diff mbox series

[v2,21/34] ext4: port block device access to file

Message ID 20240123-vfs-bdev-file-v2-21-adbd023e19cc@kernel.org (mailing list archive)
State New
Headers show
Series Open block devices as files | expand

Commit Message

Christian Brauner Jan. 23, 2024, 1:26 p.m. UTC 
Signed-off-by: Christian Brauner <brauner@kernel.org>
---
 fs/ext4/ext4.h  |  2 +-
 fs/ext4/fsmap.c |  8 ++++----
 fs/ext4/super.c | 52 ++++++++++++++++++++++++++--------------------------
 3 files changed, 31 insertions(+), 31 deletions(-)

Comments

Jan Kara Feb. 1, 2024, 10:18 a.m. UTC | #1 
On Tue 23-01-24 14:26:38, Christian Brauner wrote:
> Signed-off-by: Christian Brauner <brauner@kernel.org>

Looks good. Feel free to add:

Reviewed-by: Jan Kara <jack@suse.cz>

								Honza

> ---
>  fs/ext4/ext4.h  |  2 +-
>  fs/ext4/fsmap.c |  8 ++++----
>  fs/ext4/super.c | 52 ++++++++++++++++++++++++++--------------------------
>  3 files changed, 31 insertions(+), 31 deletions(-)
> 
> diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
> index a5d784872303..dcdad5da419e 100644
> --- a/fs/ext4/ext4.h
> +++ b/fs/ext4/ext4.h
> @@ -1548,7 +1548,7 @@ struct ext4_sb_info {
>  	unsigned long s_commit_interval;
>  	u32 s_max_batch_time;
>  	u32 s_min_batch_time;
> -	struct bdev_handle *s_journal_bdev_handle;
> +	struct file *s_journal_bdev_file;
>  #ifdef CONFIG_QUOTA
>  	/* Names of quota files with journalled quota */
>  	char __rcu *s_qf_names[EXT4_MAXQUOTAS];
> diff --git a/fs/ext4/fsmap.c b/fs/ext4/fsmap.c
> index 11e6f33677a2..df853c4d3a8c 100644
> --- a/fs/ext4/fsmap.c
> +++ b/fs/ext4/fsmap.c
> @@ -576,9 +576,9 @@ static bool ext4_getfsmap_is_valid_device(struct super_block *sb,
>  	if (fm->fmr_device == 0 || fm->fmr_device == UINT_MAX ||
>  	    fm->fmr_device == new_encode_dev(sb->s_bdev->bd_dev))
>  		return true;
> -	if (EXT4_SB(sb)->s_journal_bdev_handle &&
> +	if (EXT4_SB(sb)->s_journal_bdev_file &&
>  	    fm->fmr_device ==
> -	    new_encode_dev(EXT4_SB(sb)->s_journal_bdev_handle->bdev->bd_dev))
> +	    new_encode_dev(file_bdev(EXT4_SB(sb)->s_journal_bdev_file)->bd_dev))
>  		return true;
>  	return false;
>  }
> @@ -648,9 +648,9 @@ int ext4_getfsmap(struct super_block *sb, struct ext4_fsmap_head *head,
>  	memset(handlers, 0, sizeof(handlers));
>  	handlers[0].gfd_dev = new_encode_dev(sb->s_bdev->bd_dev);
>  	handlers[0].gfd_fn = ext4_getfsmap_datadev;
> -	if (EXT4_SB(sb)->s_journal_bdev_handle) {
> +	if (EXT4_SB(sb)->s_journal_bdev_file) {
>  		handlers[1].gfd_dev = new_encode_dev(
> -			EXT4_SB(sb)->s_journal_bdev_handle->bdev->bd_dev);
> +			file_bdev(EXT4_SB(sb)->s_journal_bdev_file)->bd_dev);
>  		handlers[1].gfd_fn = ext4_getfsmap_logdev;
>  	}
>  
> diff --git a/fs/ext4/super.c b/fs/ext4/super.c
> index dcba0f85dfe2..aa007710cfc3 100644
> --- a/fs/ext4/super.c
> +++ b/fs/ext4/super.c
> @@ -1359,14 +1359,14 @@ static void ext4_put_super(struct super_block *sb)
>  
>  	sync_blockdev(sb->s_bdev);
>  	invalidate_bdev(sb->s_bdev);
> -	if (sbi->s_journal_bdev_handle) {
> +	if (sbi->s_journal_bdev_file) {
>  		/*
>  		 * Invalidate the journal device's buffers.  We don't want them
>  		 * floating about in memory - the physical journal device may
>  		 * hotswapped, and it breaks the `ro-after' testing code.
>  		 */
> -		sync_blockdev(sbi->s_journal_bdev_handle->bdev);
> -		invalidate_bdev(sbi->s_journal_bdev_handle->bdev);
> +		sync_blockdev(file_bdev(sbi->s_journal_bdev_file));
> +		invalidate_bdev(file_bdev(sbi->s_journal_bdev_file));
>  	}
>  
>  	ext4_xattr_destroy_cache(sbi->s_ea_inode_cache);
> @@ -4233,7 +4233,7 @@ int ext4_calculate_overhead(struct super_block *sb)
>  	 * Add the internal journal blocks whether the journal has been
>  	 * loaded or not
>  	 */
> -	if (sbi->s_journal && !sbi->s_journal_bdev_handle)
> +	if (sbi->s_journal && !sbi->s_journal_bdev_file)
>  		overhead += EXT4_NUM_B2C(sbi, sbi->s_journal->j_total_len);
>  	else if (ext4_has_feature_journal(sb) && !sbi->s_journal && j_inum) {
>  		/* j_inum for internal journal is non-zero */
> @@ -5670,9 +5670,9 @@ failed_mount9: __maybe_unused
>  #endif
>  	fscrypt_free_dummy_policy(&sbi->s_dummy_enc_policy);
>  	brelse(sbi->s_sbh);
> -	if (sbi->s_journal_bdev_handle) {
> -		invalidate_bdev(sbi->s_journal_bdev_handle->bdev);
> -		bdev_release(sbi->s_journal_bdev_handle);
> +	if (sbi->s_journal_bdev_file) {
> +		invalidate_bdev(file_bdev(sbi->s_journal_bdev_file));
> +		fput(sbi->s_journal_bdev_file);
>  	}
>  out_fail:
>  	invalidate_bdev(sb->s_bdev);
> @@ -5842,30 +5842,30 @@ static journal_t *ext4_open_inode_journal(struct super_block *sb,
>  	return journal;
>  }
>  
> -static struct bdev_handle *ext4_get_journal_blkdev(struct super_block *sb,
> +static struct file *ext4_get_journal_blkdev(struct super_block *sb,
>  					dev_t j_dev, ext4_fsblk_t *j_start,
>  					ext4_fsblk_t *j_len)
>  {
>  	struct buffer_head *bh;
>  	struct block_device *bdev;
> -	struct bdev_handle *bdev_handle;
> +	struct file *bdev_file;
>  	int hblock, blocksize;
>  	ext4_fsblk_t sb_block;
>  	unsigned long offset;
>  	struct ext4_super_block *es;
>  	int errno;
>  
> -	bdev_handle = bdev_open_by_dev(j_dev,
> +	bdev_file = bdev_file_open_by_dev(j_dev,
>  		BLK_OPEN_READ | BLK_OPEN_WRITE | BLK_OPEN_RESTRICT_WRITES,
>  		sb, &fs_holder_ops);
> -	if (IS_ERR(bdev_handle)) {
> +	if (IS_ERR(bdev_file)) {
>  		ext4_msg(sb, KERN_ERR,
>  			 "failed to open journal device unknown-block(%u,%u) %ld",
> -			 MAJOR(j_dev), MINOR(j_dev), PTR_ERR(bdev_handle));
> -		return bdev_handle;
> +			 MAJOR(j_dev), MINOR(j_dev), PTR_ERR(bdev_file));
> +		return bdev_file;
>  	}
>  
> -	bdev = bdev_handle->bdev;
> +	bdev = file_bdev(bdev_file);
>  	blocksize = sb->s_blocksize;
>  	hblock = bdev_logical_block_size(bdev);
>  	if (blocksize < hblock) {
> @@ -5912,12 +5912,12 @@ static struct bdev_handle *ext4_get_journal_blkdev(struct super_block *sb,
>  	*j_start = sb_block + 1;
>  	*j_len = ext4_blocks_count(es);
>  	brelse(bh);
> -	return bdev_handle;
> +	return bdev_file;
>  
>  out_bh:
>  	brelse(bh);
>  out_bdev:
> -	bdev_release(bdev_handle);
> +	fput(bdev_file);
>  	return ERR_PTR(errno);
>  }
>  
> @@ -5927,14 +5927,14 @@ static journal_t *ext4_open_dev_journal(struct super_block *sb,
>  	journal_t *journal;
>  	ext4_fsblk_t j_start;
>  	ext4_fsblk_t j_len;
> -	struct bdev_handle *bdev_handle;
> +	struct file *bdev_file;
>  	int errno = 0;
>  
> -	bdev_handle = ext4_get_journal_blkdev(sb, j_dev, &j_start, &j_len);
> -	if (IS_ERR(bdev_handle))
> -		return ERR_CAST(bdev_handle);
> +	bdev_file = ext4_get_journal_blkdev(sb, j_dev, &j_start, &j_len);
> +	if (IS_ERR(bdev_file))
> +		return ERR_CAST(bdev_file);
>  
> -	journal = jbd2_journal_init_dev(bdev_handle->bdev, sb->s_bdev, j_start,
> +	journal = jbd2_journal_init_dev(file_bdev(bdev_file), sb->s_bdev, j_start,
>  					j_len, sb->s_blocksize);
>  	if (IS_ERR(journal)) {
>  		ext4_msg(sb, KERN_ERR, "failed to create device journal");
> @@ -5949,14 +5949,14 @@ static journal_t *ext4_open_dev_journal(struct super_block *sb,
>  		goto out_journal;
>  	}
>  	journal->j_private = sb;
> -	EXT4_SB(sb)->s_journal_bdev_handle = bdev_handle;
> +	EXT4_SB(sb)->s_journal_bdev_file = bdev_file;
>  	ext4_init_journal_params(sb, journal);
>  	return journal;
>  
>  out_journal:
>  	jbd2_journal_destroy(journal);
>  out_bdev:
> -	bdev_release(bdev_handle);
> +	fput(bdev_file);
>  	return ERR_PTR(errno);
>  }
>  
> @@ -7314,12 +7314,12 @@ static inline int ext3_feature_set_ok(struct super_block *sb)
>  static void ext4_kill_sb(struct super_block *sb)
>  {
>  	struct ext4_sb_info *sbi = EXT4_SB(sb);
> -	struct bdev_handle *handle = sbi ? sbi->s_journal_bdev_handle : NULL;
> +	struct file *bdev_file = sbi ? sbi->s_journal_bdev_file : NULL;
>  
>  	kill_block_super(sb);
>  
> -	if (handle)
> -		bdev_release(handle);
> +	if (bdev_file)
> +		fput(bdev_file);
>  }
>  
>  static struct file_system_type ext4_fs_type = {
> 
> -- 
> 2.43.0
>
diff mbox series

Patch

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index a5d784872303..dcdad5da419e 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1548,7 +1548,7 @@  struct ext4_sb_info {
 	unsigned long s_commit_interval;
 	u32 s_max_batch_time;
 	u32 s_min_batch_time;
-	struct bdev_handle *s_journal_bdev_handle;
+	struct file *s_journal_bdev_file;
 #ifdef CONFIG_QUOTA
 	/* Names of quota files with journalled quota */
 	char __rcu *s_qf_names[EXT4_MAXQUOTAS];
diff --git a/fs/ext4/fsmap.c b/fs/ext4/fsmap.c
index 11e6f33677a2..df853c4d3a8c 100644
--- a/fs/ext4/fsmap.c
+++ b/fs/ext4/fsmap.c
@@ -576,9 +576,9 @@  static bool ext4_getfsmap_is_valid_device(struct super_block *sb,
 	if (fm->fmr_device == 0 || fm->fmr_device == UINT_MAX ||
 	    fm->fmr_device == new_encode_dev(sb->s_bdev->bd_dev))
 		return true;
-	if (EXT4_SB(sb)->s_journal_bdev_handle &&
+	if (EXT4_SB(sb)->s_journal_bdev_file &&
 	    fm->fmr_device ==
-	    new_encode_dev(EXT4_SB(sb)->s_journal_bdev_handle->bdev->bd_dev))
+	    new_encode_dev(file_bdev(EXT4_SB(sb)->s_journal_bdev_file)->bd_dev))
 		return true;
 	return false;
 }
@@ -648,9 +648,9 @@  int ext4_getfsmap(struct super_block *sb, struct ext4_fsmap_head *head,
 	memset(handlers, 0, sizeof(handlers));
 	handlers[0].gfd_dev = new_encode_dev(sb->s_bdev->bd_dev);
 	handlers[0].gfd_fn = ext4_getfsmap_datadev;
-	if (EXT4_SB(sb)->s_journal_bdev_handle) {
+	if (EXT4_SB(sb)->s_journal_bdev_file) {
 		handlers[1].gfd_dev = new_encode_dev(
-			EXT4_SB(sb)->s_journal_bdev_handle->bdev->bd_dev);
+			file_bdev(EXT4_SB(sb)->s_journal_bdev_file)->bd_dev);
 		handlers[1].gfd_fn = ext4_getfsmap_logdev;
 	}
 
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index dcba0f85dfe2..aa007710cfc3 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1359,14 +1359,14 @@  static void ext4_put_super(struct super_block *sb)
 
 	sync_blockdev(sb->s_bdev);
 	invalidate_bdev(sb->s_bdev);
-	if (sbi->s_journal_bdev_handle) {
+	if (sbi->s_journal_bdev_file) {
 		/*
 		 * Invalidate the journal device's buffers.  We don't want them
 		 * floating about in memory - the physical journal device may
 		 * hotswapped, and it breaks the `ro-after' testing code.
 		 */
-		sync_blockdev(sbi->s_journal_bdev_handle->bdev);
-		invalidate_bdev(sbi->s_journal_bdev_handle->bdev);
+		sync_blockdev(file_bdev(sbi->s_journal_bdev_file));
+		invalidate_bdev(file_bdev(sbi->s_journal_bdev_file));
 	}
 
 	ext4_xattr_destroy_cache(sbi->s_ea_inode_cache);
@@ -4233,7 +4233,7 @@  int ext4_calculate_overhead(struct super_block *sb)
 	 * Add the internal journal blocks whether the journal has been
 	 * loaded or not
 	 */
-	if (sbi->s_journal && !sbi->s_journal_bdev_handle)
+	if (sbi->s_journal && !sbi->s_journal_bdev_file)
 		overhead += EXT4_NUM_B2C(sbi, sbi->s_journal->j_total_len);
 	else if (ext4_has_feature_journal(sb) && !sbi->s_journal && j_inum) {
 		/* j_inum for internal journal is non-zero */
@@ -5670,9 +5670,9 @@  failed_mount9: __maybe_unused
 #endif
 	fscrypt_free_dummy_policy(&sbi->s_dummy_enc_policy);
 	brelse(sbi->s_sbh);
-	if (sbi->s_journal_bdev_handle) {
-		invalidate_bdev(sbi->s_journal_bdev_handle->bdev);
-		bdev_release(sbi->s_journal_bdev_handle);
+	if (sbi->s_journal_bdev_file) {
+		invalidate_bdev(file_bdev(sbi->s_journal_bdev_file));
+		fput(sbi->s_journal_bdev_file);
 	}
 out_fail:
 	invalidate_bdev(sb->s_bdev);
@@ -5842,30 +5842,30 @@  static journal_t *ext4_open_inode_journal(struct super_block *sb,
 	return journal;
 }
 
-static struct bdev_handle *ext4_get_journal_blkdev(struct super_block *sb,
+static struct file *ext4_get_journal_blkdev(struct super_block *sb,
 					dev_t j_dev, ext4_fsblk_t *j_start,
 					ext4_fsblk_t *j_len)
 {
 	struct buffer_head *bh;
 	struct block_device *bdev;
-	struct bdev_handle *bdev_handle;
+	struct file *bdev_file;
 	int hblock, blocksize;
 	ext4_fsblk_t sb_block;
 	unsigned long offset;
 	struct ext4_super_block *es;
 	int errno;
 
-	bdev_handle = bdev_open_by_dev(j_dev,
+	bdev_file = bdev_file_open_by_dev(j_dev,
 		BLK_OPEN_READ | BLK_OPEN_WRITE | BLK_OPEN_RESTRICT_WRITES,
 		sb, &fs_holder_ops);
-	if (IS_ERR(bdev_handle)) {
+	if (IS_ERR(bdev_file)) {
 		ext4_msg(sb, KERN_ERR,
 			 "failed to open journal device unknown-block(%u,%u) %ld",
-			 MAJOR(j_dev), MINOR(j_dev), PTR_ERR(bdev_handle));
-		return bdev_handle;
+			 MAJOR(j_dev), MINOR(j_dev), PTR_ERR(bdev_file));
+		return bdev_file;
 	}
 
-	bdev = bdev_handle->bdev;
+	bdev = file_bdev(bdev_file);
 	blocksize = sb->s_blocksize;
 	hblock = bdev_logical_block_size(bdev);
 	if (blocksize < hblock) {
@@ -5912,12 +5912,12 @@  static struct bdev_handle *ext4_get_journal_blkdev(struct super_block *sb,
 	*j_start = sb_block + 1;
 	*j_len = ext4_blocks_count(es);
 	brelse(bh);
-	return bdev_handle;
+	return bdev_file;
 
 out_bh:
 	brelse(bh);
 out_bdev:
-	bdev_release(bdev_handle);
+	fput(bdev_file);
 	return ERR_PTR(errno);
 }
 
@@ -5927,14 +5927,14 @@  static journal_t *ext4_open_dev_journal(struct super_block *sb,
 	journal_t *journal;
 	ext4_fsblk_t j_start;
 	ext4_fsblk_t j_len;
-	struct bdev_handle *bdev_handle;
+	struct file *bdev_file;
 	int errno = 0;
 
-	bdev_handle = ext4_get_journal_blkdev(sb, j_dev, &j_start, &j_len);
-	if (IS_ERR(bdev_handle))
-		return ERR_CAST(bdev_handle);
+	bdev_file = ext4_get_journal_blkdev(sb, j_dev, &j_start, &j_len);
+	if (IS_ERR(bdev_file))
+		return ERR_CAST(bdev_file);
 
-	journal = jbd2_journal_init_dev(bdev_handle->bdev, sb->s_bdev, j_start,
+	journal = jbd2_journal_init_dev(file_bdev(bdev_file), sb->s_bdev, j_start,
 					j_len, sb->s_blocksize);
 	if (IS_ERR(journal)) {
 		ext4_msg(sb, KERN_ERR, "failed to create device journal");
@@ -5949,14 +5949,14 @@  static journal_t *ext4_open_dev_journal(struct super_block *sb,
 		goto out_journal;
 	}
 	journal->j_private = sb;
-	EXT4_SB(sb)->s_journal_bdev_handle = bdev_handle;
+	EXT4_SB(sb)->s_journal_bdev_file = bdev_file;
 	ext4_init_journal_params(sb, journal);
 	return journal;
 
 out_journal:
 	jbd2_journal_destroy(journal);
 out_bdev:
-	bdev_release(bdev_handle);
+	fput(bdev_file);
 	return ERR_PTR(errno);
 }
 
@@ -7314,12 +7314,12 @@  static inline int ext3_feature_set_ok(struct super_block *sb)
 static void ext4_kill_sb(struct super_block *sb)
 {
 	struct ext4_sb_info *sbi = EXT4_SB(sb);
-	struct bdev_handle *handle = sbi ? sbi->s_journal_bdev_handle : NULL;
+	struct file *bdev_file = sbi ? sbi->s_journal_bdev_file : NULL;
 
 	kill_block_super(sb);
 
-	if (handle)
-		bdev_release(handle);
+	if (bdev_file)
+		fput(bdev_file);
 }
 
 static struct file_system_type ext4_fs_type = {