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Message-Id: <20180704124137.13396-5-s.hauer@pengutronix.de>
Date: Wed, 4 Jul 2018 14:41:16 +0200
From: Sascha Hauer <s.hauer@...gutronix.de>
To: linux-mtd@...ts.infradead.org
Cc: David Gstir <david@...ma-star.at>,
Richard Weinberger <richard@....at>, kernel@...gutronix.de,
linux-kernel@...r.kernel.org, Sascha Hauer <s.hauer@...gutronix.de>
Subject: [PATCH 04/25] ubifs: export pnode_lookup as ubifs_pnode_lookup
ubifs_lpt_lookup could be implemented using pnode_lookup. To make that
possible move pnode_lookup from lpt.c to lpt_commit.c. Rename it to
ubifs_pnode_lookup since it's now exported.
Signed-off-by: Sascha Hauer <s.hauer@...gutronix.de>
---
fs/ubifs/lpt.c | 32 ++++++++++++++++++++++++++++++++
fs/ubifs/lpt_commit.c | 40 ++++------------------------------------
fs/ubifs/ubifs.h | 1 +
3 files changed, 37 insertions(+), 36 deletions(-)
diff --git a/fs/ubifs/lpt.c b/fs/ubifs/lpt.c
index 8e99dad18880..6cd6f23d4512 100644
--- a/fs/ubifs/lpt.c
+++ b/fs/ubifs/lpt.c
@@ -1436,6 +1436,38 @@ struct ubifs_pnode *ubifs_get_pnode(struct ubifs_info *c,
return branch->pnode;
}
+/**
+ * ubifs_pnode_lookup - lookup a pnode in the LPT.
+ * @c: UBIFS file-system description object
+ * @i: pnode number (0 to (main_lebs - 1) / UBIFS_LPT_FANOUT)
+ *
+ * This function returns a pointer to the pnode on success or a negative
+ * error code on failure.
+ */
+struct ubifs_pnode *ubifs_pnode_lookup(struct ubifs_info *c, int i)
+{
+ int err, h, iip, shft;
+ struct ubifs_nnode *nnode;
+
+ if (!c->nroot) {
+ err = ubifs_read_nnode(c, NULL, 0);
+ if (err)
+ return ERR_PTR(err);
+ }
+ i <<= UBIFS_LPT_FANOUT_SHIFT;
+ nnode = c->nroot;
+ shft = c->lpt_hght * UBIFS_LPT_FANOUT_SHIFT;
+ for (h = 1; h < c->lpt_hght; h++) {
+ iip = ((i >> shft) & (UBIFS_LPT_FANOUT - 1));
+ shft -= UBIFS_LPT_FANOUT_SHIFT;
+ nnode = ubifs_get_nnode(c, nnode, iip);
+ if (IS_ERR(nnode))
+ return ERR_CAST(nnode);
+ }
+ iip = ((i >> shft) & (UBIFS_LPT_FANOUT - 1));
+ return ubifs_get_pnode(c, nnode, iip);
+}
+
/**
* ubifs_lpt_lookup - lookup LEB properties in the LPT.
* @c: UBIFS file-system description object
diff --git a/fs/ubifs/lpt_commit.c b/fs/ubifs/lpt_commit.c
index 78da65b2fb85..14e72d09b6b3 100644
--- a/fs/ubifs/lpt_commit.c
+++ b/fs/ubifs/lpt_commit.c
@@ -616,38 +616,6 @@ static struct ubifs_pnode *next_pnode_to_dirty(struct ubifs_info *c,
return ubifs_get_pnode(c, nnode, iip);
}
-/**
- * pnode_lookup - lookup a pnode in the LPT.
- * @c: UBIFS file-system description object
- * @i: pnode number (0 to (main_lebs - 1) / UBIFS_LPT_FANOUT))
- *
- * This function returns a pointer to the pnode on success or a negative
- * error code on failure.
- */
-static struct ubifs_pnode *pnode_lookup(struct ubifs_info *c, int i)
-{
- int err, h, iip, shft;
- struct ubifs_nnode *nnode;
-
- if (!c->nroot) {
- err = ubifs_read_nnode(c, NULL, 0);
- if (err)
- return ERR_PTR(err);
- }
- i <<= UBIFS_LPT_FANOUT_SHIFT;
- nnode = c->nroot;
- shft = c->lpt_hght * UBIFS_LPT_FANOUT_SHIFT;
- for (h = 1; h < c->lpt_hght; h++) {
- iip = ((i >> shft) & (UBIFS_LPT_FANOUT - 1));
- shft -= UBIFS_LPT_FANOUT_SHIFT;
- nnode = ubifs_get_nnode(c, nnode, iip);
- if (IS_ERR(nnode))
- return ERR_CAST(nnode);
- }
- iip = ((i >> shft) & (UBIFS_LPT_FANOUT - 1));
- return ubifs_get_pnode(c, nnode, iip);
-}
-
/**
* add_pnode_dirt - add dirty space to LPT LEB properties.
* @c: UBIFS file-system description object
@@ -700,7 +668,7 @@ static int make_tree_dirty(struct ubifs_info *c)
{
struct ubifs_pnode *pnode;
- pnode = pnode_lookup(c, 0);
+ pnode = ubifs_pnode_lookup(c, 0);
if (IS_ERR(pnode))
return PTR_ERR(pnode);
@@ -954,7 +922,7 @@ static int make_pnode_dirty(struct ubifs_info *c, int node_num, int lnum,
struct ubifs_pnode *pnode;
struct ubifs_nbranch *branch;
- pnode = pnode_lookup(c, node_num);
+ pnode = ubifs_pnode_lookup(c, node_num);
if (IS_ERR(pnode))
return PTR_ERR(pnode);
branch = &pnode->parent->nbranch[pnode->iip];
@@ -1556,7 +1524,7 @@ static int dbg_is_pnode_dirty(struct ubifs_info *c, int lnum, int offs)
struct ubifs_nbranch *branch;
cond_resched();
- pnode = pnode_lookup(c, i);
+ pnode = ubifs_pnode_lookup(c, i);
if (IS_ERR(pnode))
return PTR_ERR(pnode);
branch = &pnode->parent->nbranch[pnode->iip];
@@ -1708,7 +1676,7 @@ int dbg_check_ltab(struct ubifs_info *c)
for (i = 0; i < cnt; i++) {
struct ubifs_pnode *pnode;
- pnode = pnode_lookup(c, i);
+ pnode = ubifs_pnode_lookup(c, i);
if (IS_ERR(pnode))
return PTR_ERR(pnode);
cond_resched();
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h
index 04bf84d71e7b..83c5e75ed3b6 100644
--- a/fs/ubifs/ubifs.h
+++ b/fs/ubifs/ubifs.h
@@ -1695,6 +1695,7 @@ struct ubifs_pnode *ubifs_get_pnode(struct ubifs_info *c,
struct ubifs_nnode *parent, int iip);
struct ubifs_nnode *ubifs_get_nnode(struct ubifs_info *c,
struct ubifs_nnode *parent, int iip);
+struct ubifs_pnode *ubifs_pnode_lookup(struct ubifs_info *c, int i);
int ubifs_read_nnode(struct ubifs_info *c, struct ubifs_nnode *parent, int iip);
void ubifs_add_lpt_dirt(struct ubifs_info *c, int lnum, int dirty);
void ubifs_add_nnode_dirt(struct ubifs_info *c, struct ubifs_nnode *nnode);
--
2.18.0
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