Re: [PATCH] f2fs: fix potential deadlock by reordering w/ i_sem
From: Jaegeuk Kim
Date: Mon Jul 10 2023 - 13:18:51 EST
On 07/10, Chao Yu wrote:
> syzbot reports deadlock bug as below:
>
> -> #1 (&fi->i_sem){+.+.}-{3:3}:
> down_write+0x3a/0x50 kernel/locking/rwsem.c:1573
> f2fs_down_write fs/f2fs/f2fs.h:2133 [inline]
> f2fs_add_inline_entry+0x3a8/0x760 fs/f2fs/inline.c:644
> f2fs_add_dentry+0xba/0x1e0 fs/f2fs/dir.c:784
> f2fs_do_add_link+0x21e/0x340 fs/f2fs/dir.c:827
> f2fs_add_link fs/f2fs/f2fs.h:3554 [inline]
> f2fs_create+0x32c/0x530 fs/f2fs/namei.c:377
> lookup_open fs/namei.c:3492 [inline]
> open_last_lookups fs/namei.c:3560 [inline]
> path_openat+0x13e7/0x3180 fs/namei.c:3790
> do_filp_open+0x234/0x490 fs/namei.c:3820
> do_sys_openat2+0x13e/0x1d0 fs/open.c:1407
> do_sys_open fs/open.c:1422 [inline]
> __do_sys_open fs/open.c:1430 [inline]
> __se_sys_open fs/open.c:1426 [inline]
> __x64_sys_open+0x225/0x270 fs/open.c:1426
> do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
> entry_SYSCALL_64_after_hwframe+0x63/0xcd
>
> -> #0 (&fi->i_xattr_sem){.+.+}-{3:3}:
> check_prev_add kernel/locking/lockdep.c:3142 [inline]
> check_prevs_add kernel/locking/lockdep.c:3261 [inline]
> validate_chain kernel/locking/lockdep.c:3876 [inline]
> __lock_acquire+0x39ff/0x7f70 kernel/locking/lockdep.c:5144
> lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5761
> down_read+0x47/0x2f0 kernel/locking/rwsem.c:1520
> f2fs_down_read fs/f2fs/f2fs.h:2108 [inline]
> f2fs_getxattr+0xb8/0x1460 fs/f2fs/xattr.c:532
> __f2fs_get_acl+0x52/0x8e0 fs/f2fs/acl.c:179
> f2fs_acl_create fs/f2fs/acl.c:377 [inline]
> f2fs_init_acl+0xd7/0x9a0 fs/f2fs/acl.c:420
> f2fs_init_inode_metadata+0x824/0x1190 fs/f2fs/dir.c:558
> f2fs_do_tmpfile+0x34/0x170 fs/f2fs/dir.c:839
> __f2fs_tmpfile+0x1f9/0x380 fs/f2fs/namei.c:884
> f2fs_ioc_start_atomic_write+0x4a3/0x9e0 fs/f2fs/file.c:2099
> __f2fs_ioctl+0x1b5c/0xb770
> vfs_ioctl fs/ioctl.c:51 [inline]
> __do_sys_ioctl fs/ioctl.c:870 [inline]
> __se_sys_ioctl+0xf8/0x170 fs/ioctl.c:856
> do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
> entry_SYSCALL_64_after_hwframe+0x63/0xcd
>
> The root cause is as below reversed lock order:
> - f2fs_create
> - f2fs_add_dentry
> - f2fs_down_write(&F2FS_I(dir)->i_xattr_sem)
> - f2fs_ioc_start_atomic_write
> - __f2fs_tmpfile
> - f2fs_do_tmpfile
> - f2fs_down_write(&F2FS_I(inode)->i_sem)
> - f2fs_init_inode_metadata
> - f2fs_init_acl
> - __f2fs_get_acl
> - f2fs_getxattr
> - f2fs_down_read(&F2FS_I(dir)->i_xattr_sem)
> - f2fs_add_inline_entry
> - f2fs_down_write(&F2FS_I(inode)->i_sem)
How is it possible to get two inode are identical?
>
> We can break the dependency of deadlock by below change:
> - use i_sem to keep order of {get,set}xattr instead of i_xattr_sem
> - keep below lock order in inode operation to avoid deadlock:
> dir->i_sem -> inode->i_sem
> dir->i_sem -> dpage_lock
>
> Fixes: 5eda1ad1aaff ("f2fs: fix deadlock in i_xattr_sem and inode page lock")
> Reported-by: syzbot+e5600587fa9cbf8e3826@xxxxxxxxxxxxxxxxxxxxxxxxx
> Closes: https://lore.kernel.org/linux-f2fs-devel/00000000000096797d06001a359d@xxxxxxxxxx
> Signed-off-by: Chao Yu <chao@xxxxxxxxxx>
> ---
> fs/f2fs/acl.c | 36 +++++++++++++++++++-----------------
> fs/f2fs/acl.h | 4 ++--
> fs/f2fs/dir.c | 22 ++++++++++++++++------
> fs/f2fs/f2fs.h | 1 -
> fs/f2fs/super.c | 5 ++---
> fs/f2fs/verity.c | 5 +++--
> fs/f2fs/xattr.c | 37 +++++++++++++++++++++----------------
> fs/f2fs/xattr.h | 19 +++++++++++++------
> 8 files changed, 76 insertions(+), 53 deletions(-)
>
> diff --git a/fs/f2fs/acl.c b/fs/f2fs/acl.c
> index ec2aeccb69a3..af58b38e953c 100644
> --- a/fs/f2fs/acl.c
> +++ b/fs/f2fs/acl.c
> @@ -166,7 +166,7 @@ static void *f2fs_acl_to_disk(struct f2fs_sb_info *sbi,
> }
>
> static struct posix_acl *__f2fs_get_acl(struct inode *inode, int type,
> - struct page *dpage)
> + struct page *dpage, bool locked)
> {
> int name_index = F2FS_XATTR_INDEX_POSIX_ACL_DEFAULT;
> void *value = NULL;
> @@ -176,13 +176,13 @@ static struct posix_acl *__f2fs_get_acl(struct inode *inode, int type,
> if (type == ACL_TYPE_ACCESS)
> name_index = F2FS_XATTR_INDEX_POSIX_ACL_ACCESS;
>
> - retval = f2fs_getxattr(inode, name_index, "", NULL, 0, dpage);
> + retval = f2fs_getxattr(inode, name_index, "", NULL, 0, dpage, locked);
> if (retval > 0) {
> value = f2fs_kmalloc(F2FS_I_SB(inode), retval, GFP_F2FS_ZERO);
> if (!value)
> return ERR_PTR(-ENOMEM);
> retval = f2fs_getxattr(inode, name_index, "", value,
> - retval, dpage);
> + retval, dpage, locked);
> }
>
> if (retval > 0)
> @@ -201,7 +201,7 @@ struct posix_acl *f2fs_get_acl(struct inode *inode, int type, bool rcu)
> if (rcu)
> return ERR_PTR(-ECHILD);
>
> - return __f2fs_get_acl(inode, type, NULL);
> + return __f2fs_get_acl(inode, type, NULL, false);
> }
>
> static int f2fs_acl_update_mode(struct mnt_idmap *idmap,
> @@ -226,9 +226,9 @@ static int f2fs_acl_update_mode(struct mnt_idmap *idmap,
> return 0;
> }
>
> -static int __f2fs_set_acl(struct mnt_idmap *idmap,
> - struct inode *inode, int type,
> - struct posix_acl *acl, struct page *ipage)
> +static int __f2fs_set_acl(struct mnt_idmap *idmap, struct inode *inode,
> + int type, struct posix_acl *acl,
> + struct page *ipage, bool locked)
> {
> int name_index;
> void *value = NULL;
> @@ -266,7 +266,8 @@ static int __f2fs_set_acl(struct mnt_idmap *idmap,
> }
> }
>
> - error = f2fs_setxattr(inode, name_index, "", value, size, ipage, 0);
> + error = f2fs_setxattr(inode, name_index, "", value, size,
> + ipage, 0, locked);
>
> kfree(value);
> if (!error)
> @@ -284,7 +285,7 @@ int f2fs_set_acl(struct mnt_idmap *idmap, struct dentry *dentry,
> if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
> return -EIO;
>
> - return __f2fs_set_acl(idmap, inode, type, acl, NULL);
> + return __f2fs_set_acl(idmap, inode, type, acl, NULL, false);
> }
>
> /*
> @@ -362,7 +363,7 @@ static int f2fs_acl_create_masq(struct posix_acl *acl, umode_t *mode_p)
>
> static int f2fs_acl_create(struct inode *dir, umode_t *mode,
> struct posix_acl **default_acl, struct posix_acl **acl,
> - struct page *dpage)
> + struct page *dpage, bool locked)
> {
> struct posix_acl *p;
> struct posix_acl *clone;
> @@ -374,7 +375,7 @@ static int f2fs_acl_create(struct inode *dir, umode_t *mode,
> if (S_ISLNK(*mode) || !IS_POSIXACL(dir))
> return 0;
>
> - p = __f2fs_get_acl(dir, ACL_TYPE_DEFAULT, dpage);
> + p = __f2fs_get_acl(dir, ACL_TYPE_DEFAULT, dpage, locked);
> if (!p || p == ERR_PTR(-EOPNOTSUPP)) {
> *mode &= ~current_umask();
> return 0;
> @@ -412,28 +413,29 @@ static int f2fs_acl_create(struct inode *dir, umode_t *mode,
> }
>
> int f2fs_init_acl(struct inode *inode, struct inode *dir, struct page *ipage,
> - struct page *dpage)
> + struct page *dpage, bool locked)
> {
> struct posix_acl *default_acl = NULL, *acl = NULL;
> int error;
>
> - error = f2fs_acl_create(dir, &inode->i_mode, &default_acl, &acl, dpage);
> + error = f2fs_acl_create(dir, &inode->i_mode, &default_acl, &acl,
> + dpage, locked);
> if (error)
> return error;
>
> f2fs_mark_inode_dirty_sync(inode, true);
>
> if (default_acl) {
> - error = __f2fs_set_acl(NULL, inode, ACL_TYPE_DEFAULT, default_acl,
> - ipage);
> + error = __f2fs_set_acl(NULL, inode, ACL_TYPE_DEFAULT,
> + default_acl, ipage, locked);
> posix_acl_release(default_acl);
> } else {
> inode->i_default_acl = NULL;
> }
> if (acl) {
> if (!error)
> - error = __f2fs_set_acl(NULL, inode, ACL_TYPE_ACCESS, acl,
> - ipage);
> + error = __f2fs_set_acl(NULL, inode, ACL_TYPE_ACCESS,
> + acl, ipage, locked);
> posix_acl_release(acl);
> } else {
> inode->i_acl = NULL;
> diff --git a/fs/f2fs/acl.h b/fs/f2fs/acl.h
> index 94ebfbfbdc6f..9c14b6f549c6 100644
> --- a/fs/f2fs/acl.h
> +++ b/fs/f2fs/acl.h
> @@ -37,13 +37,13 @@ extern struct posix_acl *f2fs_get_acl(struct inode *, int, bool);
> extern int f2fs_set_acl(struct mnt_idmap *, struct dentry *,
> struct posix_acl *, int);
> extern int f2fs_init_acl(struct inode *, struct inode *, struct page *,
> - struct page *);
> + struct page *, bool);
> #else
> #define f2fs_get_acl NULL
> #define f2fs_set_acl NULL
>
> static inline int f2fs_init_acl(struct inode *inode, struct inode *dir,
> - struct page *ipage, struct page *dpage)
> + struct page *ipage, struct page *dpage, bool locked)
> {
> return 0;
> }
> diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c
> index d635c58cf5a3..4b5c62e18d67 100644
> --- a/fs/f2fs/dir.c
> +++ b/fs/f2fs/dir.c
> @@ -540,6 +540,8 @@ struct page *f2fs_init_inode_metadata(struct inode *inode, struct inode *dir,
> int err;
>
> if (is_inode_flag_set(inode, FI_NEW_INODE)) {
> + struct f2fs_xattr_arg xarg;
> +
> page = f2fs_new_inode_page(inode);
> if (IS_ERR(page))
> return page;
> @@ -555,12 +557,16 @@ struct page *f2fs_init_inode_metadata(struct inode *inode, struct inode *dir,
> put_page(page);
> }
>
> - err = f2fs_init_acl(inode, dir, page, dpage);
> + err = f2fs_init_acl(inode, dir, page, dpage, true);
> if (err)
> goto put_error;
>
> + xarg.page = page;
> + xarg.locked = true;
> +
> err = f2fs_init_security(inode, dir,
> - fname ? fname->usr_fname : NULL, page);
> + fname ? fname->usr_fname : NULL,
> + &xarg);
> if (err)
> goto put_error;
>
> @@ -775,18 +781,20 @@ int f2fs_add_dentry(struct inode *dir, const struct f2fs_filename *fname,
> {
> int err = -EAGAIN;
>
> + f2fs_down_read(&F2FS_I(dir)->i_sem);
> +
> if (f2fs_has_inline_dentry(dir)) {
> /*
> - * Should get i_xattr_sem to keep the lock order:
> - * i_xattr_sem -> inode_page lock used by f2fs_setxattr.
> + * Should get i_sem to keep the lock order:
> + * i_sem -> inode_page lock used by f2fs_setxattr.
> */
> - f2fs_down_read(&F2FS_I(dir)->i_xattr_sem);
> err = f2fs_add_inline_entry(dir, fname, inode, ino, mode);
> - f2fs_up_read(&F2FS_I(dir)->i_xattr_sem);
> }
> if (err == -EAGAIN)
> err = f2fs_add_regular_entry(dir, fname, inode, ino, mode);
>
> + f2fs_up_read(&F2FS_I(dir)->i_sem);
> +
> f2fs_update_time(F2FS_I_SB(dir), REQ_TIME);
> return err;
> }
> @@ -835,6 +843,7 @@ int f2fs_do_tmpfile(struct inode *inode, struct inode *dir)
> struct page *page;
> int err = 0;
>
> + f2fs_down_write(&F2FS_I(dir)->i_sem);
> f2fs_down_write(&F2FS_I(inode)->i_sem);
> page = f2fs_init_inode_metadata(inode, dir, NULL, NULL);
> if (IS_ERR(page)) {
> @@ -847,6 +856,7 @@ int f2fs_do_tmpfile(struct inode *inode, struct inode *dir)
> f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
> fail:
> f2fs_up_write(&F2FS_I(inode)->i_sem);
> + f2fs_up_write(&F2FS_I(dir)->i_sem);
> return err;
> }
>
> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> index c7cb2177b252..60ec032be48d 100644
> --- a/fs/f2fs/f2fs.h
> +++ b/fs/f2fs/f2fs.h
> @@ -838,7 +838,6 @@ struct f2fs_inode_info {
>
> /* avoid racing between foreground op and gc */
> struct f2fs_rwsem i_gc_rwsem[2];
> - struct f2fs_rwsem i_xattr_sem; /* avoid racing between reading and changing EAs */
>
> int i_extra_isize; /* size of extra space located in i_addr */
> kprojid_t i_projid; /* id for project quota */
> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
> index ca31163da00a..c72fda24cffd 100644
> --- a/fs/f2fs/super.c
> +++ b/fs/f2fs/super.c
> @@ -1418,7 +1418,6 @@ static struct inode *f2fs_alloc_inode(struct super_block *sb)
> INIT_LIST_HEAD(&fi->gdirty_list);
> init_f2fs_rwsem(&fi->i_gc_rwsem[READ]);
> init_f2fs_rwsem(&fi->i_gc_rwsem[WRITE]);
> - init_f2fs_rwsem(&fi->i_xattr_sem);
>
> /* Will be used by directory only */
> fi->i_dir_level = F2FS_SB(sb)->dir_level;
> @@ -3163,7 +3162,7 @@ static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
> {
> return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
> F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
> - ctx, len, NULL);
> + ctx, len, NULL, false);
> }
>
> static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
> @@ -3183,7 +3182,7 @@ static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
>
> return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
> F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
> - ctx, len, fs_data, XATTR_CREATE);
> + ctx, len, fs_data, XATTR_CREATE, true);
> }
>
> static const union fscrypt_policy *f2fs_get_dummy_policy(struct super_block *sb)
> diff --git a/fs/f2fs/verity.c b/fs/f2fs/verity.c
> index 4fc95f353a7a..e181528b1f26 100644
> --- a/fs/f2fs/verity.c
> +++ b/fs/f2fs/verity.c
> @@ -181,7 +181,7 @@ static int f2fs_end_enable_verity(struct file *filp, const void *desc,
> /* Set the verity xattr. */
> err = f2fs_setxattr(inode, F2FS_XATTR_INDEX_VERITY,
> F2FS_XATTR_NAME_VERITY, &dloc, sizeof(dloc),
> - NULL, XATTR_CREATE);
> + NULL, XATTR_CREATE, false);
> if (err)
> goto cleanup;
>
> @@ -226,7 +226,8 @@ static int f2fs_get_verity_descriptor(struct inode *inode, void *buf,
>
> /* Get the descriptor location */
> res = f2fs_getxattr(inode, F2FS_XATTR_INDEX_VERITY,
> - F2FS_XATTR_NAME_VERITY, &dloc, sizeof(dloc), NULL);
> + F2FS_XATTR_NAME_VERITY, &dloc, sizeof(dloc),
> + NULL, false);
> if (res < 0 && res != -ERANGE)
> return res;
> if (res != sizeof(dloc) || dloc.version != cpu_to_le32(F2FS_VERIFY_VER)) {
> diff --git a/fs/f2fs/xattr.c b/fs/f2fs/xattr.c
> index 476b186b90a6..a6a611f8a771 100644
> --- a/fs/f2fs/xattr.c
> +++ b/fs/f2fs/xattr.c
> @@ -61,7 +61,7 @@ static int f2fs_xattr_generic_get(const struct xattr_handler *handler,
> return -EINVAL;
> }
> return f2fs_getxattr(inode, handler->flags, name,
> - buffer, size, NULL);
> + buffer, size, NULL, false);
> }
>
> static int f2fs_xattr_generic_set(const struct xattr_handler *handler,
> @@ -84,7 +84,7 @@ static int f2fs_xattr_generic_set(const struct xattr_handler *handler,
> return -EINVAL;
> }
> return f2fs_setxattr(inode, handler->flags, name,
> - value, size, NULL, flags);
> + value, size, NULL, flags, false);
> }
>
> static bool f2fs_xattr_user_list(struct dentry *dentry)
> @@ -136,15 +136,16 @@ static int f2fs_xattr_advise_set(const struct xattr_handler *handler,
>
> #ifdef CONFIG_F2FS_FS_SECURITY
> static int f2fs_initxattrs(struct inode *inode, const struct xattr *xattr_array,
> - void *page)
> + void *fs_data)
> {
> + struct f2fs_xattr_arg *xarg = (struct f2fs_xattr_arg *)fs_data;
> const struct xattr *xattr;
> int err = 0;
>
> for (xattr = xattr_array; xattr->name != NULL; xattr++) {
> err = f2fs_setxattr(inode, F2FS_XATTR_INDEX_SECURITY,
> xattr->name, xattr->value,
> - xattr->value_len, (struct page *)page, 0);
> + xattr->value_len, xarg->page, 0, xarg->locked);
> if (err < 0)
> break;
> }
> @@ -152,10 +153,11 @@ static int f2fs_initxattrs(struct inode *inode, const struct xattr *xattr_array,
> }
>
> int f2fs_init_security(struct inode *inode, struct inode *dir,
> - const struct qstr *qstr, struct page *ipage)
> + const struct qstr *qstr,
> + struct f2fs_xattr_arg *xarg)
> {
> return security_inode_init_security(inode, dir, qstr,
> - &f2fs_initxattrs, ipage);
> + &f2fs_initxattrs, xarg);
> }
> #endif
>
> @@ -512,7 +514,8 @@ static inline int write_all_xattrs(struct inode *inode, __u32 hsize,
> }
>
> int f2fs_getxattr(struct inode *inode, int index, const char *name,
> - void *buffer, size_t buffer_size, struct page *ipage)
> + void *buffer, size_t buffer_size,
> + struct page *ipage, bool locked)
> {
> struct f2fs_xattr_entry *entry = NULL;
> int error;
> @@ -528,12 +531,12 @@ int f2fs_getxattr(struct inode *inode, int index, const char *name,
> if (len > F2FS_NAME_LEN)
> return -ERANGE;
>
> - if (!ipage)
> - f2fs_down_read(&F2FS_I(inode)->i_xattr_sem);
> + if (!locked)
> + f2fs_down_read(&F2FS_I(inode)->i_sem);
> error = lookup_all_xattrs(inode, ipage, index, len, name,
> &entry, &base_addr, &base_size, &is_inline);
> - if (!ipage)
> - f2fs_up_read(&F2FS_I(inode)->i_xattr_sem);
> + if (!locked)
> + f2fs_up_read(&F2FS_I(inode)->i_sem);
> if (error)
> return error;
>
> @@ -567,9 +570,9 @@ ssize_t f2fs_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size)
> int error;
> size_t rest = buffer_size;
>
> - f2fs_down_read(&F2FS_I(inode)->i_xattr_sem);
> + f2fs_down_read(&F2FS_I(inode)->i_sem);
> error = read_all_xattrs(inode, NULL, &base_addr);
> - f2fs_up_read(&F2FS_I(inode)->i_xattr_sem);
> + f2fs_up_read(&F2FS_I(inode)->i_sem);
> if (error)
> return error;
>
> @@ -775,7 +778,7 @@ static int __f2fs_setxattr(struct inode *inode, int index,
>
> int f2fs_setxattr(struct inode *inode, int index, const char *name,
> const void *value, size_t size,
> - struct page *ipage, int flags)
> + struct page *ipage, int flags, bool locked)
> {
> struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
> int err;
> @@ -796,9 +799,11 @@ int f2fs_setxattr(struct inode *inode, int index, const char *name,
> f2fs_balance_fs(sbi, true);
>
> f2fs_lock_op(sbi);
> - f2fs_down_write(&F2FS_I(inode)->i_xattr_sem);
> + if (!locked)
> + f2fs_down_write(&F2FS_I(inode)->i_sem);
> err = __f2fs_setxattr(inode, index, name, value, size, ipage, flags);
> - f2fs_up_write(&F2FS_I(inode)->i_xattr_sem);
> + if (!locked)
> + f2fs_up_write(&F2FS_I(inode)->i_sem);
> f2fs_unlock_op(sbi);
>
> f2fs_update_time(sbi, REQ_TIME);
> diff --git a/fs/f2fs/xattr.h b/fs/f2fs/xattr.h
> index b1811c392e6f..170e4a49af31 100644
> --- a/fs/f2fs/xattr.h
> +++ b/fs/f2fs/xattr.h
> @@ -52,6 +52,11 @@ struct f2fs_xattr_entry {
> char e_name[]; /* attribute name */
> };
>
> +struct f2fs_xattr_arg {
> + struct page *page; /* inode page */
> + bool locked; /* indicate i_sem is locked */
> +};
> +
> #define XATTR_HDR(ptr) ((struct f2fs_xattr_header *)(ptr))
> #define XATTR_ENTRY(ptr) ((struct f2fs_xattr_entry *)(ptr))
> #define XATTR_FIRST_ENTRY(ptr) (XATTR_ENTRY(XATTR_HDR(ptr) + 1))
> @@ -128,9 +133,9 @@ extern const struct xattr_handler f2fs_xattr_security_handler;
> extern const struct xattr_handler *f2fs_xattr_handlers[];
>
> extern int f2fs_setxattr(struct inode *, int, const char *,
> - const void *, size_t, struct page *, int);
> + const void *, size_t, struct page *, int, bool);
> extern int f2fs_getxattr(struct inode *, int, const char *, void *,
> - size_t, struct page *);
> + size_t, struct page *, bool locked);
> extern ssize_t f2fs_listxattr(struct dentry *, char *, size_t);
> extern int f2fs_init_xattr_caches(struct f2fs_sb_info *);
> extern void f2fs_destroy_xattr_caches(struct f2fs_sb_info *);
> @@ -140,13 +145,13 @@ extern void f2fs_destroy_xattr_caches(struct f2fs_sb_info *);
> #define f2fs_listxattr NULL
> static inline int f2fs_setxattr(struct inode *inode, int index,
> const char *name, const void *value, size_t size,
> - struct page *page, int flags)
> + struct page *page, int flags, bool locked)
> {
> return -EOPNOTSUPP;
> }
> static inline int f2fs_getxattr(struct inode *inode, int index,
> const char *name, void *buffer,
> - size_t buffer_size, struct page *dpage)
> + size_t buffer_size, struct page *dpage, bool locked)
> {
> return -EOPNOTSUPP;
> }
> @@ -156,10 +161,12 @@ static inline void f2fs_destroy_xattr_caches(struct f2fs_sb_info *sbi) { }
>
> #ifdef CONFIG_F2FS_FS_SECURITY
> extern int f2fs_init_security(struct inode *, struct inode *,
> - const struct qstr *, struct page *);
> + const struct qstr *,
> + struct f2fs_xattr_arg *xarg);
> #else
> static inline int f2fs_init_security(struct inode *inode, struct inode *dir,
> - const struct qstr *qstr, struct page *ipage)
> + const struct qstr *qstr,
> + struct f2fs_xattr_arg *xarg)
> {
> return 0;
> }
> --
> 2.40.1