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

Pull second set of VFS changes from Al Viro:
 "Assorted f_pos race fixes, making do_splice_direct() safe to call with
  i_mutex on parent, O_TMPFILE support, Jeff's locks.c series,
  ->d_hash/->d_compare calling conventions changes from Linus, misc
  stuff all over the place."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (63 commits)
  Document ->tmpfile()
  ext4: ->tmpfile() support
  vfs: export lseek_execute() to modules
  lseek_execute() doesn't need an inode passed to it
  block_dev: switch to fixed_size_llseek()
  cpqphp_sysfs: switch to fixed_size_llseek()
  tile-srom: switch to fixed_size_llseek()
  proc_powerpc: switch to fixed_size_llseek()
  ubi/cdev: switch to fixed_size_llseek()
  pci/proc: switch to fixed_size_llseek()
  isapnp: switch to fixed_size_llseek()
  lpfc: switch to fixed_size_llseek()
  locks: give the blocked_hash its own spinlock
  locks: add a new "lm_owner_key" lock operation
  locks: turn the blocked_list into a hashtable
  locks: convert fl_link to a hlist_node
  locks: avoid taking global lock if possible when waking up blocked waiters
  locks: protect most of the file_lock handling with i_lock
  locks: encapsulate the fl_link list handling
  locks: make "added" in __posix_lock_file a bool
  ...

2 files changed, 5 insertions, 51 deletions

diff --git a/drivers/char/ps3flash.c b/drivers/char/ps3flash.c
index 8cafa9c..0b311fa 100644
--- a/drivers/char/ps3flash.c
+++ b/drivers/char/ps3flash.c
@@ -98,32 +98,8 @@ static int ps3flash_fetch(struct ps3_storage_device *dev, u64 start_sector)
 static loff_t ps3flash_llseek(struct file *file, loff_t offset, int origin)
 {
 	struct ps3_storage_device *dev = ps3flash_dev;
-	loff_t res;
-
-	mutex_lock(&file->f_mapping->host->i_mutex);
-	switch (origin) {
-	case 0:
-		break;
-	case 1:
-		offset += file->f_pos;
-		break;
-	case 2:
-		offset += dev->regions[dev->region_idx].size*dev->blk_size;
-		break;
-	default:
-		offset = -1;
-	}
-	if (offset < 0) {
-		res = -EINVAL;
-		goto out;
-	}
-
-	file->f_pos = offset;
-	res = file->f_pos;
-
-out:
-	mutex_unlock(&file->f_mapping->host->i_mutex);
-	return res;
+	return generic_file_llseek_size(file, offset, origin, MAX_LFS_FILESIZE,
+			dev->regions[dev->region_idx].size*dev->blk_size);
 }
 
 static ssize_t ps3flash_read(char __user *userbuf, void *kernelbuf,
diff --git a/drivers/char/tile-srom.c b/drivers/char/tile-srom.c
index 2e2036e..7faeb1c 100644
--- a/drivers/char/tile-srom.c
+++ b/drivers/char/tile-srom.c
@@ -273,32 +273,10 @@ static ssize_t srom_write(struct file *filp, const char __user *buf,
 }
 
 /* Provide our own implementation so we can use srom->total_size. */
-loff_t srom_llseek(struct file *filp, loff_t offset, int origin)
+loff_t srom_llseek(struct file *file, loff_t offset, int origin)
 {
-	struct srom_dev *srom = filp->private_data;
-
-	if (mutex_lock_interruptible(&srom->lock))
-		return -ERESTARTSYS;
-
-	switch (origin) {
-	case SEEK_END:
-		offset += srom->total_size;
-		break;
-	case SEEK_CUR:
-		offset += filp->f_pos;
-		break;
-	}
-
-	if (offset < 0 || offset > srom->total_size) {
-		offset = -EINVAL;
-	} else {
-		filp->f_pos = offset;
-		filp->f_version = 0;
-	}
-
-	mutex_unlock(&srom->lock);
-
-	return offset;
+	struct srom_dev *srom = file->private_data;
+	return fixed_size_llseek(file, offset, origin, srom->total_size);
 }
 
 static ssize_t total_show(struct device *dev,