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author | Sascha Hauer <s.hauer@pengutronix.de> | 2018-09-07 14:36:26 +0200 |
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committer | Richard Weinberger <richard@nod.at> | 2018-10-23 13:48:17 +0200 |
commit | 0e26b6e2551e21df72c140e46819523e1b686009 (patch) | |
tree | 10704f3951b94efcd5cad1cba250afd8d0920564 /fs/ubifs | |
parent | 22ceaa8c688d0c8a6fc6eb7ebf32c01914220d0a (diff) | |
download | linux-stable-0e26b6e2551e21df72c140e46819523e1b686009.tar.gz linux-stable-0e26b6e2551e21df72c140e46819523e1b686009.tar.bz2 linux-stable-0e26b6e2551e21df72c140e46819523e1b686009.zip |
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@pengutronix.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'fs/ubifs')
-rw-r--r-- | fs/ubifs/lpt.c | 32 | ||||
-rw-r--r-- | fs/ubifs/lpt_commit.c | 40 | ||||
-rw-r--r-- | 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 31393370e334..ed0c67fe7500 100644 --- a/fs/ubifs/lpt.c +++ b/fs/ubifs/lpt.c @@ -1439,6 +1439,38 @@ struct ubifs_pnode *ubifs_get_pnode(struct ubifs_info *c, } /** + * 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 * @lnum: LEB number to lookup diff --git a/fs/ubifs/lpt_commit.c b/fs/ubifs/lpt_commit.c index 7ce30994bbba..62d6a87d4f5d 100644 --- a/fs/ubifs/lpt_commit.c +++ b/fs/ubifs/lpt_commit.c @@ -619,38 +619,6 @@ static struct ubifs_pnode *next_pnode_to_dirty(struct ubifs_info *c, } /** - * 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 * @pnode: pnode for which to add dirt @@ -702,7 +670,7 @@ 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); @@ -956,7 +924,7 @@ 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]; @@ -1558,7 +1526,7 @@ 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]; @@ -1710,7 +1678,7 @@ 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 4368cde476b0..306cc7a4f725 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -1712,6 +1712,7 @@ 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); |