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ext4: cleanup the dax handling in ext4_fill_super
Only call fs_dax_get_by_bdev once the sbi has been allocated and remove the need for the dax_dev local variable. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Link: https://lore.kernel.org/r/20211129102203.2243509-21-hch@lst.de Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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cea845cdef
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89b93a7b15
1 changed files with 3 additions and 4 deletions
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@ -3878,7 +3878,6 @@ static void ext4_setup_csum_trigger(struct super_block *sb,
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static int ext4_fill_super(struct super_block *sb, void *data, int silent)
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{
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struct dax_device *dax_dev = fs_dax_get_by_bdev(sb->s_bdev);
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char *orig_data = kstrdup(data, GFP_KERNEL);
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struct buffer_head *bh, **group_desc;
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struct ext4_super_block *es = NULL;
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@ -3909,12 +3908,12 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
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if ((data && !orig_data) || !sbi)
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goto out_free_base;
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sbi->s_daxdev = dax_dev;
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sbi->s_blockgroup_lock =
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kzalloc(sizeof(struct blockgroup_lock), GFP_KERNEL);
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if (!sbi->s_blockgroup_lock)
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goto out_free_base;
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sbi->s_daxdev = fs_dax_get_by_bdev(sb->s_bdev);
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sb->s_fs_info = sbi;
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sbi->s_sb = sb;
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sbi->s_inode_readahead_blks = EXT4_DEF_INODE_READAHEAD_BLKS;
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@ -4299,7 +4298,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
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goto failed_mount;
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}
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if (dax_dev) {
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if (sbi->s_daxdev) {
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if (blocksize == PAGE_SIZE)
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set_bit(EXT4_FLAGS_BDEV_IS_DAX, &sbi->s_ext4_flags);
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else
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@ -5095,10 +5094,10 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
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out_fail:
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sb->s_fs_info = NULL;
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kfree(sbi->s_blockgroup_lock);
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fs_put_dax(sbi->s_daxdev);
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out_free_base:
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kfree(sbi);
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kfree(orig_data);
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fs_put_dax(dax_dev);
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return err ? err : ret;
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}
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