hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

fs/adfs: newdir: clean up adfs_f_update() 

__adfs_dir_put() and adfs_dir_find_entry() are only called from
adfs_f_update(), so move them into this function, removing some
unnecessary entry copying by doing so.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Russell King 2019-12-09 11:10:42 +00:00 committed by Al Viro
parent 9318731bec
commit cc625ccd0e
1 changed files with 24 additions and 49 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

73
fs/adfs/dir_f.c
View File

@ -229,46 +229,6 @@ __adfs_dir_get(struct adfs_dir *dir, int pos, struct object_info *obj)
return 0;
}
static int
__adfs_dir_put(struct adfs_dir *dir, int pos, struct object_info *obj)
{
struct adfs_direntry de;
int ret;
ret = adfs_dir_copyfrom(&de, dir, pos, 26);
if (ret)
return ret;
adfs_obj2dir(&de, obj);
return adfs_dir_copyto(dir, pos, &de, 26);
}
/*
* the caller is responsible for holding the necessary
* locks.
*/
static int adfs_dir_find_entry(struct adfs_dir *dir, u32 indaddr)
{
int pos, ret;
ret = -ENOENT;
for (pos = 5; pos < ADFS_NUM_DIR_ENTRIES * 26 + 5; pos += 26) {
struct object_info obj;
if (!__adfs_dir_get(dir, pos, &obj))
break;
if (obj.indaddr == indaddr) {
ret = pos;
break;
}
}
return ret;
}
static int
adfs_f_setpos(struct adfs_dir *dir, unsigned int fpos)
{
@ -308,18 +268,33 @@ static int adfs_f_iterate(struct adfs_dir *dir, struct dir_context *ctx)
return 0;
}
static int
adfs_f_update(struct adfs_dir *dir, struct object_info *obj)
static int adfs_f_update(struct adfs_dir *dir, struct object_info *obj)
{
int ret;
struct adfs_direntry de;
int offset, ret;
ret = adfs_dir_find_entry(dir, obj->indaddr);
if (ret < 0) {
adfs_error(dir->sb, "unable to locate entry to update");
offset = 5 - (int)sizeof(de);
do {
offset += sizeof(de);
ret = adfs_dir_copyfrom(&de, dir, offset, sizeof(de));
if (ret) {
adfs_error(dir->sb, "error reading directory entry");
return -ENOENT;
}
if (!de.dirobname[0]) {
adfs_error(dir->sb, "unable to locate entry to update");
return -ENOENT;
}
} while (adfs_readval(de.dirinddiscadd, 3) != obj->indaddr);
/* Update the directory entry with the new object state */
adfs_obj2dir(&de, obj);
/* Write the directory entry back to the directory */
ret = adfs_dir_copyto(dir, pos, &de, 26);
if (ret)
return ret;
}
__adfs_dir_put(dir, ret, obj);
/*
* Increment directory sequence number