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authorAl Viro <viro@zeniv.linux.org.uk>2011-07-07 18:43:21 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2011-07-20 01:44:23 -0400
commit5b4b299cc7b6adfb9401bf7f826a80f190b971be (patch)
treef897ca34aa49f28292f4951ca00a71efac7f24aa /fs/nfsd/nfs4recover.c
parente7f59097071f2e193e900093742a4be85839f3d9 (diff)
downloadlinux-5b4b299cc7b6adfb9401bf7f826a80f190b971be.tar.bz2
nfsd4_list_rec_dir(): don't bother with reopening rec_file
just rewind it to the beginning before vfs_readdir() and be done with that... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/nfsd/nfs4recover.c')
-rw-r--r--fs/nfsd/nfs4recover.c52
1 files changed, 21 insertions, 31 deletions
diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
index ffb59ef6f82f..29d77f60585b 100644
--- a/fs/nfsd/nfs4recover.c
+++ b/fs/nfsd/nfs4recover.c
@@ -191,52 +191,42 @@ nfsd4_build_namelist(void *arg, const char *name, int namlen,
}
static int
-nfsd4_list_rec_dir(struct dentry *dir, recdir_func *f)
+nfsd4_list_rec_dir(recdir_func *f)
{
const struct cred *original_cred;
- struct file *filp;
+ struct dentry *dir = rec_file->f_path.dentry;
LIST_HEAD(names);
- struct name_list *entry;
- struct dentry *dentry;
int status;
- if (!rec_file)
- return 0;
-
status = nfs4_save_creds(&original_cred);
if (status < 0)
return status;
- filp = dentry_open(dget(dir), mntget(rec_file->f_path.mnt), O_RDONLY,
- current_cred());
- status = PTR_ERR(filp);
- if (IS_ERR(filp))
- goto out;
- status = vfs_readdir(filp, nfsd4_build_namelist, &names);
- fput(filp);
+ status = vfs_llseek(rec_file, 0, SEEK_SET);
+ if (status < 0) {
+ nfs4_reset_creds(original_cred);
+ return status;
+ }
+
+ status = vfs_readdir(rec_file, nfsd4_build_namelist, &names);
mutex_lock_nested(&dir->d_inode->i_mutex, I_MUTEX_PARENT);
while (!list_empty(&names)) {
+ struct name_list *entry;
entry = list_entry(names.next, struct name_list, list);
-
- dentry = lookup_one_len(entry->name, dir, HEXDIR_LEN-1);
- if (IS_ERR(dentry)) {
- status = PTR_ERR(dentry);
- break;
+ if (!status) {
+ struct dentry *dentry;
+ dentry = lookup_one_len(entry->name, dir, HEXDIR_LEN-1);
+ if (IS_ERR(dentry)) {
+ status = PTR_ERR(dentry);
+ break;
+ }
+ status = f(dir, dentry);
+ dput(dentry);
}
- status = f(dir, dentry);
- dput(dentry);
- if (status)
- break;
list_del(&entry->list);
kfree(entry);
}
mutex_unlock(&dir->d_inode->i_mutex);
-out:
- while (!list_empty(&names)) {
- entry = list_entry(names.next, struct name_list, list);
- list_del(&entry->list);
- kfree(entry);
- }
nfs4_reset_creds(original_cred);
return status;
}
@@ -322,7 +312,7 @@ nfsd4_recdir_purge_old(void) {
status = mnt_want_write(rec_file->f_path.mnt);
if (status)
goto out;
- status = nfsd4_list_rec_dir(rec_file->f_path.dentry, purge_old);
+ status = nfsd4_list_rec_dir(purge_old);
if (status == 0)
vfs_fsync(rec_file, 0);
mnt_drop_write(rec_file->f_path.mnt);
@@ -352,7 +342,7 @@ nfsd4_recdir_load(void) {
if (!rec_file)
return 0;
- status = nfsd4_list_rec_dir(rec_file->f_path.dentry, load_recdir);
+ status = nfsd4_list_rec_dir(load_recdir);
if (status)
printk("nfsd4: failed loading clients from recovery"
" directory %s\n", rec_file->f_path.dentry->d_name.name);