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authorRussell King <rmk+kernel@armlinux.org.uk>2019-12-09 14:10:42 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2020-01-21 04:12:42 +0300
commitcc625ccd0e6c2804cd0935743e3b51121a712562 (patch)
tree477a885d36d17223a9e075408accfb5785bce036 /fs/adfs
parent9318731bec8d38bdbe701d395cf103157046831d (diff)
downloadlinux-cc625ccd0e6c2804cd0935743e3b51121a712562.tar.xz
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>
Diffstat (limited to 'fs/adfs')
-rw-r--r--fs/adfs/dir_f.c73
1 files changed, 24 insertions, 49 deletions
diff --git a/fs/adfs/dir_f.c b/fs/adfs/dir_f.c
index dbb4f1ef7bb7..36cfadb2b893 100644
--- a/fs/adfs/dir_f.c
+++ b/fs/adfs/dir_f.c
@@ -230,46 +230,6 @@ __adfs_dir_get(struct adfs_dir *dir, int pos, struct object_info *obj)
}
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)
{
if (fpos >= ADFS_NUM_DIR_ENTRIES)
@@ -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");
- return ret;
- }
+ 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);
- __adfs_dir_put(dir, ret, obj);
+ /* Write the directory entry back to the directory */
+ ret = adfs_dir_copyto(dir, pos, &de, 26);
+ if (ret)
+ return ret;
/*
* Increment directory sequence number