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| author | Shen Feng <shen@cn.fujitsu.com> | 2008-07-11 19:27:31 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2008-07-11 19:27:31 -0400 |
| commit | 69baee062a044ef1588e423e52131710e7584d1a (patch) | |
| tree | b9ba2b28b041d1db20d822ba8fc37a3e6dfdc825 /fs/ext4/dir.c | |
| parent | 91d99827791fdd5f9424458ad5ae870f89dbcadf (diff) | |
| download | lwn-69baee062a044ef1588e423e52131710e7584d1a.tar.gz lwn-69baee062a044ef1588e423e52131710e7584d1a.zip | |
ext4: improve some code in rb tree part of dir.c
* remove unnecessary code in free_rb_tree_fname
* rename free_rb_tree_fname to ext4_htree_create_dir_info
since it and ext4_htree_free_dir_info are a pair
* replace kmalloc with kzalloc in ext4_htree_free_dir_info
All these make the code more readable and simple.
PS: this patch is also suitable for ext3.
Signed-off-by: Shen Feng <shen@cn.fujitsu.com>
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/dir.c')
| -rw-r--r-- | fs/ext4/dir.c | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c index 2bf0331ea194..5ed5108766c1 100644 --- a/fs/ext4/dir.c +++ b/fs/ext4/dir.c @@ -272,7 +272,7 @@ static void free_rb_tree_fname(struct rb_root *root) while (n) { /* Do the node's children first */ - if ((n)->rb_left) { + if (n->rb_left) { n = n->rb_left; continue; } @@ -301,24 +301,18 @@ static void free_rb_tree_fname(struct rb_root *root) parent->rb_right = NULL; n = parent; } - root->rb_node = NULL; } -static struct dir_private_info *create_dir_info(loff_t pos) +static struct dir_private_info *ext4_htree_create_dir_info(loff_t pos) { struct dir_private_info *p; - p = kmalloc(sizeof(struct dir_private_info), GFP_KERNEL); + p = kzalloc(sizeof(struct dir_private_info), GFP_KERNEL); if (!p) return NULL; - p->root.rb_node = NULL; - p->curr_node = NULL; - p->extra_fname = NULL; - p->last_pos = 0; p->curr_hash = pos2maj_hash(pos); p->curr_minor_hash = pos2min_hash(pos); - p->next_hash = 0; return p; } @@ -433,7 +427,7 @@ static int ext4_dx_readdir(struct file * filp, int ret; if (!info) { - info = create_dir_info(filp->f_pos); + info = ext4_htree_create_dir_info(filp->f_pos); if (!info) return -ENOMEM; filp->private_data = info; |