From e215772cd2abcf33adad8857c0f5a8214a6e7d22 Mon Sep 17 00:00:00 2001 From: "Misono, Tomohiro" Date: Thu, 14 Dec 2017 17:28:00 +0900 Subject: [PATCH] btrfs: cleanup unnecessary string dup in btrfs_parse_options() Long ago, commit edf24abe51493 ("btrfs: sanity mount option parsing and early mount code") split the btrfs_parse_options() into two parts (btrfs_parse_early_options() and btrfs_parse_options()). As a result, btrfs_parse_optins no longer gets called twice and is the last one to parse mount option string. Therefore there is no need to dup it. Signed-off-by: Tomohiro Misono Reviewed-by: David Sterba Signed-off-by: David Sterba --- fs/btrfs/super.c | 13 +------------ 1 file changed, 1 insertion(+), 12 deletions(-) diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 03367a64b5c1..1d33744a9326 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -414,7 +414,7 @@ int btrfs_parse_options(struct btrfs_fs_info *info, char *options, unsigned long new_flags) { substring_t args[MAX_OPT_ARGS]; - char *p, *num, *orig = NULL; + char *p, *num; u64 cache_gen; int intarg; int ret = 0; @@ -437,16 +437,6 @@ int btrfs_parse_options(struct btrfs_fs_info *info, char *options, if (!options) goto check; - /* - * strsep changes the string, duplicate it because parse_options - * gets called twice - */ - options = kstrdup(options, GFP_KERNEL); - if (!options) - return -ENOMEM; - - orig = options; - while ((p = strsep(&options, ",")) != NULL) { int token; if (!*p) @@ -887,7 +877,6 @@ int btrfs_parse_options(struct btrfs_fs_info *info, char *options, btrfs_info(info, "disk space caching is enabled"); if (!ret && btrfs_test_opt(info, FREE_SPACE_TREE)) btrfs_info(info, "using free space tree"); - kfree(orig); return ret; }