Dear Tien Fong Chee,
On Jul 13, 2016 at 11:01 AM, Tien Fong Chee wrote:
Single 64KB get_contents_vfatname_block global variable would be used for all FAT implementation instead of allocating additional two global variables which are get_denfromdir_block and do_fat_read_at_block. This implementation can help in saving up 128KB memory space.
Signed-off-by: Tien Fong Chee tfchee@altera.com Cc: Dinh Nguyen dinguyen@opensource.altera.com Cc: Dinh Nguyen dinh.linux@gmail.com Cc: ChinLiang clsee@altera.com Cc: Vagrant Cascadian vagrant@debian.org Cc: Simon Glass sjg@chromium.org Cc: Stephen Warren swarren@nvidia.com Cc: Benoît Thébaudeau benoit@wsystem.com
fs/fat/fat.c | 6 ++---- 1 files changed, 2 insertions(+), 4 deletions(-)
diff --git a/fs/fat/fat.c b/fs/fat/fat.c index 826bd85..5d1afe6 100644 --- a/fs/fat/fat.c +++ b/fs/fat/fat.c @@ -579,8 +579,7 @@ static __u8 mkcksum(const char name[8], const char ext[3])
- Get the directory entry associated with 'filename' from the directory
- starting at 'startsect'
*/ -__u8 get_dentfromdir_block[MAX_CLUSTSIZE]
- __aligned(ARCH_DMA_MINALIGN);
+__u8 *get_dentfromdir_block = get_contents_vfatname_block;
static dir_entry *get_dentfromdir(fsdata *mydata, int startsect, char *filename, dir_entry *retdent, @@ -811,8 +810,7 @@ exit: return ret; }
-__u8 do_fat_read_at_block[MAX_CLUSTSIZE]
- __aligned(ARCH_DMA_MINALIGN);
+__u8 *do_fat_read_at_block = get_contents_vfatname_block;
int do_fat_read_at(const char *filename, loff_t pos, void *buffer, loff_t maxsize, int dols, int dogetsize, loff_t *size)
This probably breaks at least fat_write.c, which uses: memcpy(get_dentfromdir_block, get_contents_vfatname_block,
Best regards, Benoît