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authorAl Viro <viro@zeniv.linux.org.uk>2012-06-10 15:36:40 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-07-14 16:34:07 +0400
commitfa3c56bbda6c2ac2a57d96ba501dbe85cccd312b (patch)
tree8cda2d282bf386e88cd9e05967d1624034332a75 /fs
parentfacc3530fb5c89a40bc83045422add392b8db4a1 (diff)
fs/nfs/dir.c: switch to passing nd->flags instead of nd wherever possible
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
-rw-r--r--fs/nfs/dir.c51
1 files changed, 19 insertions, 32 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index ad5aef4995a..71a199435ca 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1031,27 +1031,14 @@ static int nfs_check_verifier(struct inode *dir, struct dentry *dentry)
}
/*
- * Return the intent data that applies to this particular path component
- *
- * Note that the current set of intents only apply to the very last
- * component of the path and none of them is set before that last
- * component.
- */
-static inline unsigned int nfs_lookup_check_intent(unsigned int flags,
- unsigned int mask)
-{
- return flags & mask;
-}
-
-/*
* Use intent information to check whether or not we're going to do
* an O_EXCL create using this path component.
*/
-static int nfs_is_exclusive_create(struct inode *dir, struct nameidata *nd)
+static int nfs_is_exclusive_create(struct inode *dir, unsigned int flags)
{
if (NFS_PROTO(dir)->version == 2)
return 0;
- return nd && nfs_lookup_check_intent(nd->flags, LOOKUP_EXCL);
+ return flags & LOOKUP_EXCL;
}
/*
@@ -1063,20 +1050,18 @@ static int nfs_is_exclusive_create(struct inode *dir, struct nameidata *nd)
*
*/
static inline
-int nfs_lookup_verify_inode(struct inode *inode, struct nameidata *nd)
+int nfs_lookup_verify_inode(struct inode *inode, unsigned int flags)
{
struct nfs_server *server = NFS_SERVER(inode);
if (IS_AUTOMOUNT(inode))
return 0;
/* VFS wants an on-the-wire revalidation */
- if (nd->flags & LOOKUP_REVAL)
+ if (flags & LOOKUP_REVAL)
goto out_force;
/* This is an open(2) */
- if (nfs_lookup_check_intent(nd->flags, LOOKUP_OPEN) != 0 &&
- !(server->flags & NFS_MOUNT_NOCTO) &&
- (S_ISREG(inode->i_mode) ||
- S_ISDIR(inode->i_mode)))
+ if ((flags & LOOKUP_OPEN) && !(server->flags & NFS_MOUNT_NOCTO) &&
+ (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)))
goto out_force;
return 0;
out_force:
@@ -1092,10 +1077,10 @@ out_force:
*/
static inline
int nfs_neg_need_reval(struct inode *dir, struct dentry *dentry,
- struct nameidata *nd)
+ unsigned int flags)
{
/* Don't revalidate a negative dentry if we're creating a new file */
- if (nd != NULL && nfs_lookup_check_intent(nd->flags, LOOKUP_CREATE) != 0)
+ if (flags & LOOKUP_CREATE)
return 0;
if (NFS_SERVER(dir)->flags & NFS_MOUNT_LOOKUP_CACHE_NONEG)
return 1;
@@ -1115,6 +1100,7 @@ int nfs_neg_need_reval(struct inode *dir, struct dentry *dentry,
*/
static int nfs_lookup_revalidate(struct dentry *dentry, struct nameidata *nd)
{
+ unsigned int flags = nd->flags;
struct inode *dir;
struct inode *inode;
struct dentry *parent;
@@ -1122,7 +1108,7 @@ static int nfs_lookup_revalidate(struct dentry *dentry, struct nameidata *nd)
struct nfs_fattr *fattr = NULL;
int error;
- if (nd->flags & LOOKUP_RCU)
+ if (flags & LOOKUP_RCU)
return -ECHILD;
parent = dget_parent(dentry);
@@ -1131,7 +1117,7 @@ static int nfs_lookup_revalidate(struct dentry *dentry, struct nameidata *nd)
inode = dentry->d_inode;
if (!inode) {
- if (nfs_neg_need_reval(dir, dentry, nd))
+ if (nfs_neg_need_reval(dir, dentry, flags))
goto out_bad;
goto out_valid_noent;
}
@@ -1147,8 +1133,8 @@ static int nfs_lookup_revalidate(struct dentry *dentry, struct nameidata *nd)
goto out_set_verifier;
/* Force a full look up iff the parent directory has changed */
- if (!nfs_is_exclusive_create(dir, nd) && nfs_check_verifier(dir, dentry)) {
- if (nfs_lookup_verify_inode(inode, nd))
+ if (!nfs_is_exclusive_create(dir, flags) && nfs_check_verifier(dir, dentry)) {
+ if (nfs_lookup_verify_inode(inode, flags))
goto out_zap_parent;
goto out_valid;
}
@@ -1306,7 +1292,7 @@ static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, stru
* If we're doing an exclusive create, optimize away the lookup
* but don't hash the dentry.
*/
- if (nfs_is_exclusive_create(dir, nd)) {
+ if (nd && nfs_is_exclusive_create(dir, nd->flags)) {
d_instantiate(dentry, NULL);
res = NULL;
goto out;
@@ -1507,15 +1493,16 @@ no_open:
static int nfs4_lookup_revalidate(struct dentry *dentry, struct nameidata *nd)
{
+ unsigned int flags = nd->flags;
struct dentry *parent = NULL;
struct inode *inode;
struct inode *dir;
int ret = 0;
- if (nd->flags & LOOKUP_RCU)
+ if (flags & LOOKUP_RCU)
return -ECHILD;
- if (!(nd->flags & LOOKUP_OPEN) || (nd->flags & LOOKUP_DIRECTORY))
+ if (!(flags & LOOKUP_OPEN) || (flags & LOOKUP_DIRECTORY))
goto no_open;
if (d_mountpoint(dentry))
goto no_open;
@@ -1528,7 +1515,7 @@ static int nfs4_lookup_revalidate(struct dentry *dentry, struct nameidata *nd)
* optimize away revalidation of negative dentries.
*/
if (inode == NULL) {
- if (!nfs_neg_need_reval(dir, dentry, nd))
+ if (!nfs_neg_need_reval(dir, dentry, flags))
ret = 1;
goto out;
}
@@ -1537,7 +1524,7 @@ static int nfs4_lookup_revalidate(struct dentry *dentry, struct nameidata *nd)
if (!S_ISREG(inode->i_mode))
goto no_open_dput;
/* We cannot do exclusive creation on a positive dentry */
- if (nd && nd->flags & LOOKUP_EXCL)
+ if (flags & LOOKUP_EXCL)
goto no_open_dput;
/* Let f_op->open() actually open (and revalidate) the file */