From be94d11704ef79030fd2e6a0c41b4a7f65f9e860 Mon Sep 17 00:00:00 2001 From: Mark Fasheh Date: Tue, 11 Sep 2007 15:22:06 -0700 Subject: ocfs2: Provide convenience function for ino lookup A couple paths which needed to just match a parent dir + name pair to an inode number were a bit messy because they had to deal with ocfs2_find_files_on_disk() which returns a larger number of values. Provide a convenience function, ocfs2_lookup_ino_from_name() which internalizes all the extra accounting. Signed-off-by: Mark Fasheh Reviewed-by: Joel Becker --- fs/ocfs2/dir.c | 17 +++++++++++++++++ fs/ocfs2/dir.h | 2 ++ fs/ocfs2/export.c | 8 +------- fs/ocfs2/namei.c | 9 ++------- fs/ocfs2/sysfile.c | 10 +++------- 5 files changed, 25 insertions(+), 21 deletions(-) (limited to 'fs/ocfs2') diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c index 4bb54406354b..4791683a119c 100644 --- a/fs/ocfs2/dir.c +++ b/fs/ocfs2/dir.c @@ -628,6 +628,23 @@ leave: return status; } +/* + * Convenience function for callers which just want the block number + * mapped to a name and don't require the full dirent info, etc. + */ +int ocfs2_lookup_ino_from_name(struct inode *dir, const char *name, + int namelen, u64 *blkno) +{ + int ret; + struct buffer_head *bh = NULL; + struct ocfs2_dir_entry *dirent = NULL; + + ret = ocfs2_find_files_on_disk(name, namelen, blkno, dir, &bh, &dirent); + brelse(bh); + + return ret; +} + /* Check for a name within a directory. * * Return 0 if the name does not exist diff --git a/fs/ocfs2/dir.h b/fs/ocfs2/dir.h index 3e65f91b034d..d03eaaa5cfd4 100644 --- a/fs/ocfs2/dir.h +++ b/fs/ocfs2/dir.h @@ -61,6 +61,8 @@ int ocfs2_find_files_on_disk(const char *name, struct inode *inode, struct buffer_head **dirent_bh, struct ocfs2_dir_entry **dirent); +int ocfs2_lookup_ino_from_name(struct inode *dir, const char *name, + int namelen, u64 *blkno); int ocfs2_readdir(struct file *filp, void *dirent, filldir_t filldir); int ocfs2_dir_foreach(struct inode *inode, loff_t *f_pos, void *priv, filldir_t filldir); diff --git a/fs/ocfs2/export.c b/fs/ocfs2/export.c index bc48177bd183..c3bbc198f9ce 100644 --- a/fs/ocfs2/export.c +++ b/fs/ocfs2/export.c @@ -88,8 +88,6 @@ static struct dentry *ocfs2_get_parent(struct dentry *child) struct dentry *parent; struct inode *inode; struct inode *dir = child->d_inode; - struct buffer_head *dirent_bh = NULL; - struct ocfs2_dir_entry *dirent; mlog_entry("(0x%p, '%.*s')\n", child, child->d_name.len, child->d_name.name); @@ -105,8 +103,7 @@ static struct dentry *ocfs2_get_parent(struct dentry *child) goto bail; } - status = ocfs2_find_files_on_disk("..", 2, &blkno, dir, &dirent_bh, - &dirent); + status = ocfs2_lookup_ino_from_name(dir, "..", 2, &blkno); if (status < 0) { parent = ERR_PTR(-ENOENT); goto bail_unlock; @@ -131,9 +128,6 @@ static struct dentry *ocfs2_get_parent(struct dentry *child) bail_unlock: ocfs2_meta_unlock(dir, 0); - if (dirent_bh) - brelse(dirent_bh); - bail: mlog_exit_ptr(parent); diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c index aae6c0bf6696..98aeebc2c9fa 100644 --- a/fs/ocfs2/namei.c +++ b/fs/ocfs2/namei.c @@ -101,10 +101,8 @@ static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry, { int status; u64 blkno; - struct buffer_head *dirent_bh = NULL; struct inode *inode = NULL; struct dentry *ret; - struct ocfs2_dir_entry *dirent; struct ocfs2_inode_info *oi; mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry, @@ -126,9 +124,8 @@ static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry, goto bail; } - status = ocfs2_find_files_on_disk(dentry->d_name.name, - dentry->d_name.len, &blkno, - dir, &dirent_bh, &dirent); + status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name, + dentry->d_name.len, &blkno); if (status < 0) goto bail_add; @@ -183,8 +180,6 @@ bail_unlock: ocfs2_meta_unlock(dir, 0); bail: - if (dirent_bh) - brelse(dirent_bh); mlog_exit_ptr(ret); diff --git a/fs/ocfs2/sysfile.c b/fs/ocfs2/sysfile.c index 5df6e35d09b1..fd2e846e3e6f 100644 --- a/fs/ocfs2/sysfile.c +++ b/fs/ocfs2/sysfile.c @@ -100,17 +100,14 @@ static struct inode * _ocfs2_get_system_file_inode(struct ocfs2_super *osb, char namebuf[40]; struct inode *inode = NULL; u64 blkno; - struct buffer_head *dirent_bh = NULL; - struct ocfs2_dir_entry *de = NULL; int status = 0; ocfs2_sprintf_system_inode_name(namebuf, sizeof(namebuf), type, slot); - status = ocfs2_find_files_on_disk(namebuf, strlen(namebuf), - &blkno, osb->sys_root_inode, - &dirent_bh, &de); + status = ocfs2_lookup_ino_from_name(osb->sys_root_inode, namebuf, + strlen(namebuf), &blkno); if (status < 0) { goto bail; } @@ -122,8 +119,7 @@ static struct inode * _ocfs2_get_system_file_inode(struct ocfs2_super *osb, goto bail; } bail: - if (dirent_bh) - brelse(dirent_bh); + return inode; } -- cgit v1.2.3-59-g8ed1b