luck/tmp_suning_uos_patched
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[PATCH] use get_fs_struct() in proc

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This patch cleans up proc_cwd_link() and proc_root_link() by factoring
out common code into get_fs_struct().

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Miklos Szeredi 2005-09-06 15:18:22 -07:00 committed by Linus Torvalds
parent 09dd17d3e5
commit 0494f6ec5d
1 changed files with 12 additions and 11 deletions
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23
fs/proc/base.c
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@ -297,15 +297,21 @@ static int proc_fd_link(struct inode *inode, struct dentry **dentry, struct vfsm
return -ENOENT;
}
static int proc_cwd_link(struct inode *inode, struct dentry **dentry, struct vfsmount **mnt)
static struct fs_struct *get_fs_struct(struct task_struct *task)
{
struct fs_struct *fs;
int result = -ENOENT;
task_lock(proc_task(inode));
fs = proc_task(inode)->fs;
task_lock(task);
fs = task->fs;
if(fs)
atomic_inc(&fs->count);
task_unlock(proc_task(inode));
task_unlock(task);
return fs;
}
static int proc_cwd_link(struct inode *inode, struct dentry **dentry, struct vfsmount **mnt)
{
struct fs_struct *fs = get_fs_struct(proc_task(inode));
int result = -ENOENT;
if (fs) {
read_lock(&fs->lock);
*mnt = mntget(fs->pwdmnt);
@ -319,13 +325,8 @@ static int proc_cwd_link(struct inode *inode, struct dentry **dentry, struct vfs
static int proc_root_link(struct inode *inode, struct dentry **dentry, struct vfsmount **mnt)
{
struct fs_struct *fs;
struct fs_struct *fs = get_fs_struct(proc_task(inode));
int result = -ENOENT;
task_lock(proc_task(inode));
fs = proc_task(inode)->fs;
if(fs)
atomic_inc(&fs->count);
task_unlock(proc_task(inode));
if (fs) {
read_lock(&fs->lock);
*mnt = mntget(fs->rootmnt);