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Message-ID: <20241006011956.373622-2-linux@treblig.org>
Date: Sun, 6 Oct 2024 02:19:52 +0100
From: linux@...blig.org
To: xiubli@...hat.com,
idryomov@...il.com,
ceph-devel@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
"Dr. David Alan Gilbert" <linux@...blig.org>
Subject: [PATCH 1/5] libceph: Remove unused ceph_pagelist functions
From: "Dr. David Alan Gilbert" <linux@...blig.org>
ceph_pagelist_truncate() and ceph_pagelist_set_cursor() have been unused
since commit
39be95e9c8c0 ("ceph: ceph_pagelist_append might sleep while atomic")
Remove them.
Signed-off-by: Dr. David Alan Gilbert <linux@...blig.org>
---
include/linux/ceph/pagelist.h | 12 -----------
net/ceph/pagelist.c | 38 -----------------------------------
2 files changed, 50 deletions(-)
diff --git a/include/linux/ceph/pagelist.h b/include/linux/ceph/pagelist.h
index 5dead8486fd8..879bec0863aa 100644
--- a/include/linux/ceph/pagelist.h
+++ b/include/linux/ceph/pagelist.h
@@ -17,12 +17,6 @@ struct ceph_pagelist {
refcount_t refcnt;
};
-struct ceph_pagelist_cursor {
- struct ceph_pagelist *pl; /* pagelist, for error checking */
- struct list_head *page_lru; /* page in list */
- size_t room; /* room remaining to reset to */
-};
-
struct ceph_pagelist *ceph_pagelist_alloc(gfp_t gfp_flags);
extern void ceph_pagelist_release(struct ceph_pagelist *pl);
@@ -33,12 +27,6 @@ extern int ceph_pagelist_reserve(struct ceph_pagelist *pl, size_t space);
extern int ceph_pagelist_free_reserve(struct ceph_pagelist *pl);
-extern void ceph_pagelist_set_cursor(struct ceph_pagelist *pl,
- struct ceph_pagelist_cursor *c);
-
-extern int ceph_pagelist_truncate(struct ceph_pagelist *pl,
- struct ceph_pagelist_cursor *c);
-
static inline int ceph_pagelist_encode_64(struct ceph_pagelist *pl, u64 v)
{
__le64 ev = cpu_to_le64(v);
diff --git a/net/ceph/pagelist.c b/net/ceph/pagelist.c
index 74622b278d57..5a9c4be5f222 100644
--- a/net/ceph/pagelist.c
+++ b/net/ceph/pagelist.c
@@ -131,41 +131,3 @@ int ceph_pagelist_free_reserve(struct ceph_pagelist *pl)
return 0;
}
EXPORT_SYMBOL(ceph_pagelist_free_reserve);
-
-/* Create a truncation point. */
-void ceph_pagelist_set_cursor(struct ceph_pagelist *pl,
- struct ceph_pagelist_cursor *c)
-{
- c->pl = pl;
- c->page_lru = pl->head.prev;
- c->room = pl->room;
-}
-EXPORT_SYMBOL(ceph_pagelist_set_cursor);
-
-/* Truncate a pagelist to the given point. Move extra pages to reserve.
- * This won't sleep.
- * Returns: 0 on success,
- * -EINVAL if the pagelist doesn't match the trunc point pagelist
- */
-int ceph_pagelist_truncate(struct ceph_pagelist *pl,
- struct ceph_pagelist_cursor *c)
-{
- struct page *page;
-
- if (pl != c->pl)
- return -EINVAL;
- ceph_pagelist_unmap_tail(pl);
- while (pl->head.prev != c->page_lru) {
- page = list_entry(pl->head.prev, struct page, lru);
- /* move from pagelist to reserve */
- list_move_tail(&page->lru, &pl->free_list);
- ++pl->num_pages_free;
- }
- pl->room = c->room;
- if (!list_empty(&pl->head)) {
- page = list_entry(pl->head.prev, struct page, lru);
- pl->mapped_tail = kmap(page);
- }
- return 0;
-}
-EXPORT_SYMBOL(ceph_pagelist_truncate);
--
2.46.2
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