Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 updates from Ted Ts'o:

 - further restructure ext4 documentation

 - fix up ext4's delayed allocation for bigalloc file systems

 - fix up some syzbot-detected races in EXT4_IOC_MOVE_EXT,
   EXT4_IOC_SWAP_BOOT, and ext4_remount

 - ... and a few other miscellaneous bugs and optimizations.

* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (21 commits)
  ext4: fix use-after-free race in ext4_remount()'s error path
  ext4: cache NULL when both default_acl and acl are NULL
  docs: promote the ext4 data structures book to top level
  docs: move ext4 administrative docs to admin-guide/
  jbd2: fix use after free in jbd2_log_do_checkpoint()
  ext4: propagate error from dquot_initialize() in EXT4_IOC_FSSETXATTR
  ext4: fix setattr project check in fssetxattr ioctl
  docs: make ext4 readme tables readable
  docs: fix ext4 documentation table formatting problems
  docs: generate a separate ext4 pdf file from the documentation
  ext4: convert fault handler to use vm_fault_t type
  ext4: initialize retries variable in ext4_da_write_inline_data_begin()
  ext4: fix EXT4_IOC_SWAP_BOOT
  ext4: fix build error when DX_DEBUG is defined
  ext4: fix argument checking in EXT4_IOC_MOVE_EXT
  ext4: fix reserved cluster accounting at page invalidation time
  ext4: adjust reserved cluster count when removing extents
  ext4: reduce reserved cluster count by number of allocated clusters
  ext4: fix reserved cluster accounting at delayed write time
  ext4: add new pending reservation mechanism
  ...

Documentation/admin-guide/index.rst

@@ -71,6 +71,7 @@ configure specific aspects of kernel behavior to your liking.
    java
    ras
    bcache
+   ext4
    pm/index
    thunderbolt
    LSM/index

Documentation/conf.py

@@ -383,6 +383,10 @@ latex_documents = [
      'The kernel development community', 'manual'),
     ('filesystems/index', 'filesystems.tex', 'Linux Filesystems API',
      'The kernel development community', 'manual'),
+    ('admin-guide/ext4', 'ext4-admin-guide.tex', 'ext4 Administration Guide',
+     'ext4 Community', 'manual'),
+    ('filesystems/ext4/index', 'ext4-data-structures.tex',
+     'ext4 Data Structures and Algorithms', 'ext4 Community', 'manual'),
     ('gpu/index', 'gpu.tex', 'Linux GPU Driver Developer\'s Guide',
      'The kernel development community', 'manual'),
     ('input/index', 'linux-input.tex', 'The Linux input driver subsystem',

Documentation/filesystems/ext4/ondisk/attributes.rst → Documentation/filesystems/ext4/attributes.rst

@@ -30,7 +30,7 @@ Extended attributes, when stored after the inode, have a header
 ``ext4_xattr_ibody_header`` that is 4 bytes long:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -47,7 +47,7 @@ The beginning of an extended attribute block is in
 ``struct ext4_xattr_header``, which is 32 bytes long:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -92,7 +92,7 @@ entries must be stored in sorted order. The sort order is
 Attributes stored inside an inode do not need be stored in sorted order.
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -157,7 +157,7 @@ attribute name index field is set, and matching string is removed from
 the key name. Here is a map of name index values to key prefixes:
 
 .. list-table::
-   :widths: 1 79
+   :widths: 16 64
    :header-rows: 1
 
    * - Name Index

Documentation/filesystems/ext4/ondisk/checksums.rst → Documentation/filesystems/ext4/checksums.rst

@@ -28,7 +28,7 @@ of checksum. The checksum function is whatever the superblock describes
 (crc32c as of October 2013) unless noted otherwise.
 
 .. list-table::
-   :widths: 1 1 4
+   :widths: 20 8 50
    :header-rows: 1
 
    * - Metadata

Documentation/filesystems/ext4/ondisk/directory.rst → Documentation/filesystems/ext4/directory.rst

@@ -34,7 +34,7 @@ is at most 263 bytes long, though on disk you'll need to reference
 ``dirent.rec_len`` to know for sure.
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -66,7 +66,7 @@ tree traversal. This format is ``ext4_dir_entry_2``, which is at most
 ``dirent.rec_len`` to know for sure.
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -99,7 +99,7 @@ tree traversal. This format is ``ext4_dir_entry_2``, which is at most
 The directory file type is one of the following values:
 
 .. list-table::
-   :widths: 1 79
+   :widths: 16 64
    :header-rows: 1
 
    * - Value
@@ -130,7 +130,7 @@ in the place where the name normally goes. The structure is
 ``struct ext4_dir_entry_tail``:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -212,7 +212,7 @@ The root of the htree is in ``struct dx_root``, which is the full length
 of a data block:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -305,7 +305,7 @@ of a data block:
 The directory hash is one of the following values:
 
 .. list-table::
-   :widths: 1 79
+   :widths: 16 64
    :header-rows: 1
 
    * - Value
@@ -327,7 +327,7 @@ Interior nodes of an htree are recorded as ``struct dx_node``, which is
 also the full length of a data block:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -375,7 +375,7 @@ The hash maps that exist in both ``struct dx_root`` and
 long:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -405,7 +405,7 @@ directory index (which will ensure that there's space for the checksum.
 The dx\_tail structure is 8 bytes long and looks like this:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset

Documentation/filesystems/ext4/ondisk/group_descr.rst → Documentation/filesystems/ext4/group_descr.rst

@@ -43,7 +43,7 @@ entire bitmap.
 The block group descriptor is laid out in ``struct ext4_group_desc``.
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -157,7 +157,7 @@ The block group descriptor is laid out in ``struct ext4_group_desc``.
 Block group flags can be any combination of the following:
 
 .. list-table::
-   :widths: 1 79
+   :widths: 16 64
    :header-rows: 1
 
    * - Value

Documentation/filesystems/ext4/ondisk/ifork.rst → Documentation/filesystems/ext4/ifork.rst

@@ -68,7 +68,7 @@ The extent tree header is recorded in ``struct ext4_extent_header``,
 which is 12 bytes long:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -104,7 +104,7 @@ Internal nodes of the extent tree, also known as index nodes, are
 recorded as ``struct ext4_extent_idx``, and are 12 bytes long:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -134,7 +134,7 @@ Leaf nodes of the extent tree are recorded as ``struct ext4_extent``,
 and are also 12 bytes long:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -174,7 +174,7 @@ including) the checksum itself.
 ``struct ext4_extent_tail`` is 4 bytes long:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset

Documentation/filesystems/ext4/index.rst

 .. SPDX-License-Identifier: GPL-2.0
 
-===============
-ext4 Filesystem
-===============
-
-General usage and on-disk artifacts writen by ext4.  More documentation may
-be ported from the wiki as time permits.  This should be considered the
-canonical source of information as the details here have been reviewed by
-the ext4 community.
+===================================
+ext4 Data Structures and Algorithms
+===================================
 
 .. toctree::
-   :maxdepth: 5
+   :maxdepth: 6
    :numbered:
 
-   ext4
-   ondisk/index
+   about.rst
+   overview.rst
+   globals.rst
+   dynamic.rst

Documentation/filesystems/ext4/ondisk/inodes.rst → Documentation/filesystems/ext4/inodes.rst

@@ -29,8 +29,9 @@ and the inode structure itself.
 The inode table entry is laid out in ``struct ext4_inode``.
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
+   :class: longtable
 
    * - Offset
      - Size
@@ -176,7 +177,7 @@ The inode table entry is laid out in ``struct ext4_inode``.
 The ``i_mode`` value is a combination of the following flags:
 
 .. list-table::
-   :widths: 1 79
+   :widths: 16 64
    :header-rows: 1
 
    * - Value
@@ -227,7 +228,7 @@ The ``i_mode`` value is a combination of the following flags:
 The ``i_flags`` field is a combination of these values:
 
 .. list-table::
-   :widths: 1 79
+   :widths: 16 64
    :header-rows: 1
 
    * - Value
@@ -314,7 +315,7 @@ The ``osd1`` field has multiple meanings depending on the creator:
 Linux:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -331,7 +332,7 @@ Linux:
 Hurd:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -346,7 +347,7 @@ Hurd:
 Masix:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -365,7 +366,7 @@ The ``osd2`` field has multiple meanings depending on the filesystem creator:
 Linux:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -402,7 +403,7 @@ Linux:
 Hurd:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -433,7 +434,7 @@ Hurd:
 Masix:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset

Documentation/filesystems/ext4/ondisk/journal.rst → Documentation/filesystems/ext4/journal.rst

@@ -48,7 +48,7 @@ Layout
 Generally speaking, the journal has this format:
 
 .. list-table::
-   :widths: 1 1 78
+   :widths: 16 48 16
    :header-rows: 1
 
    * - Superblock
@@ -76,7 +76,7 @@ The journal superblock will be in the next full block after the
 superblock.
 
 .. list-table::
-   :widths: 1 1 1 1 76
+   :widths: 12 12 12 32 12
    :header-rows: 1
 
    * - 1024 bytes of padding
@@ -98,7 +98,7 @@ Every block in the journal starts with a common 12-byte header
 ``struct journal_header_s``:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -124,7 +124,7 @@ Every block in the journal starts with a common 12-byte header
 The journal block type can be any one of:
 
 .. list-table::
-   :widths: 1 79
+   :widths: 16 64
    :header-rows: 1
 
    * - Value
@@ -154,7 +154,7 @@ The journal superblock is recorded as ``struct journal_superblock_s``,
 which is 1024 bytes long:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -264,7 +264,7 @@ which is 1024 bytes long:
 The journal compat features are any combination of the following:
 
 .. list-table::
-   :widths: 1 79
+   :widths: 16 64
    :header-rows: 1
 
    * - Value
@@ -278,7 +278,7 @@ The journal compat features are any combination of the following:
 The journal incompat features are any combination of the following:
 
 .. list-table::
-   :widths: 1 79
+   :widths: 16 64
    :header-rows: 1
 
    * - Value
@@ -306,7 +306,7 @@ Journal checksum type codes are one of the following.  crc32 or crc32c are the
 most likely choices.
 
 .. list-table::
-   :widths: 1 79
+   :widths: 16 64
    :header-rows: 1
 
    * - Value
@@ -330,7 +330,7 @@ described by a data structure, but here is the block structure anyway.
 Descriptor blocks consume at least 36 bytes, but use a full block:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -355,7 +355,7 @@ defined as ``struct journal_block_tag3_s``, which looks like the
 following. The size is 16 or 32 bytes.
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -400,7 +400,7 @@ following. The size is 16 or 32 bytes.
 The journal tag flags are any combination of the following:
 
 .. list-table::
-   :widths: 1 79
+   :widths: 16 64
    :header-rows: 1
 
    * - Value
@@ -421,7 +421,7 @@ is defined as ``struct journal_block_tag_s``, which looks like the
 following. The size is 8, 12, 24, or 28 bytes:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -471,7 +471,7 @@ JBD2\_FEATURE\_INCOMPAT\_CSUM\_V3 are set, the end of the block is a
 ``struct jbd2_journal_block_tail``, which looks like this:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -513,7 +513,7 @@ Revocation blocks are described in
 length, but use a full block:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -543,7 +543,7 @@ JBD2\_FEATURE\_INCOMPAT\_CSUM\_V3 are set, the end of the revocation
 block is a ``struct jbd2_journal_revoke_tail``, which has this format:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -567,7 +567,7 @@ The commit block is described by ``struct commit_header``, which is 32
 bytes long (but uses a full block):
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset

Documentation/filesystems/ext4/ondisk/mmp.rst → Documentation/filesystems/ext4/mmp.rst

@@ -32,7 +32,7 @@ The checksum is calculated against the FS UUID and the MMP structure.
 The MMP structure (``struct mmp_struct``) is as follows:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 12 20 40
    :header-rows: 1
 
    * - Offset

Documentation/filesystems/ext4/ondisk/index.rst

-.. SPDX-License-Identifier: GPL-2.0
-
-==============================
-Data Structures and Algorithms
-==============================
-.. include:: about.rst
-.. include:: overview.rst
-.. include:: globals.rst
-.. include:: dynamic.rst

Documentation/filesystems/ext4/ondisk/special_inodes.rst → Documentation/filesystems/ext4/special_inodes.rst

@@ -6,7 +6,7 @@ Special inodes
 ext4 reserves some inode for special features, as follows:
 
 .. list-table::
-   :widths: 1 79
+   :widths: 6 70
    :header-rows: 1
 
    * - inode Number

Documentation/filesystems/ext4/ondisk/super.rst → Documentation/filesystems/ext4/super.rst

@@ -19,7 +19,7 @@ The ext4 superblock is laid out as follows in
 ``struct ext4_super_block``:
 
 .. list-table::
-   :widths: 1 1 1 77
+   :widths: 8 8 24 40
    :header-rows: 1
 
    * - Offset
@@ -483,7 +483,7 @@ The ext4 superblock is laid out as follows in
 The superblock state is some combination of the following:
 
 .. list-table::
-   :widths: 1 79
+   :widths: 8 72
    :header-rows: 1
 
    * - Value
@@ -500,7 +500,7 @@ The superblock state is some combination of the following:
 The superblock error policy is one of the following:
 
 .. list-table::
-   :widths: 1 79
+   :widths: 8 72
    :header-rows: 1
 
    * - Value
@@ -517,7 +517,7 @@ The superblock error policy is one of the following:
 The filesystem creator is one of the following:
 
 .. list-table::
-   :widths: 1 79
+   :widths: 8 72
    :header-rows: 1
 
    * - Value
@@ -538,7 +538,7 @@ The filesystem creator is one of the following:
 The superblock revision is one of the following:
 
 .. list-table::
-   :widths: 1 79
+   :widths: 8 72
    :header-rows: 1
 
    * - Value
@@ -556,7 +556,7 @@ The superblock compatible features field is a combination of any of the
 following:
 
 .. list-table::
-   :widths: 1 79
+   :widths: 16 64
    :header-rows: 1
 
    * - Value
@@ -595,7 +595,7 @@ The superblock incompatible features field is a combination of any of the
 following:
 
 .. list-table::
-   :widths: 1 79
+   :widths: 16 64
    :header-rows: 1
 
    * - Value
@@ -647,7 +647,7 @@ The superblock read-only compatible features field is a combination of any of
 the following:
 
 .. list-table::
-   :widths: 1 79
+   :widths: 16 64
    :header-rows: 1
 
    * - Value
@@ -702,7 +702,7 @@ the following:
 The ``s_def_hash_version`` field is one of the following:
 
 .. list-table::
-   :widths: 1 79
+   :widths: 8 72
    :header-rows: 1
 
    * - Value
@@ -725,7 +725,7 @@ The ``s_def_hash_version`` field is one of the following:
 The ``s_default_mount_opts`` field is any combination of the following:
 
 .. list-table::
-   :widths: 1 79
+   :widths: 8 72
    :header-rows: 1
 
    * - Value
@@ -767,7 +767,7 @@ The ``s_default_mount_opts`` field is any combination of the following:
 The ``s_flags`` field is any combination of the following:
 
 .. list-table::
-   :widths: 1 79
+   :widths: 8 72
    :header-rows: 1
 
    * - Value
@@ -784,7 +784,7 @@ The ``s_flags`` field is any combination of the following:
 The ``s_encrypt_algos`` list can contain any of the following:
 
 .. list-table::
-   :widths: 1 79
+   :widths: 8 72
    :header-rows: 1
 
    * - Value

fs/ext4/acl.c

@@ -284,12 +284,16 @@ ext4_init_acl(handle_t *handle, struct inode *inode, struct inode *dir)
 		error = __ext4_set_acl(handle, inode, ACL_TYPE_DEFAULT,
 				       default_acl, XATTR_CREATE);
 		posix_acl_release(default_acl);
+	} else {
+		inode->i_default_acl = NULL;
 	}
 	if (acl) {
 		if (!error)
 			error = __ext4_set_acl(handle, inode, ACL_TYPE_ACCESS,
 					       acl, XATTR_CREATE);
 		posix_acl_release(acl);
+	} else {
+		inode->i_acl = NULL;
 	}
 	return error;
 }

fs/ext4/ext4.h

@@ -628,6 +628,7 @@ enum {
 #define EXT4_FREE_BLOCKS_NO_QUOT_UPDATE		0x0008
 #define EXT4_FREE_BLOCKS_NOFREE_FIRST_CLUSTER	0x0010
 #define EXT4_FREE_BLOCKS_NOFREE_LAST_CLUSTER	0x0020
+#define EXT4_FREE_BLOCKS_RERESERVE_CLUSTER      0x0040
 
 /*
  * ioctl commands
@@ -1030,6 +1031,9 @@ struct ext4_inode_info {
 	ext4_lblk_t i_da_metadata_calc_last_lblock;
 	int i_da_metadata_calc_len;
 
+	/* pending cluster reservations for bigalloc file systems */
+	struct ext4_pending_tree i_pending_tree;
+
 	/* on-disk additional length */
 	__u16 i_extra_isize;
 
@@ -1401,7 +1405,8 @@ struct ext4_sb_info {
 	u32 s_min_batch_time;
 	struct block_device *journal_bdev;
 #ifdef CONFIG_QUOTA
-	char *s_qf_names[EXT4_MAXQUOTAS];	/* Names of quota files with journalled quota */
+	/* Names of quota files with journalled quota */
+	char __rcu *s_qf_names[EXT4_MAXQUOTAS];
 	int s_jquota_fmt;			/* Format of quota to use */
 #endif
 	unsigned int s_want_extra_isize; /* New inodes should reserve # bytes */
@@ -2483,10 +2488,11 @@ extern int ext4_writepage_trans_blocks(struct inode *);
 extern int ext4_chunk_trans_blocks(struct inode *, int nrblocks);
 extern int ext4_zero_partial_blocks(handle_t *handle, struct inode *inode,
 			     loff_t lstart, loff_t lend);
-extern int ext4_page_mkwrite(struct vm_fault *vmf);
-extern int ext4_filemap_fault(struct vm_fault *vmf);
+extern vm_fault_t ext4_page_mkwrite(struct vm_fault *vmf);
+extern vm_fault_t ext4_filemap_fault(struct vm_fault *vmf);
 extern qsize_t *ext4_get_reserved_space(struct inode *inode);
 extern int ext4_get_projid(struct inode *inode, kprojid_t *projid);
+extern void ext4_da_release_space(struct inode *inode, int to_free);
 extern void ext4_da_update_reserve_space(struct inode *inode,
 					int used, int quota_claim);
 extern int ext4_issue_zeroout(struct inode *inode, ext4_lblk_t lblk,
@@ -3142,10 +3148,6 @@ extern struct ext4_ext_path *ext4_find_extent(struct inode *, ext4_lblk_t,
 					      int flags);
 extern void ext4_ext_drop_refs(struct ext4_ext_path *);
 extern int ext4_ext_check_inode(struct inode *inode);
-extern int ext4_find_delalloc_range(struct inode *inode,
-				    ext4_lblk_t lblk_start,
-				    ext4_lblk_t lblk_end);
-extern int ext4_find_delalloc_cluster(struct inode *inode, ext4_lblk_t lblk);
 extern ext4_lblk_t ext4_ext_next_allocated_block(struct ext4_ext_path *path);
 extern int ext4_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 			__u64 start, __u64 len);
@@ -3156,6 +3158,7 @@ extern int ext4_swap_extents(handle_t *handle, struct inode *inode1,
 				struct inode *inode2, ext4_lblk_t lblk1,
 			     ext4_lblk_t lblk2,  ext4_lblk_t count,
 			     int mark_unwritten,int *err);
+extern int ext4_clu_mapped(struct inode *inode, ext4_lblk_t lclu);
 
 /* move_extent.c */
 extern void ext4_double_down_write_data_sem(struct inode *first,

fs/ext4/ext4_extents.h

@@ -119,6 +119,19 @@ struct ext4_ext_path {
 	struct buffer_head		*p_bh;
 };
 
+/*
+ * Used to record a portion of a cluster found at the beginning or end
+ * of an extent while traversing the extent tree during space removal.
+ * A partial cluster may be removed if it does not contain blocks shared
+ * with extents that aren't being deleted (tofree state).  Otherwise,
+ * it cannot be removed (nofree state).
+ */
+struct partial_cluster {
+	ext4_fsblk_t pclu;  /* physical cluster number */
+	ext4_lblk_t lblk;   /* logical block number within logical cluster */
+	enum {initial, tofree, nofree} state;
+};
+
 /*
  * structure for external API
  */

fs/ext4/extents_status.h

@@ -78,6 +78,51 @@ struct ext4_es_stats {
 	struct percpu_counter es_stats_shk_cnt;
 };
 
+/*
+ * Pending cluster reservations for bigalloc file systems
+ *
+ * A cluster with a pending reservation is a logical cluster shared by at
+ * least one extent in the extents status tree with delayed and unwritten
+ * status and at least one other written or unwritten extent.  The
+ * reservation is said to be pending because a cluster reservation would
+ * have to be taken in the event all blocks in the cluster shared with
+ * written or unwritten extents were deleted while the delayed and
+ * unwritten blocks remained.
+ *
+ * The set of pending cluster reservations is an auxiliary data structure
+ * used with the extents status tree to implement reserved cluster/block
+ * accounting for bigalloc file systems.  The set is kept in memory and
+ * records all pending cluster reservations.
+ *
+ * Its primary function is to avoid the need to read extents from the
+ * disk when invalidating pages as a result of a truncate, punch hole, or
+ * collapse range operation.  Page invalidation requires a decrease in the
+ * reserved cluster count if it results in the removal of all delayed
+ * and unwritten extents (blocks) from a cluster that is not shared with a
+ * written or unwritten extent, and no decrease otherwise.  Determining
+ * whether the cluster is shared can be done by searching for a pending
+ * reservation on it.
+ *
+ * Secondarily, it provides a potentially faster method for determining
+ * whether the reserved cluster count should be increased when a physical
+ * cluster is deallocated as a result of a truncate, punch hole, or
+ * collapse range operation.  The necessary information is also present
+ * in the extents status tree, but might be more rapidly accessed in
+ * the pending reservation set in many cases due to smaller size.
+ *
+ * The pending cluster reservation set is implemented as a red-black tree
+ * with the goal of minimizing per page search time overhead.
+ */
+
+struct pending_reservation {
+	struct rb_node rb_node;
+	ext4_lblk_t lclu;
+};
+
+struct ext4_pending_tree {
+	struct rb_root root;
+};
+
 extern int __init ext4_init_es(void);
 extern void ext4_exit_es(void);
 extern void ext4_es_init_tree(struct ext4_es_tree *tree);
@@ -90,11 +135,18 @@ extern void ext4_es_cache_extent(struct inode *inode, ext4_lblk_t lblk,
 				 unsigned int status);
 extern int ext4_es_remove_extent(struct inode *inode, ext4_lblk_t lblk,
 				 ext4_lblk_t len);
-extern void ext4_es_find_delayed_extent_range(struct inode *inode,
-					ext4_lblk_t lblk, ext4_lblk_t end,
-					struct extent_status *es);
+extern void ext4_es_find_extent_range(struct inode *inode,
+				      int (*match_fn)(struct extent_status *es),
+				      ext4_lblk_t lblk, ext4_lblk_t end,
+				      struct extent_status *es);
 extern int ext4_es_lookup_extent(struct inode *inode, ext4_lblk_t lblk,
 				 struct extent_status *es);
+extern bool ext4_es_scan_range(struct inode *inode,
+			       int (*matching_fn)(struct extent_status *es),
+			       ext4_lblk_t lblk, ext4_lblk_t end);
+extern bool ext4_es_scan_clu(struct inode *inode,
+			     int (*matching_fn)(struct extent_status *es),
+			     ext4_lblk_t lblk);
 
 static inline unsigned int ext4_es_status(struct extent_status *es)
 {
@@ -126,6 +178,16 @@ static inline int ext4_es_is_hole(struct extent_status *es)
 	return (ext4_es_type(es) & EXTENT_STATUS_HOLE) != 0;
 }
 
+static inline int ext4_es_is_mapped(struct extent_status *es)
+{
+	return (ext4_es_is_written(es) || ext4_es_is_unwritten(es));
+}
+
+static inline int ext4_es_is_delonly(struct extent_status *es)
+{
+	return (ext4_es_is_delayed(es) && !ext4_es_is_unwritten(es));
+}
+
 static inline void ext4_es_set_referenced(struct extent_status *es)
 {
 	es->es_pblk |= ((ext4_fsblk_t)EXTENT_STATUS_REFERENCED) << ES_SHIFT;
@@ -175,4 +237,16 @@ extern void ext4_es_unregister_shrinker(struct ext4_sb_info *sbi);
 
 extern int ext4_seq_es_shrinker_info_show(struct seq_file *seq, void *v);
 
+extern int __init ext4_init_pending(void);
+extern void ext4_exit_pending(void);
+extern void ext4_init_pending_tree(struct ext4_pending_tree *tree);
+extern void ext4_remove_pending(struct inode *inode, ext4_lblk_t lblk);
+extern bool ext4_is_pending(struct inode *inode, ext4_lblk_t lblk);
+extern int ext4_es_insert_delayed_block(struct inode *inode, ext4_lblk_t lblk,
+					bool allocated);
+extern unsigned int ext4_es_delayed_clu(struct inode *inode, ext4_lblk_t lblk,
+					ext4_lblk_t len);
+extern void ext4_es_remove_blks(struct inode *inode, ext4_lblk_t lblk,
+				ext4_lblk_t len);
+
 #endif /* _EXT4_EXTENTS_STATUS_H */

fs/ext4/inline.c

@@ -863,7 +863,7 @@ int ext4_da_write_inline_data_begin(struct address_space *mapping,
 	handle_t *handle;
 	struct page *page;
 	struct ext4_iloc iloc;
-	int retries;
+	int retries = 0;
 
 	ret = ext4_get_inode_loc(inode, &iloc);
 	if (ret)

fs/ext4/inode.c

@@ -577,8 +577,8 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode,
 				EXTENT_STATUS_UNWRITTEN : EXTENT_STATUS_WRITTEN;
 		if (!(flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE) &&
 		    !(status & EXTENT_STATUS_WRITTEN) &&
-		    ext4_find_delalloc_range(inode, map->m_lblk,
-					     map->m_lblk + map->m_len - 1))
+		    ext4_es_scan_range(inode, &ext4_es_is_delayed, map->m_lblk,
+				       map->m_lblk + map->m_len - 1))
 			status |= EXTENT_STATUS_DELAYED;
 		ret = ext4_es_insert_extent(inode, map->m_lblk,
 					    map->m_len, map->m_pblk, status);
@@ -701,8 +701,8 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode,
 				EXTENT_STATUS_UNWRITTEN : EXTENT_STATUS_WRITTEN;
 		if (!(flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE) &&
 		    !(status & EXTENT_STATUS_WRITTEN) &&
-		    ext4_find_delalloc_range(inode, map->m_lblk,
-					     map->m_lblk + map->m_len - 1))
+		    ext4_es_scan_range(inode, &ext4_es_is_delayed, map->m_lblk,
+				       map->m_lblk + map->m_len - 1))
 			status |= EXTENT_STATUS_DELAYED;
 		ret = ext4_es_insert_extent(inode, map->m_lblk, map->m_len,
 					    map->m_pblk, status);
@@ -1595,7 +1595,7 @@ static int ext4_da_reserve_space(struct inode *inode)
 	return 0;       /* success */
 }
 
-static void ext4_da_release_space(struct inode *inode, int to_free)
+void ext4_da_release_space(struct inode *inode, int to_free)
 {
 	struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
 	struct ext4_inode_info *ei = EXT4_I(inode);
@@ -1634,13 +1634,11 @@ static void ext4_da_page_release_reservation(struct page *page,
 					     unsigned int offset,
 					     unsigned int length)
 {
-	int to_release = 0, contiguous_blks = 0;
+	int contiguous_blks = 0;
 	struct buffer_head *head, *bh;
 	unsigned int curr_off = 0;
 	struct inode *inode = page->mapping->host;
-	struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
 	unsigned int stop = offset + length;
-	int num_clusters;
 	ext4_fsblk_t lblk;
 
 	BUG_ON(stop > PAGE_SIZE || stop < length);
@@ -1654,7 +1652,6 @@ static void ext4_da_page_release_reservation(struct page *page,
 			break;
 
 		if ((offset <= curr_off) && (buffer_delay(bh))) {
-			to_release++;
 			contiguous_blks++;
 			clear_buffer_delay(bh);
 		} else if (contiguous_blks) {
@@ -1662,7 +1659,7 @@ static void ext4_da_page_release_reservation(struct page *page,
 			       (PAGE_SHIFT - inode->i_blkbits);
 			lblk += (curr_off >> inode->i_blkbits) -
 				contiguous_blks;
-			ext4_es_remove_extent(inode, lblk, contiguous_blks);
+			ext4_es_remove_blks(inode, lblk, contiguous_blks);
 			contiguous_blks = 0;
 		}
 		curr_off = next_off;
@@ -1671,21 +1668,9 @@ static void ext4_da_page_release_reservation(struct page *page,
 	if (contiguous_blks) {
 		lblk = page->index << (PAGE_SHIFT - inode->i_blkbits);
 		lblk += (curr_off >> inode->i_blkbits) - contiguous_blks;
-		ext4_es_remove_extent(inode, lblk, contiguous_blks);
+		ext4_es_remove_blks(inode, lblk, contiguous_blks);
 	}
 
-	/* If we have released all the blocks belonging to a cluster, then we
-	 * need to release the reserved space for that cluster. */
-	num_clusters = EXT4_NUM_B2C(sbi, to_release);
-	while (num_clusters > 0) {
-		lblk = (page->index << (PAGE_SHIFT - inode->i_blkbits)) +
-			((num_clusters - 1) << sbi->s_cluster_bits);
-		if (sbi->s_cluster_ratio == 1 ||
-		    !ext4_find_delalloc_cluster(inode, lblk))
-			ext4_da_release_space(inode, 1);
-
-		num_clusters--;
-	}
 }
 
 /*
@@ -1780,6 +1765,65 @@ static int ext4_bh_delay_or_unwritten(handle_t *handle, struct buffer_head *bh)
 	return (buffer_delay(bh) || buffer_unwritten(bh)) && buffer_dirty(bh);
 }
 
+/*
+ * ext4_insert_delayed_block - adds a delayed block to the extents status
+ *                             tree, incrementing the reserved cluster/block
+ *                             count or making a pending reservation
+ *                             where needed
+ *
+ * @inode - file containing the newly added block
+ * @lblk - logical block to be added
+ *
+ * Returns 0 on success, negative error code on failure.
+ */
+static int ext4_insert_delayed_block(struct inode *inode, ext4_lblk_t lblk)
+{
+	struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
+	int ret;
+	bool allocated = false;
+
+	/*
+	 * If the cluster containing lblk is shared with a delayed,
+	 * written, or unwritten extent in a bigalloc file system, it's
+	 * already been accounted for and does not need to be reserved.
+	 * A pending reservation must be made for the cluster if it's
+	 * shared with a written or unwritten extent and doesn't already
+	 * have one.  Written and unwritten extents can be purged from the
+	 * extents status tree if the system is under memory pressure, so
+	 * it's necessary to examine the extent tree if a search of the
+	 * extents status tree doesn't get a match.
+	 */
+	if (sbi->s_cluster_ratio == 1) {
+		ret = ext4_da_reserve_space(inode);
+		if (ret != 0)   /* ENOSPC */
+			goto errout;
+	} else {   /* bigalloc */
+		if (!ext4_es_scan_clu(inode, &ext4_es_is_delonly, lblk)) {
+			if (!ext4_es_scan_clu(inode,
+					      &ext4_es_is_mapped, lblk)) {
+				ret = ext4_clu_mapped(inode,
+						      EXT4_B2C(sbi, lblk));
+				if (ret < 0)
+					goto errout;
+				if (ret == 0) {
+					ret = ext4_da_reserve_space(inode);
+					if (ret != 0)   /* ENOSPC */
+						goto errout;
+				} else {
+					allocated = true;
+				}
+			} else {
+				allocated = true;
+			}
+		}
+	}
+
+	ret = ext4_es_insert_delayed_block(inode, lblk, allocated);
+
+errout:
+	return ret;
+}
+
 /*
  * This function is grabs code from the very beginning of
  * ext4_map_blocks, but assumes that the caller is from delayed write
@@ -1859,28 +1903,14 @@ static int ext4_da_map_blocks(struct inode *inode, sector_t iblock,
 add_delayed:
 	if (retval == 0) {
 		int ret;
+
 		/*
 		 * XXX: __block_prepare_write() unmaps passed block,
 		 * is it OK?
 		 */
-		/*
-		 * If the block was allocated from previously allocated cluster,
-		 * then we don't need to reserve it again. However we still need
-		 * to reserve metadata for every block we're going to write.
-		 */
-		if (EXT4_SB(inode->i_sb)->s_cluster_ratio == 1 ||
-		    !ext4_find_delalloc_cluster(inode, map->m_lblk)) {
-			ret = ext4_da_reserve_space(inode);
-			if (ret) {
-				/* not enough space to reserve */
-				retval = ret;
-				goto out_unlock;
-			}
-		}
 
-		ret = ext4_es_insert_extent(inode, map->m_lblk, map->m_len,
-					    ~0, EXTENT_STATUS_DELAYED);
-		if (ret) {
+		ret = ext4_insert_delayed_block(inode, map->m_lblk);
+		if (ret != 0) {
 			retval = ret;
 			goto out_unlock;
 		}
@@ -3450,7 +3480,8 @@ static int ext4_iomap_begin(struct inode *inode, loff_t offset, loff_t length,
 			ext4_lblk_t end = map.m_lblk + map.m_len - 1;
 			struct extent_status es;
 
-			ext4_es_find_delayed_extent_range(inode, map.m_lblk, end, &es);
+			ext4_es_find_extent_range(inode, &ext4_es_is_delayed,
+						  map.m_lblk, end, &es);
 
 			if (!es.es_len || es.es_lblk > end) {
 				/* entire range is a hole */
@@ -6153,13 +6184,14 @@ static int ext4_bh_unmapped(handle_t *handle, struct buffer_head *bh)
 	return !buffer_mapped(bh);
 }
 
-int ext4_page_mkwrite(struct vm_fault *vmf)
+vm_fault_t ext4_page_mkwrite(struct vm_fault *vmf)
 {
 	struct vm_area_struct *vma = vmf->vma;
 	struct page *page = vmf->page;
 	loff_t size;
 	unsigned long len;
-	int ret;
+	int err;
+	vm_fault_t ret;
 	struct file *file = vma->vm_file;
 	struct inode *inode = file_inode(file);
 	struct address_space *mapping = inode->i_mapping;
@@ -6172,8 +6204,8 @@ int ext4_page_mkwrite(struct vm_fault *vmf)
 
 	down_read(&EXT4_I(inode)->i_mmap_sem);
 
-	ret = ext4_convert_inline_data(inode);
-	if (ret)
+	err = ext4_convert_inline_data(inode);
+	if (err)
 		goto out_ret;
 
 	/* Delalloc case is easy... */
@@ -6181,9 +6213,9 @@ int ext4_page_mkwrite(struct vm_fault *vmf)
 	    !ext4_should_journal_data(inode) &&
 	    !ext4_nonda_switch(inode->i_sb)) {
 		do {
-			ret = block_page_mkwrite(vma, vmf,
+			err = block_page_mkwrite(vma, vmf,
 						   ext4_da_get_block_prep);
-		} while (ret == -ENOSPC &&
+		} while (err == -ENOSPC &&
 		       ext4_should_retry_alloc(inode->i_sb, &retries));
 		goto out_ret;
 	}
@@ -6228,8 +6260,8 @@ int ext4_page_mkwrite(struct vm_fault *vmf)
 		ret = VM_FAULT_SIGBUS;
 		goto out;
 	}
-	ret = block_page_mkwrite(vma, vmf, get_block);
-	if (!ret && ext4_should_journal_data(inode)) {
+	err = block_page_mkwrite(vma, vmf, get_block);
+	if (!err && ext4_should_journal_data(inode)) {
 		if (ext4_walk_page_buffers(handle, page_buffers(page), 0,
 			  PAGE_SIZE, NULL, do_journal_get_write_access)) {
 			unlock_page(page);
@@ -6240,24 +6272,24 @@ int ext4_page_mkwrite(struct vm_fault *vmf)
 		ext4_set_inode_state(inode, EXT4_STATE_JDATA);
 	}
 	ext4_journal_stop(handle);
-	if (ret == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries))
+	if (err == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries))
 		goto retry_alloc;
 out_ret:
-	ret = block_page_mkwrite_return(ret);
+	ret = block_page_mkwrite_return(err);
 out:
 	up_read(&EXT4_I(inode)->i_mmap_sem);
 	sb_end_pagefault(inode->i_sb);
 	return ret;
 }
 
-int ext4_filemap_fault(struct vm_fault *vmf)
+vm_fault_t ext4_filemap_fault(struct vm_fault *vmf)
 {
 	struct inode *inode = file_inode(vmf->vma->vm_file);
-	int err;
+	vm_fault_t ret;
 
 	down_read(&EXT4_I(inode)->i_mmap_sem);
-	err = filemap_fault(vmf);
+	ret = filemap_fault(vmf);
 	up_read(&EXT4_I(inode)->i_mmap_sem);
 
-	return err;
+	return ret;
 }

fs/ext4/ioctl.c

@@ -67,7 +67,6 @@ static void swap_inode_data(struct inode *inode1, struct inode *inode2)
 	ei1 = EXT4_I(inode1);
 	ei2 = EXT4_I(inode2);
 
-	swap(inode1->i_flags, inode2->i_flags);
 	swap(inode1->i_version, inode2->i_version);
 	swap(inode1->i_blocks, inode2->i_blocks);
 	swap(inode1->i_bytes, inode2->i_bytes);
@@ -85,6 +84,21 @@ static void swap_inode_data(struct inode *inode1, struct inode *inode2)
 	i_size_write(inode2, isize);
 }
 
+static void reset_inode_seed(struct inode *inode)
+{
+	struct ext4_inode_info *ei = EXT4_I(inode);
+	struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
+	__le32 inum = cpu_to_le32(inode->i_ino);
+	__le32 gen = cpu_to_le32(inode->i_generation);
+	__u32 csum;
+
+	if (!ext4_has_metadata_csum(inode->i_sb))
+		return;
+
+	csum = ext4_chksum(sbi, sbi->s_csum_seed, (__u8 *)&inum, sizeof(inum));
+	ei->i_csum_seed = ext4_chksum(sbi, csum, (__u8 *)&gen, sizeof(gen));
+}
+
 /**
  * Swap the information from the given @inode and the inode
  * EXT4_BOOT_LOADER_INO. It will basically swap i_data and all other
@@ -102,10 +116,13 @@ static long swap_inode_boot_loader(struct super_block *sb,
 	struct inode *inode_bl;
 	struct ext4_inode_info *ei_bl;
 
-	if (inode->i_nlink != 1 || !S_ISREG(inode->i_mode))
+	if (inode->i_nlink != 1 || !S_ISREG(inode->i_mode) ||
+	    IS_SWAPFILE(inode) || IS_ENCRYPTED(inode) ||
+	    ext4_has_inline_data(inode))
 		return -EINVAL;
 
-	if (!inode_owner_or_capable(inode) || !capable(CAP_SYS_ADMIN))
+	if (IS_RDONLY(inode) || IS_APPEND(inode) || IS_IMMUTABLE(inode) ||
+	    !inode_owner_or_capable(inode) || !capable(CAP_SYS_ADMIN))
 		return -EPERM;
 
 	inode_bl = ext4_iget(sb, EXT4_BOOT_LOADER_INO);
@@ -120,13 +137,13 @@ static long swap_inode_boot_loader(struct super_block *sb,
 	 * that only 1 swap_inode_boot_loader is running. */
 	lock_two_nondirectories(inode, inode_bl);
 
-	truncate_inode_pages(&inode->i_data, 0);
-	truncate_inode_pages(&inode_bl->i_data, 0);
-
 	/* Wait for all existing dio workers */
 	inode_dio_wait(inode);
 	inode_dio_wait(inode_bl);
 
+	truncate_inode_pages(&inode->i_data, 0);
+	truncate_inode_pages(&inode_bl->i_data, 0);
+
 	handle = ext4_journal_start(inode_bl, EXT4_HT_MOVE_EXTENTS, 2);
 	if (IS_ERR(handle)) {
 		err = -EINVAL;
@@ -159,6 +176,8 @@ static long swap_inode_boot_loader(struct super_block *sb,
 
 	inode->i_generation = prandom_u32();
 	inode_bl->i_generation = prandom_u32();
+	reset_inode_seed(inode);
+	reset_inode_seed(inode_bl);
 
 	ext4_discard_preallocations(inode);
 
@@ -169,6 +188,7 @@ static long swap_inode_boot_loader(struct super_block *sb,
 			inode->i_ino, err);
 		/* Revert all changes: */
 		swap_inode_data(inode, inode_bl);
+		ext4_mark_inode_dirty(handle, inode);
 	} else {
 		err = ext4_mark_inode_dirty(handle, inode_bl);
 		if (err < 0) {
@@ -178,6 +198,7 @@ static long swap_inode_boot_loader(struct super_block *sb,
 			/* Revert all changes: */
 			swap_inode_data(inode, inode_bl);
 			ext4_mark_inode_dirty(handle, inode);
+			ext4_mark_inode_dirty(handle, inode_bl);
 		}
 	}
 	ext4_journal_stop(handle);
@@ -339,19 +360,14 @@ static int ext4_ioctl_setproject(struct file *filp, __u32 projid)
 	if (projid_eq(kprojid, EXT4_I(inode)->i_projid))
 		return 0;
 
-	err = mnt_want_write_file(filp);
-	if (err)
-		return err;
-
 	err = -EPERM;
-	inode_lock(inode);
 	/* Is it quota file? Do not allow user to mess with it */
 	if (ext4_is_quota_file(inode))
-		goto out_unlock;
+		return err;
 
 	err = ext4_get_inode_loc(inode, &iloc);
 	if (err)
-		goto out_unlock;
+		return err;
 
 	raw_inode = ext4_raw_inode(&iloc);
 	if (!EXT4_FITS_IN_INODE(raw_inode, ei, i_projid)) {
@@ -359,20 +375,20 @@ static int ext4_ioctl_setproject(struct file *filp, __u32 projid)
 					      EXT4_SB(sb)->s_want_extra_isize,
 					      &iloc);
 		if (err)
-			goto out_unlock;
+			return err;
 	} else {
 		brelse(iloc.bh);
 	}
 
-	dquot_initialize(inode);
+	err = dquot_initialize(inode);
+	if (err)
+		return err;
 
 	handle = ext4_journal_start(inode, EXT4_HT_QUOTA,
 		EXT4_QUOTA_INIT_BLOCKS(sb) +
 		EXT4_QUOTA_DEL_BLOCKS(sb) + 3);
-	if (IS_ERR(handle)) {
-		err = PTR_ERR(handle);
-		goto out_unlock;
-	}
+	if (IS_ERR(handle))
+		return PTR_ERR(handle);
 
 	err = ext4_reserve_inode_write(handle, inode, &iloc);
 	if (err)
@@ -400,9 +416,6 @@ static int ext4_ioctl_setproject(struct file *filp, __u32 projid)
 		err = rc;
 out_stop:
 	ext4_journal_stop(handle);
-out_unlock:
-	inode_unlock(inode);
-	mnt_drop_write_file(filp);
 	return err;
 }
 #else
@@ -626,6 +639,30 @@ static long ext4_ioctl_group_add(struct file *file,
 	return err;
 }
 
+static int ext4_ioctl_check_project(struct inode *inode, struct fsxattr *fa)
+{
+	/*
+	 * Project Quota ID state is only allowed to change from within the init
+	 * namespace. Enforce that restriction only if we are trying to change
+	 * the quota ID state. Everything else is allowed in user namespaces.
+	 */
+	if (current_user_ns() == &init_user_ns)
+		return 0;
+
+	if (__kprojid_val(EXT4_I(inode)->i_projid) != fa->fsx_projid)
+		return -EINVAL;
+
+	if (ext4_test_inode_flag(inode, EXT4_INODE_PROJINHERIT)) {
+		if (!(fa->fsx_xflags & FS_XFLAG_PROJINHERIT))
+			return -EINVAL;
+	} else {
+		if (fa->fsx_xflags & FS_XFLAG_PROJINHERIT)
+			return -EINVAL;
+	}
+
+	return 0;
+}
+
 long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
 	struct inode *inode = file_inode(filp);
@@ -1025,19 +1062,19 @@ long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 			return err;
 
 		inode_lock(inode);
+		err = ext4_ioctl_check_project(inode, &fa);
+		if (err)
+			goto out;
 		flags = (ei->i_flags & ~EXT4_FL_XFLAG_VISIBLE) |
 			 (flags & EXT4_FL_XFLAG_VISIBLE);
 		err = ext4_ioctl_setflags(inode, flags);
-		inode_unlock(inode);
-		mnt_drop_write_file(filp);
 		if (err)
-			return err;
-
+			goto out;
 		err = ext4_ioctl_setproject(filp, fa.fsx_projid);
-		if (err)
-			return err;
-
-		return 0;
+out:
+		inode_unlock(inode);
+		mnt_drop_write_file(filp);
+		return err;
 	}
 	case EXT4_IOC_SHUTDOWN:
 		return ext4_shutdown(sb, arg);

fs/ext4/mballoc.c

@@ -4915,9 +4915,17 @@ void ext4_free_blocks(handle_t *handle, struct inode *inode,
 			     &sbi->s_flex_groups[flex_group].free_clusters);
 	}
 
-	if (!(flags & EXT4_FREE_BLOCKS_NO_QUOT_UPDATE))
-		dquot_free_block(inode, EXT4_C2B(sbi, count_clusters));
-	percpu_counter_add(&sbi->s_freeclusters_counter, count_clusters);
+	/*
+	 * on a bigalloc file system, defer the s_freeclusters_counter
+	 * update to the caller (ext4_remove_space and friends) so they
+	 * can determine if a cluster freed here should be rereserved
+	 */
+	if (!(flags & EXT4_FREE_BLOCKS_RERESERVE_CLUSTER)) {
+		if (!(flags & EXT4_FREE_BLOCKS_NO_QUOT_UPDATE))
+			dquot_free_block(inode, EXT4_C2B(sbi, count_clusters));
+		percpu_counter_add(&sbi->s_freeclusters_counter,
+				   count_clusters);
+	}
 
 	ext4_mb_unload_buddy(&e4b);
 

fs/ext4/move_extent.c

@@ -516,9 +516,13 @@ mext_check_arguments(struct inode *orig_inode,
 			orig_inode->i_ino, donor_inode->i_ino);
 		return -EINVAL;
 	}
-	if (orig_eof < orig_start + *len - 1)
+	if (orig_eof <= orig_start)
+		*len = 0;
+	else if (orig_eof < orig_start + *len - 1)
 		*len = orig_eof - orig_start;
-	if (donor_eof < donor_start + *len - 1)
+	if (donor_eof <= donor_start)
+		*len = 0;
+	else if (donor_eof < donor_start + *len - 1)
 		*len = donor_eof - donor_start;
 	if (!*len) {
 		ext4_debug("ext4 move extent: len should not be 0 "

fs/ext4/namei.c

@@ -2261,7 +2261,7 @@ static int ext4_dx_add_entry(handle_t *handle, struct ext4_filename *fname,
 			dxroot->info.indirect_levels += 1;
 			dxtrace(printk(KERN_DEBUG
 				       "Creating %d level index...\n",
-				       info->indirect_levels));
+				       dxroot->info.indirect_levels));
 			err = ext4_handle_dirty_dx_node(handle, dir, frame->bh);
 			if (err)
 				goto journal_error;

fs/ext4/super.c

@@ -914,6 +914,18 @@ static inline void ext4_quota_off_umount(struct super_block *sb)
 	for (type = 0; type < EXT4_MAXQUOTAS; type++)
 		ext4_quota_off(sb, type);
 }
+
+/*
+ * This is a helper function which is used in the mount/remount
+ * codepaths (which holds s_umount) to fetch the quota file name.
+ */
+static inline char *get_qf_name(struct super_block *sb,
+				struct ext4_sb_info *sbi,
+				int type)
+{
+	return rcu_dereference_protected(sbi->s_qf_names[type],
+					 lockdep_is_held(&sb->s_umount));
+}
 #else
 static inline void ext4_quota_off_umount(struct super_block *sb)
 {
@@ -965,7 +977,7 @@ static void ext4_put_super(struct super_block *sb)
 	percpu_free_rwsem(&sbi->s_journal_flag_rwsem);
 #ifdef CONFIG_QUOTA
 	for (i = 0; i < EXT4_MAXQUOTAS; i++)
-		kfree(sbi->s_qf_names[i]);
+		kfree(get_qf_name(sb, sbi, i));
 #endif
 
 	/* Debugging code just in case the in-memory inode orphan list
@@ -1040,6 +1052,7 @@ static struct inode *ext4_alloc_inode(struct super_block *sb)
 	ei->i_da_metadata_calc_len = 0;
 	ei->i_da_metadata_calc_last_lblock = 0;
 	spin_lock_init(&(ei->i_block_reservation_lock));
+	ext4_init_pending_tree(&ei->i_pending_tree);
 #ifdef CONFIG_QUOTA
 	ei->i_reserved_quota = 0;
 	memset(&ei->i_dquot, 0, sizeof(ei->i_dquot));
@@ -1530,11 +1543,10 @@ static const char deprecated_msg[] =
 static int set_qf_name(struct super_block *sb, int qtype, substring_t *args)
 {
 	struct ext4_sb_info *sbi = EXT4_SB(sb);
-	char *qname;
+	char *qname, *old_qname = get_qf_name(sb, sbi, qtype);
 	int ret = -1;
 
-	if (sb_any_quota_loaded(sb) &&
-		!sbi->s_qf_names[qtype]) {
+	if (sb_any_quota_loaded(sb) && !old_qname) {
 		ext4_msg(sb, KERN_ERR,
 			"Cannot change journaled "
 			"quota options when quota turned on");
@@ -1551,8 +1563,8 @@ static int set_qf_name(struct super_block *sb, int qtype, substring_t *args)
 			"Not enough memory for storing quotafile name");
 		return -1;
 	}
-	if (sbi->s_qf_names[qtype]) {
-		if (strcmp(sbi->s_qf_names[qtype], qname) == 0)
+	if (old_qname) {
+		if (strcmp(old_qname, qname) == 0)
 			ret = 1;
 		else
 			ext4_msg(sb, KERN_ERR,
@@ -1565,7 +1577,7 @@ static int set_qf_name(struct super_block *sb, int qtype, substring_t *args)
 			"quotafile must be on filesystem root");
 		goto errout;
 	}
-	sbi->s_qf_names[qtype] = qname;
+	rcu_assign_pointer(sbi->s_qf_names[qtype], qname);
 	set_opt(sb, QUOTA);
 	return 1;
 errout:
@@ -1577,15 +1589,16 @@ static int clear_qf_name(struct super_block *sb, int qtype)
 {
 
 	struct ext4_sb_info *sbi = EXT4_SB(sb);
+	char *old_qname = get_qf_name(sb, sbi, qtype);
 
-	if (sb_any_quota_loaded(sb) &&
-		sbi->s_qf_names[qtype]) {
+	if (sb_any_quota_loaded(sb) && old_qname) {
 		ext4_msg(sb, KERN_ERR, "Cannot change journaled quota options"
 			" when quota turned on");
 		return -1;
 	}
-	kfree(sbi->s_qf_names[qtype]);
-	sbi->s_qf_names[qtype] = NULL;
+	rcu_assign_pointer(sbi->s_qf_names[qtype], NULL);
+	synchronize_rcu();
+	kfree(old_qname);
 	return 1;
 }
 #endif
@@ -1960,7 +1973,7 @@ static int parse_options(char *options, struct super_block *sb,
 			 int is_remount)
 {
 	struct ext4_sb_info *sbi = EXT4_SB(sb);
-	char *p;
+	char *p, __maybe_unused *usr_qf_name, __maybe_unused *grp_qf_name;
 	substring_t args[MAX_OPT_ARGS];
 	int token;
 
@@ -1991,11 +2004,13 @@ static int parse_options(char *options, struct super_block *sb,
 			 "Cannot enable project quota enforcement.");
 		return 0;
 	}
-	if (sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) {
-		if (test_opt(sb, USRQUOTA) && sbi->s_qf_names[USRQUOTA])
+	usr_qf_name = get_qf_name(sb, sbi, USRQUOTA);
+	grp_qf_name = get_qf_name(sb, sbi, GRPQUOTA);
+	if (usr_qf_name || grp_qf_name) {
+		if (test_opt(sb, USRQUOTA) && usr_qf_name)
 			clear_opt(sb, USRQUOTA);
 
-		if (test_opt(sb, GRPQUOTA) && sbi->s_qf_names[GRPQUOTA])
+		if (test_opt(sb, GRPQUOTA) && grp_qf_name)
 			clear_opt(sb, GRPQUOTA);
 
 		if (test_opt(sb, GRPQUOTA) || test_opt(sb, USRQUOTA)) {
@@ -2029,6 +2044,7 @@ static inline void ext4_show_quota_options(struct seq_file *seq,
 {
 #if defined(CONFIG_QUOTA)
 	struct ext4_sb_info *sbi = EXT4_SB(sb);
+	char *usr_qf_name, *grp_qf_name;
 
 	if (sbi->s_jquota_fmt) {
 		char *fmtname = "";
@@ -2047,11 +2063,14 @@ static inline void ext4_show_quota_options(struct seq_file *seq,
 		seq_printf(seq, ",jqfmt=%s", fmtname);
 	}
 
-	if (sbi->s_qf_names[USRQUOTA])
-		seq_show_option(seq, "usrjquota", sbi->s_qf_names[USRQUOTA]);
-
-	if (sbi->s_qf_names[GRPQUOTA])
-		seq_show_option(seq, "grpjquota", sbi->s_qf_names[GRPQUOTA]);
+	rcu_read_lock();
+	usr_qf_name = rcu_dereference(sbi->s_qf_names[USRQUOTA]);
+	grp_qf_name = rcu_dereference(sbi->s_qf_names[GRPQUOTA]);
+	if (usr_qf_name)
+		seq_show_option(seq, "usrjquota", usr_qf_name);
+	if (grp_qf_name)
+		seq_show_option(seq, "grpjquota", grp_qf_name);
+	rcu_read_unlock();
 #endif
 }
 
@@ -5103,6 +5122,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
 	int err = 0;
 #ifdef CONFIG_QUOTA
 	int i, j;
+	char *to_free[EXT4_MAXQUOTAS];
 #endif
 	char *orig_data = kstrdup(data, GFP_KERNEL);
 
@@ -5122,8 +5142,9 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
 	old_opts.s_jquota_fmt = sbi->s_jquota_fmt;
 	for (i = 0; i < EXT4_MAXQUOTAS; i++)
 		if (sbi->s_qf_names[i]) {
-			old_opts.s_qf_names[i] = kstrdup(sbi->s_qf_names[i],
-							 GFP_KERNEL);
+			char *qf_name = get_qf_name(sb, sbi, i);
+
+			old_opts.s_qf_names[i] = kstrdup(qf_name, GFP_KERNEL);
 			if (!old_opts.s_qf_names[i]) {
 				for (j = 0; j < i; j++)
 					kfree(old_opts.s_qf_names[j]);
@@ -5352,9 +5373,12 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
 #ifdef CONFIG_QUOTA
 	sbi->s_jquota_fmt = old_opts.s_jquota_fmt;
 	for (i = 0; i < EXT4_MAXQUOTAS; i++) {
-		kfree(sbi->s_qf_names[i]);
-		sbi->s_qf_names[i] = old_opts.s_qf_names[i];
+		to_free[i] = get_qf_name(sb, sbi, i);
+		rcu_assign_pointer(sbi->s_qf_names[i], old_opts.s_qf_names[i]);
 	}
+	synchronize_rcu();
+	for (i = 0; i < EXT4_MAXQUOTAS; i++)
+		kfree(to_free[i]);
 #endif
 	kfree(orig_data);
 	return err;
@@ -5545,7 +5569,7 @@ static int ext4_write_info(struct super_block *sb, int type)
  */
 static int ext4_quota_on_mount(struct super_block *sb, int type)
 {
-	return dquot_quota_on_mount(sb, EXT4_SB(sb)->s_qf_names[type],
+	return dquot_quota_on_mount(sb, get_qf_name(sb, EXT4_SB(sb), type),
 					EXT4_SB(sb)->s_jquota_fmt, type);
 }
 
@@ -5954,6 +5978,10 @@ static int __init ext4_init_fs(void)
 	if (err)
 		return err;
 
+	err = ext4_init_pending();
+	if (err)
+		goto out6;
+
 	err = ext4_init_pageio();
 	if (err)
 		goto out5;
@@ -5992,6 +6020,8 @@ static int __init ext4_init_fs(void)
 out4:
 	ext4_exit_pageio();
 out5:
+	ext4_exit_pending();
+out6:
 	ext4_exit_es();
 
 	return err;
@@ -6009,6 +6039,7 @@ static void __exit ext4_exit_fs(void)
 	ext4_exit_system_zone();
 	ext4_exit_pageio();
 	ext4_exit_es();
+	ext4_exit_pending();
 }
 
 MODULE_AUTHOR("Remy Card, Stephen Tweedie, Andrew Morton, Andreas Dilger, Theodore Ts'o and others");

fs/jbd2/checkpoint.c

@@ -251,8 +251,8 @@ int jbd2_log_do_checkpoint(journal_t *journal)
 		bh = jh2bh(jh);
 
 		if (buffer_locked(bh)) {
-			spin_unlock(&journal->j_list_lock);
 			get_bh(bh);
+			spin_unlock(&journal->j_list_lock);
 			wait_on_buffer(bh);
 			/* the journal_head may have gone by now */
 			BUFFER_TRACE(bh, "brelse");
@@ -333,8 +333,8 @@ int jbd2_log_do_checkpoint(journal_t *journal)
 		jh = transaction->t_checkpoint_io_list;
 		bh = jh2bh(jh);
 		if (buffer_locked(bh)) {
-			spin_unlock(&journal->j_list_lock);
 			get_bh(bh);
+			spin_unlock(&journal->j_list_lock);
 			wait_on_buffer(bh);
 			/* the journal_head may have gone by now */
 			BUFFER_TRACE(bh, "brelse");

include/linux/buffer_head.h

@@ -242,7 +242,7 @@ int block_commit_write(struct page *page, unsigned from, unsigned to);
 int block_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf,
 				get_block_t get_block);
 /* Convert errno to return value from ->page_mkwrite() call */
-static inline int block_page_mkwrite_return(int err)
+static inline vm_fault_t block_page_mkwrite_return(int err)
 {
 	if (err == 0)
 		return VM_FAULT_LOCKED;

include/trace/events/ext4.h

@@ -17,6 +17,7 @@ struct mpage_da_data;
 struct ext4_map_blocks;
 struct extent_status;
 struct ext4_fsmap;
+struct partial_cluster;
 
 #define EXT4_I(inode) (container_of(inode, struct ext4_inode_info, vfs_inode))
 
@@ -2035,21 +2036,23 @@ TRACE_EVENT(ext4_ext_show_extent,
 );
 
 TRACE_EVENT(ext4_remove_blocks,
-	    TP_PROTO(struct inode *inode, struct ext4_extent *ex,
-		ext4_lblk_t from, ext4_fsblk_t to,
-		long long partial_cluster),
+	TP_PROTO(struct inode *inode, struct ext4_extent *ex,
+		 ext4_lblk_t from, ext4_fsblk_t to,
+		 struct partial_cluster *pc),
 
-	TP_ARGS(inode, ex, from, to, partial_cluster),
+	TP_ARGS(inode, ex, from, to, pc),
 
 	TP_STRUCT__entry(
 		__field(	dev_t,		dev	)
 		__field(	ino_t,		ino	)
 		__field(	ext4_lblk_t,	from	)
 		__field(	ext4_lblk_t,	to	)
-		__field(	long long,	partial	)
 		__field(	ext4_fsblk_t,	ee_pblk	)
 		__field(	ext4_lblk_t,	ee_lblk	)
 		__field(	unsigned short,	ee_len	)
+		__field(	ext4_fsblk_t,	pc_pclu	)
+		__field(	ext4_lblk_t,	pc_lblk	)
+		__field(	int,		pc_state)
 	),
 
 	TP_fast_assign(
@@ -2057,14 +2060,16 @@ TRACE_EVENT(ext4_remove_blocks,
 		__entry->ino		= inode->i_ino;
 		__entry->from		= from;
 		__entry->to		= to;
-		__entry->partial	= partial_cluster;
 		__entry->ee_pblk	= ext4_ext_pblock(ex);
 		__entry->ee_lblk	= le32_to_cpu(ex->ee_block);
 		__entry->ee_len		= ext4_ext_get_actual_len(ex);
+		__entry->pc_pclu	= pc->pclu;
+		__entry->pc_lblk	= pc->lblk;
+		__entry->pc_state	= pc->state;
 	),
 
 	TP_printk("dev %d,%d ino %lu extent [%u(%llu), %u]"
-		  "from %u to %u partial_cluster %lld",
+		  "from %u to %u partial [pclu %lld lblk %u state %d]",
 		  MAJOR(__entry->dev), MINOR(__entry->dev),
 		  (unsigned long) __entry->ino,
 		  (unsigned) __entry->ee_lblk,
@@ -2072,45 +2077,53 @@ TRACE_EVENT(ext4_remove_blocks,
 		  (unsigned short) __entry->ee_len,
 		  (unsigned) __entry->from,
 		  (unsigned) __entry->to,
-		  (long long) __entry->partial)
+		  (long long) __entry->pc_pclu,
+		  (unsigned int) __entry->pc_lblk,
+		  (int) __entry->pc_state)
 );
 
 TRACE_EVENT(ext4_ext_rm_leaf,
 	TP_PROTO(struct inode *inode, ext4_lblk_t start,
 		 struct ext4_extent *ex,
-		 long long partial_cluster),
+		 struct partial_cluster *pc),
 
-	TP_ARGS(inode, start, ex, partial_cluster),
+	TP_ARGS(inode, start, ex, pc),
 
 	TP_STRUCT__entry(
 		__field(	dev_t,		dev	)
 		__field(	ino_t,		ino	)
-		__field(	long long,	partial	)
 		__field(	ext4_lblk_t,	start	)
 		__field(	ext4_lblk_t,	ee_lblk	)
 		__field(	ext4_fsblk_t,	ee_pblk	)
 		__field(	short,		ee_len	)
+		__field(	ext4_fsblk_t,	pc_pclu	)
+		__field(	ext4_lblk_t,	pc_lblk	)
+		__field(	int,		pc_state)
 	),
 
 	TP_fast_assign(
 		__entry->dev		= inode->i_sb->s_dev;
 		__entry->ino		= inode->i_ino;
-		__entry->partial	= partial_cluster;
 		__entry->start		= start;
 		__entry->ee_lblk	= le32_to_cpu(ex->ee_block);
 		__entry->ee_pblk	= ext4_ext_pblock(ex);
 		__entry->ee_len		= ext4_ext_get_actual_len(ex);
+		__entry->pc_pclu	= pc->pclu;
+		__entry->pc_lblk	= pc->lblk;
+		__entry->pc_state	= pc->state;
 	),
 
 	TP_printk("dev %d,%d ino %lu start_lblk %u last_extent [%u(%llu), %u]"
-		  "partial_cluster %lld",
+		  "partial [pclu %lld lblk %u state %d]",
 		  MAJOR(__entry->dev), MINOR(__entry->dev),
 		  (unsigned long) __entry->ino,
 		  (unsigned) __entry->start,
 		  (unsigned) __entry->ee_lblk,
 		  (unsigned long long) __entry->ee_pblk,
 		  (unsigned short) __entry->ee_len,
-		  (long long) __entry->partial)
+		  (long long) __entry->pc_pclu,
+		  (unsigned int) __entry->pc_lblk,
+		  (int) __entry->pc_state)
 );
 
 TRACE_EVENT(ext4_ext_rm_idx,
@@ -2168,9 +2181,9 @@ TRACE_EVENT(ext4_ext_remove_space,
 
 TRACE_EVENT(ext4_ext_remove_space_done,
 	TP_PROTO(struct inode *inode, ext4_lblk_t start, ext4_lblk_t end,
-		 int depth, long long partial, __le16 eh_entries),
+		 int depth, struct partial_cluster *pc, __le16 eh_entries),
 
-	TP_ARGS(inode, start, end, depth, partial, eh_entries),
+	TP_ARGS(inode, start, end, depth, pc, eh_entries),
 
 	TP_STRUCT__entry(
 		__field(	dev_t,		dev		)
@@ -2178,7 +2191,9 @@ TRACE_EVENT(ext4_ext_remove_space_done,
 		__field(	ext4_lblk_t,	start		)
 		__field(	ext4_lblk_t,	end		)
 		__field(	int,		depth		)
-		__field(	long long,	partial		)
+		__field(	ext4_fsblk_t,	pc_pclu		)
+		__field(	ext4_lblk_t,	pc_lblk		)
+		__field(	int,		pc_state	)
 		__field(	unsigned short,	eh_entries	)
 	),
 
@@ -2188,18 +2203,23 @@ TRACE_EVENT(ext4_ext_remove_space_done,
 		__entry->start		= start;
 		__entry->end		= end;
 		__entry->depth		= depth;
-		__entry->partial	= partial;
+		__entry->pc_pclu	= pc->pclu;
+		__entry->pc_lblk	= pc->lblk;
+		__entry->pc_state	= pc->state;
 		__entry->eh_entries	= le16_to_cpu(eh_entries);
 	),
 
-	TP_printk("dev %d,%d ino %lu since %u end %u depth %d partial %lld "
+	TP_printk("dev %d,%d ino %lu since %u end %u depth %d "
+		  "partial [pclu %lld lblk %u state %d] "
 		  "remaining_entries %u",
 		  MAJOR(__entry->dev), MINOR(__entry->dev),
 		  (unsigned long) __entry->ino,
 		  (unsigned) __entry->start,
 		  (unsigned) __entry->end,
 		  __entry->depth,
-		  (long long) __entry->partial,
+		  (long long) __entry->pc_pclu,
+		  (unsigned int) __entry->pc_lblk,
+		  (int) __entry->pc_state,
 		  (unsigned short) __entry->eh_entries)
 );
 
@@ -2270,7 +2290,7 @@ TRACE_EVENT(ext4_es_remove_extent,
 		  __entry->lblk, __entry->len)
 );
 
-TRACE_EVENT(ext4_es_find_delayed_extent_range_enter,
+TRACE_EVENT(ext4_es_find_extent_range_enter,
 	TP_PROTO(struct inode *inode, ext4_lblk_t lblk),
 
 	TP_ARGS(inode, lblk),
@@ -2292,7 +2312,7 @@ TRACE_EVENT(ext4_es_find_delayed_extent_range_enter,
 		  (unsigned long) __entry->ino, __entry->lblk)
 );
 
-TRACE_EVENT(ext4_es_find_delayed_extent_range_exit,
+TRACE_EVENT(ext4_es_find_extent_range_exit,
 	TP_PROTO(struct inode *inode, struct extent_status *es),
 
 	TP_ARGS(inode, es),
@@ -2512,6 +2532,41 @@ TRACE_EVENT(ext4_es_shrink,
 		  __entry->scan_time, __entry->nr_skipped, __entry->retried)
 );
 
+TRACE_EVENT(ext4_es_insert_delayed_block,
+	TP_PROTO(struct inode *inode, struct extent_status *es,
+		 bool allocated),
+
+	TP_ARGS(inode, es, allocated),
+
+	TP_STRUCT__entry(
+		__field(	dev_t,		dev		)
+		__field(	ino_t,		ino		)
+		__field(	ext4_lblk_t,	lblk		)
+		__field(	ext4_lblk_t,	len		)
+		__field(	ext4_fsblk_t,	pblk		)
+		__field(	char,		status		)
+		__field(	bool,		allocated	)
+	),
+
+	TP_fast_assign(
+		__entry->dev		= inode->i_sb->s_dev;
+		__entry->ino		= inode->i_ino;
+		__entry->lblk		= es->es_lblk;
+		__entry->len		= es->es_len;
+		__entry->pblk		= ext4_es_pblock(es);
+		__entry->status		= ext4_es_status(es);
+		__entry->allocated	= allocated;
+	),
+
+	TP_printk("dev %d,%d ino %lu es [%u/%u) mapped %llu status %s "
+		  "allocated %d",
+		  MAJOR(__entry->dev), MINOR(__entry->dev),
+		  (unsigned long) __entry->ino,
+		  __entry->lblk, __entry->len,
+		  __entry->pblk, show_extent_status(__entry->status),
+		  __entry->allocated)
+);
+
 /* fsmap traces */
 DECLARE_EVENT_CLASS(ext4_fsmap_class,
 	TP_PROTO(struct super_block *sb, u32 keydev, u32 agno, u64 bno, u64 len,