diff options
Diffstat (limited to 'fs/f2fs/super.c')
| -rw-r--r-- | fs/f2fs/super.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 5c0b2b300aa1..d4a76c2deb80 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -540,6 +540,29 @@ static int f2fs_set_test_dummy_encryption(struct super_block *sb, } #ifdef CONFIG_F2FS_FS_COMPRESSION +static bool is_compress_extension_exist(struct f2fs_sb_info *sbi, + const char *new_ext, bool is_ext) +{ + unsigned char (*ext)[F2FS_EXTENSION_LEN]; + int ext_cnt; + int i; + + if (is_ext) { + ext = F2FS_OPTION(sbi).extensions; + ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; + } else { + ext = F2FS_OPTION(sbi).noextensions; + ext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; + } + + for (i = 0; i < ext_cnt; i++) { + if (!strcasecmp(new_ext, ext[i])) + return true; + } + + return false; +} + /* * 1. The same extension name cannot not appear in both compress and non-compress extension * at the same time. @@ -1154,6 +1177,11 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount) return -EINVAL; } + if (is_compress_extension_exist(sbi, name, true)) { + kfree(name); + break; + } + strcpy(ext[ext_cnt], name); F2FS_OPTION(sbi).compress_ext_cnt++; kfree(name); @@ -1178,6 +1206,11 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount) return -EINVAL; } + if (is_compress_extension_exist(sbi, name, false)) { + kfree(name); + break; + } + strcpy(noext[noext_cnt], name); F2FS_OPTION(sbi).nocompress_ext_cnt++; kfree(name); |