diff options
| -rw-r--r-- | fs/dcache.c | 6 | ||||
| -rw-r--r-- | include/linux/list.h | 12 |
2 files changed, 15 insertions, 3 deletions
diff --git a/fs/dcache.c b/fs/dcache.c index 5cdd14e95858..42d290be0ac1 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -553,18 +553,18 @@ void shrink_dcache_sb(struct super_block * sb) * superblock to the most recent end of the unused list. */ spin_lock(&dcache_lock); - list_for_each_safe(tmp, next, &dentry_unused) { + list_for_each_prev_safe(tmp, next, &dentry_unused) { dentry = list_entry(tmp, struct dentry, d_lru); if (dentry->d_sb != sb) continue; - list_move(tmp, &dentry_unused); + list_move_tail(tmp, &dentry_unused); } /* * Pass two ... free the dentries for this superblock. */ repeat: - list_for_each_safe(tmp, next, &dentry_unused) { + list_for_each_prev_safe(tmp, next, &dentry_unused) { dentry = list_entry(tmp, struct dentry, d_lru); if (dentry->d_sb != sb) continue; diff --git a/include/linux/list.h b/include/linux/list.h index ad9dcb9e3375..b0cf0135fe3e 100644 --- a/include/linux/list.h +++ b/include/linux/list.h @@ -478,6 +478,18 @@ static inline void list_splice_init_rcu(struct list_head *list, pos = n, n = pos->next) /** + * list_for_each_prev_safe - iterate over a list backwards safe against removal + of list entry + * @pos: the &struct list_head to use as a loop cursor. + * @n: another &struct list_head to use as temporary storage + * @head: the head for your list. + */ +#define list_for_each_prev_safe(pos, n, head) \ + for (pos = (head)->prev, n = pos->prev; \ + prefetch(pos->prev), pos != (head); \ + pos = n, n = pos->prev) + +/** * list_for_each_entry - iterate over list of given type * @pos: the type * to use as a loop cursor. * @head: the head for your list. |