->n_dir_band);
+	sbi->sb_dmap = le32_to_cpu(superblock->dir_band_bitmap);
 	sbi->sb_uid = uid;
 	sbi->sb_gid = gid;
 	sbi->sb_mode = 0777 & ~umask;
 	sbi->sb_n_free = -1;
 	sbi->sb_n_free_dnodes = -1;
 	sbi->sb_lowercase = lowercase;
-	sbi->sb_conv = conv;
 	sbi->sb_eas = eas;
 	sbi->sb_chk = chk;
 	sbi->sb_chkdsk = chkdsk;
@@ -573,7 +555,7 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent)
 	sbi->sb_max_fwd_alloc = 0xffffff;
 	
 	/* Load bitmap directory */
-	if (!(sbi->sb_bmp_dir = hpfs_load_bitmap_directory(s, superblock->bitmaps)))
+	if (!(sbi->sb_bmp_dir = hpfs_load_bitmap_directory(s, le32_to_cpu(superblock->bitmaps))))
 		goto bail4;
 	
 	/* Check for general fs errors*/
@@ -591,20 +573,20 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent)
 		mark_buffer_dirty(bh2);
 	}
 
-	if (spareblock->hotfixes_used || spareblock->n_spares_used) {
+	if (le32_to_cpu(spareblock->hotfixes_used) || le32_to_cpu(spareblock->n_spares_used)) {
 		if (errs >= 2) {
 			printk("HPFS: Hotfixes not supported here, try chkdsk\n");
-			mark_dirty(s);
+			mark_dirty(s, 0);
 			goto bail4;
 		}
 		hpfs_error(s, "hotfixes not supported here, try chkdsk");
 		if (errs == 0) printk("HPFS: Proceeding, but your filesystem will be probably corrupted by this driver...\n");
 		else printk("HPFS: This driver may read bad files or crash when operating on disk with hotfixes.\n");
 	}
-	if (spareblock->n_dnode_spares != spareblock->n_dnode_spares_free) {
+	if (le32_to_cpu(spareblock->n_dnode_spares) != le32_to_cpu(spareblock->n_dnode_spares_free)) {
 		if (errs >= 2) {
 			printk("HPFS: Spare dnodes used, try chkdsk\n");
-			mark_dirty(s);
+			mark_dirty(s, 0);
 			goto bail4;
 		}
 		hpfs_error(s, "warning: spare dnodes used, try chkdsk");
@@ -612,26 +594,26 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent)
 	}
 	if (chk) {
 		unsigned a;
-		if (superblock->dir_band_end - superblock->dir_band_start + 1 != superblock->n_dir_band ||
-		    superblock->dir_band_end < superblock->dir_band_start || superblock->n_dir_band > 0x4000) {
+		if (le32_to_cpu(superblock->dir_band_end) - le32_to_cpu(superblock->dir_band_start) + 1 != le32_to_cpu(superblock->n_dir_band) ||
+		    le32_to_cpu(superblock->dir_band_end) < le32_to_cpu(superblock->dir_band_start) || le32_to_cpu(superblock->n_dir_band) > 0x4000) {
 			hpfs_error(s, "dir band size mismatch: dir_band_start==%08x, dir_band_end==%08x, n_dir_band==%08x",
-				superblock->dir_band_start, superblock->dir_band_end, superblock->n_dir_band);
+				le32_to_cpu(superblock->dir_band_start), le32_to_cpu(superblock->dir_band_end), le32_to_cpu(superblock->n_dir_band));
 			goto bail4;
 		}
 		a = sbi->sb_dirband_size;
 		sbi->sb_dirband_size = 0;
-		if (hpfs_chk_sectors(s, superblock->dir_band_start, superblock->n_dir_band, "dir_band") ||
-		    hpfs_chk_sectors(s, superblock->dir_band_bitmap, 4, "dir_band_bitmap") ||
-		    hpfs_chk_sectors(s, superblock->bitmaps, 4, "bitmaps")) {
-			mark_dirty(s);
+		if (hpfs_chk_sectors(s, le32_to_cpu(superblock->dir_band_start), le32_to_cpu(superblock->n_dir_band), "dir_band") ||
+		    hpfs_chk_sectors(s, le32_to_cpu(superblock->dir_band_bitmap), 4, "dir_band_bitmap") ||
+		    hpfs_chk_sectors(s, le32_to_cpu(superblock->bitmaps), 4, "bitmaps")) {
+			mark_dirty(s, 0);
 			goto bail4;
 		}
 		sbi->sb_dirband_size = a;
 	} else printk("HPFS: You really don't want any checks? You are crazy...\n");
 
 	/* Load code page table */
-	if (spareblock->n_code_pages)
-		if (!(sbi->sb_cp_table = hpfs_load_code_page(s, spareblock->code_page_dir)))
+	if (le32_to_cpu(spareblock->n_code_pages))
+		if (!(sbi->sb_cp_table = hpfs_load_code_page(s, le32_to_cpu(spareblock->code_page_dir))))
 			printk("HPFS: Warning: code page support is disabled\n");
 
 	brelse(bh2);
@@ -660,13 +642,13 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent)
 	if (!de)
 		hpfs_error(s, "unable to find root dir");
 	else {
-		root->i_atime.tv_sec = local_to_gmt(s, de->read_date);
+		root->i_atime.tv_sec = local_to_gmt(s, le32_to_cpu(de->read_date));
 		root->i_atime.tv_nsec = 0;
-		root->i_mtime.tv_sec = local_to_gmt(s, de->write_date);
+		root->i_mtime.tv_sec = local_to_gmt(s, le32_to_cpu(de->write_date));
 		root->i_mtime.tv_nsec = 0;
-		root->i_ctime.tv_sec = local_to_gmt(s, de->creation_date);
+		root->i_ctime.tv_sec = local_to_gmt(s, le32_to_cpu(de->creation_date));
 		root->i_ctime.tv_nsec = 0;
-		hpfs_i(root)->i_ea_size = de->ea_size;
+		hpfs_i(root)->i_ea_size = le16_to_cpu(de->ea_size);
 		hpfs_i(root)->i_parent_dir = root->i_ino;
 		if (root->i_size == -1)
 			root->i_size = 2048;
@@ -674,6 +656,7 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent)
 			root->i_blocks = 5;
 		hpfs_brelse4(&qbh);
 	}
+	hpfs_unlock(s);
 	return 0;
 
 bail4:	brelse(bh2);
@@ -681,6 +664,7 @@ bail3:	brelse(bh1);
 bail2:	brelse(bh0);
 bail1:
 bail0:
+	hpfs_unlock(s);
 	kfree(sbi->sb_bmp_dir);
 	kfree(sbi->sb_cp_table);
 	s->s_fs_info = NULL;