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authorLinus Torvalds <torvalds@linux-foundation.org>2016-03-21 11:03:02 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-03-21 11:03:02 -0700
commitd407574e7948210223a7adca5ff26e3b0ec8143e (patch)
treebff52bae4075eb84818da7c6a2d4b23839eb6aa4 /include
parent5518f66b5a64b76fd602a7baf60590cd838a2ca0 (diff)
parent12bb0a8fd47e6020a7b52dc283a2d855f03d6ef5 (diff)
downloadlinux-d407574e7948210223a7adca5ff26e3b0ec8143e.tar.bz2
Merge tag 'for-f2fs-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs updates from Jaegeuk Kim: "New Features: - uplift filesystem encryption into fs/crypto/ - give sysfs entries to control memroy consumption Enhancements: - aio performance by preallocating blocks in ->write_iter - use writepages lock for only WB_SYNC_ALL - avoid redundant inline_data conversion - enhance forground GC - use wait_for_stable_page as possible - speed up SEEK_DATA and fiiemap Bug Fixes: - corner case in terms of -ENOSPC for inline_data - hung task caused by long latency in shrinker - corruption between atomic write and f2fs_trace_pid - avoid garbage lengths in dentries - revoke atomicly written pages if an error occurs In addition, there are various minor bug fixes and clean-ups" * tag 'for-f2fs-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (81 commits) f2fs: submit node page write bios when really required f2fs: add missing argument to f2fs_setxattr stub f2fs: fix to avoid unneeded unlock_new_inode f2fs: clean up opened code with f2fs_update_dentry f2fs: declare static functions f2fs: use cryptoapi crc32 functions f2fs: modify the readahead method in ra_node_page() f2fs crypto: sync ext4_lookup and ext4_file_open fs crypto: move per-file encryption from f2fs tree to fs/crypto f2fs: mutex can't be used by down_write_nest_lock() f2fs: recovery missing dot dentries in root directory f2fs: fix to avoid deadlock when merging inline data f2fs: introduce f2fs_flush_merged_bios for cleanup f2fs: introduce f2fs_update_data_blkaddr for cleanup f2fs crypto: fix incorrect positioning for GCing encrypted data page f2fs: fix incorrect upper bound when iterating inode mapping tree f2fs: avoid hungtask problem caused by losing wake_up f2fs: trace old block address for CoWed page f2fs: try to flush inode after merging inline data f2fs: show more info about superblock recovery ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/dcache.h2
-rw-r--r--include/linux/f2fs_fs.h34
-rw-r--r--include/linux/fs.h8
-rw-r--r--include/linux/fscrypto.h434
-rw-r--r--include/trace/events/f2fs.h12
-rw-r--r--include/uapi/linux/fs.h18
6 files changed, 495 insertions, 13 deletions
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 1c51d2d84a32..7cb043d8f4e8 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -228,6 +228,8 @@ struct dentry_operations {
#define DCACHE_FALLTHRU 0x01000000 /* Fall through to lower layer */
#define DCACHE_OP_SELECT_INODE 0x02000000 /* Unioned entry: dcache op selects inode */
+#define DCACHE_ENCRYPTED_WITH_KEY 0x04000000 /* dir is encrypted with a valid key */
+
extern seqlock_t rename_lock;
/*
diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
index e59c3be92106..9eb215a155e0 100644
--- a/include/linux/f2fs_fs.h
+++ b/include/linux/f2fs_fs.h
@@ -21,7 +21,7 @@
#define F2FS_BLKSIZE 4096 /* support only 4KB block */
#define F2FS_BLKSIZE_BITS 12 /* bits for F2FS_BLKSIZE */
#define F2FS_MAX_EXTENSION 64 /* # of extension entries */
-#define F2FS_BLK_ALIGN(x) (((x) + F2FS_BLKSIZE - 1) / F2FS_BLKSIZE)
+#define F2FS_BLK_ALIGN(x) (((x) + F2FS_BLKSIZE - 1) >> F2FS_BLKSIZE_BITS)
#define NULL_ADDR ((block_t)0) /* used as block_t addresses */
#define NEW_ADDR ((block_t)-1) /* used as block_t addresses */
@@ -170,12 +170,12 @@ struct f2fs_extent {
#define F2FS_INLINE_XATTR_ADDRS 50 /* 200 bytes for inline xattrs */
#define DEF_ADDRS_PER_INODE 923 /* Address Pointers in an Inode */
#define DEF_NIDS_PER_INODE 5 /* Node IDs in an Inode */
-#define ADDRS_PER_INODE(fi) addrs_per_inode(fi)
+#define ADDRS_PER_INODE(inode) addrs_per_inode(inode)
#define ADDRS_PER_BLOCK 1018 /* Address Pointers in a Direct Block */
#define NIDS_PER_BLOCK 1018 /* Node IDs in an Indirect Block */
-#define ADDRS_PER_PAGE(page, fi) \
- (IS_INODE(page) ? ADDRS_PER_INODE(fi) : ADDRS_PER_BLOCK)
+#define ADDRS_PER_PAGE(page, inode) \
+ (IS_INODE(page) ? ADDRS_PER_INODE(inode) : ADDRS_PER_BLOCK)
#define NODE_DIR1_BLOCK (DEF_ADDRS_PER_INODE + 1)
#define NODE_DIR2_BLOCK (DEF_ADDRS_PER_INODE + 2)
@@ -345,7 +345,7 @@ struct f2fs_summary {
struct summary_footer {
unsigned char entry_type; /* SUM_TYPE_XXX */
- __u32 check_sum; /* summary checksum */
+ __le32 check_sum; /* summary checksum */
} __packed;
#define SUM_JOURNAL_SIZE (F2FS_BLKSIZE - SUM_FOOTER_SIZE -\
@@ -358,6 +358,12 @@ struct summary_footer {
sizeof(struct sit_journal_entry))
#define SIT_JOURNAL_RESERVED ((SUM_JOURNAL_SIZE - 2) %\
sizeof(struct sit_journal_entry))
+
+/* Reserved area should make size of f2fs_extra_info equals to
+ * that of nat_journal and sit_journal.
+ */
+#define EXTRA_INFO_RESERVED (SUM_JOURNAL_SIZE - 2 - 8)
+
/*
* frequently updated NAT/SIT entries can be stored in the spare area in
* summary blocks
@@ -387,18 +393,28 @@ struct sit_journal {
__u8 reserved[SIT_JOURNAL_RESERVED];
} __packed;
-/* 4KB-sized summary block structure */
-struct f2fs_summary_block {
- struct f2fs_summary entries[ENTRIES_IN_SUM];
+struct f2fs_extra_info {
+ __le64 kbytes_written;
+ __u8 reserved[EXTRA_INFO_RESERVED];
+} __packed;
+
+struct f2fs_journal {
union {
__le16 n_nats;
__le16 n_sits;
};
- /* spare area is used by NAT or SIT journals */
+ /* spare area is used by NAT or SIT journals or extra info */
union {
struct nat_journal nat_j;
struct sit_journal sit_j;
+ struct f2fs_extra_info info;
};
+} __packed;
+
+/* 4KB-sized summary block structure */
+struct f2fs_summary_block {
+ struct f2fs_summary entries[ENTRIES_IN_SUM];
+ struct f2fs_journal journal;
struct summary_footer footer;
} __packed;
diff --git a/include/linux/fs.h b/include/linux/fs.h
index bb703ef728d1..cc08198358d4 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -53,6 +53,8 @@ struct swap_info_struct;
struct seq_file;
struct workqueue_struct;
struct iov_iter;
+struct fscrypt_info;
+struct fscrypt_operations;
extern void __init inode_init(void);
extern void __init inode_init_early(void);
@@ -679,6 +681,10 @@ struct inode {
struct hlist_head i_fsnotify_marks;
#endif
+#if IS_ENABLED(CONFIG_FS_ENCRYPTION)
+ struct fscrypt_info *i_crypt_info;
+#endif
+
void *i_private; /* fs or device private pointer */
};
@@ -1324,6 +1330,8 @@ struct super_block {
#endif
const struct xattr_handler **s_xattr;
+ const struct fscrypt_operations *s_cop;
+
struct hlist_bl_head s_anon; /* anonymous dentries for (nfs) exporting */
struct list_head s_mounts; /* list of mounts; _not_ for fs use */
struct block_device *s_bdev;
diff --git a/include/linux/fscrypto.h b/include/linux/fscrypto.h
new file mode 100644
index 000000000000..cd91f75de49b
--- /dev/null
+++ b/include/linux/fscrypto.h
@@ -0,0 +1,434 @@
+/*
+ * General per-file encryption definition
+ *
+ * Copyright (C) 2015, Google, Inc.
+ *
+ * Written by Michael Halcrow, 2015.
+ * Modified by Jaegeuk Kim, 2015.
+ */
+
+#ifndef _LINUX_FSCRYPTO_H
+#define _LINUX_FSCRYPTO_H
+
+#include <linux/key.h>
+#include <linux/fs.h>
+#include <linux/mm.h>
+#include <linux/bio.h>
+#include <linux/dcache.h>
+#include <crypto/skcipher.h>
+#include <uapi/linux/fs.h>
+
+#define FS_KEY_DERIVATION_NONCE_SIZE 16
+#define FS_ENCRYPTION_CONTEXT_FORMAT_V1 1
+
+#define FS_POLICY_FLAGS_PAD_4 0x00
+#define FS_POLICY_FLAGS_PAD_8 0x01
+#define FS_POLICY_FLAGS_PAD_16 0x02
+#define FS_POLICY_FLAGS_PAD_32 0x03
+#define FS_POLICY_FLAGS_PAD_MASK 0x03
+#define FS_POLICY_FLAGS_VALID 0x03
+
+/* Encryption algorithms */
+#define FS_ENCRYPTION_MODE_INVALID 0
+#define FS_ENCRYPTION_MODE_AES_256_XTS 1
+#define FS_ENCRYPTION_MODE_AES_256_GCM 2
+#define FS_ENCRYPTION_MODE_AES_256_CBC 3
+#define FS_ENCRYPTION_MODE_AES_256_CTS 4
+
+/**
+ * Encryption context for inode
+ *
+ * Protector format:
+ * 1 byte: Protector format (1 = this version)
+ * 1 byte: File contents encryption mode
+ * 1 byte: File names encryption mode
+ * 1 byte: Flags
+ * 8 bytes: Master Key descriptor
+ * 16 bytes: Encryption Key derivation nonce
+ */
+struct fscrypt_context {
+ u8 format;
+ u8 contents_encryption_mode;
+ u8 filenames_encryption_mode;
+ u8 flags;
+ u8 master_key_descriptor[FS_KEY_DESCRIPTOR_SIZE];
+ u8 nonce[FS_KEY_DERIVATION_NONCE_SIZE];
+} __packed;
+
+/* Encryption parameters */
+#define FS_XTS_TWEAK_SIZE 16
+#define FS_AES_128_ECB_KEY_SIZE 16
+#define FS_AES_256_GCM_KEY_SIZE 32
+#define FS_AES_256_CBC_KEY_SIZE 32
+#define FS_AES_256_CTS_KEY_SIZE 32
+#define FS_AES_256_XTS_KEY_SIZE 64
+#define FS_MAX_KEY_SIZE 64
+
+#define FS_KEY_DESC_PREFIX "fscrypt:"
+#define FS_KEY_DESC_PREFIX_SIZE 8
+
+/* This is passed in from userspace into the kernel keyring */
+struct fscrypt_key {
+ u32 mode;
+ u8 raw[FS_MAX_KEY_SIZE];
+ u32 size;
+} __packed;
+
+struct fscrypt_info {
+ u8 ci_data_mode;
+ u8 ci_filename_mode;
+ u8 ci_flags;
+ struct crypto_skcipher *ci_ctfm;
+ struct key *ci_keyring_key;
+ u8 ci_master_key[FS_KEY_DESCRIPTOR_SIZE];
+};
+
+#define FS_CTX_REQUIRES_FREE_ENCRYPT_FL 0x00000001
+#define FS_WRITE_PATH_FL 0x00000002
+
+struct fscrypt_ctx {
+ union {
+ struct {
+ struct page *bounce_page; /* Ciphertext page */
+ struct page *control_page; /* Original page */
+ } w;
+ struct {
+ struct bio *bio;
+ struct work_struct work;
+ } r;
+ struct list_head free_list; /* Free list */
+ };
+ u8 flags; /* Flags */
+ u8 mode; /* Encryption mode for tfm */
+};
+
+struct fscrypt_completion_result {
+ struct completion completion;
+ int res;
+};
+
+#define DECLARE_FS_COMPLETION_RESULT(ecr) \
+ struct fscrypt_completion_result ecr = { \
+ COMPLETION_INITIALIZER((ecr).completion), 0 }
+
+static inline int fscrypt_key_size(int mode)
+{
+ switch (mode) {
+ case FS_ENCRYPTION_MODE_AES_256_XTS:
+ return FS_AES_256_XTS_KEY_SIZE;
+ case FS_ENCRYPTION_MODE_AES_256_GCM:
+ return FS_AES_256_GCM_KEY_SIZE;
+ case FS_ENCRYPTION_MODE_AES_256_CBC:
+ return FS_AES_256_CBC_KEY_SIZE;
+ case FS_ENCRYPTION_MODE_AES_256_CTS:
+ return FS_AES_256_CTS_KEY_SIZE;
+ default:
+ BUG();
+ }
+ return 0;
+}
+
+#define FS_FNAME_NUM_SCATTER_ENTRIES 4
+#define FS_CRYPTO_BLOCK_SIZE 16
+#define FS_FNAME_CRYPTO_DIGEST_SIZE 32
+
+/**
+ * For encrypted symlinks, the ciphertext length is stored at the beginning
+ * of the string in little-endian format.
+ */
+struct fscrypt_symlink_data {
+ __le16 len;
+ char encrypted_path[1];
+} __packed;
+
+/**
+ * This function is used to calculate the disk space required to
+ * store a filename of length l in encrypted symlink format.
+ */
+static inline u32 fscrypt_symlink_data_len(u32 l)
+{
+ if (l < FS_CRYPTO_BLOCK_SIZE)
+ l = FS_CRYPTO_BLOCK_SIZE;
+ return (l + sizeof(struct fscrypt_symlink_data) - 1);
+}
+
+struct fscrypt_str {
+ unsigned char *name;
+ u32 len;
+};
+
+struct fscrypt_name {
+ const struct qstr *usr_fname;
+ struct fscrypt_str disk_name;
+ u32 hash;
+ u32 minor_hash;
+ struct fscrypt_str crypto_buf;
+};
+
+#define FSTR_INIT(n, l) { .name = n, .len = l }
+#define FSTR_TO_QSTR(f) QSTR_INIT((f)->name, (f)->len)
+#define fname_name(p) ((p)->disk_name.name)
+#define fname_len(p) ((p)->disk_name.len)
+
+/*
+ * crypto opertions for filesystems
+ */
+struct fscrypt_operations {
+ int (*get_context)(struct inode *, void *, size_t);
+ int (*prepare_context)(struct inode *);
+ int (*set_context)(struct inode *, const void *, size_t, void *);
+ int (*dummy_context)(struct inode *);
+ bool (*is_encrypted)(struct inode *);
+ bool (*empty_dir)(struct inode *);
+ unsigned (*max_namelen)(struct inode *);
+};
+
+static inline bool fscrypt_dummy_context_enabled(struct inode *inode)
+{
+ if (inode->i_sb->s_cop->dummy_context &&
+ inode->i_sb->s_cop->dummy_context(inode))
+ return true;
+ return false;
+}
+
+static inline bool fscrypt_valid_contents_enc_mode(u32 mode)
+{
+ return (mode == FS_ENCRYPTION_MODE_AES_256_XTS);
+}
+
+static inline bool fscrypt_valid_filenames_enc_mode(u32 mode)
+{
+ return (mode == FS_ENCRYPTION_MODE_AES_256_CTS);
+}
+
+static inline u32 fscrypt_validate_encryption_key_size(u32 mode, u32 size)
+{
+ if (size == fscrypt_key_size(mode))
+ return size;
+ return 0;
+}
+
+static inline bool fscrypt_is_dot_dotdot(const struct qstr *str)
+{
+ if (str->len == 1 && str->name[0] == '.')
+ return true;
+
+ if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
+ return true;
+
+ return false;
+}
+
+static inline struct page *fscrypt_control_page(struct page *page)
+{
+#if IS_ENABLED(CONFIG_FS_ENCRYPTION)
+ return ((struct fscrypt_ctx *)page_private(page))->w.control_page;
+#else
+ WARN_ON_ONCE(1);
+ return ERR_PTR(-EINVAL);
+#endif
+}
+
+static inline int fscrypt_has_encryption_key(struct inode *inode)
+{
+#if IS_ENABLED(CONFIG_FS_ENCRYPTION)
+ return (inode->i_crypt_info != NULL);
+#else
+ return 0;
+#endif
+}
+
+static inline void fscrypt_set_encrypted_dentry(struct dentry *dentry)
+{
+#if IS_ENABLED(CONFIG_FS_ENCRYPTION)
+ spin_lock(&dentry->d_lock);
+ dentry->d_flags |= DCACHE_ENCRYPTED_WITH_KEY;
+ spin_unlock(&dentry->d_lock);
+#endif
+}
+
+#if IS_ENABLED(CONFIG_FS_ENCRYPTION)
+extern const struct dentry_operations fscrypt_d_ops;
+#endif
+
+static inline void fscrypt_set_d_op(struct dentry *dentry)
+{
+#if IS_ENABLED(CONFIG_FS_ENCRYPTION)
+ d_set_d_op(dentry, &fscrypt_d_ops);
+#endif
+}
+
+#if IS_ENABLED(CONFIG_FS_ENCRYPTION)
+/* crypto.c */
+extern struct kmem_cache *fscrypt_info_cachep;
+int fscrypt_initialize(void);
+
+extern struct fscrypt_ctx *fscrypt_get_ctx(struct inode *);
+extern void fscrypt_release_ctx(struct fscrypt_ctx *);
+extern struct page *fscrypt_encrypt_page(struct inode *, struct page *);
+extern int fscrypt_decrypt_page(struct page *);
+extern void fscrypt_decrypt_bio_pages(struct fscrypt_ctx *, struct bio *);
+extern void fscrypt_pullback_bio_page(struct page **, bool);
+extern void fscrypt_restore_control_page(struct page *);
+extern int fscrypt_zeroout_range(struct inode *, pgoff_t, sector_t,
+ unsigned int);
+/* policy.c */
+extern int fscrypt_process_policy(struct inode *,
+ const struct fscrypt_policy *);
+extern int fscrypt_get_policy(struct inode *, struct fscrypt_policy *);
+extern int fscrypt_has_permitted_context(struct inode *, struct inode *);
+extern int fscrypt_inherit_context(struct inode *, struct inode *,
+ void *, bool);
+/* keyinfo.c */
+extern int get_crypt_info(struct inode *);
+extern int fscrypt_get_encryption_info(struct inode *);
+extern void fscrypt_put_encryption_info(struct inode *, struct fscrypt_info *);
+
+/* fname.c */
+extern int fscrypt_setup_filename(struct inode *, const struct qstr *,
+ int lookup, struct fscrypt_name *);
+extern void fscrypt_free_filename(struct fscrypt_name *);
+extern u32 fscrypt_fname_encrypted_size(struct inode *, u32);
+extern int fscrypt_fname_alloc_buffer(struct inode *, u32,
+ struct fscrypt_str *);
+extern void fscrypt_fname_free_buffer(struct fscrypt_str *);
+extern int fscrypt_fname_disk_to_usr(struct inode *, u32, u32,
+ const struct fscrypt_str *, struct fscrypt_str *);
+extern int fscrypt_fname_usr_to_disk(struct inode *, const struct qstr *,
+ struct fscrypt_str *);
+#endif
+
+/* crypto.c */
+static inline struct fscrypt_ctx *fscrypt_notsupp_get_ctx(struct inode *i)
+{
+ return ERR_PTR(-EOPNOTSUPP);
+}
+
+static inline void fscrypt_notsupp_release_ctx(struct fscrypt_ctx *c)
+{
+ return;
+}
+
+static inline struct page *fscrypt_notsupp_encrypt_page(struct inode *i,
+ struct page *p)
+{
+ return ERR_PTR(-EOPNOTSUPP);
+}
+
+static inline int fscrypt_notsupp_decrypt_page(struct page *p)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline void fscrypt_notsupp_decrypt_bio_pages(struct fscrypt_ctx *c,
+ struct bio *b)
+{
+ return;
+}
+
+static inline void fscrypt_notsupp_pullback_bio_page(struct page **p, bool b)
+{
+ return;
+}
+
+static inline void fscrypt_notsupp_restore_control_page(struct page *p)
+{
+ return;
+}
+
+static inline int fscrypt_notsupp_zeroout_range(struct inode *i, pgoff_t p,
+ sector_t s, unsigned int f)
+{
+ return -EOPNOTSUPP;
+}
+
+/* policy.c */
+static inline int fscrypt_notsupp_process_policy(struct inode *i,
+ const struct fscrypt_policy *p)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int fscrypt_notsupp_get_policy(struct inode *i,
+ struct fscrypt_policy *p)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int fscrypt_notsupp_has_permitted_context(struct inode *p,
+ struct inode *i)
+{
+ return 0;
+}
+
+static inline int fscrypt_notsupp_inherit_context(struct inode *p,
+ struct inode *i, void *v, bool b)
+{
+ return -EOPNOTSUPP;
+}
+
+/* keyinfo.c */
+static inline int fscrypt_notsupp_get_encryption_info(struct inode *i)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline void fscrypt_notsupp_put_encryption_info(struct inode *i,
+ struct fscrypt_info *f)
+{
+ return;
+}
+
+ /* fname.c */
+static inline int fscrypt_notsupp_setup_filename(struct inode *dir,
+ const struct qstr *iname,
+ int lookup, struct fscrypt_name *fname)
+{
+ if (dir->i_sb->s_cop->is_encrypted(dir))
+ return -EOPNOTSUPP;
+
+ memset(fname, 0, sizeof(struct fscrypt_name));
+ fname->usr_fname = iname;
+ fname->disk_name.name = (unsigned char *)iname->name;
+ fname->disk_name.len = iname->len;
+ return 0;
+}
+
+static inline void fscrypt_notsupp_free_filename(struct fscrypt_name *fname)
+{
+ return;
+}
+
+static inline u32 fscrypt_notsupp_fname_encrypted_size(struct inode *i, u32 s)
+{
+ /* never happens */
+ WARN_ON(1);
+ return 0;
+}
+
+static inline int fscrypt_notsupp_fname_alloc_buffer(struct inode *inode,
+ u32 ilen, struct fscrypt_str *crypto_str)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline void fscrypt_notsupp_fname_free_buffer(struct fscrypt_str *c)
+{
+ return;
+}
+
+static inline int fscrypt_notsupp_fname_disk_to_usr(struct inode *inode,
+ u32 hash, u32 minor_hash,
+ const struct fscrypt_str *iname,
+ struct fscrypt_str *oname)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int fscrypt_notsupp_fname_usr_to_disk(struct inode *inode,
+ const struct qstr *iname,
+ struct fscrypt_str *oname)
+{
+ return -EOPNOTSUPP;
+}
+#endif /* _LINUX_FSCRYPTO_H */
diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index a1b488809f06..0f565845707b 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -52,6 +52,7 @@ TRACE_DEFINE_ENUM(CP_DISCARD);
{ META_FLUSH, "META_FLUSH" }, \
{ INMEM, "INMEM" }, \
{ INMEM_DROP, "INMEM_DROP" }, \
+ { INMEM_REVOKE, "INMEM_REVOKE" }, \
{ IPU, "IN-PLACE" }, \
{ OPU, "OUT-OF-PLACE" })
@@ -727,7 +728,8 @@ DECLARE_EVENT_CLASS(f2fs__submit_page_bio,
__field(dev_t, dev)
__field(ino_t, ino)
__field(pgoff_t, index)
- __field(block_t, blkaddr)
+ __field(block_t, old_blkaddr)
+ __field(block_t, new_blkaddr)
__field(int, rw)
__field(int, type)
),
@@ -736,16 +738,18 @@ DECLARE_EVENT_CLASS(f2fs__submit_page_bio,
__entry->dev = page->mapping->host->i_sb->s_dev;
__entry->ino = page->mapping->host->i_ino;
__entry->index = page->index;
- __entry->blkaddr = fio->blk_addr;
+ __entry->old_blkaddr = fio->old_blkaddr;
+ __entry->new_blkaddr = fio->new_blkaddr;
__entry->rw = fio->rw;
__entry->type = fio->type;
),
TP_printk("dev = (%d,%d), ino = %lu, page_index = 0x%lx, "
- "blkaddr = 0x%llx, rw = %s%s, type = %s",
+ "oldaddr = 0x%llx, newaddr = 0x%llx rw = %s%s, type = %s",
show_dev_ino(__entry),
(unsigned long)__entry->index,
- (unsigned long long)__entry->blkaddr,
+ (unsigned long long)__entry->old_blkaddr,
+ (unsigned long long)__entry->new_blkaddr,
show_bio_type(__entry->rw),
show_block_type(__entry->type))
);
diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
index d2463396125c..a079d50376e1 100644
--- a/include/uapi/linux/fs.h
+++ b/include/uapi/linux/fs.h
@@ -247,6 +247,24 @@ struct fsxattr {
#define FS_IOC_FSSETXATTR _IOW ('X', 32, struct fsxattr)
/*
+ * File system encryption support
+ */
+/* Policy provided via an ioctl on the topmost directory */
+#define FS_KEY_DESCRIPTOR_SIZE 8
+
+struct fscrypt_policy {
+ __u8 version;
+ __u8 contents_encryption_mode;
+ __u8 filenames_encryption_mode;
+ __u8 flags;
+ __u8 master_key_descriptor[FS_KEY_DESCRIPTOR_SIZE];
+} __packed;
+
+#define FS_IOC_SET_ENCRYPTION_POLICY _IOR('f', 19, struct fscrypt_policy)
+#define FS_IOC_GET_ENCRYPTION_PWSALT _IOW('f', 20, __u8[16])
+#define FS_IOC_GET_ENCRYPTION_POLICY _IOW('f', 21, struct fscrypt_policy)
+
+/*
* Inode flags (FS_IOC_GETFLAGS / FS_IOC_SETFLAGS)
*
* Note: for historical reasons, these flags were originally used and