From a9885444f7ff6e9156adb1adf5558ded9a39ad0a Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 24 Aug 2008 07:28:39 -0400 Subject: [PATCH] [PATCH] get rid of on-stack dentry in ext2_get_parent() Signed-off-by: Al Viro --- fs/ext2/dir.c | 14 +++++++------- fs/ext2/ext2.h | 4 ++-- fs/ext2/namei.c | 17 ++++++----------- 3 files changed, 15 insertions(+), 20 deletions(-) diff --git a/fs/ext2/dir.c b/fs/ext2/dir.c index 11a49ce8439..9a0fc400f91 100644 --- a/fs/ext2/dir.c +++ b/fs/ext2/dir.c @@ -354,11 +354,11 @@ ext2_readdir (struct file * filp, void * dirent, filldir_t filldir) * (as a parameter - res_dir). Page is returned mapped and unlocked. * Entry is guaranteed to be valid. */ -struct ext2_dir_entry_2 * ext2_find_entry (struct inode * dir, - struct dentry *dentry, struct page ** res_page) +struct ext2_dir_entry_2 *ext2_find_entry (struct inode * dir, + struct qstr *child, struct page ** res_page) { - const char *name = dentry->d_name.name; - int namelen = dentry->d_name.len; + const char *name = child->name; + int namelen = child->len; unsigned reclen = EXT2_DIR_REC_LEN(namelen); unsigned long start, n; unsigned long npages = dir_pages(dir); @@ -431,13 +431,13 @@ struct ext2_dir_entry_2 * ext2_dotdot (struct inode *dir, struct page **p) return de; } -ino_t ext2_inode_by_name(struct inode * dir, struct dentry *dentry) +ino_t ext2_inode_by_name(struct inode *dir, struct qstr *child) { ino_t res = 0; - struct ext2_dir_entry_2 * de; + struct ext2_dir_entry_2 *de; struct page *page; - de = ext2_find_entry (dir, dentry, &page); + de = ext2_find_entry (dir, child, &page); if (de) { res = le32_to_cpu(de->inode); ext2_put_page(page); diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h index bae998c1e44..3203042b36e 100644 --- a/fs/ext2/ext2.h +++ b/fs/ext2/ext2.h @@ -105,9 +105,9 @@ extern void ext2_rsv_window_add(struct super_block *sb, struct ext2_reserve_wind /* dir.c */ extern int ext2_add_link (struct dentry *, struct inode *); -extern ino_t ext2_inode_by_name(struct inode *, struct dentry *); +extern ino_t ext2_inode_by_name(struct inode *, struct qstr *); extern int ext2_make_empty(struct inode *, struct inode *); -extern struct ext2_dir_entry_2 * ext2_find_entry (struct inode *,struct dentry *, struct page **); +extern struct ext2_dir_entry_2 * ext2_find_entry (struct inode *,struct qstr *, struct page **); extern int ext2_delete_entry (struct ext2_dir_entry_2 *, struct page *); extern int ext2_empty_dir (struct inode *); extern struct ext2_dir_entry_2 * ext2_dotdot (struct inode *, struct page **); diff --git a/fs/ext2/namei.c b/fs/ext2/namei.c index a1b328ab1e5..2a747252ec1 100644 --- a/fs/ext2/namei.c +++ b/fs/ext2/namei.c @@ -60,7 +60,7 @@ static struct dentry *ext2_lookup(struct inode * dir, struct dentry *dentry, str if (dentry->d_name.len > EXT2_NAME_LEN) return ERR_PTR(-ENAMETOOLONG); - ino = ext2_inode_by_name(dir, dentry); + ino = ext2_inode_by_name(dir, &dentry->d_name); inode = NULL; if (ino) { inode = ext2_iget(dir->i_sb, ino); @@ -72,13 +72,8 @@ static struct dentry *ext2_lookup(struct inode * dir, struct dentry *dentry, str struct dentry *ext2_get_parent(struct dentry *child) { - unsigned long ino; - struct dentry dotdot; - - dotdot.d_name.name = ".."; - dotdot.d_name.len = 2; - - ino = ext2_inode_by_name(child->d_inode, &dotdot); + struct qstr dotdot = {.name = "..", .len = 2}; + unsigned long ino = ext2_inode_by_name(child->d_inode, &dotdot); if (!ino) return ERR_PTR(-ENOENT); return d_obtain_alias(ext2_iget(child->d_inode->i_sb, ino)); @@ -246,7 +241,7 @@ static int ext2_unlink(struct inode * dir, struct dentry *dentry) struct page * page; int err = -ENOENT; - de = ext2_find_entry (dir, dentry, &page); + de = ext2_find_entry (dir, &dentry->d_name, &page); if (!de) goto out; @@ -288,7 +283,7 @@ static int ext2_rename (struct inode * old_dir, struct dentry * old_dentry, struct ext2_dir_entry_2 * old_de; int err = -ENOENT; - old_de = ext2_find_entry (old_dir, old_dentry, &old_page); + old_de = ext2_find_entry (old_dir, &old_dentry->d_name, &old_page); if (!old_de) goto out; @@ -308,7 +303,7 @@ static int ext2_rename (struct inode * old_dir, struct dentry * old_dentry, goto out_dir; err = -ENOENT; - new_de = ext2_find_entry (new_dir, new_dentry, &new_page); + new_de = ext2_find_entry (new_dir, &new_dentry->d_name, &new_page); if (!new_de) goto out_dir; inode_inc_link_count(old_inode); -- 2.41.1