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authorLinus Torvalds <torvalds@linux-foundation.org>2012-05-10 13:14:12 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-10 19:54:35 -0700
commit26fe575028703948880fce4355a210c76bb0536e (patch)
tree0a7d04289e1eb1f1739659ebc9498d40f2add5da /fs/ubifs/xattr.c
parentee983e89670704b2a05e897b161f2674a42d1508 (diff)
downloadop-kernel-dev-26fe575028703948880fce4355a210c76bb0536e.zip
op-kernel-dev-26fe575028703948880fce4355a210c76bb0536e.tar.gz
vfs: make it possible to access the dentry hash/len as one 64-bit entry
This allows comparing hash and len in one operation on 64-bit architectures. Right now only __d_lookup_rcu() takes advantage of this, since that is the case we care most about. The use of anonymous struct/unions hides the alternate 64-bit approach from most users, the exception being a few cases where we initialize a 'struct qstr' with a static initializer. This makes the problematic cases use a new QSTR_INIT() helper function for that (but initializing just the name pointer with a "{ .name = xyzzy }" initializer remains valid, as does just copying another qstr structure). Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ubifs/xattr.c')
-rw-r--r--fs/ubifs/xattr.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/ubifs/xattr.c b/fs/ubifs/xattr.c
index 85b2722..7a8bafa 100644
--- a/fs/ubifs/xattr.c
+++ b/fs/ubifs/xattr.c
@@ -298,7 +298,7 @@ int ubifs_setxattr(struct dentry *dentry, const char *name,
{
struct inode *inode, *host = dentry->d_inode;
struct ubifs_info *c = host->i_sb->s_fs_info;
- struct qstr nm = { .name = name, .len = strlen(name) };
+ struct qstr nm = QSTR_INIT(name, strlen(name));
struct ubifs_dent_node *xent;
union ubifs_key key;
int err, type;
@@ -361,7 +361,7 @@ ssize_t ubifs_getxattr(struct dentry *dentry, const char *name, void *buf,
{
struct inode *inode, *host = dentry->d_inode;
struct ubifs_info *c = host->i_sb->s_fs_info;
- struct qstr nm = { .name = name, .len = strlen(name) };
+ struct qstr nm = QSTR_INIT(name, strlen(name));
struct ubifs_inode *ui;
struct ubifs_dent_node *xent;
union ubifs_key key;
@@ -524,7 +524,7 @@ int ubifs_removexattr(struct dentry *dentry, const char *name)
{
struct inode *inode, *host = dentry->d_inode;
struct ubifs_info *c = host->i_sb->s_fs_info;
- struct qstr nm = { .name = name, .len = strlen(name) };
+ struct qstr nm = QSTR_INIT(name, strlen(name));
struct ubifs_dent_node *xent;
union ubifs_key key;
int err;
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