[v5,8/9] f2fs: add inline encryption support
diff mbox series

Message ID 20191028072032.6911-9-satyat@google.com
State New
Headers show
Series
  • Inline Encryption Support
Related show

Commit Message

Satya Tangirala Oct. 28, 2019, 7:20 a.m. UTC
Wire up f2fs to support inline encryption via the helper functions which
fs/crypto/ now provides.  This includes:

- Adding a mount option 'inlinecrypt' which enables inline encryption
  on encrypted files where it can be used.

- Setting the bio_crypt_ctx on bios that will be submitted to an
  inline-encrypted file.

- Not adding logically discontiguous data to bios that will be submitted
  to an inline-encrypted file.

- Not doing filesystem-layer crypto on inline-encrypted files.

Co-developed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Satya Tangirala <satyat@google.com>
---
 fs/f2fs/data.c  | 76 +++++++++++++++++++++++++++++++++++++++++++------
 fs/f2fs/f2fs.h  |  3 ++
 fs/f2fs/super.c | 20 +++++++++++++
 3 files changed, 91 insertions(+), 8 deletions(-)

Comments

Jaegeuk Kim Oct. 31, 2019, 5:14 p.m. UTC | #1
On 10/28, Satya Tangirala wrote:
> Wire up f2fs to support inline encryption via the helper functions which
> fs/crypto/ now provides.  This includes:
> 
> - Adding a mount option 'inlinecrypt' which enables inline encryption
>   on encrypted files where it can be used.
> 
> - Setting the bio_crypt_ctx on bios that will be submitted to an
>   inline-encrypted file.
> 
> - Not adding logically discontiguous data to bios that will be submitted
>   to an inline-encrypted file.
> 
> - Not doing filesystem-layer crypto on inline-encrypted files.
> 
> Co-developed-by: Eric Biggers <ebiggers@google.com>
> Signed-off-by: Eric Biggers <ebiggers@google.com>
> Signed-off-by: Satya Tangirala <satyat@google.com>

Acked-by: Jaegeuk Kim <jaegeuk@google.com>

> ---
>  fs/f2fs/data.c  | 76 +++++++++++++++++++++++++++++++++++++++++++------
>  fs/f2fs/f2fs.h  |  3 ++
>  fs/f2fs/super.c | 20 +++++++++++++
>  3 files changed, 91 insertions(+), 8 deletions(-)
> 
> diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
> index 5755e897a5f0..b5a7b540e630 100644
> --- a/fs/f2fs/data.c
> +++ b/fs/f2fs/data.c
> @@ -306,6 +306,35 @@ static struct bio *__bio_alloc(struct f2fs_io_info *fio, int npages)
>  	return bio;
>  }
>  
> +static int f2fs_set_bio_crypt_ctx(struct bio *bio, const struct inode *inode,
> +				  pgoff_t first_idx,
> +				  const struct f2fs_io_info *fio,
> +				  gfp_t gfp_mask)
> +{
> +	/*
> +	 * The f2fs garbage collector sets ->encrypted_page when it wants to
> +	 * read/write raw data without encryption.
> +	 */
> +	if (fio && fio->encrypted_page)
> +		return 0;
> +
> +	return fscrypt_set_bio_crypt_ctx(bio, inode, first_idx, gfp_mask);
> +}
> +
> +static bool f2fs_crypt_mergeable_bio(struct bio *bio, const struct inode *inode,
> +				     pgoff_t next_idx,
> +				     const struct f2fs_io_info *fio)
> +{
> +	/*
> +	 * The f2fs garbage collector sets ->encrypted_page when it wants to
> +	 * read/write raw data without encryption.
> +	 */
> +	if (fio && fio->encrypted_page)
> +		return true;
> +
> +	return fscrypt_mergeable_bio(bio, inode, next_idx);
> +}
> +
>  static inline void __submit_bio(struct f2fs_sb_info *sbi,
>  				struct bio *bio, enum page_type type)
>  {
> @@ -477,6 +506,7 @@ int f2fs_submit_page_bio(struct f2fs_io_info *fio)
>  	struct bio *bio;
>  	struct page *page = fio->encrypted_page ?
>  			fio->encrypted_page : fio->page;
> +	int err;
>  
>  	if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr,
>  			fio->is_por ? META_POR : (__is_meta_io(fio) ?
> @@ -489,6 +519,13 @@ int f2fs_submit_page_bio(struct f2fs_io_info *fio)
>  	/* Allocate a new bio */
>  	bio = __bio_alloc(fio, 1);
>  
> +	err = f2fs_set_bio_crypt_ctx(bio, fio->page->mapping->host,
> +				     fio->page->index, fio, GFP_NOIO);
> +	if (err) {
> +		bio_put(bio);
> +		return err;
> +	}
> +
>  	if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) {
>  		bio_put(bio);
>  		return -EFAULT;
> @@ -556,14 +593,19 @@ int f2fs_merge_page_bio(struct f2fs_io_info *fio)
>  	trace_f2fs_submit_page_bio(page, fio);
>  	f2fs_trace_ios(fio, 0);
>  
> -	if (bio && !page_is_mergeable(fio->sbi, bio, *fio->last_block,
> -						fio->new_blkaddr)) {
> +	if (bio && (!page_is_mergeable(fio->sbi, bio, *fio->last_block,
> +				       fio->new_blkaddr) ||
> +		    !f2fs_crypt_mergeable_bio(bio, fio->page->mapping->host,
> +					      fio->page->index, fio))) {
>  		__submit_bio(fio->sbi, bio, fio->type);
>  		bio = NULL;
>  	}
>  alloc_new:
>  	if (!bio) {
>  		bio = __bio_alloc(fio, BIO_MAX_PAGES);
> +		f2fs_set_bio_crypt_ctx(bio, fio->page->mapping->host,
> +				       fio->page->index, fio,
> +				       GFP_NOIO | __GFP_NOFAIL);
>  		bio_set_op_attrs(bio, fio->op, fio->op_flags);
>  	}
>  
> @@ -629,8 +671,11 @@ void f2fs_submit_page_write(struct f2fs_io_info *fio)
>  
>  	inc_page_count(sbi, WB_DATA_TYPE(bio_page));
>  
> -	if (io->bio && !io_is_mergeable(sbi, io->bio, io, fio,
> -			io->last_block_in_bio, fio->new_blkaddr))
> +	if (io->bio &&
> +	    (!io_is_mergeable(sbi, io->bio, io, fio, io->last_block_in_bio,
> +			      fio->new_blkaddr) ||
> +	     !f2fs_crypt_mergeable_bio(io->bio, fio->page->mapping->host,
> +				       fio->page->index, fio)))
>  		__submit_merged_bio(io);
>  alloc_new:
>  	if (io->bio == NULL) {
> @@ -642,6 +687,9 @@ void f2fs_submit_page_write(struct f2fs_io_info *fio)
>  			goto skip;
>  		}
>  		io->bio = __bio_alloc(fio, BIO_MAX_PAGES);
> +		f2fs_set_bio_crypt_ctx(io->bio, fio->page->mapping->host,
> +				       fio->page->index, fio,
> +				       GFP_NOIO | __GFP_NOFAIL);
>  		io->fio = *fio;
>  	}
>  
> @@ -681,15 +729,23 @@ static struct bio *f2fs_grab_read_bio(struct inode *inode, block_t blkaddr,
>  	struct bio *bio;
>  	struct bio_post_read_ctx *ctx;
>  	unsigned int post_read_steps = 0;
> +	int err;
>  
>  	bio = f2fs_bio_alloc(sbi, min_t(int, nr_pages, BIO_MAX_PAGES), false);
>  	if (!bio)
>  		return ERR_PTR(-ENOMEM);
> +
> +	err = f2fs_set_bio_crypt_ctx(bio, inode, first_idx, NULL, GFP_NOFS);
> +	if (err) {
> +		bio_put(bio);
> +		return ERR_PTR(err);
> +	}
> +
>  	f2fs_target_device(sbi, blkaddr, bio);
>  	bio->bi_end_io = f2fs_read_end_io;
>  	bio_set_op_attrs(bio, REQ_OP_READ, op_flag);
>  
> -	if (f2fs_encrypted_file(inode))
> +	if (fscrypt_inode_uses_fs_layer_crypto(inode))
>  		post_read_steps |= 1 << STEP_DECRYPT;
>  
>  	if (f2fs_need_verity(inode, first_idx))
> @@ -1726,8 +1782,9 @@ static int f2fs_read_single_page(struct inode *inode, struct page *page,
>  	 * This page will go to BIO.  Do we need to send this
>  	 * BIO off first?
>  	 */
> -	if (bio && !page_is_mergeable(F2FS_I_SB(inode), bio,
> -				*last_block_in_bio, block_nr)) {
> +	if (bio && (!page_is_mergeable(F2FS_I_SB(inode), bio,
> +				       *last_block_in_bio, block_nr) ||
> +		    !f2fs_crypt_mergeable_bio(bio, inode, page->index, NULL))) {
>  submit_and_realloc:
>  		__submit_bio(F2FS_I_SB(inode), bio, DATA);
>  		bio = NULL;
> @@ -1867,6 +1924,9 @@ static int encrypt_one_page(struct f2fs_io_info *fio)
>  	/* wait for GCed page writeback via META_MAPPING */
>  	f2fs_wait_on_block_writeback(inode, fio->old_blkaddr);
>  
> +	if (fscrypt_inode_uses_inline_crypto(inode))
> +		return 0;
> +
>  retry_encrypt:
>  	fio->encrypted_page = fscrypt_encrypt_pagecache_blocks(fio->page,
>  							       PAGE_SIZE, 0,
> @@ -2041,7 +2101,7 @@ int f2fs_do_write_data_page(struct f2fs_io_info *fio)
>  			f2fs_unlock_op(fio->sbi);
>  		err = f2fs_inplace_write_data(fio);
>  		if (err) {
> -			if (f2fs_encrypted_file(inode))
> +			if (fscrypt_inode_uses_fs_layer_crypto(inode))
>  				fscrypt_finalize_bounce_page(&fio->encrypted_page);
>  			if (PageWriteback(page))
>  				end_page_writeback(page);
> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> index 4024790028aa..e04fda00b4ef 100644
> --- a/fs/f2fs/f2fs.h
> +++ b/fs/f2fs/f2fs.h
> @@ -137,6 +137,9 @@ struct f2fs_mount_info {
>  	int alloc_mode;			/* segment allocation policy */
>  	int fsync_mode;			/* fsync policy */
>  	bool test_dummy_encryption;	/* test dummy encryption */
> +#ifdef CONFIG_FS_ENCRYPTION
> +	bool inlinecrypt;		/* inline encryption enabled */
> +#endif
>  	block_t unusable_cap;		/* Amount of space allowed to be
>  					 * unusable when disabling checkpoint
>  					 */
> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
> index 851ac9522926..850a2a2394d8 100644
> --- a/fs/f2fs/super.c
> +++ b/fs/f2fs/super.c
> @@ -137,6 +137,7 @@ enum {
>  	Opt_alloc,
>  	Opt_fsync,
>  	Opt_test_dummy_encryption,
> +	Opt_inlinecrypt,
>  	Opt_checkpoint_disable,
>  	Opt_checkpoint_disable_cap,
>  	Opt_checkpoint_disable_cap_perc,
> @@ -199,6 +200,7 @@ static match_table_t f2fs_tokens = {
>  	{Opt_alloc, "alloc_mode=%s"},
>  	{Opt_fsync, "fsync_mode=%s"},
>  	{Opt_test_dummy_encryption, "test_dummy_encryption"},
> +	{Opt_inlinecrypt, "inlinecrypt"},
>  	{Opt_checkpoint_disable, "checkpoint=disable"},
>  	{Opt_checkpoint_disable_cap, "checkpoint=disable:%u"},
>  	{Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"},
> @@ -783,6 +785,13 @@ static int parse_options(struct super_block *sb, char *options)
>  			f2fs_info(sbi, "Test dummy encryption mode enabled");
>  #else
>  			f2fs_info(sbi, "Test dummy encryption mount option ignored");
> +#endif
> +			break;
> +		case Opt_inlinecrypt:
> +#ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT
> +			F2FS_OPTION(sbi).inlinecrypt = true;
> +#else
> +			f2fs_info(sbi, "inline encryption not supported");
>  #endif
>  			break;
>  		case Opt_checkpoint_disable_cap_perc:
> @@ -1438,6 +1447,8 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
>  #ifdef CONFIG_FS_ENCRYPTION
>  	if (F2FS_OPTION(sbi).test_dummy_encryption)
>  		seq_puts(seq, ",test_dummy_encryption");
> +	if (F2FS_OPTION(sbi).inlinecrypt)
> +		seq_puts(seq, ",inlinecrypt");
>  #endif
>  
>  	if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
> @@ -1466,6 +1477,9 @@ static void default_options(struct f2fs_sb_info *sbi)
>  	F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
>  	F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
>  	F2FS_OPTION(sbi).test_dummy_encryption = false;
> +#ifdef CONFIG_FS_ENCRYPTION
> +	F2FS_OPTION(sbi).inlinecrypt = false;
> +#endif
>  	F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
>  	F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
>  
> @@ -2320,6 +2334,11 @@ static void f2fs_get_ino_and_lblk_bits(struct super_block *sb,
>  	*lblk_bits_ret = 8 * sizeof(block_t);
>  }
>  
> +static bool f2fs_inline_crypt_enabled(struct super_block *sb)
> +{
> +	return F2FS_OPTION(F2FS_SB(sb)).inlinecrypt;
> +}
> +
>  static const struct fscrypt_operations f2fs_cryptops = {
>  	.key_prefix		= "f2fs:",
>  	.get_context		= f2fs_get_context,
> @@ -2329,6 +2348,7 @@ static const struct fscrypt_operations f2fs_cryptops = {
>  	.max_namelen		= F2FS_NAME_LEN,
>  	.has_stable_inodes	= f2fs_has_stable_inodes,
>  	.get_ino_and_lblk_bits	= f2fs_get_ino_and_lblk_bits,
> +	.inline_crypt_enabled	= f2fs_inline_crypt_enabled,
>  };
>  #endif
>  
> -- 
> 2.24.0.rc0.303.g954a862665-goog

Patch
diff mbox series

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 5755e897a5f0..b5a7b540e630 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -306,6 +306,35 @@  static struct bio *__bio_alloc(struct f2fs_io_info *fio, int npages)
 	return bio;
 }
 
+static int f2fs_set_bio_crypt_ctx(struct bio *bio, const struct inode *inode,
+				  pgoff_t first_idx,
+				  const struct f2fs_io_info *fio,
+				  gfp_t gfp_mask)
+{
+	/*
+	 * The f2fs garbage collector sets ->encrypted_page when it wants to
+	 * read/write raw data without encryption.
+	 */
+	if (fio && fio->encrypted_page)
+		return 0;
+
+	return fscrypt_set_bio_crypt_ctx(bio, inode, first_idx, gfp_mask);
+}
+
+static bool f2fs_crypt_mergeable_bio(struct bio *bio, const struct inode *inode,
+				     pgoff_t next_idx,
+				     const struct f2fs_io_info *fio)
+{
+	/*
+	 * The f2fs garbage collector sets ->encrypted_page when it wants to
+	 * read/write raw data without encryption.
+	 */
+	if (fio && fio->encrypted_page)
+		return true;
+
+	return fscrypt_mergeable_bio(bio, inode, next_idx);
+}
+
 static inline void __submit_bio(struct f2fs_sb_info *sbi,
 				struct bio *bio, enum page_type type)
 {
@@ -477,6 +506,7 @@  int f2fs_submit_page_bio(struct f2fs_io_info *fio)
 	struct bio *bio;
 	struct page *page = fio->encrypted_page ?
 			fio->encrypted_page : fio->page;
+	int err;
 
 	if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr,
 			fio->is_por ? META_POR : (__is_meta_io(fio) ?
@@ -489,6 +519,13 @@  int f2fs_submit_page_bio(struct f2fs_io_info *fio)
 	/* Allocate a new bio */
 	bio = __bio_alloc(fio, 1);
 
+	err = f2fs_set_bio_crypt_ctx(bio, fio->page->mapping->host,
+				     fio->page->index, fio, GFP_NOIO);
+	if (err) {
+		bio_put(bio);
+		return err;
+	}
+
 	if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) {
 		bio_put(bio);
 		return -EFAULT;
@@ -556,14 +593,19 @@  int f2fs_merge_page_bio(struct f2fs_io_info *fio)
 	trace_f2fs_submit_page_bio(page, fio);
 	f2fs_trace_ios(fio, 0);
 
-	if (bio && !page_is_mergeable(fio->sbi, bio, *fio->last_block,
-						fio->new_blkaddr)) {
+	if (bio && (!page_is_mergeable(fio->sbi, bio, *fio->last_block,
+				       fio->new_blkaddr) ||
+		    !f2fs_crypt_mergeable_bio(bio, fio->page->mapping->host,
+					      fio->page->index, fio))) {
 		__submit_bio(fio->sbi, bio, fio->type);
 		bio = NULL;
 	}
 alloc_new:
 	if (!bio) {
 		bio = __bio_alloc(fio, BIO_MAX_PAGES);
+		f2fs_set_bio_crypt_ctx(bio, fio->page->mapping->host,
+				       fio->page->index, fio,
+				       GFP_NOIO | __GFP_NOFAIL);
 		bio_set_op_attrs(bio, fio->op, fio->op_flags);
 	}
 
@@ -629,8 +671,11 @@  void f2fs_submit_page_write(struct f2fs_io_info *fio)
 
 	inc_page_count(sbi, WB_DATA_TYPE(bio_page));
 
-	if (io->bio && !io_is_mergeable(sbi, io->bio, io, fio,
-			io->last_block_in_bio, fio->new_blkaddr))
+	if (io->bio &&
+	    (!io_is_mergeable(sbi, io->bio, io, fio, io->last_block_in_bio,
+			      fio->new_blkaddr) ||
+	     !f2fs_crypt_mergeable_bio(io->bio, fio->page->mapping->host,
+				       fio->page->index, fio)))
 		__submit_merged_bio(io);
 alloc_new:
 	if (io->bio == NULL) {
@@ -642,6 +687,9 @@  void f2fs_submit_page_write(struct f2fs_io_info *fio)
 			goto skip;
 		}
 		io->bio = __bio_alloc(fio, BIO_MAX_PAGES);
+		f2fs_set_bio_crypt_ctx(io->bio, fio->page->mapping->host,
+				       fio->page->index, fio,
+				       GFP_NOIO | __GFP_NOFAIL);
 		io->fio = *fio;
 	}
 
@@ -681,15 +729,23 @@  static struct bio *f2fs_grab_read_bio(struct inode *inode, block_t blkaddr,
 	struct bio *bio;
 	struct bio_post_read_ctx *ctx;
 	unsigned int post_read_steps = 0;
+	int err;
 
 	bio = f2fs_bio_alloc(sbi, min_t(int, nr_pages, BIO_MAX_PAGES), false);
 	if (!bio)
 		return ERR_PTR(-ENOMEM);
+
+	err = f2fs_set_bio_crypt_ctx(bio, inode, first_idx, NULL, GFP_NOFS);
+	if (err) {
+		bio_put(bio);
+		return ERR_PTR(err);
+	}
+
 	f2fs_target_device(sbi, blkaddr, bio);
 	bio->bi_end_io = f2fs_read_end_io;
 	bio_set_op_attrs(bio, REQ_OP_READ, op_flag);
 
-	if (f2fs_encrypted_file(inode))
+	if (fscrypt_inode_uses_fs_layer_crypto(inode))
 		post_read_steps |= 1 << STEP_DECRYPT;
 
 	if (f2fs_need_verity(inode, first_idx))
@@ -1726,8 +1782,9 @@  static int f2fs_read_single_page(struct inode *inode, struct page *page,
 	 * This page will go to BIO.  Do we need to send this
 	 * BIO off first?
 	 */
-	if (bio && !page_is_mergeable(F2FS_I_SB(inode), bio,
-				*last_block_in_bio, block_nr)) {
+	if (bio && (!page_is_mergeable(F2FS_I_SB(inode), bio,
+				       *last_block_in_bio, block_nr) ||
+		    !f2fs_crypt_mergeable_bio(bio, inode, page->index, NULL))) {
 submit_and_realloc:
 		__submit_bio(F2FS_I_SB(inode), bio, DATA);
 		bio = NULL;
@@ -1867,6 +1924,9 @@  static int encrypt_one_page(struct f2fs_io_info *fio)
 	/* wait for GCed page writeback via META_MAPPING */
 	f2fs_wait_on_block_writeback(inode, fio->old_blkaddr);
 
+	if (fscrypt_inode_uses_inline_crypto(inode))
+		return 0;
+
 retry_encrypt:
 	fio->encrypted_page = fscrypt_encrypt_pagecache_blocks(fio->page,
 							       PAGE_SIZE, 0,
@@ -2041,7 +2101,7 @@  int f2fs_do_write_data_page(struct f2fs_io_info *fio)
 			f2fs_unlock_op(fio->sbi);
 		err = f2fs_inplace_write_data(fio);
 		if (err) {
-			if (f2fs_encrypted_file(inode))
+			if (fscrypt_inode_uses_fs_layer_crypto(inode))
 				fscrypt_finalize_bounce_page(&fio->encrypted_page);
 			if (PageWriteback(page))
 				end_page_writeback(page);
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 4024790028aa..e04fda00b4ef 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -137,6 +137,9 @@  struct f2fs_mount_info {
 	int alloc_mode;			/* segment allocation policy */
 	int fsync_mode;			/* fsync policy */
 	bool test_dummy_encryption;	/* test dummy encryption */
+#ifdef CONFIG_FS_ENCRYPTION
+	bool inlinecrypt;		/* inline encryption enabled */
+#endif
 	block_t unusable_cap;		/* Amount of space allowed to be
 					 * unusable when disabling checkpoint
 					 */
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 851ac9522926..850a2a2394d8 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -137,6 +137,7 @@  enum {
 	Opt_alloc,
 	Opt_fsync,
 	Opt_test_dummy_encryption,
+	Opt_inlinecrypt,
 	Opt_checkpoint_disable,
 	Opt_checkpoint_disable_cap,
 	Opt_checkpoint_disable_cap_perc,
@@ -199,6 +200,7 @@  static match_table_t f2fs_tokens = {
 	{Opt_alloc, "alloc_mode=%s"},
 	{Opt_fsync, "fsync_mode=%s"},
 	{Opt_test_dummy_encryption, "test_dummy_encryption"},
+	{Opt_inlinecrypt, "inlinecrypt"},
 	{Opt_checkpoint_disable, "checkpoint=disable"},
 	{Opt_checkpoint_disable_cap, "checkpoint=disable:%u"},
 	{Opt_checkpoint_disable_cap_perc, "checkpoint=disable:%u%%"},
@@ -783,6 +785,13 @@  static int parse_options(struct super_block *sb, char *options)
 			f2fs_info(sbi, "Test dummy encryption mode enabled");
 #else
 			f2fs_info(sbi, "Test dummy encryption mount option ignored");
+#endif
+			break;
+		case Opt_inlinecrypt:
+#ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT
+			F2FS_OPTION(sbi).inlinecrypt = true;
+#else
+			f2fs_info(sbi, "inline encryption not supported");
 #endif
 			break;
 		case Opt_checkpoint_disable_cap_perc:
@@ -1438,6 +1447,8 @@  static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
 #ifdef CONFIG_FS_ENCRYPTION
 	if (F2FS_OPTION(sbi).test_dummy_encryption)
 		seq_puts(seq, ",test_dummy_encryption");
+	if (F2FS_OPTION(sbi).inlinecrypt)
+		seq_puts(seq, ",inlinecrypt");
 #endif
 
 	if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
@@ -1466,6 +1477,9 @@  static void default_options(struct f2fs_sb_info *sbi)
 	F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
 	F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
 	F2FS_OPTION(sbi).test_dummy_encryption = false;
+#ifdef CONFIG_FS_ENCRYPTION
+	F2FS_OPTION(sbi).inlinecrypt = false;
+#endif
 	F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
 	F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
 
@@ -2320,6 +2334,11 @@  static void f2fs_get_ino_and_lblk_bits(struct super_block *sb,
 	*lblk_bits_ret = 8 * sizeof(block_t);
 }
 
+static bool f2fs_inline_crypt_enabled(struct super_block *sb)
+{
+	return F2FS_OPTION(F2FS_SB(sb)).inlinecrypt;
+}
+
 static const struct fscrypt_operations f2fs_cryptops = {
 	.key_prefix		= "f2fs:",
 	.get_context		= f2fs_get_context,
@@ -2329,6 +2348,7 @@  static const struct fscrypt_operations f2fs_cryptops = {
 	.max_namelen		= F2FS_NAME_LEN,
 	.has_stable_inodes	= f2fs_has_stable_inodes,
 	.get_ino_and_lblk_bits	= f2fs_get_ino_and_lblk_bits,
+	.inline_crypt_enabled	= f2fs_inline_crypt_enabled,
 };
 #endif