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Merge branch 'dentry-cleanups' (dcache access cleanups and optimizations)

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This branch simplifies and clarifies the dcache lookup, and allows us to
do certain nice optimizations when comparing dentries.  It also cleans
up the interface to __d_lookup_rcu(), especially around passing the
inode information around.

* dentry-cleanups:
  vfs: make it possible to access the dentry hash/len as one 64-bit entry
  vfs: move dentry name length comparison from dentry_cmp() into callers
  vfs: do the careful dentry name access for all dentry_cmp cases
  vfs: remove unnecessary d_unhashed() check from __d_lookup_rcu
  vfs: clean up __d_lookup_rcu() and dentry_cmp() interfaces
This commit is contained in:
Linus Torvalds 2012-05-21 08:50:57 -07:00
commit 31ed8e6f93
19 changed files with 167 additions and 103 deletions
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4
net/sunrpc/clnt.c
View file

@ -127,9 +127,7 @@ static struct dentry *rpc_setup_pipedir_sb(struct super_block *sb,
{
static uint32_t clntid;
char name[15];
struct qstr q = {
.name = name,
};
struct qstr q = { .name = name };
struct dentry *dir, *dentry;
int error;

7
net/sunrpc/rpc_pipe.c
View file

@ -1059,12 +1059,9 @@ static const struct rpc_filelist files[] = {
struct dentry *rpc_d_lookup_sb(const struct super_block *sb,
const unsigned char *dir_name)
{
struct qstr dir = {
.name = dir_name,
.len = strlen(dir_name),
.hash = full_name_hash(dir_name, strlen(dir_name)),
};
struct qstr dir = QSTR_INIT(dir_name, strlen(dir_name));
dir.hash = full_name_hash(dir.name, dir.len);
return d_lookup(sb->s_root, &dir);
}
EXPORT_SYMBOL_GPL(rpc_d_lookup_sb);