This switches f2fs over to the generic support provided in
commit 5f829feca774 ("fs: Add standard casefolding support")Signed-off-by: Daniel Rosenberg <[email protected]> --- fs/f2fs/dir.c | 84 +++++------------------------------------ fs/f2fs/f2fs.h | 4 -- fs/f2fs/super.c | 10 ++--- fs/f2fs/sysfs.c | 10 +++-- include/linux/f2fs_fs.h | 3 -- 5 files changed, 21 insertions(+), 90 deletions(-) diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index d35976785e8c5..b59c2673daa09 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -75,21 +75,22 @@ int f2fs_init_casefolded_name(const struct inode *dir, struct f2fs_filename *fname) { #ifdef CONFIG_UNICODE - struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); + struct super_block *sb = dir->i_sb; + struct f2fs_sb_info *sbi = F2FS_SB(sb); if (IS_CASEFOLDED(dir)) { fname->cf_name.name = f2fs_kmalloc(sbi, F2FS_NAME_LEN, GFP_NOFS); if (!fname->cf_name.name) return -ENOMEM; - fname->cf_name.len = utf8_casefold(sbi->s_encoding, + fname->cf_name.len = utf8_casefold(sb->s_encoding, fname->usr_fname, fname->cf_name.name, F2FS_NAME_LEN); if ((int)fname->cf_name.len <= 0) { kfree(fname->cf_name.name); fname->cf_name.name = NULL; - if (f2fs_has_strict_mode(sbi)) + if (sb_has_enc_strict_mode(sb)) return -EINVAL; /* fall back to treating name as opaque byte sequence */ } @@ -215,8 +216,9 @@ static struct f2fs_dir_entry *find_in_block(struct inode *dir, static bool f2fs_match_ci_name(const struct inode *dir, const struct qstr *name, const u8 *de_name, u32 de_name_len) { - const struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); - const struct unicode_map *um = sbi->s_encoding; + const struct super_block *sb = dir->i_sb; + const struct f2fs_sb_info *sbi = F2FS_SB(sb); + const struct unicode_map *um = sb->s_encoding; struct qstr entry = QSTR_INIT(de_name, de_name_len); int res; @@ -226,7 +228,7 @@ static bool f2fs_match_ci_name(const struct inode *dir, const struct qstr *name, * In strict mode, ignore invalid names. In non-strict mode, * fall back to treating them as opaque byte sequences. */ - if (f2fs_has_strict_mode(sbi) || name->len != entry.len) + if (sb_has_enc_strict_mode(sb) || name->len != entry.len) return false; return !memcmp(name->name, entry.name, name->len); } @@ -1107,75 +1109,9 @@ const struct file_operations f2fs_dir_operations = { }; #ifdef CONFIG_UNICODE -static int f2fs_d_compare(const struct dentry *dentry, unsigned int len, - const char *str, const struct qstr *name) -{ - const struct dentry *parent = READ_ONCE(dentry->d_parent); - const struct inode *dir = READ_ONCE(parent->d_inode); - const struct f2fs_sb_info *sbi = F2FS_SB(dentry->d_sb); - struct qstr entry = QSTR_INIT(str, len); - char strbuf[DNAME_INLINE_LEN]; - int res; - - if (!dir || !IS_CASEFOLDED(dir)) - goto fallback; - - /* - * If the dentry name is stored in-line, then it may be concurrently - * modified by a rename. If this happens, the VFS will eventually retry - * the lookup, so it doesn't matter what ->d_compare() returns. - * However, it's unsafe to call utf8_strncasecmp() with an unstable - * string. Therefore, we have to copy the name into a temporary buffer. - */ - if (len <= DNAME_INLINE_LEN - 1) { - memcpy(strbuf, str, len); - strbuf[len] = 0; - entry.name = strbuf; - /* prevent compiler from optimizing out the temporary buffer */ - barrier(); - } - - res = utf8_strncasecmp(sbi->s_encoding, name, &entry); - if (res >= 0) - return res; - - if (f2fs_has_strict_mode(sbi)) - return -EINVAL; -fallback: - if (len != name->len) - return 1; - return !!memcmp(str, name->name, len); -} - -static int f2fs_d_hash(const struct dentry *dentry, struct qstr *str) -{ - struct f2fs_sb_info *sbi = F2FS_SB(dentry->d_sb); - const struct unicode_map *um = sbi->s_encoding; - const struct inode *inode = READ_ONCE(dentry->d_inode); - unsigned char *norm; - int len, ret = 0; - - if (!inode || !IS_CASEFOLDED(inode)) - return 0; - - norm = f2fs_kmalloc(sbi, PATH_MAX, GFP_ATOMIC); - if (!norm) - return -ENOMEM; - - len = utf8_casefold(um, str, norm, PATH_MAX); - if (len < 0) { - if (f2fs_has_strict_mode(sbi)) - ret = -EINVAL; - goto out; - } - str->hash = full_name_hash(dentry, norm, len); -out: - kvfree(norm); - return ret; -} const struct dentry_operations f2fs_dentry_ops = { - .d_hash = f2fs_d_hash, - .d_compare = f2fs_d_compare, + .d_hash = generic_ci_d_hash, + .d_compare = generic_ci_d_compare, }; #endif diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index b35a50f4953c5..d11ffe26bfded 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -1402,10 +1402,6 @@ struct f2fs_sb_info { int valid_super_block; /* valid super block no */ unsigned long s_flag; /* flags for sbi */ struct mutex writepages; /* mutex for writepages() */ -#ifdef CONFIG_UNICODE - struct unicode_map *s_encoding; - __u16 s_encoding_flags; -#endif #ifdef CONFIG_BLK_DEV_ZONED unsigned int blocks_per_blkz; /* F2FS blocks per zone */ diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 20e56b0fa46a9..cca7a83ffa089 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1257,7 +1257,7 @@ static void f2fs_put_super(struct super_block *sb) for (i = 0; i < NR_PAGE_TYPE; i++) kvfree(sbi->write_io[i]); #ifdef CONFIG_UNICODE - utf8_unload(sbi->s_encoding); + utf8_unload(sb->s_encoding); #endif kvfree(sbi); } @@ -3278,7 +3278,7 @@ static int f2fs_scan_devices(struct f2fs_sb_info *sbi) static int f2fs_setup_casefold(struct f2fs_sb_info *sbi) { #ifdef CONFIG_UNICODE - if (f2fs_sb_has_casefold(sbi) && !sbi->s_encoding) { + if (f2fs_sb_has_casefold(sbi) && !sbi->sb->s_encoding) { const struct f2fs_sb_encodings *encoding_info; struct unicode_map *encoding; __u16 encoding_flags; @@ -3309,8 +3309,8 @@ static int f2fs_setup_casefold(struct f2fs_sb_info *sbi) "%s-%s with flags 0x%hx", encoding_info->name, encoding_info->version?:"\b", encoding_flags); - sbi->s_encoding = encoding; - sbi->s_encoding_flags = encoding_flags; + sbi->sb->s_encoding = encoding; + sbi->sb->s_encoding_flags = encoding_flags; sbi->sb->s_d_op = &f2fs_dentry_ops; } #else @@ -3806,7 +3806,7 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent) kvfree(sbi->write_io[i]); #ifdef CONFIG_UNICODE - utf8_unload(sbi->s_encoding); + utf8_unload(sb->s_encoding); #endif free_options: #ifdef CONFIG_QUOTA diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c index e877c59b9fdb4..8bee99ab3978e 100644 --- a/fs/f2fs/sysfs.c +++ b/fs/f2fs/sysfs.c @@ -176,12 +176,14 @@ static ssize_t encoding_show(struct f2fs_attr *a, struct f2fs_sb_info *sbi, char *buf) { #ifdef CONFIG_UNICODE + struct super_block *sb = sbi->sb; + if (f2fs_sb_has_casefold(sbi)) return snprintf(buf, PAGE_SIZE, "%s (%d.%d.%d)\n", - sbi->s_encoding->charset, - (sbi->s_encoding->version >> 16) & 0xff, - (sbi->s_encoding->version >> 8) & 0xff, - sbi->s_encoding->version & 0xff); + sb->s_encoding->charset, + (sb->s_encoding->version >> 16) & 0xff, + (sb->s_encoding->version >> 8) & 0xff, + sb->s_encoding->version & 0xff); #endif return sprintf(buf, "(none)"); } diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h index 3c383ddd92ddd..a5dbb57a687fb 100644 --- a/include/linux/f2fs_fs.h +++ b/include/linux/f2fs_fs.h @@ -38,9 +38,6 @@ #define F2FS_MAX_QUOTAS 3 #define F2FS_ENC_UTF8_12_1 1 -#define F2FS_ENC_STRICT_MODE_FL (1 << 0) -#define f2fs_has_strict_mode(sbi) \ - (sbi->s_encoding_flags & F2FS_ENC_STRICT_MODE_FL) #define F2FS_IO_SIZE(sbi) (1 << F2FS_OPTION(sbi).write_io_size_bits) /* Blocks */ #define F2FS_IO_SIZE_KB(sbi) (1 << (F2FS_OPTION(sbi).write_io_size_bits + 2)) /* KB */ -- 2.27.0.111.gc72c7da667-goog
