jffs2: Remove jffs2_gc_fetch_page and jffs2_gc_release_page

Merge these two helpers into the only callers to get rid of some
amazingly bad calling conventions.

Suggested-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Richard Weinberger <richard@nod.at>

diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c
index 8a20ddd..a3193c0 100644 (file)
--- a/fs/jffs2/fs.c
+++ b/fs/jffs2/fs.c
@@ -678,33 +678,6 @@ struct jffs2_inode_info *jffs2_gc_fetch_inode(struct jffs2_sb_info *c,
        return JFFS2_INODE_INFO(inode);
 }
 
-unsigned char *jffs2_gc_fetch_page(struct jffs2_sb_info *c,
-                                  struct jffs2_inode_info *f,
-                                  unsigned long offset,
-                                  unsigned long *priv)
-{
-       struct inode *inode = OFNI_EDONI_2SFFJ(f);
-       struct page *pg;
-
-       pg = read_cache_page(inode->i_mapping, offset >> PAGE_SHIFT,
-                            jffs2_do_readpage_unlock, inode);
-       if (IS_ERR(pg))
-               return (void *)pg;
-
-       *priv = (unsigned long)pg;
-       return kmap(pg);
-}
-
-void jffs2_gc_release_page(struct jffs2_sb_info *c,
-                          unsigned char *ptr,
-                          unsigned long *priv)
-{
-       struct page *pg = (void *)*priv;
-
-       kunmap(pg);
-       put_page(pg);
-}
-
 static int jffs2_flash_setup(struct jffs2_sb_info *c) {
        int ret = 0;
 

diff --git a/fs/jffs2/gc.c b/fs/jffs2/gc.c
index 9ed0f26..373b3b7 100644 (file)
--- a/fs/jffs2/gc.c
+++ b/fs/jffs2/gc.c
@@ -1165,12 +1165,13 @@ static int jffs2_garbage_collect_dnode(struct jffs2_sb_info *c, struct jffs2_era
                                       struct jffs2_inode_info *f, struct jffs2_full_dnode *fn,
                                       uint32_t start, uint32_t end)
 {
+       struct inode *inode = OFNI_EDONI_2SFFJ(f);
        struct jffs2_full_dnode *new_fn;
        struct jffs2_raw_inode ri;
        uint32_t alloclen, offset, orig_end, orig_start;
        int ret = 0;
        unsigned char *comprbuf = NULL, *writebuf;
-       unsigned long pg;
+       struct page *page;
        unsigned char *pg_ptr;
 
        memset(&ri, 0, sizeof(ri));
@@ -1325,15 +1326,18 @@ static int jffs2_garbage_collect_dnode(struct jffs2_sb_info *c, struct jffs2_era
         * end up here trying to GC the *same* page that jffs2_write_begin() is
         * trying to write out, read_cache_page() will not deadlock. */
        mutex_unlock(&f->sem);
-       pg_ptr = jffs2_gc_fetch_page(c, f, start, &pg);
-       mutex_lock(&f->sem);
-
-       if (IS_ERR(pg_ptr)) {
+       page = read_cache_page(inode->i_mapping, start >> PAGE_SHIFT,
+                              jffs2_do_readpage_unlock, inode);
+       if (IS_ERR(page)) {
                pr_warn("read_cache_page() returned error: %ld\n",
-                       PTR_ERR(pg_ptr));
-               return PTR_ERR(pg_ptr);
+                       PTR_ERR(page));
+               mutex_lock(&f->sem);
+               return PTR_ERR(page);
        }
 
+       pg_ptr = kmap(page);
+       mutex_lock(&f->sem);
+
        offset = start;
        while(offset < orig_end) {
                uint32_t datalen;
@@ -1396,6 +1400,7 @@ static int jffs2_garbage_collect_dnode(struct jffs2_sb_info *c, struct jffs2_era
                }
        }
 
-       jffs2_gc_release_page(c, pg_ptr, &pg);
+       kunmap(page);
+       put_page(page);
        return ret;
 }

diff --git a/fs/jffs2/os-linux.h b/fs/jffs2/os-linux.h
index bd3d5f0..f4895dd 100644 (file)
--- a/fs/jffs2/os-linux.h
+++ b/fs/jffs2/os-linux.h
@@ -183,9 +183,6 @@ unsigned char *jffs2_gc_fetch_page(struct jffs2_sb_info *c,
                                   struct jffs2_inode_info *f,
                                   unsigned long offset,
                                   unsigned long *priv);
-void jffs2_gc_release_page(struct jffs2_sb_info *c,
-                          unsigned char *pg,
-                          unsigned long *priv);
 void jffs2_flash_cleanup(struct jffs2_sb_info *c);