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| author | Alexey Dobriyan <adobriyan@gmail.com> | 2008-04-29 01:01:41 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-29 08:06:18 -0700 |
| commit | 5e971dce0b2f6896e02372512df0d1fb0bfe2d55 (patch) | |
| tree | bce0356470331c49c92b87042103034e55beaa8e /fs/proc/generic.c | |
| parent | 7cee4e00e0f8aa7290266382ea903a5a1b92c9a1 (diff) | |
| download | linux-5e971dce0b2f6896e02372512df0d1fb0bfe2d55.tar.bz2 | |
proc: drop several "PDE valid/invalid" checks
proc-misc code is noticeably full of "if (de)" checks when PDE passed is
always valid. Remove them.
Addition of such check in proc_lookup_de() is for failed lookup case.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/proc/generic.c')
| -rw-r--r-- | fs/proc/generic.c | 33 |
1 files changed, 14 insertions, 19 deletions
diff --git a/fs/proc/generic.c b/fs/proc/generic.c index 3c6f5669523a..8b406e21a258 100644 --- a/fs/proc/generic.c +++ b/fs/proc/generic.c @@ -388,20 +388,18 @@ struct dentry *proc_lookup_de(struct proc_dir_entry *de, struct inode *dir, lock_kernel(); spin_lock(&proc_subdir_lock); - if (de) { - for (de = de->subdir; de ; de = de->next) { - if (de->namelen != dentry->d_name.len) - continue; - if (!memcmp(dentry->d_name.name, de->name, de->namelen)) { - unsigned int ino; - - ino = de->low_ino; - de_get(de); - spin_unlock(&proc_subdir_lock); - error = -EINVAL; - inode = proc_get_inode(dir->i_sb, ino, de); - goto out_unlock; - } + for (de = de->subdir; de ; de = de->next) { + if (de->namelen != dentry->d_name.len) + continue; + if (!memcmp(dentry->d_name.name, de->name, de->namelen)) { + unsigned int ino; + + ino = de->low_ino; + de_get(de); + spin_unlock(&proc_subdir_lock); + error = -EINVAL; + inode = proc_get_inode(dir->i_sb, ino, de); + goto out_unlock; } } spin_unlock(&proc_subdir_lock); @@ -413,7 +411,8 @@ out_unlock: d_add(dentry, inode); return NULL; } - de_put(de); + if (de) + de_put(de); return ERR_PTR(error); } @@ -443,10 +442,6 @@ int proc_readdir_de(struct proc_dir_entry *de, struct file *filp, void *dirent, lock_kernel(); ino = inode->i_ino; - if (!de) { - ret = -EINVAL; - goto out; - } i = filp->f_pos; switch (i) { case 0: |