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f2fs: align f2fs maximum name length to linux based filesystem

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The maximum filename length supported in linux is 255 characters.
So let's follow that.

Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
This commit is contained in:
Jaegeuk Kim 2013-03-03 13:58:05 +09:00
commit 5a20d339c7
4 changed files with 14 additions and 10 deletions
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17
include/linux/f2fs_fs.h
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@ -139,7 +139,7 @@ struct f2fs_extent {
__le32 len; /* lengh of the extent */
} __packed;
#define F2FS_MAX_NAME_LEN 256
#define F2FS_NAME_LEN 255
#define ADDRS_PER_INODE 923 /* Address Pointers in an Inode */
#define ADDRS_PER_BLOCK 1018 /* Address Pointers in a Direct Block */
#define NIDS_PER_BLOCK 1018 /* Node IDs in an Indirect Block */
@ -165,7 +165,8 @@ struct f2fs_inode {
__le32 i_flags; /* file attributes */
__le32 i_pino; /* parent inode number */
__le32 i_namelen; /* file name length */
__u8 i_name[F2FS_MAX_NAME_LEN]; /* file name for SPOR */
__u8 i_name[F2FS_NAME_LEN]; /* file name for SPOR */
__u8 i_reserved2; /* for backward compatibility */
struct f2fs_extent i_ext; /* caching a largest extent */
@ -362,10 +363,10 @@ struct f2fs_summary_block {
typedef __le32 f2fs_hash_t;
/* One directory entry slot covers 8bytes-long file name */
#define F2FS_NAME_LEN 8
#define F2FS_NAME_LEN_BITS 3
#define F2FS_SLOT_LEN 8
#define F2FS_SLOT_LEN_BITS 3
#define GET_DENTRY_SLOTS(x) ((x + F2FS_NAME_LEN - 1) >> F2FS_NAME_LEN_BITS)
#define GET_DENTRY_SLOTS(x) ((x + F2FS_SLOT_LEN - 1) >> F2FS_SLOT_LEN_BITS)
/* the number of dentry in a block */
#define NR_DENTRY_IN_BLOCK 214
@ -377,10 +378,10 @@ typedef __le32 f2fs_hash_t;
#define SIZE_OF_DENTRY_BITMAP ((NR_DENTRY_IN_BLOCK + BITS_PER_BYTE - 1) / \
BITS_PER_BYTE)
#define SIZE_OF_RESERVED (PAGE_SIZE - ((SIZE_OF_DIR_ENTRY + \
F2FS_NAME_LEN) * \
F2FS_SLOT_LEN) * \
NR_DENTRY_IN_BLOCK + SIZE_OF_DENTRY_BITMAP))
/* One directory entry slot representing F2FS_NAME_LEN-sized file name */
/* One directory entry slot representing F2FS_SLOT_LEN-sized file name */
struct f2fs_dir_entry {
__le32 hash_code; /* hash code of file name */
__le32 ino; /* inode number */
@ -394,7 +395,7 @@ struct f2fs_dentry_block {
__u8 dentry_bitmap[SIZE_OF_DENTRY_BITMAP];
__u8 reserved[SIZE_OF_RESERVED];
struct f2fs_dir_entry dentry[NR_DENTRY_IN_BLOCK];
__u8 filename[NR_DENTRY_IN_BLOCK][F2FS_NAME_LEN];
__u8 filename[NR_DENTRY_IN_BLOCK][F2FS_SLOT_LEN];
} __packed;
/* file types used in inode_info->flags */