linux-kernel - [PATCH 15/17] sysv: convert dir_get_page to read_kmap

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Message-Id: <20070412024938.27380.22802.patchbomb.py@localhost>
Date:	Wed, 11 Apr 2007 19:49:38 -0700
From:	Nate Diller <nate.diller@...il.com>
To:	Andrew Morton <akpm@...l.org>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Christoph Hellwig <hch@...radead.org>,
	Roman Zippel <zippel@...ux-m68k.org>,
	Mikulas Patocka <mikulas@...ax.karlin.mff.cuni.cz>,
	David Woodhouse <dwmw2@...radead.org>,
	Dave Kleikamp <shaggy@...tin.ibm.com>,
	Anton Altaparmakov <aia21@...tab.net>,
	Evgeniy Dushistov <dushistov@...l.ru>
Cc:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	reiserfs-dev@...esys.com
Subject: [PATCH 15/17] sysv: convert dir_get_page to read_kmap_page

Replace sysv dir_get_page() with the new read_kmap_page().

Signed-off-by: Nate Diller <nate.diller@...il.com>

---

diff -urpN -X dontdiff linux-2.6.21-rc5-mm4/fs/sysv/dir.c linux-2.6.21-rc5-mm4-test/fs/sysv/dir.c
--- linux-2.6.21-rc5-mm4/fs/sysv/dir.c	2007-04-05 17:14:25.000000000 -0700
+++ linux-2.6.21-rc5-mm4-test/fs/sysv/dir.c	2007-04-06 01:59:19.000000000 -0700
@@ -50,15 +50,6 @@ static int dir_commit_chunk(struct page 
 	return err;
 }
 
-static struct page * dir_get_page(struct inode *dir, unsigned long n)
-{
-	struct address_space *mapping = dir->i_mapping;
-	struct page *page = read_mapping_page(mapping, n, NULL);
-	if (!IS_ERR(page))
-		kmap(page);
-	return page;
-}
-
 static int sysv_readdir(struct file * filp, void * dirent, filldir_t filldir)
 {
 	unsigned long pos = filp->f_pos;
@@ -77,7 +68,7 @@ static int sysv_readdir(struct file * fi
 	for ( ; n < npages; n++, offset = 0) {
 		char *kaddr, *limit;
 		struct sysv_dir_entry *de;
-		struct page *page = dir_get_page(inode, n);
+		struct page *page = read_kmap_page(inode->i_mapping, n);
 
 		if (IS_ERR(page))
 			continue;
@@ -149,7 +140,7 @@ struct sysv_dir_entry *sysv_find_entry(s
 
 	do {
 		char *kaddr;
-		page = dir_get_page(dir, n);
+		page = read_kmap_page(dir->i_mapping, n);
 		if (!IS_ERR(page)) {
 			kaddr = (char*)page_address(page);
 			de = (struct sysv_dir_entry *) kaddr;
@@ -191,7 +182,7 @@ int sysv_add_link(struct dentry *dentry,
 
 	/* We take care of directory expansion in the same loop */
 	for (n = 0; n <= npages; n++) {
-		page = dir_get_page(dir, n);
+		page = read_kmap_page(dir->i_mapping, n);
 		err = PTR_ERR(page);
 		if (IS_ERR(page))
 			goto out;
@@ -299,7 +290,7 @@ int sysv_empty_dir(struct inode * inode)
 	for (i = 0; i < npages; i++) {
 		char *kaddr;
 		struct sysv_dir_entry * de;
-		page = dir_get_page(inode, i);
+		page = read_kmap_page(inode->i_mapping, i);
 
 		if (IS_ERR(page))
 			continue;
@@ -353,7 +344,7 @@ void sysv_set_link(struct sysv_dir_entry
 
 struct sysv_dir_entry * sysv_dotdot (struct inode *dir, struct page **p)
 {
-	struct page *page = dir_get_page(dir, 0);
+	struct page *page = read_kmap_page(dir->i_mapping, 0);
 	struct sysv_dir_entry *de = NULL;
 
 	if (!IS_ERR(page)) {
-
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