Merge tag 'ext4_for_linux-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 updates from Ted Ts'o:

 - Refactor code paths involved with partial block zero-out in
   prearation for converting ext4 to use iomap for buffered writes

 - Remove use of d_alloc() from ext4 in preparation for the deprecation
   of this interface

 - Replace some J_ASSERTS with a journal abort so we can avoid a kernel
   panic for a localized file system error

 - Simplify various code paths in mballoc, move_extent, and fast commit

 - Fix rare deadlock in jbd2_journal_cancel_revoke() that can be
   triggered by generic/013 when blocksize < pagesize

 - Fix memory leak when releasing an extended attribute when its value
   is stored in an ea_inode

 - Fix various potential kunit test bugs in fs/ext4/extents.c

 - Fix potential out-of-bounds access in check_xattr() with a corrupted
   file system

 - Make the jbd2_inode dirty range tracking safe for lockless reads

 - Avoid a WARN_ON when writeback files due to a corrupted file system;
   we already print an ext4 warning indicatign that data will be lost,
   so the WARN_ON is not necessary and doesn't add any new information

* tag 'ext4_for_linux-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (37 commits)
  jbd2: fix deadlock in jbd2_journal_cancel_revoke()
  ext4: fix missing brelse() in ext4_xattr_inode_dec_ref_all()
  ext4: fix possible null-ptr-deref in mbt_kunit_exit()
  ext4: fix possible null-ptr-deref in extents_kunit_exit()
  ext4: fix the error handling process in extents_kunit_init).
  ext4: call deactivate_super() in extents_kunit_exit()
  ext4: fix miss unlock 'sb->s_umount' in extents_kunit_init()
  ext4: fix bounds check in check_xattrs() to prevent out-of-bounds access
  ext4: zero post-EOF partial block before appending write
  ext4: move pagecache_isize_extended() out of active handle
  ext4: remove ctime/mtime update from ext4_alloc_file_blocks()
  ext4: unify SYNC mode checks in fallocate paths
  ext4: ensure zeroed partial blocks are persisted in SYNC mode
  ext4: move zero partial block range functions out of active handle
  ext4: pass allocate range as loff_t to ext4_alloc_file_blocks()
  ext4: remove handle parameters from zero partial block functions
  ext4: move ordered data handling out of ext4_block_do_zero_range()
  ext4: rename ext4_block_zero_page_range() to ext4_block_zero_range()
  ext4: factor out journalled block zeroing range
  ext4: rename and extend ext4_block_truncate_page()
  ...

Author: torvalds

fs/ext4/ext4.h

@@ -28,7 +28,6 @@
 #include <linux/seqlock.h>
 #include <linux/mutex.h>
 #include <linux/timer.h>
-#include <linux/wait.h>
 #include <linux/sched/signal.h>
 #include <linux/blockgroup_lock.h>
 #include <linux/percpu_counter.h>
@@ -1082,9 +1081,6 @@ struct ext4_inode_info {
 
 	spinlock_t i_raw_lock;	/* protects updates to the raw inode */
 
-	/* Fast commit wait queue for this inode */
-	wait_queue_head_t i_fc_wait;
-
 	/*
 	 * Protect concurrent accesses on i_fc_lblk_start, i_fc_lblk_len
 	 * and inode's EXT4_FC_STATE_COMMITTING state bit.
@@ -2976,7 +2972,8 @@ void __ext4_fc_track_unlink(handle_t *handle, struct inode *inode,
 void __ext4_fc_track_link(handle_t *handle, struct inode *inode,
 	struct dentry *dentry);
 void ext4_fc_track_unlink(handle_t *handle, struct dentry *dentry);
-void ext4_fc_track_link(handle_t *handle, struct dentry *dentry);
+void ext4_fc_track_link(handle_t *handle, struct inode *inode,
+			struct dentry *dentry);
 void __ext4_fc_track_create(handle_t *handle, struct inode *inode,
 			    struct dentry *dentry);
 void ext4_fc_track_create(handle_t *handle, struct dentry *dentry);
@@ -3101,8 +3098,9 @@ extern int ext4_chunk_trans_blocks(struct inode *, int nrblocks);
 extern int ext4_chunk_trans_extent(struct inode *inode, int nrblocks);
 extern int ext4_meta_trans_blocks(struct inode *inode, int lblocks,
 				  int pextents);
-extern int ext4_zero_partial_blocks(handle_t *handle, struct inode *inode,
-			     loff_t lstart, loff_t lend);
+extern int ext4_block_zero_eof(struct inode *inode, loff_t from, loff_t end);
+extern int ext4_zero_partial_blocks(struct inode *inode, loff_t lstart,
+				    loff_t length, bool *did_zero);
 extern vm_fault_t ext4_page_mkwrite(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);
@@ -3721,7 +3719,7 @@ extern int ext4_handle_dirty_dirblock(handle_t *handle, struct inode *inode,
 extern int __ext4_unlink(struct inode *dir, const struct qstr *d_name,
 			 struct inode *inode, struct dentry *dentry);
 extern int __ext4_link(struct inode *dir, struct inode *inode,
-		       struct dentry *dentry);
+		       const struct qstr *d_name, struct dentry *dentry);
 
 #define S_SHIFT 12
 static const unsigned char ext4_type_by_mode[(S_IFMT >> S_SHIFT) + 1] = {

fs/ext4/extents-test.c

@@ -142,10 +142,14 @@ static struct file_system_type ext_fs_type = {
 
 static void extents_kunit_exit(struct kunit *test)
 {
-	struct super_block *sb = k_ctx.k_ei->vfs_inode.i_sb;
-	struct ext4_sb_info *sbi = sb->s_fs_info;
+	struct ext4_sb_info *sbi;
 
+	if (!k_ctx.k_ei)
+		return;
+
+	sbi = k_ctx.k_ei->vfs_inode.i_sb->s_fs_info;
 	ext4_es_unregister_shrinker(sbi);
+	deactivate_super(sbi->s_sb);
 	kfree(sbi);
 	kfree(k_ctx.k_ei);
 	kfree(k_ctx.k_data);
@@ -224,34 +228,38 @@ static int extents_kunit_init(struct kunit *test)
 		(struct kunit_ext_test_param *)(test->param_value);
 	int err;
 
-	sb = sget(&ext_fs_type, NULL, ext_set, 0, NULL);
-	if (IS_ERR(sb))
-		return PTR_ERR(sb);
-
-	sb->s_blocksize = 4096;
-	sb->s_blocksize_bits = 12;
-
 	sbi = kzalloc_obj(struct ext4_sb_info);
 	if (sbi == NULL)
 		return -ENOMEM;
 
+	sb = sget(&ext_fs_type, NULL, ext_set, 0, NULL);
+	if (IS_ERR(sb)) {
+		kfree(sbi);
+		return PTR_ERR(sb);
+	}
+
 	sbi->s_sb = sb;
 	sb->s_fs_info = sbi;
 
+	sb->s_blocksize = 4096;
+	sb->s_blocksize_bits = 12;
+
 	if (!param || !param->disable_zeroout)
 		sbi->s_extent_max_zeroout_kb = 32;
 
+	err = ext4_es_register_shrinker(sbi);
+	if (err)
+		goto out_deactivate;
+
 	/* setup the mock inode */
 	k_ctx.k_ei = kzalloc_obj(struct ext4_inode_info);
-	if (k_ctx.k_ei == NULL)
-		return -ENOMEM;
+	if (k_ctx.k_ei == NULL) {
+		err = -ENOMEM;
+		goto out;
+	}
 	ei = k_ctx.k_ei;
 	inode = &ei->vfs_inode;
 
-	err = ext4_es_register_shrinker(sbi);
-	if (err)
-		return err;
-
 	ext4_es_init_tree(&ei->i_es_tree);
 	rwlock_init(&ei->i_es_lock);
 	INIT_LIST_HEAD(&ei->i_es_list);
@@ -266,8 +274,10 @@ static int extents_kunit_init(struct kunit *test)
 	inode->i_sb = sb;
 
 	k_ctx.k_data = kzalloc(EXT_DATA_LEN * 4096, GFP_KERNEL);
-	if (k_ctx.k_data == NULL)
-		return -ENOMEM;
+	if (k_ctx.k_data == NULL) {
+		err = -ENOMEM;
+		goto out;
+	}
 
 	/*
 	 * set the data area to a junk value
@@ -309,7 +319,23 @@ static int extents_kunit_init(struct kunit *test)
 	kunit_activate_static_stub(test, ext4_ext_zeroout, ext4_ext_zeroout_stub);
 	kunit_activate_static_stub(test, ext4_issue_zeroout,
 				   ext4_issue_zeroout_stub);
+	up_write(&sb->s_umount);
+
 	return 0;
+
+out:
+	kfree(k_ctx.k_ei);
+	k_ctx.k_ei = NULL;
+
+	kfree(k_ctx.k_data);
+	k_ctx.k_data = NULL;
+
+	ext4_es_unregister_shrinker(sbi);
+out_deactivate:
+	deactivate_locked_super(sb);
+	kfree(sbi);
+
+	return err;
 }
 
 /*