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btrfs: constify ulist parameter of ulist_next() 

The ulist_next() iterator function does not need to change the given ulist
so make it const. This will allow the next patch in the series to pass a
ulist to a function that does not need, and should not, modify the ulist.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Filipe Manana 2022-11-01 16:15:49 +00:00 committed by David Sterba
parent 1baea6f18a
commit fa104a8790
2 changed files with 2 additions and 2 deletions
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2
fs/btrfs/ulist.c
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@ -266,7 +266,7 @@ int ulist_del(struct ulist *ulist, u64 val, u64 aux)
* It is allowed to call ulist_add during an enumeration. Newly added items
* are guaranteed to show up in the running enumeration.
*/
struct ulist_node *ulist_next(struct ulist *ulist, struct ulist_iterator *uiter)
struct ulist_node *ulist_next(const struct ulist *ulist, struct ulist_iterator *uiter)
{
struct ulist_node *node;

2
fs/btrfs/ulist.h
View File

@ -66,7 +66,7 @@ static inline int ulist_add_merge_ptr(struct ulist *ulist, u64 val, void *aux,
#endif
}
struct ulist_node *ulist_next(struct ulist *ulist,
struct ulist_node *ulist_next(const struct ulist *ulist,
struct ulist_iterator *uiter);
#define ULIST_ITER_INIT(uiter) ((uiter)->cur_list = NULL)