[PATCH 6.0 0634/1073] f2fs: fix to enable compress for newly created file if extension matches

From: Sheng Yong shengyong@oppo.com

[ Upstream commit 787caf1bdcd9f04058e4e8d8ed56db1dbafea0b7 ]

If compress_extension is set, and a newly created file matches the extension, the file could be marked as compression file. However, if inline_data is also enabled, there is no chance to check its extension since f2fs_should_compress() always returns false.

This patch moves set_compress_inode(), which do extension check, in f2fs_should_compress() to check extensions before setting inline data flag.

Fixes: 7165841d578e ("f2fs: fix to check inline_data during compressed inode conversion") Signed-off-by: Sheng Yong shengyong@oppo.com Reviewed-by: Chao Yu chao@kernel.org Signed-off-by: Jaegeuk Kim jaegeuk@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- fs/f2fs/f2fs.h | 2 +- fs/f2fs/namei.c | 329 ++++++++++++++++++++++++------------------------ 2 files changed, 164 insertions(+), 167 deletions(-)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 1e57b11ffe2a..a7227640fbdf 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -2966,7 +2966,7 @@ static inline void f2fs_change_bit(unsigned int nr, char *addr) /* Flags that should be inherited by new inodes from their parent. */ #define F2FS_FL_INHERITED (F2FS_SYNC_FL | F2FS_NODUMP_FL | F2FS_NOATIME_FL | \ F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \ - F2FS_CASEFOLD_FL | F2FS_COMPR_FL | F2FS_NOCOMP_FL) + F2FS_CASEFOLD_FL)

/* Flags that are appropriate for regular files (all but dir-specific ones). */ #define F2FS_REG_FLMASK (~(F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \ diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c index bf00d5057abb..0073e3511b2a 100644 --- a/fs/f2fs/namei.c +++ b/fs/f2fs/namei.c @@ -22,8 +22,163 @@ #include "acl.h" #include <trace/events/f2fs.h>

+static inline int is_extension_exist(const unsigned char *s, const char *sub, + bool tmp_ext) +{ + size_t slen = strlen(s); + size_t sublen = strlen(sub); + int i; + + if (sublen == 1 && *sub == '*') + return 1; + + /* + * filename format of multimedia file should be defined as: + * "filename + '.' + extension + (optional: '.' + temp extension)". + */ + if (slen < sublen + 2) + return 0; + + if (!tmp_ext) { + /* file has no temp extension */ + if (s[slen - sublen - 1] != '.') + return 0; + return !strncasecmp(s + slen - sublen, sub, sublen); + } + + for (i = 1; i < slen - sublen; i++) { + if (s[i] != '.') + continue; + if (!strncasecmp(s + i + 1, sub, sublen)) + return 1; + } + + return 0; +} + +int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name, + bool hot, bool set) +{ + __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list; + int cold_count = le32_to_cpu(sbi->raw_super->extension_count); + int hot_count = sbi->raw_super->hot_ext_count; + int total_count = cold_count + hot_count; + int start, count; + int i; + + if (set) { + if (total_count == F2FS_MAX_EXTENSION) + return -EINVAL; + } else { + if (!hot && !cold_count) + return -EINVAL; + if (hot && !hot_count) + return -EINVAL; + } + + if (hot) { + start = cold_count; + count = total_count; + } else { + start = 0; + count = cold_count; + } + + for (i = start; i < count; i++) { + if (strcmp(name, extlist[i])) + continue; + + if (set) + return -EINVAL; + + memcpy(extlist[i], extlist[i + 1], + F2FS_EXTENSION_LEN * (total_count - i - 1)); + memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN); + if (hot) + sbi->raw_super->hot_ext_count = hot_count - 1; + else + sbi->raw_super->extension_count = + cpu_to_le32(cold_count - 1); + return 0; + } + + if (!set) + return -EINVAL; + + if (hot) { + memcpy(extlist[count], name, strlen(name)); + sbi->raw_super->hot_ext_count = hot_count + 1; + } else { + char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN]; + + memcpy(buf, &extlist[cold_count], + F2FS_EXTENSION_LEN * hot_count); + memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN); + memcpy(extlist[cold_count], name, strlen(name)); + memcpy(&extlist[cold_count + 1], buf, + F2FS_EXTENSION_LEN * hot_count); + sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1); + } + return 0; +} + +static void set_compress_new_inode(struct f2fs_sb_info *sbi, struct inode *dir, + struct inode *inode, const unsigned char *name) +{ + __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list; + unsigned char (*noext)[F2FS_EXTENSION_LEN] = + F2FS_OPTION(sbi).noextensions; + unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions; + unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; + unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; + int i, cold_count, hot_count; + + if (!f2fs_sb_has_compression(sbi)) + return; + + if (S_ISDIR(inode->i_mode)) + goto inherit_comp; + + /* This name comes only from normal files. */ + if (!name) + return; + + /* Don't compress hot files. */ + f2fs_down_read(&sbi->sb_lock); + cold_count = le32_to_cpu(sbi->raw_super->extension_count); + hot_count = sbi->raw_super->hot_ext_count; + for (i = cold_count; i < cold_count + hot_count; i++) + if (is_extension_exist(name, extlist[i], false)) + break; + f2fs_up_read(&sbi->sb_lock); + if (i < (cold_count + hot_count)) + return; + + /* Don't compress unallowed extension. */ + for (i = 0; i < noext_cnt; i++) + if (is_extension_exist(name, noext[i], false)) + return; + + /* Compress wanting extension. */ + for (i = 0; i < ext_cnt; i++) { + if (is_extension_exist(name, ext[i], false)) { + set_compress_context(inode); + return; + } + } +inherit_comp: + /* Inherit the {no-}compression flag in directory */ + if (F2FS_I(dir)->i_flags & F2FS_NOCOMP_FL) { + F2FS_I(inode)->i_flags |= F2FS_NOCOMP_FL; + f2fs_mark_inode_dirty_sync(inode, true); + } else if (F2FS_I(dir)->i_flags & F2FS_COMPR_FL) { + set_compress_context(inode); + } +} + static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns, - struct inode *dir, umode_t mode) + struct inode *dir, umode_t mode, + const char *name) { struct f2fs_sb_info *sbi = F2FS_I_SB(dir); nid_t ino; @@ -114,12 +269,8 @@ static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns, if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL) set_inode_flag(inode, FI_PROJ_INHERIT);

- if (f2fs_sb_has_compression(sbi)) { - /* Inherit the compression flag in directory */ - if ((F2FS_I(dir)->i_flags & F2FS_COMPR_FL) && - f2fs_may_compress(inode)) - set_compress_context(inode); - } + /* Check compression first. */ + set_compress_new_inode(sbi, dir, inode, name);

/* Should enable inline_data after compression set */ if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode)) @@ -153,40 +304,6 @@ static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns, return ERR_PTR(err); }

-static inline int is_extension_exist(const unsigned char *s, const char *sub, - bool tmp_ext) -{ - size_t slen = strlen(s); - size_t sublen = strlen(sub); - int i; - - if (sublen == 1 && *sub == '*') - return 1; - - /* - * filename format of multimedia file should be defined as: - * "filename + '.' + extension + (optional: '.' + temp extension)". - */ - if (slen < sublen + 2) - return 0; - - if (!tmp_ext) { - /* file has no temp extension */ - if (s[slen - sublen - 1] != '.') - return 0; - return !strncasecmp(s + slen - sublen, sub, sublen); - } - - for (i = 1; i < slen - sublen; i++) { - if (s[i] != '.') - continue; - if (!strncasecmp(s + i + 1, sub, sublen)) - return 1; - } - - return 0; -} - /* * Set file's temperature for hot/cold data separation */ @@ -217,124 +334,6 @@ static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode * file_set_hot(inode); }

-int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name, - bool hot, bool set) -{ - __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list; - int cold_count = le32_to_cpu(sbi->raw_super->extension_count); - int hot_count = sbi->raw_super->hot_ext_count; - int total_count = cold_count + hot_count; - int start, count; - int i; - - if (set) { - if (total_count == F2FS_MAX_EXTENSION) - return -EINVAL; - } else { - if (!hot && !cold_count) - return -EINVAL; - if (hot && !hot_count) - return -EINVAL; - } - - if (hot) { - start = cold_count; - count = total_count; - } else { - start = 0; - count = cold_count; - } - - for (i = start; i < count; i++) { - if (strcmp(name, extlist[i])) - continue; - - if (set) - return -EINVAL; - - memcpy(extlist[i], extlist[i + 1], - F2FS_EXTENSION_LEN * (total_count - i - 1)); - memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN); - if (hot) - sbi->raw_super->hot_ext_count = hot_count - 1; - else - sbi->raw_super->extension_count = - cpu_to_le32(cold_count - 1); - return 0; - } - - if (!set) - return -EINVAL; - - if (hot) { - memcpy(extlist[count], name, strlen(name)); - sbi->raw_super->hot_ext_count = hot_count + 1; - } else { - char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN]; - - memcpy(buf, &extlist[cold_count], - F2FS_EXTENSION_LEN * hot_count); - memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN); - memcpy(extlist[cold_count], name, strlen(name)); - memcpy(&extlist[cold_count + 1], buf, - F2FS_EXTENSION_LEN * hot_count); - sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1); - } - return 0; -} - -static void set_compress_inode(struct f2fs_sb_info *sbi, struct inode *inode, - const unsigned char *name) -{ - __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list; - unsigned char (*noext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).noextensions; - unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions; - unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; - unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; - int i, cold_count, hot_count; - - if (!f2fs_sb_has_compression(sbi) || - F2FS_I(inode)->i_flags & F2FS_NOCOMP_FL || - !f2fs_may_compress(inode) || - (!ext_cnt && !noext_cnt)) - return; - - f2fs_down_read(&sbi->sb_lock); - - cold_count = le32_to_cpu(sbi->raw_super->extension_count); - hot_count = sbi->raw_super->hot_ext_count; - - for (i = cold_count; i < cold_count + hot_count; i++) { - if (is_extension_exist(name, extlist[i], false)) { - f2fs_up_read(&sbi->sb_lock); - return; - } - } - - f2fs_up_read(&sbi->sb_lock); - - for (i = 0; i < noext_cnt; i++) { - if (is_extension_exist(name, noext[i], false)) { - f2fs_disable_compressed_file(inode); - return; - } - } - - if (is_inode_flag_set(inode, FI_COMPRESSED_FILE)) - return; - - for (i = 0; i < ext_cnt; i++) { - if (!is_extension_exist(name, ext[i], false)) - continue; - - /* Do not use inline_data with compression */ - stat_dec_inline_inode(inode); - clear_inode_flag(inode, FI_INLINE_DATA); - set_compress_context(inode); - return; - } -} - static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir, struct dentry *dentry, umode_t mode, bool excl) { @@ -352,15 +351,13 @@ static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir, if (err) return err;

- inode = f2fs_new_inode(mnt_userns, dir, mode); + inode = f2fs_new_inode(mnt_userns, dir, mode, dentry->d_name.name); if (IS_ERR(inode)) return PTR_ERR(inode);

if (!test_opt(sbi, DISABLE_EXT_IDENTIFY)) set_file_temperature(sbi, inode, dentry->d_name.name);

- set_compress_inode(sbi, inode, dentry->d_name.name); - inode->i_op = &f2fs_file_inode_operations; inode->i_fop = &f2fs_file_operations; inode->i_mapping->a_ops = &f2fs_dblock_aops; @@ -689,7 +686,7 @@ static int f2fs_symlink(struct user_namespace *mnt_userns, struct inode *dir, if (err) return err;

- inode = f2fs_new_inode(mnt_userns, dir, S_IFLNK | S_IRWXUGO); + inode = f2fs_new_inode(mnt_userns, dir, S_IFLNK | S_IRWXUGO, NULL); if (IS_ERR(inode)) return PTR_ERR(inode);

@@ -760,7 +757,7 @@ static int f2fs_mkdir(struct user_namespace *mnt_userns, struct inode *dir, if (err) return err;

- inode = f2fs_new_inode(mnt_userns, dir, S_IFDIR | mode); + inode = f2fs_new_inode(mnt_userns, dir, S_IFDIR | mode, NULL); if (IS_ERR(inode)) return PTR_ERR(inode);

@@ -817,7 +814,7 @@ static int f2fs_mknod(struct user_namespace *mnt_userns, struct inode *dir, if (err) return err;

- inode = f2fs_new_inode(mnt_userns, dir, mode); + inode = f2fs_new_inode(mnt_userns, dir, mode, NULL); if (IS_ERR(inode)) return PTR_ERR(inode);

@@ -856,7 +853,7 @@ static int __f2fs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir, if (err) return err;

- inode = f2fs_new_inode(mnt_userns, dir, mode); + inode = f2fs_new_inode(mnt_userns, dir, mode, NULL); if (IS_ERR(inode)) return PTR_ERR(inode);