Merge branch 'master' of /usr/src/ntfs-2.6/

40 files changed, 283 insertions, 272 deletions

diff --git a/fs/Kconfig b/fs/Kconfig
index 48f5422cb19a..01a295232f75 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -810,7 +810,7 @@ config TMPFS
 
 config HUGETLBFS
 	bool "HugeTLB file system support"
-	depends X86 || IA64 || PPC64 || SPARC64 || SUPERH || X86_64 || BROKEN
+	depends X86 || IA64 || PPC64 || SPARC64 || SUPERH || BROKEN
 
 config HUGETLB_PAGE
 	def_bool HUGETLBFS
diff --git a/fs/Kconfig.binfmt b/fs/Kconfig.binfmt
index 434c19d076ac..175b2e8177c1 100644
--- a/fs/Kconfig.binfmt
+++ b/fs/Kconfig.binfmt
@@ -57,7 +57,7 @@ config BINFMT_SHARED_FLAT
 
 config BINFMT_AOUT
 	tristate "Kernel support for a.out and ECOFF binaries"
-	depends on (X86 && !X86_64) || ALPHA || ARM || M68K || SPARC32
+	depends on X86_32 || ALPHA || ARM || M68K || SPARC32
 	---help---
 	  A.out (Assembler.OUTput) is a set of formats for libraries and
 	  executables used in the earliest versions of UNIX.  Linux used
diff --git a/fs/attr.c b/fs/attr.c
index b1796fb9e524..67bcd9b14ea5 100644
--- a/fs/attr.c
+++ b/fs/attr.c
@@ -117,9 +117,6 @@ int notify_change(struct dentry * dentry, struct iattr * attr)
 	struct timespec now;
 	unsigned int ia_valid = attr->ia_valid;
 
-	if (!inode)
-		BUG();
-
 	mode = inode->i_mode;
 	now = current_fs_time(inode->i_sb);
 
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 918ccc267e41..6fa6adc40972 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -1502,9 +1502,7 @@ static int elf_core_dump(long signr, struct pt_regs * regs, struct file * file)
 	fill_psinfo(psinfo, current->group_leader, current->mm);
 	fill_note(notes +1, "CORE", NT_PRPSINFO, sizeof(*psinfo), psinfo);
 	
-	fill_note(notes +2, "CORE", NT_TASKSTRUCT, sizeof(*current), current);
-  
-	numnote = 3;
+	numnote = 2;
 
 	auxv = (elf_addr_t *) current->mm->saved_auxv;
 
diff --git a/fs/buffer.c b/fs/buffer.c
index 2066e4cb700c..35fa34977e81 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -1478,8 +1478,10 @@ EXPORT_SYMBOL(__getblk);
 void __breadahead(struct block_device *bdev, sector_t block, int size)
 {
 	struct buffer_head *bh = __getblk(bdev, block, size);
-	ll_rw_block(READA, 1, &bh);
-	brelse(bh);
+	if (likely(bh)) {
+		ll_rw_block(READA, 1, &bh);
+		brelse(bh);
+	}
 }
 EXPORT_SYMBOL(__breadahead);
 
@@ -1497,7 +1499,7 @@ __bread(struct block_device *bdev, sector_t block, int size)
 {
 	struct buffer_head *bh = __getblk(bdev, block, size);
 
-	if (!buffer_uptodate(bh))
+	if (likely(bh) && !buffer_uptodate(bh))
 		bh = __bread_slow(bh);
 	return bh;
 }
@@ -1637,6 +1639,15 @@ out:
 }
 EXPORT_SYMBOL(block_invalidatepage);
 
+int do_invalidatepage(struct page *page, unsigned long offset)
+{
+	int (*invalidatepage)(struct page *, unsigned long);
+	invalidatepage = page->mapping->a_ops->invalidatepage;
+	if (invalidatepage == NULL)
+		invalidatepage = block_invalidatepage;
+	return (*invalidatepage)(page, offset);
+}
+
 /*
  * We attach and possibly dirty the buffers atomically wrt
  * __set_page_dirty_buffers() via private_lock.  try_to_free_buffers
@@ -2696,7 +2707,7 @@ int block_write_full_page(struct page *page, get_block_t *get_block,
 		 * they may have been added in ext3_writepage().  Make them
 		 * freeable here, so the page does not leak.
 		 */
-		block_invalidatepage(page, 0);
+		do_invalidatepage(page, 0);
 		unlock_page(page);
 		return 0; /* don't care */
 	}
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index a327e03753ac..43dbcb0b21eb 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -3046,6 +3046,10 @@ HANDLE_IOCTL(RAW_GETBIND, raw_ioctl)
 /* Serial */
 HANDLE_IOCTL(TIOCGSERIAL, serial_struct_ioctl)
 HANDLE_IOCTL(TIOCSSERIAL, serial_struct_ioctl)
+#ifdef TIOCGLTC
+COMPATIBLE_IOCTL(TIOCGLTC)
+COMPATIBLE_IOCTL(TIOCSLTC)
+#endif
 /* Usbdevfs */
 HANDLE_IOCTL(USBDEVFS_CONTROL32, do_usbdevfs_control)
 HANDLE_IOCTL(USBDEVFS_BULK32, do_usbdevfs_bulk)
diff --git a/fs/dquot.c b/fs/dquot.c
index 05f3327d64a3..ea7644227a65 100644
--- a/fs/dquot.c
+++ b/fs/dquot.c
@@ -662,7 +662,7 @@ static void add_dquot_ref(struct super_block *sb, int type)
 restart:
 	file_list_lock();
 	list_for_each(p, &sb->s_files) {
-		struct file *filp = list_entry(p, struct file, f_list);
+		struct file *filp = list_entry(p, struct file, f_u.fu_list);
 		struct inode *inode = filp->f_dentry->d_inode;
 		if (filp->f_mode & FMODE_WRITE && dqinit_needed(inode, type)) {
 			struct dentry *dentry = dget(filp->f_dentry);
diff --git a/fs/exec.c b/fs/exec.c
index ba73797eb4cb..10d493fea7ce 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -630,10 +630,9 @@ static inline int de_thread(struct task_struct *tsk)
 	/*
 	 * Account for the thread group leader hanging around:
 	 */
-	count = 2;
-	if (thread_group_leader(current))
-		count = 1;
-	else {
+	count = 1;
+	if (!thread_group_leader(current)) {
+		count = 2;
 		/*
 		 * The SIGALRM timer survives the exec, but needs to point
 		 * at us as the new group leader now.  We have a race with
@@ -642,8 +641,10 @@ static inline int de_thread(struct task_struct *tsk)
 		 * before we can safely let the old group leader die.
 		 */
 		sig->real_timer.data = (unsigned long)current;
+		spin_unlock_irq(lock);
 		if (del_timer_sync(&sig->real_timer))
 			add_timer(&sig->real_timer);
+		spin_lock_irq(lock);
 	}
 	while (atomic_read(&sig->count) > count) {
 		sig->group_exit_task = current;
@@ -655,7 +656,6 @@ static inline int de_thread(struct task_struct *tsk)
 	}
 	sig->group_exit_task = NULL;
 	sig->notify_count = 0;
-	sig->real_timer.data = (unsigned long)current;
 	spin_unlock_irq(lock);
 
 	/*
@@ -1417,19 +1417,16 @@ static void zap_threads (struct mm_struct *mm)
 static void coredump_wait(struct mm_struct *mm)
 {
 	DECLARE_COMPLETION(startup_done);
+	int core_waiters;
 
-	mm->core_waiters++; /* let other threads block */
 	mm->core_startup_done = &startup_done;
 
-	/* give other threads a chance to run: */
-	yield();
-
 	zap_threads(mm);
-	if (--mm->core_waiters) {
-		up_write(&mm->mmap_sem);
+	core_waiters = mm->core_waiters;
+	up_write(&mm->mmap_sem);
+
+	if (core_waiters)
 		wait_for_completion(&startup_done);
-	} else
-		up_write(&mm->mmap_sem);
 	BUG_ON(mm->core_waiters);
 }
 
@@ -1463,11 +1460,21 @@ int do_coredump(long signr, int exit_code, struct pt_regs * regs)
 		current->fsuid = 0;	/* Dump root private */
 	}
 	mm->dumpable = 0;
-	init_completion(&mm->core_done);
+
+	retval = -EAGAIN;
 	spin_lock_irq(&current->sighand->siglock);
-	current->signal->flags = SIGNAL_GROUP_EXIT;
-	current->signal->group_exit_code = exit_code;
+	if (!(current->signal->flags & SIGNAL_GROUP_EXIT)) {
+		current->signal->flags = SIGNAL_GROUP_EXIT;
+		current->signal->group_exit_code = exit_code;
+		retval = 0;
+	}
 	spin_unlock_irq(&current->sighand->siglock);
+	if (retval) {
+		up_write(&mm->mmap_sem);
+		goto fail;
+	}
+
+	init_completion(&mm->core_done);
 	coredump_wait(mm);
 
 	/*
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index fdba4d1d3c60..e7d3f0522d01 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -440,6 +440,10 @@ static int ext2_alloc_branch(struct inode *inode,
 		 * the pointer to new one, then send parent to disk.
 		 */
 		bh = sb_getblk(inode->i_sb, parent);
+		if (!bh) {
+			err = -EIO;
+			break;
+		}
 		lock_buffer(bh);
 		memset(bh->b_data, 0, blocksize);
 		branch[n].bh = bh;
diff --git a/fs/ext3/balloc.c b/fs/ext3/balloc.c
index 0213db4911a2..7992d21e0e09 100644
--- a/fs/ext3/balloc.c
+++ b/fs/ext3/balloc.c
@@ -20,6 +20,8 @@
 #include <linux/quotaops.h>
 #include <linux/buffer_head.h>
 
+#include "bitmap.h"
+
 /*
  * balloc.c contains the blocks allocation and deallocation routines
  */
@@ -1010,7 +1012,7 @@ retry:
  * allocation within the reservation window.
  *
  * This will avoid keeping on searching the reservation list again and
- * again when someboday is looking for a free block (without
+ * again when somebody is looking for a free block (without
  * reservation), and there are lots of free blocks, but they are all
  * being reserved.
  *
@@ -1416,12 +1418,12 @@ unsigned long ext3_count_free_blocks(struct super_block *sb)
 	unsigned long bitmap_count, x;
 	struct buffer_head *bitmap_bh = NULL;
 
-	lock_super(sb);
 	es = EXT3_SB(sb)->s_es;
 	desc_count = 0;
 	bitmap_count = 0;
 	gdp = NULL;
 
+	smp_rmb();
 	for (i = 0; i < ngroups; i++) {
 		gdp = ext3_get_group_desc(sb, i, NULL);
 		if (!gdp)
@@ -1440,7 +1442,6 @@ unsigned long ext3_count_free_blocks(struct super_block *sb)
 	brelse(bitmap_bh);
 	printk("ext3_count_free_blocks: stored = %u, computed = %lu, %lu\n",
 	       le32_to_cpu(es->s_free_blocks_count), desc_count, bitmap_count);
-	unlock_super(sb);
 	return bitmap_count;
 #else
 	desc_count = 0;
diff --git a/fs/ext3/bitmap.c b/fs/ext3/bitmap.c
index 6c419b9ab0e8..5b4ba3e246e6 100644
--- a/fs/ext3/bitmap.c
+++ b/fs/ext3/bitmap.c
@@ -8,7 +8,7 @@
  */
 
 #include <linux/buffer_head.h>
-
+#include "bitmap.h"
 
 static int nibblemap[] = {4, 3, 3, 2, 3, 2, 2, 1, 3, 2, 2, 1, 2, 1, 1, 0};
 
diff --git a/fs/ext3/bitmap.h b/fs/ext3/bitmap.h
new file mode 100644
index 000000000000..6ee503a6bb4e
--- /dev/null
+++ b/fs/ext3/bitmap.h
@@ -0,0 +1,8 @@
+/*  linux/fs/ext3/bitmap.c
+ *
+ * Copyright (C) 2005 Simtec Electronics
+ *	Ben Dooks <ben@simtec.co.uk>
+ *
+*/
+
+extern unsigned long ext3_count_free (struct buffer_head *, unsigned int );
diff --git a/fs/ext3/ialloc.c b/fs/ext3/ialloc.c
index 6549945f9ac1..df3f517c54ac 100644
--- a/fs/ext3/ialloc.c
+++ b/fs/ext3/ialloc.c
@@ -26,6 +26,7 @@
 
 #include <asm/byteorder.h>
 
+#include "bitmap.h"
 #include "xattr.h"
 #include "acl.h"
 
@@ -704,7 +705,6 @@ unsigned long ext3_count_free_inodes (struct super_block * sb)
 	unsigned long bitmap_count, x;
 	struct buffer_head *bitmap_bh = NULL;
 
-	lock_super (sb);
 	es = EXT3_SB(sb)->s_es;
 	desc_count = 0;
 	bitmap_count = 0;
@@ -727,7 +727,6 @@ unsigned long ext3_count_free_inodes (struct super_block * sb)
 	brelse(bitmap_bh);
 	printk("ext3_count_free_inodes: stored = %u, computed = %lu, %lu\n",
 		le32_to_cpu(es->s_free_inodes_count), desc_count, bitmap_count);
-	unlock_super(sb);
 	return desc_count;
 #else
 	desc_count = 0;
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index 8b38f2232796..5d9b00e28837 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -491,7 +491,7 @@ static unsigned long ext3_find_goal(struct inode *inode, long block,
  *	the same format as ext3_get_branch() would do. We are calling it after
  *	we had read the existing part of chain and partial points to the last
  *	triple of that (one with zero ->key). Upon the exit we have the same
- *	picture as after the successful ext3_get_block(), excpet that in one
+ *	picture as after the successful ext3_get_block(), except that in one
  *	place chain is disconnected - *branch->p is still zero (we did not
  *	set the last link), but branch->key contains the number that should
  *	be placed into *branch->p to fill that gap.
@@ -523,7 +523,6 @@ static int ext3_alloc_branch(handle_t *handle, struct inode *inode,
 			if (!nr)
 				break;
 			branch[n].key = cpu_to_le32(nr);
-			keys = n+1;
 
 			/*
 			 * Get buffer_head for parent block, zero it out
@@ -531,6 +530,9 @@ static int ext3_alloc_branch(handle_t *handle, struct inode *inode,
 			 * parent to disk.  
 			 */
 			bh = sb_getblk(inode->i_sb, parent);
+			if (!bh)
+				break;
+			keys = n+1;
 			branch[n].bh = bh;
 			lock_buffer(bh);
 			BUFFER_TRACE(bh, "call get_create_access");
@@ -864,6 +866,10 @@ struct buffer_head *ext3_getblk(handle_t *handle, struct inode * inode,
 	if (!*errp && buffer_mapped(&dummy)) {
 		struct buffer_head *bh;
 		bh = sb_getblk(inode->i_sb, dummy.b_blocknr);
+		if (!bh) {
+			*errp = -EIO;
+			goto err;
+		}
 		if (buffer_new(&dummy)) {
 			J_ASSERT(create != 0);
 			J_ASSERT(handle != 0);
@@ -896,6 +902,7 @@ struct buffer_head *ext3_getblk(handle_t *handle, struct inode * inode,
 		}
 		return bh;
 	}
+err:
 	return NULL;
 }
 
diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c
index 50378d8ff84b..b3c690a3b54a 100644
--- a/fs/ext3/namei.c
+++ b/fs/ext3/namei.c
@@ -36,6 +36,8 @@
 #include <linux/quotaops.h>
 #include <linux/buffer_head.h>
 #include <linux/smp_lock.h>
+
+#include "namei.h"
 #include "xattr.h"
 #include "acl.h"
 
diff --git a/fs/ext3/namei.h b/fs/ext3/namei.h
new file mode 100644
index 000000000000..f2ce2b0065c9
--- /dev/null
+++ b/fs/ext3/namei.h
@@ -0,0 +1,8 @@
+/*  linux/fs/ext3/namei.h
+ *
+ * Copyright (C) 2005 Simtec Electronics
+ *	Ben Dooks <ben@simtec.co.uk>
+ *
+*/
+
+extern struct dentry *ext3_get_parent(struct dentry *child);
diff --git a/fs/ext3/resize.c b/fs/ext3/resize.c
index 57f79106267d..1be78b4b4de9 100644
--- a/fs/ext3/resize.c
+++ b/fs/ext3/resize.c
@@ -118,6 +118,8 @@ static struct buffer_head *bclean(handle_t *handle, struct super_block *sb,
 	int err;
 
 	bh = sb_getblk(sb, blk);
+	if (!bh)
+		return ERR_PTR(-EIO);
 	if ((err = ext3_journal_get_write_access(handle, bh))) {
 		brelse(bh);
 		bh = ERR_PTR(err);
@@ -202,6 +204,10 @@ static int setup_new_group_blocks(struct super_block *sb,
 		ext3_debug("update backup group %#04lx (+%d)\n", block, bit);
 
 		gdb = sb_getblk(sb, block);
+		if (!gdb) {
+			err = -EIO;
+			goto exit_bh;
+		}
 		if ((err = ext3_journal_get_write_access(handle, gdb))) {
 			brelse(gdb);
 			goto exit_bh;
@@ -643,6 +649,10 @@ static void update_backups(struct super_block *sb,
 			break;
 
 		bh = sb_getblk(sb, group * bpg + blk_off);
+		if (!bh) {
+			err = -EIO;
+			break;
+		}
 		ext3_debug("update metadata backup %#04lx\n",
 			  (unsigned long)bh->b_blocknr);
 		if ((err = ext3_journal_get_write_access(handle, bh)))
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 097383c11154..f594989ccb7a 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -36,9 +36,12 @@
 #include <linux/namei.h>
 #include <linux/quotaops.h>
 #include <linux/seq_file.h>
+
 #include <asm/uaccess.h>
+
 #include "xattr.h"
 #include "acl.h"
+#include "namei.h"
 
 static int ext3_load_journal(struct super_block *, struct ext3_super_block *);
 static int ext3_create_journal(struct super_block *, struct ext3_super_block *,
@@ -615,7 +618,6 @@ static struct super_operations ext3_sops = {
 #endif
 };
 
-struct dentry *ext3_get_parent(struct dentry *child);
 static struct export_operations ext3_export_ops = {
 	.get_parent = ext3_get_parent,
 };
diff --git a/fs/ext3/xattr.c b/fs/ext3/xattr.c
index 269c7b92db9a..430de9f63be3 100644
--- a/fs/ext3/xattr.c
+++ b/fs/ext3/xattr.c
@@ -210,7 +210,7 @@ ext3_xattr_find_entry(struct ext3_xattr_entry **pentry, int name_index,
 	return cmp ? -ENODATA : 0;
 }
 
-int
+static int
 ext3_xattr_block_get(struct inode *inode, int name_index, const char *name,
 		     void *buffer, size_t buffer_size)
 {
@@ -354,7 +354,7 @@ ext3_xattr_list_entries(struct inode *inode, struct ext3_xattr_entry *entry,
 	return buffer_size - rest;
 }
 
-int
+static int
 ext3_xattr_block_list(struct inode *inode, char *buffer, size_t buffer_size)
 {
 	struct buffer_head *bh = NULL;
@@ -626,7 +626,7 @@ struct ext3_xattr_block_find {
 	struct buffer_head *bh;
 };
 
-int
+static int
 ext3_xattr_block_find(struct inode *inode, struct ext3_xattr_info *i,
 		      struct ext3_xattr_block_find *bs)
 {
@@ -859,7 +859,7 @@ struct ext3_xattr_ibody_find {
 	struct ext3_iloc iloc;
 };
 
-int
+static int
 ext3_xattr_ibody_find(struct inode *inode, struct ext3_xattr_info *i,
 		      struct ext3_xattr_ibody_find *is)
 {
diff --git a/fs/fat/dir.c b/fs/fat/dir.c
index 895049b2ac9c..ba824964b9bb 100644
--- a/fs/fat/dir.c
+++ b/fs/fat/dir.c
@@ -222,6 +222,80 @@ fat_shortname2uni(struct nls_table *nls, unsigned char *buf, int buf_size,
 	return len;
 }
 
+enum { PARSE_INVALID = 1, PARSE_NOT_LONGNAME, PARSE_EOF, };
+
+/**
+ * fat_parse_long - Parse extended directory entry.
+ *
+ * This function returns zero on success, negative value on error, or one of
+ * the following:
+ *
+ * %PARSE_INVALID - Directory entry is invalid.
+ * %PARSE_NOT_LONGNAME - Directory entry does not contain longname.
+ * %PARSE_EOF - Directory has no more entries.
+ */
+static int fat_parse_long(struct inode *dir, loff_t *pos,
+			  struct buffer_head **bh, struct msdos_dir_entry **de,
+			  wchar_t **unicode, unsigned char *nr_slots)
+{
+	struct msdos_dir_slot *ds;
+	unsigned char id, slot, slots, alias_checksum;
+
+	if (!*unicode) {
+		*unicode = (wchar_t *)__get_free_page(GFP_KERNEL);
+		if (!*unicode) {
+			brelse(*bh);
+			return -ENOMEM;
+		}
+	}
+parse_long:
+	slots = 0;
+	ds = (struct msdos_dir_slot *)*de;
+	id = ds->id;
+	if (!(id & 0x40))
+		return PARSE_INVALID;
+	slots = id & ~0x40;
+	if (slots > 20 || !slots)	/* ceil(256 * 2 / 26) */
+		return PARSE_INVALID;
+	*nr_slots = slots;
+	alias_checksum = ds->alias_checksum;
+
+	slot = slots;
+	while (1) {
+		int offset;
+
+		slot--;
+		offset = slot * 13;
+		fat16_towchar(*unicode + offset, ds->name0_4, 5);
+		fat16_towchar(*unicode + offset + 5, ds->name5_10, 6);
+		fat16_towchar(*unicode + offset + 11, ds->name11_12, 2);
+
+		if (ds->id & 0x40)
+			(*unicode)[offset + 13] = 0;
+		if (fat_get_entry(dir, pos, bh, de) < 0)
+			return PARSE_EOF;
+		if (slot == 0)
+			break;
+		ds = (struct msdos_dir_slot *)*de;
+		if (ds->attr != ATTR_EXT)
+			return PARSE_NOT_LONGNAME;
+		if ((ds->id & ~0x40) != slot)
+			goto parse_long;
+		if (ds->alias_checksum != alias_checksum)
+			goto parse_long;
+	}
+	if ((*de)->name[0] == DELETED_FLAG)
+		return PARSE_INVALID;
+	if ((*de)->attr == ATTR_EXT)
+		goto parse_long;
+	if (IS_FREE((*de)->name) || ((*de)->attr & ATTR_VOLUME))
+		return PARSE_INVALID;
+	if (fat_checksum((*de)->name) != alias_checksum)
+		*nr_slots = 0;
+
+	return 0;
+}
+
 /*
  * Return values: negative -> error, 0 -> not found, positive -> found,
  * value is the total amount of slots, including the shortname entry.
@@ -259,68 +333,16 @@ parse_record:
 		if (de->attr != ATTR_EXT && IS_FREE(de->name))
 			continue;
 		if (de->attr == ATTR_EXT) {
-			struct msdos_dir_slot *ds;
-			unsigned char id;
-			unsigned char slot;
-			unsigned char slots;
-			unsigned char sum;
-			unsigned char alias_checksum;
-
-			if (!unicode) {
-				unicode = (wchar_t *)
-					__get_free_page(GFP_KERNEL);
-				if (!unicode) {
-					brelse(bh);
-					return -ENOMEM;
-				}
-			}
-parse_long:
-			slots = 0;
-			ds = (struct msdos_dir_slot *) de;
-			id = ds->id;
-			if (!(id & 0x40))
-				continue;
-			slots = id & ~0x40;
-			if (slots > 20 || !slots)	/* ceil(256 * 2 / 26) */
-				continue;
-			nr_slots = slots;
-			alias_checksum = ds->alias_checksum;
-
-			slot = slots;
-			while (1) {
-				int offset;
-
-				slot--;
-				offset = slot * 13;
-				fat16_towchar(unicode + offset, ds->name0_4, 5);
-				fat16_towchar(unicode + offset + 5, ds->name5_10, 6);
-				fat16_towchar(unicode + offset + 11, ds->name11_12, 2);
-
-				if (ds->id & 0x40) {
-					unicode[offset + 13] = 0;
-				}
-				if (fat_get_entry(inode, &cpos, &bh, &de) < 0)
-					goto EODir;
-				if (slot == 0)
-					break;
-				ds = (struct msdos_dir_slot *) de;
-				if (ds->attr !=  ATTR_EXT)
-					goto parse_record;
-				if ((ds->id & ~0x40) != slot)
-					goto parse_long;
-				if (ds->alias_checksum != alias_checksum)
-					goto parse_long;
-			}
-			if (de->name[0] == DELETED_FLAG)
-				continue;
-			if (de->attr ==  ATTR_EXT)
-				goto parse_long;
-			if (IS_FREE(de->name) || (de->attr & ATTR_VOLUME))
+			int status = fat_parse_long(inode, &cpos, &bh, &de,
+						    &unicode, &nr_slots);
+			if (status < 0)
+				return status;
+			else if (status == PARSE_INVALID)
 				continue;
-			for (sum = 0, i = 0; i < 11; i++)
-				sum = (((sum&1)<<7)|((sum&0xfe)>>1)) + de->name[i];
-			if (sum != alias_checksum)
-				nr_slots = 0;
+			else if (status == PARSE_NOT_LONGNAME)
+				goto parse_record;
+			else if (status == PARSE_EOF)
+				goto EODir;
 		}
 
 		memcpy(work, de->name, sizeof(de->name));
@@ -408,8 +430,8 @@ struct fat_ioctl_filldir_callback {
 	int short_len;
 };
 
-static int fat_readdirx(struct inode *inode, struct file *filp, void *dirent,
-			filldir_t filldir, int short_only, int both)
+static int __fat_readdir(struct inode *inode, struct file *filp, void *dirent,
+			 filldir_t filldir, int short_only, int both)
 {
 	struct super_block *sb = inode->i_sb;
 	struct msdos_sb_info *sbi = MSDOS_SB(sb);
@@ -458,9 +480,10 @@ static int fat_readdirx(struct inode *inode, struct file *filp, void *dirent,
 
 	bh = NULL;
 GetNew:
-	long_slots = 0;
 	if (fat_get_entry(inode, &cpos, &bh, &de) == -1)
 		goto EODir;
+parse_record:
+	long_slots = 0;
 	/* Check for long filename entry */
 	if (isvfat) {
 		if (de->name[0] == DELETED_FLAG)
@@ -475,69 +498,18 @@ GetNew:
 	}
 
 	if (isvfat && de->attr == ATTR_EXT) {
-		struct msdos_dir_slot *ds;
-		unsigned char id;
-		unsigned char slot;
-		unsigned char slots;
-		unsigned char sum;
-		unsigned char alias_checksum;
-
-		if (!unicode) {
-			unicode = (wchar_t *)__get_free_page(GFP_KERNEL);
-			if (!unicode) {
-				filp->f_pos = cpos;
-				brelse(bh);
-				ret = -ENOMEM;
-				goto out;
-			}
-		}
-ParseLong:
-		slots = 0;
-		ds = (struct msdos_dir_slot *) de;
-		id = ds->id;
-		if (!(id & 0x40))
-			goto RecEnd;
-		slots = id & ~0x40;
-		if (slots > 20 || !slots)	/* ceil(256 * 2 / 26) */
+		int status = fat_parse_long(inode, &cpos, &bh, &de,
+					    &unicode, &long_slots);
+		if (status < 0) {
+			filp->f_pos = cpos;
+			ret = status;
+			goto out;
+		} else if (status == PARSE_INVALID)
 			goto RecEnd;
-		long_slots = slots;
-		alias_checksum = ds->alias_checksum;
-
-		slot = slots;
-		while (1) {
-			int offset;
-
-			slot--;
-			offset = slot * 13;
-			fat16_towchar(unicode + offset, ds->name0_4, 5);
-			fat16_towchar(unicode + offset + 5, ds->name5_10, 6);
-			fat16_towchar(unicode + offset + 11, ds->name11_12, 2);
-
-			if (ds->id & 0x40) {
-				unicode[offset + 13] = 0;
-			}
-			if (fat_get_entry(inode, &cpos, &bh, &de) == -1)
-				goto EODir;
-			if (slot == 0)
-				break;
-			ds = (struct msdos_dir_slot *) de;
-			if (ds->attr !=  ATTR_EXT)
-				goto RecEnd;	/* XXX */
-			if ((ds->id & ~0x40) != slot)
-				goto ParseLong;
-			if (ds->alias_checksum != alias_checksum)
-				goto ParseLong;
-		}
-		if (de->name[0] == DELETED_FLAG)
-			goto RecEnd;
-		if (de->attr ==  ATTR_EXT)
-			goto ParseLong;
-		if (IS_FREE(de->name) || (de->attr & ATTR_VOLUME))
-			goto RecEnd;
-		for (sum = 0, i = 0; i < 11; i++)
-			sum = (((sum&1)<<7)|((sum&0xfe)>>1)) + de->name[i];
-		if (sum != alias_checksum)
-			long_slots = 0;
+		else if (status == PARSE_NOT_LONGNAME)
+			goto parse_record;
+		else if (status == PARSE_EOF)
+			goto EODir;
 	}
 
 	if (sbi->options.dotsOK) {
@@ -671,7 +643,7 @@ out:
 static int fat_readdir(struct file *filp, void *dirent, filldir_t filldir)
 {
 	struct inode *inode = filp->f_dentry->d_inode;
-	return fat_readdirx(inode, filp, dirent, filldir, 0, 0);
+	return __fat_readdir(inode, filp, dirent, filldir, 0, 0);
 }
 
 static int fat_ioctl_filldir(void *__buf, const char *name, int name_len,
@@ -760,8 +732,8 @@ static int fat_dir_ioctl(struct inode * inode, struct file * filp,
 	down(&inode->i_sem);
 	ret = -ENOENT;
 	if (!IS_DEADDIR(inode)) {
-		ret = fat_readdirx(inode, filp, &buf, fat_ioctl_filldir,
-				   short_only, both);
+		ret = __fat_readdir(inode, filp, &buf, fat_ioctl_filldir,
+				    short_only, both);
 	}
 	up(&inode->i_sem);
 	if (ret >= 0)
diff --git a/fs/file_table.c b/fs/file_table.c
index 86ec8ae985b4..4dc205546547 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -56,13 +56,13 @@ void filp_dtor(void * objp, struct kmem_cache_s *cachep, unsigned long dflags)
 
 static inline void file_free_rcu(struct rcu_head *head)
 {
-	struct file *f =  container_of(head, struct file, f_rcuhead);
+	struct file *f =  container_of(head, struct file, f_u.fu_rcuhead);
 	kmem_cache_free(filp_cachep, f);
 }
 
 static inline void file_free(struct file *f)
 {
-	call_rcu(&f->f_rcuhead, file_free_rcu);
+	call_rcu(&f->f_u.fu_rcuhead, file_free_rcu);
 }
 
 /* Find an unused file structure and return a pointer to it.
@@ -95,7 +95,7 @@ struct file *get_empty_filp(void)
 	f->f_gid = current->fsgid;
 	rwlock_init(&f->f_owner.lock);
 	/* f->f_version: 0 */
-	INIT_LIST_HEAD(&f->f_list);
+	INIT_LIST_HEAD(&f->f_u.fu_list);
 	return f;
 
 over:
@@ -225,15 +225,15 @@ void file_move(struct file *file, struct list_head *list)
 	if (!list)
 		return;
 	file_list_lock();
-	list_move(&file->f_list, list);
+	list_move(&file->f_u.fu_list, list);
 	file_list_unlock();
 }
 
 void file_kill(struct file *file)
 {
-	if (!list_empty(&file->f_list)) {
+	if (!list_empty(&file->f_u.fu_list)) {
 		file_list_lock();
-		list_del_init(&file->f_list);
+		list_del_init(&file->f_u.fu_list);
 		file_list_unlock();
 	}
 }
@@ -245,7 +245,7 @@ int fs_may_remount_ro(struct super_block *sb)
 	/* Check that no files are currently opened for writing. */
 	file_list_lock();
 	list_for_each(p, &sb->s_files) {
-		struct file *file = list_entry(p, struct file, f_list);
+		struct file *file = list_entry(p, struct file, f_u.fu_list);
 		struct inode *inode = file->f_dentry->d_inode;
 
 		/* File with pending delete? */
diff --git a/fs/filesystems.c b/fs/filesystems.c
index 44082bfdfec9..9f1072836c8e 100644
--- a/fs/filesystems.c
+++ b/fs/filesystems.c
@@ -12,6 +12,7 @@
 #include <linux/kmod.h>
 #include <linux/init.h>
 #include <linux/module.h>
+#include <linux/sched.h>	/* for 'current' */
 #include <asm/uaccess.h>
 
 /*
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index e94ab398b717..ffab4783ac64 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -230,7 +230,6 @@ __sync_single_inode(struct inode *inode, struct writeback_control *wbc)
 			 * The inode is clean, unused
 			 */
 			list_move(&inode->i_list, &inode_unused);
-			inodes_stat.nr_unused++;
 		}
 	}
 	wake_up_inode(inode);
@@ -238,14 +237,20 @@ __sync_single_inode(struct inode *inode, struct writeback_control *wbc)
 }
 
 /*
- * Write out an inode's dirty pages.  Called under inode_lock.
+ * Write out an inode's dirty pages.  Called under inode_lock.  Either the
+ * caller has ref on the inode (either via __iget or via syscall against an fd)
+ * or the inode has I_WILL_FREE set (via generic_forget_inode)
  */
 static int
-__writeback_single_inode(struct inode *inode,
-			struct writeback_control *wbc)
+__writeback_single_inode(struct inode *inode, struct writeback_control *wbc)
 {
 	wait_queue_head_t *wqh;
 
+	if (!atomic_read(&inode->i_count))
+		WARN_ON(!(inode->i_state & I_WILL_FREE));
+	else
+		WARN_ON(inode->i_state & I_WILL_FREE);
+
 	if ((wbc->sync_mode != WB_SYNC_ALL) && (inode->i_state & I_LOCK)) {
 		list_move(&inode->i_list, &inode->i_sb->s_dirty);
 		return 0;
@@ -259,11 +264,9 @@ __writeback_single_inode(struct inode *inode,
 
 		wqh = bit_waitqueue(&inode->i_state, __I_LOCK);
 		do {
-			__iget(inode);
 			spin_unlock(&inode_lock);
 			__wait_on_bit(wqh, &wq, inode_wait,
 							TASK_UNINTERRUPTIBLE);
-			iput(inode);
 			spin_lock(&inode_lock);
 		} while (inode->i_state & I_LOCK);
 	}
@@ -541,14 +544,15 @@ void sync_inodes(int wait)
 }
 
 /**
- *	write_inode_now	-	write an inode to disk
- *	@inode: inode to write to disk
- *	@sync: whether the write should be synchronous or not
+ * write_inode_now	-	write an inode to disk
+ * @inode: inode to write to disk
+ * @sync: whether the write should be synchronous or not
+ *
+ * This function commits an inode to disk immediately if it is dirty. This is
+ * primarily needed by knfsd.
  *
- *	This function commits an inode to disk immediately if it is
- *	dirty. This is primarily needed by knfsd.
+ * The caller must either have a ref on the inode or must have set I_WILL_FREE.
  */
- 
 int write_inode_now(struct inode *inode, int sync)
 {
 	int ret;
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index d4c869c6d01b..a6f90a6c754a 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -151,9 +151,9 @@ void fuse_release_background(struct fuse_req *req)
 /*
  * This function is called when a request is finished.  Either a reply
  * has arrived or it was interrupted (and not yet sent) or some error
- * occured during communication with userspace, or the device file was
- * closed.  It decreases the referece count for the request.  In case
- * of a background request the referece to the stored objects are
+ * occurred during communication with userspace, or the device file was
+ * closed.  It decreases the reference count for the request.  In case
+ * of a background request the reference to the stored objects are
  * released.  The requester thread is woken up (if still waiting), and
  * finally the request is either freed or put on the unused_list
  *
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 29f1e9f6e85c..70dba721acab 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -741,13 +741,14 @@ static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry,
 	if (inode && S_ISDIR(inode->i_mode)) {
 		/* Don't allow creating an alias to a directory  */
 		struct dentry *alias = d_find_alias(inode);
-		if (alias && !(alias->d_flags & DCACHE_DISCONNECTED)) {
+		if (alias) {
 			dput(alias);
 			iput(inode);
 			return ERR_PTR(-EIO);
 		}
 	}
-	return d_splice_alias(inode, entry);
+	d_add(entry, inode);
+	return NULL;
 }
 
 static int fuse_setxattr(struct dentry *entry, const char *name,
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index 24d761518d86..5cb456f572c1 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -349,22 +349,22 @@ int fuse_fsync_common(struct file *file, struct dentry *de, int datasync,
 		      int isdir);
 
 /**
- * Initialise file operations on a regular file
+ * Initialize file operations on a regular file
  */
 void fuse_init_file_inode(struct inode *inode);
 
 /**
- * Initialise inode operations on regular files and special files
+ * Initialize inode operations on regular files and special files
  */
 void fuse_init_common(struct inode *inode);
 
 /**
- * Initialise inode and file operations on a directory
+ * Initialize inode and file operations on a directory
  */
 void fuse_init_dir(struct inode *inode);
 
 /**
- * Initialise inode operations on a symlink
+ * Initialize inode operations on a symlink
  */
 void fuse_init_symlink(struct inode *inode);
 
@@ -411,7 +411,7 @@ struct fuse_req *fuse_get_request(struct fuse_conn *fc);
 
 /**
  * Decrement reference count of a request.  If count goes to zero put
- * on unused list (preallocated) or free reqest (not preallocated).
+ * on unused list (preallocated) or free request (not preallocated).
  */
 void fuse_put_request(struct fuse_conn *fc, struct fuse_req *req);
 
@@ -431,7 +431,7 @@ void request_send_noreply(struct fuse_conn *fc, struct fuse_req *req);
 void request_send_background(struct fuse_conn *fc, struct fuse_req *req);
 
 /**
- * Release inodes and file assiciated with background request
+ * Release inodes and file associated with background request
  */
 void fuse_release_background(struct fuse_req *req);
 
diff --git a/fs/inode.c b/fs/inode.c
index 7d3316527767..d8d04bd72b59 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -1088,6 +1088,7 @@ static void generic_forget_inode(struct inode *inode)
 	if (inode->i_data.nrpages)
 		truncate_inode_pages(&inode->i_data, 0);
 	clear_inode(inode);
+	wake_up_inode(inode);
 	destroy_inode(inode);
 }
 
diff --git a/fs/jffs2/background.c b/fs/jffs2/background.c
index 0f224384f176..8210ac16a368 100644
--- a/fs/jffs2/background.c
+++ b/fs/jffs2/background.c
@@ -15,6 +15,7 @@
 #include <linux/jffs2.h>
 #include <linux/mtd/mtd.h>
 #include <linux/completion.h>
+#include <linux/sched.h>
 #include "nodelist.h"
 
 
diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c
index 996d922e503e..316133c626b7 100644
--- a/fs/jffs2/wbuf.c
+++ b/fs/jffs2/wbuf.c
@@ -18,6 +18,8 @@
 #include <linux/mtd/mtd.h>
 #include <linux/crc32.h>
 #include <linux/mtd/nand.h>
+#include <linux/jiffies.h>
+
 #include "nodelist.h"
 
 /* For testing write failures */
diff --git a/fs/msdos/namei.c b/fs/msdos/namei.c
index 154f511c7245..626a367bcd81 100644
--- a/fs/msdos/namei.c
+++ b/fs/msdos/namei.c
@@ -454,10 +454,10 @@ static int do_msdos_rename(struct inode *old_dir, unsigned char *old_name,
 {
 	struct buffer_head *dotdot_bh;
 	struct msdos_dir_entry *dotdot_de;
-	loff_t dotdot_i_pos;
 	struct inode *old_inode, *new_inode;
 	struct fat_slot_info old_sinfo, sinfo;
 	struct timespec ts;
+	loff_t dotdot_i_pos, new_i_pos;
 	int err, old_attrs, is_dir, update_dotdot, corrupt = 0;
 
 	old_sinfo.bh = sinfo.bh = dotdot_bh = NULL;
@@ -516,28 +516,24 @@ static int do_msdos_rename(struct inode *old_dir, unsigned char *old_name,
 	if (new_inode) {
 		if (err)
 			goto out;
-		if (MSDOS_I(new_inode)->i_pos != sinfo.i_pos) {
-			/* WTF??? Cry and fail. */
-			printk(KERN_WARNING "msdos_rename: fs corrupted\n");
-			goto out;
-		}
-
 		if (is_dir) {
 			err = fat_dir_empty(new_inode);
 			if (err)
 				goto out;
 		}
+		new_i_pos = MSDOS_I(new_inode)->i_pos;
 		fat_detach(new_inode);
 	} else {
 		err = msdos_add_entry(new_dir, new_name, is_dir, is_hid, 0,
 				      &ts, &sinfo);
 		if (err)
 			goto out;
+		new_i_pos = sinfo.i_pos;
 	}
 	new_dir->i_version++;
 
 	fat_detach(old_inode);
-	fat_attach(old_inode, sinfo.i_pos);
+	fat_attach(old_inode, new_i_pos);
 	if (is_hid)
 		MSDOS_I(old_inode)->i_attrs |= ATTR_HIDDEN;
 	else
@@ -604,7 +600,7 @@ error_inode:
 	fat_attach(old_inode, old_sinfo.i_pos);
 	MSDOS_I(old_inode)->i_attrs = old_attrs;
 	if (new_inode) {
-		fat_attach(new_inode, sinfo.i_pos);
+		fat_attach(new_inode, new_i_pos);
 		if (corrupt)
 			corrupt |= fat_sync_inode(new_inode);
 	} else {
diff --git a/fs/namei.c b/fs/namei.c
index aaaa81036234..c5769c4fcab1 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1311,9 +1311,6 @@ static inline int may_create(struct inode *dir, struct dentry *child,
 }
 
 /* 
- * Special case: O_CREAT|O_EXCL implies O_NOFOLLOW for security
- * reasons.
- *
  * O_DIRECTORY translates into forcing a directory lookup.
  */
 static inline int lookup_flags(unsigned int f)
@@ -1323,9 +1320,6 @@ static inline int lookup_flags(unsigned int f)
 	if (f & O_NOFOLLOW)
 		retval &= ~LOOKUP_FOLLOW;
 	
-	if ((f & (O_CREAT|O_EXCL)) == (O_CREAT|O_EXCL))
-		retval &= ~LOOKUP_FOLLOW;
-	
 	if (f & O_DIRECTORY)
 		retval |= LOOKUP_DIRECTORY;
 
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index f2781ca42761..fc0f12ba89cc 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -1274,14 +1274,12 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat
 	}
 
 	if ((fattr->valid & NFS_ATTR_FATTR) == 0) {
-		spin_unlock(&inode->i_lock);
 		return 0;
 	}
 
 	/* Has the inode gone and changed behind our back? */
 	if (nfsi->fileid != fattr->fileid
 			|| (inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT)) {
-		spin_unlock(&inode->i_lock);
 		return -EIO;
 	}
 
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 8a8c34461d48..b638fb500743 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -533,7 +533,7 @@ static void proc_kill_inodes(struct proc_dir_entry *de)
 	 */
 	file_list_lock();
 	list_for_each(p, &sb->s_files) {
-		struct file * filp = list_entry(p, struct file, f_list);
+		struct file * filp = list_entry(p, struct file, f_u.fu_list);
 		struct dentry * dentry = filp->f_dentry;
 		struct inode * inode;
 		struct file_operations *fops;
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index effa6c0c467a..e6a818a93f3d 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -156,10 +156,13 @@ struct inode *proc_get_inode(struct super_block *sb, unsigned int ino,
 
 	WARN_ON(de && de->deleted);
 
+	if (de != NULL && !try_module_get(de->owner))
+		goto out_mod;
+
 	inode = iget(sb, ino);
 	if (!inode)
-		goto out_fail;
-	
+		goto out_ino;
+
 	PROC_I(inode)->pde = de;
 	if (de) {
 		if (de->mode) {
@@ -171,20 +174,20 @@ struct inode *proc_get_inode(struct super_block *sb, unsigned int ino,
 			inode->i_size = de->size;
 		if (de->nlink)
 			inode->i_nlink = de->nlink;
-		if (!try_module_get(de->owner))
-			goto out_fail;
 		if (de->proc_iops)
 			inode->i_op = de->proc_iops;
 		if (de->proc_fops)
 			inode->i_fop = de->proc_fops;
 	}
 
-out:
 	return inode;
 
-out_fail:
+out_ino:
+	if (de != NULL)
+		module_put(de->owner);
+out_mod:
 	de_put(de);
-	goto out;
+	return NULL;
 }			
 
 int proc_fill_super(struct super_block *s, void *data, int silent)
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index a3453555a94e..5b6b0b6038a7 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -629,12 +629,4 @@ void __init proc_misc_init(void)
 	if (entry)
 		entry->proc_fops = &proc_sysrq_trigger_operations;
 #endif
-#ifdef CONFIG_PPC32
-	{
-		extern struct file_operations ppc_htab_operations;
-		entry = create_proc_entry("ppc_htab", S_IRUGO|S_IWUSR, NULL);
-		if (entry)
-			entry->proc_fops = &ppc_htab_operations;
-	}
-#endif
 }
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 44b02fc02ebe..42afb5bef111 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -1024,12 +1024,8 @@ static int reiserfs_parse_options(struct super_block *s, char *options,	/* strin
 				strcpy(REISERFS_SB(s)->s_qf_names[qtype], arg);
 				*mount_options |= 1 << REISERFS_QUOTA;
 			} else {
-				if (REISERFS_SB(s)->s_qf_names[qtype]) {
-					kfree(REISERFS_SB(s)->
-					      s_qf_names[qtype]);
-					REISERFS_SB(s)->s_qf_names[qtype] =
-					    NULL;
-				}
+				kfree(REISERFS_SB(s)->s_qf_names[qtype]);
+				REISERFS_SB(s)->s_qf_names[qtype] = NULL;
 			}
 		}
 		if (c == 'f') {
@@ -1158,11 +1154,10 @@ static int reiserfs_remount(struct super_block *s, int *mount_flags, char *arg)
 	if (!reiserfs_parse_options
 	    (s, arg, &mount_options, &blocks, NULL, &commit_max_age)) {
 #ifdef CONFIG_QUOTA
-		for (i = 0; i < MAXQUOTAS; i++)
-			if (REISERFS_SB(s)->s_qf_names[i]) {
-				kfree(REISERFS_SB(s)->s_qf_names[i]);
-				REISERFS_SB(s)->s_qf_names[i] = NULL;
-			}
+		for (i = 0; i < MAXQUOTAS; i++) {
+			kfree(REISERFS_SB(s)->s_qf_names[i]);
+			REISERFS_SB(s)->s_qf_names[i] = NULL;
+		}
 #endif
 		return -EINVAL;
 	}
@@ -1940,13 +1935,11 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
 		brelse(SB_BUFFER_WITH_SB(s));
 #ifdef CONFIG_QUOTA
 	for (j = 0; j < MAXQUOTAS; j++) {
-		if (sbi->s_qf_names[j])
-			kfree(sbi->s_qf_names[j]);
+		kfree(sbi->s_qf_names[j]);
+		sbi->s_qf_names[j] = NULL;
 	}
 #endif
-	if (sbi != NULL) {
-		kfree(sbi);
-	}
+	kfree(sbi);
 
 	s->s_fs_info = NULL;
 	return errval;
diff --git a/fs/reiserfs/xattr_acl.c b/fs/reiserfs/xattr_acl.c
index 6703efa3c430..a47ac9aac8b2 100644
--- a/fs/reiserfs/xattr_acl.c
+++ b/fs/reiserfs/xattr_acl.c
@@ -296,8 +296,7 @@ reiserfs_set_acl(struct inode *inode, int type, struct posix_acl *acl)
 		}
 	}
 
-	if (value)
-		kfree(value);
+	kfree(value);
 
 	if (!error) {
 		/* Release the old one */
diff --git a/fs/super.c b/fs/super.c
index 6e57ee252e14..f60155ec7780 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -513,7 +513,7 @@ static void mark_files_ro(struct super_block *sb)
 	struct file *f;
 
 	file_list_lock();
-	list_for_each_entry(f, &sb->s_files, f_list) {
+	list_for_each_entry(f, &sb->s_files, f_u.fu_list) {
 		if (S_ISREG(f->f_dentry->d_inode->i_mode) && file_count(f))
 			f->f_mode &= ~FMODE_WRITE;
 	}
diff --git a/fs/vfat/namei.c b/fs/vfat/namei.c
index 1c6f6b57ef1c..ef46939c0c1a 100644
--- a/fs/vfat/namei.c
+++ b/fs/vfat/namei.c
@@ -621,8 +621,7 @@ static int vfat_build_slots(struct inode *dir, const unsigned char *name,
 	}
 
 	/* build the entry of long file name */
-	for (cksum = i = 0; i < 11; i++)
-		cksum = (((cksum&1)<<7)|((cksum&0xfe)>>1)) + msdos_name[i];
+	cksum = fat_checksum(msdos_name);
 
 	*nr_slots = usize / 13;
 	for (ps = slots, i = *nr_slots; i > 0; i--, ps++) {
@@ -888,10 +887,10 @@ static int vfat_rename(struct inode *old_dir, struct dentry *old_dentry,
 {
 	struct buffer_head *dotdot_bh;
 	struct msdos_dir_entry *dotdot_de;
-	loff_t dotdot_i_pos;
 	struct inode *old_inode, *new_inode;
 	struct fat_slot_info old_sinfo, sinfo;
 	struct timespec ts;
+	loff_t dotdot_i_pos, new_i_pos;
 	int err, is_dir, update_dotdot, corrupt = 0;
 
 	old_sinfo.bh = sinfo.bh = dotdot_bh = NULL;
@@ -914,31 +913,24 @@ static int vfat_rename(struct inode *old_dir, struct dentry *old_dentry,
 
 	ts = CURRENT_TIME_SEC;
 	if (new_inode) {
-		err = vfat_find(new_dir, &new_dentry->d_name, &sinfo);
-		if (err)
-			goto out;
-		if (MSDOS_I(new_inode)->i_pos != sinfo.i_pos) {
-			/* WTF??? Cry and fail. */
-			printk(KERN_WARNING "vfat_rename: fs corrupted\n");
-			goto out;
-		}
-
 		if (is_dir) {
 			err = fat_dir_empty(new_inode);
 			if (err)
 				goto out;
 		}
+		new_i_pos = MSDOS_I(new_inode)->i_pos;
 		fat_detach(new_inode);
 	} else {
 		err = vfat_add_entry(new_dir, &new_dentry->d_name, is_dir, 0,
 				     &ts, &sinfo);
 		if (err)
 			goto out;
+		new_i_pos = sinfo.i_pos;
 	}
 	new_dir->i_version++;
 
 	fat_detach(old_inode);
-	fat_attach(old_inode, sinfo.i_pos);
+	fat_attach(old_inode, new_i_pos);
 	if (IS_DIRSYNC(new_dir)) {
 		err = fat_sync_inode(old_inode);
 		if (err)
@@ -1002,7 +994,7 @@ error_inode:
 	fat_detach(old_inode);
 	fat_attach(old_inode, old_sinfo.i_pos);
 	if (new_inode) {
-		fat_attach(new_inode, sinfo.i_pos);
+		fat_attach(new_inode, new_i_pos);
 		if (corrupt)
 			corrupt |= fat_sync_inode(new_inode);
 	} else {
diff --git a/fs/xattr.c b/fs/xattr.c
index 3f9c64bea151..f6e00c0e114f 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -143,7 +143,7 @@ getxattr(struct dentry *d, char __user *name, void __user *value, size_t size)
 	if (size) {
 		if (size > XATTR_SIZE_MAX)
 			size = XATTR_SIZE_MAX;
-		kvalue = kmalloc(size, GFP_KERNEL);
+		kvalue = kzalloc(size, GFP_KERNEL);
 		if (!kvalue)
 			return -ENOMEM;
 	}
@@ -154,11 +154,15 @@ getxattr(struct dentry *d, char __user *name, void __user *value, size_t size)
 	error = -EOPNOTSUPP;
 	if (d->d_inode->i_op && d->d_inode->i_op->getxattr)
 		error = d->d_inode->i_op->getxattr(d, kname, kvalue, size);
-	else if (!strncmp(kname, XATTR_SECURITY_PREFIX,
-			  sizeof XATTR_SECURITY_PREFIX - 1)) {
+
+	if (!strncmp(kname, XATTR_SECURITY_PREFIX,
+		     sizeof XATTR_SECURITY_PREFIX - 1)) {
 		const char *suffix = kname + sizeof XATTR_SECURITY_PREFIX - 1;
-		error = security_inode_getsecurity(d->d_inode, suffix, kvalue,
-						   size);
+		int rv = security_inode_getsecurity(d->d_inode, suffix, kvalue,
+						    size, error);
+		/* Security module active: overwrite error value */
+		if (rv != -EOPNOTSUPP)
+			error = rv;
 	}
 	if (error > 0) {
 		if (size && copy_to_user(value, kvalue, error))