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Diffstat (limited to 'fs/nfs/dir.c')
-rw-r--r--fs/nfs/dir.c88
1 files changed, 31 insertions, 57 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 982a2064fe4c..28a238dab23a 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -133,13 +133,14 @@ nfs_opendir(struct inode *inode, struct file *filp)
{
int res;
- dfprintk(VFS, "NFS: opendir(%s/%ld)\n",
- inode->i_sb->s_id, inode->i_ino);
+ dfprintk(FILE, "NFS: open dir(%s/%s)\n",
+ filp->f_path.dentry->d_parent->d_name.name,
+ filp->f_path.dentry->d_name.name);
+
+ nfs_inc_stats(inode, NFSIOS_VFSOPEN);
- lock_kernel();
/* Call generic open code in order to cache credentials */
res = nfs_open(inode, filp);
- unlock_kernel();
return res;
}
@@ -528,13 +529,11 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
struct nfs_fattr fattr;
long res;
- dfprintk(VFS, "NFS: readdir(%s/%s) starting at cookie %Lu\n",
+ dfprintk(FILE, "NFS: readdir(%s/%s) starting at cookie %llu\n",
dentry->d_parent->d_name.name, dentry->d_name.name,
(long long)filp->f_pos);
nfs_inc_stats(inode, NFSIOS_VFSGETDENTS);
- lock_kernel();
-
/*
* filp->f_pos points to the dirent entry number.
* *desc->dir_cookie has the cookie for the next entry. We have
@@ -592,10 +591,9 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
}
out:
nfs_unblock_sillyrename(dentry);
- unlock_kernel();
if (res > 0)
res = 0;
- dfprintk(VFS, "NFS: readdir(%s/%s) returns %ld\n",
+ dfprintk(FILE, "NFS: readdir(%s/%s) returns %ld\n",
dentry->d_parent->d_name.name, dentry->d_name.name,
res);
return res;
@@ -603,7 +601,15 @@ out:
static loff_t nfs_llseek_dir(struct file *filp, loff_t offset, int origin)
{
- mutex_lock(&filp->f_path.dentry->d_inode->i_mutex);
+ struct dentry *dentry = filp->f_path.dentry;
+ struct inode *inode = dentry->d_inode;
+
+ dfprintk(FILE, "NFS: llseek dir(%s/%s, %lld, %d)\n",
+ dentry->d_parent->d_name.name,
+ dentry->d_name.name,
+ offset, origin);
+
+ mutex_lock(&inode->i_mutex);
switch (origin) {
case 1:
offset += filp->f_pos;
@@ -619,7 +625,7 @@ static loff_t nfs_llseek_dir(struct file *filp, loff_t offset, int origin)
nfs_file_open_context(filp)->dir_cookie = 0;
}
out:
- mutex_unlock(&filp->f_path.dentry->d_inode->i_mutex);
+ mutex_unlock(&inode->i_mutex);
return offset;
}
@@ -629,10 +635,11 @@ out:
*/
static int nfs_fsync_dir(struct file *filp, struct dentry *dentry, int datasync)
{
- dfprintk(VFS, "NFS: fsync_dir(%s/%s) datasync %d\n",
+ dfprintk(FILE, "NFS: fsync dir(%s/%s) datasync %d\n",
dentry->d_parent->d_name.name, dentry->d_name.name,
datasync);
+ nfs_inc_stats(dentry->d_inode, NFSIOS_VFSFSYNC);
return 0;
}
@@ -767,7 +774,6 @@ static int nfs_lookup_revalidate(struct dentry * dentry, struct nameidata *nd)
struct nfs_fattr fattr;
parent = dget_parent(dentry);
- lock_kernel();
dir = parent->d_inode;
nfs_inc_stats(dir, NFSIOS_DENTRYREVALIDATE);
inode = dentry->d_inode;
@@ -805,7 +811,6 @@ static int nfs_lookup_revalidate(struct dentry * dentry, struct nameidata *nd)
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
out_valid:
- unlock_kernel();
dput(parent);
dfprintk(LOOKUPCACHE, "NFS: %s(%s/%s) is valid\n",
__func__, dentry->d_parent->d_name.name,
@@ -824,7 +829,6 @@ out_zap_parent:
shrink_dcache_parent(dentry);
}
d_drop(dentry);
- unlock_kernel();
dput(parent);
dfprintk(LOOKUPCACHE, "NFS: %s(%s/%s) is invalid\n",
__func__, dentry->d_parent->d_name.name,
@@ -858,6 +862,14 @@ static int nfs_dentry_delete(struct dentry *dentry)
}
+static void nfs_drop_nlink(struct inode *inode)
+{
+ spin_lock(&inode->i_lock);
+ if (inode->i_nlink > 0)
+ drop_nlink(inode);
+ spin_unlock(&inode->i_lock);
+}
+
/*
* Called when the dentry loses inode.
* We use it to clean up silly-renamed files.
@@ -869,10 +881,8 @@ static void nfs_dentry_iput(struct dentry *dentry, struct inode *inode)
NFS_I(inode)->cache_validity |= NFS_INO_INVALID_DATA;
if (dentry->d_flags & DCACHE_NFSFS_RENAMED) {
- lock_kernel();
drop_nlink(inode);
nfs_complete_unlink(dentry, inode);
- unlock_kernel();
}
iput(inode);
}
@@ -903,8 +913,6 @@ static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, stru
res = ERR_PTR(-ENOMEM);
dentry->d_op = NFS_PROTO(dir)->dentry_ops;
- lock_kernel();
-
/*
* If we're doing an exclusive create, optimize away the lookup
* but don't hash the dentry.
@@ -912,7 +920,7 @@ static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, stru
if (nfs_is_exclusive_create(dir, nd)) {
d_instantiate(dentry, NULL);
res = NULL;
- goto out_unlock;
+ goto out;
}
parent = dentry->d_parent;
@@ -940,8 +948,6 @@ no_entry:
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
out_unblock_sillyrename:
nfs_unblock_sillyrename(parent);
-out_unlock:
- unlock_kernel();
out:
return res;
}
@@ -999,9 +1005,7 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry
}
/* Open the file on the server */
- lock_kernel();
res = nfs4_atomic_open(dir, dentry, nd);
- unlock_kernel();
if (IS_ERR(res)) {
error = PTR_ERR(res);
switch (error) {
@@ -1063,9 +1067,7 @@ static int nfs_open_revalidate(struct dentry *dentry, struct nameidata *nd)
* operations that change the directory. We therefore save the
* change attribute *before* we do the RPC call.
*/
- lock_kernel();
ret = nfs4_open_revalidate(dir, dentry, openflags, nd);
- unlock_kernel();
out:
dput(parent);
if (!ret)
@@ -1218,14 +1220,11 @@ static int nfs_create(struct inode *dir, struct dentry *dentry, int mode,
if ((nd->flags & LOOKUP_CREATE) != 0)
open_flags = nd->intent.open.flags;
- lock_kernel();
error = NFS_PROTO(dir)->create(dir, dentry, &attr, open_flags, nd);
if (error != 0)
goto out_err;
- unlock_kernel();
return 0;
out_err:
- unlock_kernel();
d_drop(dentry);
return error;
}
@@ -1248,14 +1247,11 @@ nfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev)
attr.ia_mode = mode;
attr.ia_valid = ATTR_MODE;
- lock_kernel();
status = NFS_PROTO(dir)->mknod(dir, dentry, &attr, rdev);
if (status != 0)
goto out_err;
- unlock_kernel();
return 0;
out_err:
- unlock_kernel();
d_drop(dentry);
return status;
}
@@ -1274,15 +1270,12 @@ static int nfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
attr.ia_valid = ATTR_MODE;
attr.ia_mode = mode | S_IFDIR;
- lock_kernel();
error = NFS_PROTO(dir)->mkdir(dir, dentry, &attr);
if (error != 0)
goto out_err;
- unlock_kernel();
return 0;
out_err:
d_drop(dentry);
- unlock_kernel();
return error;
}
@@ -1299,14 +1292,12 @@ static int nfs_rmdir(struct inode *dir, struct dentry *dentry)
dfprintk(VFS, "NFS: rmdir(%s/%ld), %s\n",
dir->i_sb->s_id, dir->i_ino, dentry->d_name.name);
- lock_kernel();
error = NFS_PROTO(dir)->rmdir(dir, &dentry->d_name);
/* Ensure the VFS deletes this inode */
if (error == 0 && dentry->d_inode != NULL)
clear_nlink(dentry->d_inode);
else if (error == -ENOENT)
nfs_dentry_handle_enoent(dentry);
- unlock_kernel();
return error;
}
@@ -1408,7 +1399,7 @@ static int nfs_safe_remove(struct dentry *dentry)
error = NFS_PROTO(dir)->remove(dir, &dentry->d_name);
/* The VFS may want to delete this inode */
if (error == 0)
- drop_nlink(inode);
+ nfs_drop_nlink(inode);
nfs_mark_for_revalidate(inode);
} else
error = NFS_PROTO(dir)->remove(dir, &dentry->d_name);
@@ -1431,7 +1422,6 @@ static int nfs_unlink(struct inode *dir, struct dentry *dentry)
dfprintk(VFS, "NFS: unlink(%s/%ld, %s)\n", dir->i_sb->s_id,
dir->i_ino, dentry->d_name.name);
- lock_kernel();
spin_lock(&dcache_lock);
spin_lock(&dentry->d_lock);
if (atomic_read(&dentry->d_count) > 1) {
@@ -1440,7 +1430,6 @@ static int nfs_unlink(struct inode *dir, struct dentry *dentry)
/* Start asynchronous writeout of the inode */
write_inode_now(dentry->d_inode, 0);
error = nfs_sillyrename(dir, dentry);
- unlock_kernel();
return error;
}
if (!d_unhashed(dentry)) {
@@ -1454,7 +1443,6 @@ static int nfs_unlink(struct inode *dir, struct dentry *dentry)
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
} else if (need_rehash)
d_rehash(dentry);
- unlock_kernel();
return error;
}
@@ -1491,13 +1479,9 @@ static int nfs_symlink(struct inode *dir, struct dentry *dentry, const char *sym
attr.ia_mode = S_IFLNK | S_IRWXUGO;
attr.ia_valid = ATTR_MODE;
- lock_kernel();
-
page = alloc_page(GFP_HIGHUSER);
- if (!page) {
- unlock_kernel();
+ if (!page)
return -ENOMEM;
- }
kaddr = kmap_atomic(page, KM_USER0);
memcpy(kaddr, symname, pathlen);
@@ -1512,7 +1496,6 @@ static int nfs_symlink(struct inode *dir, struct dentry *dentry, const char *sym
dentry->d_name.name, symname, error);
d_drop(dentry);
__free_page(page);
- unlock_kernel();
return error;
}
@@ -1530,7 +1513,6 @@ static int nfs_symlink(struct inode *dir, struct dentry *dentry, const char *sym
} else
__free_page(page);
- unlock_kernel();
return 0;
}
@@ -1544,14 +1526,12 @@ nfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry)
old_dentry->d_parent->d_name.name, old_dentry->d_name.name,
dentry->d_parent->d_name.name, dentry->d_name.name);
- lock_kernel();
d_drop(dentry);
error = NFS_PROTO(dir)->link(inode, dir, &dentry->d_name);
if (error == 0) {
atomic_inc(&inode->i_count);
d_add(dentry, inode);
}
- unlock_kernel();
return error;
}
@@ -1591,7 +1571,6 @@ static int nfs_rename(struct inode *old_dir, struct dentry *old_dentry,
* To prevent any new references to the target during the rename,
* we unhash the dentry and free the inode in advance.
*/
- lock_kernel();
if (!d_unhashed(new_dentry)) {
d_drop(new_dentry);
rehash = new_dentry;
@@ -1635,7 +1614,7 @@ static int nfs_rename(struct inode *old_dir, struct dentry *old_dentry,
/* dentry still busy? */
goto out;
} else
- drop_nlink(new_inode);
+ nfs_drop_nlink(new_inode);
go_ahead:
/*
@@ -1669,7 +1648,6 @@ out:
/* new dentry created? */
if (dentry)
dput(dentry);
- unlock_kernel();
return error;
}
@@ -1962,8 +1940,6 @@ int nfs_permission(struct inode *inode, int mask, struct nameidata *nd)
}
force_lookup:
- lock_kernel();
-
if (!NFS_PROTO(inode)->access)
goto out_notsup;
@@ -1973,7 +1949,6 @@ force_lookup:
put_rpccred(cred);
} else
res = PTR_ERR(cred);
- unlock_kernel();
out:
dfprintk(VFS, "NFS: permission(%s/%ld), mask=0x%x, res=%d\n",
inode->i_sb->s_id, inode->i_ino, mask, res);
@@ -1982,7 +1957,6 @@ out_notsup:
res = nfs_revalidate_inode(NFS_SERVER(inode), inode);
if (res == 0)
res = generic_permission(inode, mask, NULL);
- unlock_kernel();
goto out;
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-04 07:10:21 +0300