Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: (58 commits)
  Btrfs: use the device_list_mutex during write_dev_supers
  Btrfs: setup free ino caching in a more asynchronous way
  btrfs scrub: don't coalesce pages that are logically discontiguous
  Btrfs: return -ENOMEM in clear_extent_bit
  Btrfs: add mount -o auto_defrag
  Btrfs: using rcu lock in the reader side of devices list
  Btrfs: drop unnecessary device lock
  Btrfs: fix the race between remove dev and alloc chunk
  Btrfs: fix the race between reading and updating devices
  Btrfs: fix bh leak on __btrfs_open_devices path
  Btrfs: fix unsafe usage of merge_state
  Btrfs: allocate extent state and check the result properly
  fs/btrfs: Add missing btrfs_free_path
  Btrfs: check return value of btrfs_inc_extent_ref()
  Btrfs: return error to caller if read_one_inode() fails
  Btrfs: BUG_ON is deleted from the caller of btrfs_truncate_item & btrfs_extend_item
  Btrfs: return error code to caller when btrfs_del_item fails
  Btrfs: return error code to caller when btrfs_previous_item fails
  btrfs: fix typo 'testeing' -> 'testing'
  btrfs: typo: 'btrfS' -> 'btrfs'
  ...

48 files changed, 6481 insertions, 4557 deletions

diff --git a/fs/btrfs/Makefile b/fs/btrfs/Makefile
index 31610ea73aec..9b72dcf1cd25 100644
--- a/fs/btrfs/Makefile
+++ b/fs/btrfs/Makefile
@@ -7,4 +7,4 @@ btrfs-y += super.o ctree.o extent-tree.o print-tree.o root-tree.o dir-item.o \
            extent_map.o sysfs.o struct-funcs.o xattr.o ordered-data.o \
            extent_io.o volumes.o async-thread.o ioctl.o locking.o orphan.o \
            export.o tree-log.o acl.o free-space-cache.o zlib.o lzo.o \
-           compression.o delayed-ref.o relocation.o
+           compression.o delayed-ref.o relocation.o delayed-inode.o scrub.o
diff --git a/fs/btrfs/acl.c b/fs/btrfs/acl.c
index 44ea5b92e1ba..f66fc9959733 100644
--- a/fs/btrfs/acl.c
+++ b/fs/btrfs/acl.c
@@ -288,7 +288,7 @@ int btrfs_acl_chmod(struct inode *inode)
                 return 0;
 
         acl = btrfs_get_acl(inode, ACL_TYPE_ACCESS);
-        if (IS_ERR(acl) || !acl)
+        if (IS_ERR_OR_NULL(acl))
                 return PTR_ERR(acl);
 
         clone = posix_acl_clone(acl, GFP_KERNEL);
diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h
index 57c3bb2884ce..93b1aa932014 100644
--- a/fs/btrfs/btrfs_inode.h
+++ b/fs/btrfs/btrfs_inode.h
@@ -22,6 +22,7 @@
 #include "extent_map.h"
 #include "extent_io.h"
 #include "ordered-data.h"
+#include "delayed-inode.h"
 
 /* in memory btrfs inode */
 struct btrfs_inode {
@@ -152,20 +153,34 @@ struct btrfs_inode {
         unsigned ordered_data_close:1;
         unsigned orphan_meta_reserved:1;
         unsigned dummy_inode:1;
+        unsigned in_defrag:1;
 
         /*
          * always compress this one file
          */
         unsigned force_compress:4;
 
+        struct btrfs_delayed_node *delayed_node;
+
         struct inode vfs_inode;
 };
 
+extern unsigned char btrfs_filetype_table[];
+
 static inline struct btrfs_inode *BTRFS_I(struct inode *inode)
 {
         return container_of(inode, struct btrfs_inode, vfs_inode);
 }
 
+static inline u64 btrfs_ino(struct inode *inode)
+{
+        u64 ino = BTRFS_I(inode)->location.objectid;
+
+        if (ino <= BTRFS_FIRST_FREE_OBJECTID)
+                ino = inode->i_ino;
+        return ino;
+}
+
 static inline void btrfs_i_size_write(struct inode *inode, u64 size)
 {
         i_size_write(inode, size);
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 41d1d7c70e29..bfe42b03eaf9 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -125,9 +125,10 @@ static int check_compressed_csum(struct inode *inode,
                 kunmap_atomic(kaddr, KM_USER0);
 
                 if (csum != *cb_sum) {
-                        printk(KERN_INFO "btrfs csum failed ino %lu "
+                        printk(KERN_INFO "btrfs csum failed ino %llu "
                                "extent %llu csum %u "
-                               "wanted %u mirror %d\n", inode->i_ino,
+                               "wanted %u mirror %d\n",
+                               (unsigned long long)btrfs_ino(inode),
                                (unsigned long long)disk_start,
                                csum, *cb_sum, cb->mirror_num);
                         ret = -EIO;
@@ -332,7 +333,7 @@ int btrfs_submit_compressed_write(struct inode *inode, u64 start,
         struct compressed_bio *cb;
         unsigned long bytes_left;
         struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree;
-        int page_index = 0;
+        int pg_index = 0;
         struct page *page;
         u64 first_byte = disk_start;
         struct block_device *bdev;
@@ -366,8 +367,8 @@ int btrfs_submit_compressed_write(struct inode *inode, u64 start,
 
         /* create and submit bios for the compressed pages */
         bytes_left = compressed_len;
-        for (page_index = 0; page_index < cb->nr_pages; page_index++) {
-                page = compressed_pages[page_index];
+        for (pg_index = 0; pg_index < cb->nr_pages; pg_index++) {
+                page = compressed_pages[pg_index];
                 page->mapping = inode->i_mapping;