From 29cb951e8ca6a9feecd920da31af9f18918057fe Mon Sep 17 00:00:00 2001 From: Daniel Palmer Date: Wed, 11 Mar 2026 07:06:18 +0900 Subject: fs: fat: Refactor dirty flag handling Refactor the dirty flag handling a little bit so an inline function is called instead of directly stuffing a value into the variable. This allows variable that holds the flag to be completely removed if its not used i.e. CONFIG_FAT_WIRTE=n Signed-off-by: Daniel Palmer --- include/fat.h | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'include') diff --git a/include/fat.h b/include/fat.h index bdf430f7067..40da0370a44 100644 --- a/include/fat.h +++ b/include/fat.h @@ -165,7 +165,9 @@ typedef struct { int fatsize; /* Size of FAT in bits */ __u32 fatlength; /* Length of FAT in sectors */ __u16 fat_sect; /* Starting sector of the FAT */ +#ifdef CONFIG_FAT_WRITE __u8 fat_dirty; /* Set if fatbuf has been modified */ +#endif __u32 rootdir_sect; /* Start sector of root directory */ __u16 sect_size; /* Size of sectors in bytes */ __u16 clust_size; /* Size of clusters in sectors */ @@ -190,6 +192,30 @@ static inline u32 sect_to_clust(fsdata *fsdata, int sect) return (sect - fsdata->data_begin) / fsdata->clust_size; } +static inline void fat_mark_clean(fsdata *fsdata) +{ +#ifdef CONFIG_FAT_WRITE + fsdata->fat_dirty = 0; +#endif +} + +static inline void fat_mark_dirty(fsdata *fsdata) +{ +#ifdef CONFIG_FAT_WRITE + fsdata->fat_dirty = 1; +#endif +} + +static inline bool fat_is_dirty(fsdata *fsdata) +{ +#ifdef CONFIG_FAT_WRITE + if (fsdata->fat_dirty) + return true; +#endif + + return false; +} + int file_fat_detectfs(void); int fat_exists(const char *filename); int fat_size(const char *filename, loff_t *size); -- cgit v1.2.3