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VFS: fs/cachefiles: d_backing_inode() annotations

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Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
David Howells
2015-03-17 22:26:21 +00:00
committed by Al Viro
parent dea655c28a
commit 466b77bc95
6 changed files with 62 additions and 62 deletions
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70
fs/cachefiles/namei.c
View File

@@ -355,7 +355,7 @@ try_again:
return -EIO;
}
if (grave->d_inode) {
if (d_is_positive(grave)) {
unlock_rename(cache->graveyard, dir);
dput(grave);
grave = NULL;
@@ -415,7 +415,7 @@ int cachefiles_delete_object(struct cachefiles_cache *cache,
_enter(",OBJ%x{%p}", object->fscache.debug_id, object->dentry);
ASSERT(object->dentry);
ASSERT(object->dentry->d_inode);
ASSERT(d_backing_inode(object->dentry));
ASSERT(object->dentry->d_parent);
dir = dget_parent(object->dentry);
@@ -473,7 +473,7 @@ int cachefiles_walk_to_object(struct cachefiles_object *parent,
path.mnt = cache->mnt;
ASSERT(parent->dentry);
ASSERT(parent->dentry->d_inode);
ASSERT(d_backing_inode(parent->dentry));
if (!(d_is_dir(parent->dentry))) {
// TODO: convert file to dir
@@ -505,21 +505,21 @@ lookup_again:
if (IS_ERR(next))
goto lookup_error;
_debug("next -> %p %s", next, next->d_inode ? "positive" : "negative");
_debug("next -> %p %s", next, d_backing_inode(next) ? "positive" : "negative");
if (!key)
object->new = !next->d_inode;
object->new = !d_backing_inode(next);
/* if this element of the path doesn't exist, then the lookup phase
* failed, and we can release any readers in the certain knowledge that
* there's nothing for them to actually read */
if (!next->d_inode)
if (d_is_negative(next))
fscache_object_lookup_negative(&object->fscache);
/* we need to create the object if it's negative */
if (key || object->type == FSCACHE_COOKIE_TYPE_INDEX) {
/* index objects and intervening tree levels must be subdirs */
if (!next->d_inode) {
if (d_is_negative(next)) {
ret = cachefiles_has_space(cache, 1, 0);
if (ret < 0)
goto create_error;
@@ -534,21 +534,21 @@ lookup_again:
if (ret < 0)
goto create_error;
ASSERT(next->d_inode);
ASSERT(d_backing_inode(next));
_debug("mkdir -> %p{%p{ino=%lu}}",
next, next->d_inode, next->d_inode->i_ino);
next, d_backing_inode(next), d_backing_inode(next)->i_ino);
} else if (!d_can_lookup(next)) {
pr_err("inode %lu is not a directory\n",
next->d_inode->i_ino);
d_backing_inode(next)->i_ino);
ret = -ENOBUFS;
goto error;
}
} else {
/* non-index objects start out life as files */
if (!next->d_inode) {
if (d_is_negative(next)) {
ret = cachefiles_has_space(cache, 1, 0);
if (ret < 0)
goto create_error;
@@ -563,16 +563,16 @@ lookup_again:
if (ret < 0)
goto create_error;
ASSERT(next->d_inode);
ASSERT(d_backing_inode(next));
_debug("create -> %p{%p{ino=%lu}}",
next, next->d_inode, next->d_inode->i_ino);
next, d_backing_inode(next), d_backing_inode(next)->i_ino);
} else if (!d_can_lookup(next) &&
!d_is_reg(next)
) {
pr_err("inode %lu is not a file or directory\n",
next->d_inode->i_ino);
d_backing_inode(next)->i_ino);
ret = -ENOBUFS;
goto error;
}
@@ -646,7 +646,7 @@ lookup_again:
const struct address_space_operations *aops;
ret = -EPERM;
aops = object->dentry->d_inode->i_mapping->a_ops;
aops = d_backing_inode(object->dentry)->i_mapping->a_ops;
if (!aops->bmap)
goto check_error;
@@ -659,7 +659,7 @@ lookup_again:
object->new = 0;
fscache_obtained_object(&object->fscache);
_leave(" = 0 [%lu]", object->dentry->d_inode->i_ino);
_leave(" = 0 [%lu]", d_backing_inode(object->dentry)->i_ino);
return 0;
create_error:
@@ -731,10 +731,10 @@ struct dentry *cachefiles_get_directory(struct cachefiles_cache *cache,
}
_debug("subdir -> %p %s",
subdir, subdir->d_inode ? "positive" : "negative");
subdir, d_backing_inode(subdir) ? "positive" : "negative");
/* we need to create the subdir if it doesn't exist yet */
if (!subdir->d_inode) {
if (d_is_negative(subdir)) {
ret = cachefiles_has_space(cache, 1, 0);
if (ret < 0)
goto mkdir_error;
@@ -750,18 +750,18 @@ struct dentry *cachefiles_get_directory(struct cachefiles_cache *cache,
if (ret < 0)
goto mkdir_error;
ASSERT(subdir->d_inode);
ASSERT(d_backing_inode(subdir));
_debug("mkdir -> %p{%p{ino=%lu}}",
subdir,
subdir->d_inode,
subdir->d_inode->i_ino);
d_backing_inode(subdir),
d_backing_inode(subdir)->i_ino);
}
mutex_unlock(&d_inode(dir)->i_mutex);
/* we need to make sure the subdir is a directory */
ASSERT(subdir->d_inode);
ASSERT(d_backing_inode(subdir));
if (!d_can_lookup(subdir)) {
pr_err("%s is not a directory\n", dirname);
@@ -770,18 +770,18 @@ struct dentry *cachefiles_get_directory(struct cachefiles_cache *cache,
}
ret = -EPERM;
if (!subdir->d_inode->i_op->setxattr ||
!subdir->d_inode->i_op->getxattr ||
!subdir->d_inode->i_op->lookup ||
!subdir->d_inode->i_op->mkdir ||
!subdir->d_inode->i_op->create ||
(!subdir->d_inode->i_op->rename &&
!subdir->d_inode->i_op->rename2) ||
!subdir->d_inode->i_op->rmdir ||
!subdir->d_inode->i_op->unlink)
if (!d_backing_inode(subdir)->i_op->setxattr ||
!d_backing_inode(subdir)->i_op->getxattr ||
!d_backing_inode(subdir)->i_op->lookup ||
!d_backing_inode(subdir)->i_op->mkdir ||
!d_backing_inode(subdir)->i_op->create ||
(!d_backing_inode(subdir)->i_op->rename &&
!d_backing_inode(subdir)->i_op->rename2) ||
!d_backing_inode(subdir)->i_op->rmdir ||
!d_backing_inode(subdir)->i_op->unlink)
goto check_error;
_leave(" = [%lu]", subdir->d_inode->i_ino);
_leave(" = [%lu]", d_backing_inode(subdir)->i_ino);
return subdir;
check_error:
@@ -836,12 +836,12 @@ static struct dentry *cachefiles_check_active(struct cachefiles_cache *cache,
goto lookup_error;
//_debug("victim -> %p %s",
// victim, victim->d_inode ? "positive" : "negative");
// victim, d_backing_inode(victim) ? "positive" : "negative");
/* if the object is no longer there then we probably retired the object
* at the netfs's request whilst the cull was in progress
*/
if (!victim->d_inode) {
if (d_is_negative(victim)) {
mutex_unlock(&d_inode(dir)->i_mutex);
dput(victim);
_leave(" = -ENOENT [absent]");
@@ -913,7 +913,7 @@ int cachefiles_cull(struct cachefiles_cache *cache, struct dentry *dir,
return PTR_ERR(victim);
_debug("victim -> %p %s",
victim, victim->d_inode ? "positive" : "negative");
victim, d_backing_inode(victim) ? "positive" : "negative");
/* okay... the victim is not being used so we can cull it
* - start by marking it as stale