From: Jan Kara <jack@suse.cz>
To: Paul Moore <paul@paul-moore.com>
Cc: rgb@redhat.com, Jan Kara <jack@suse.cz>,
linux-audit@redhat.com, amir73il@gmail.com,
Al Viro <viro@ZenIV.linux.org.uk>
Subject: [PATCH 14/14] audit: Use 'mark' name for fsnotify_mark variables
Date: Wed, 17 Oct 2018 12:15:05 +0200 [thread overview]
Message-ID: <20181017101505.25881-15-jack@suse.cz> (raw)
In-Reply-To: <20181017101505.25881-1-jack@suse.cz>
Variables pointing to fsnotify_mark are sometimes called 'entry' and
sometimes 'mark'. Use 'mark' in all places.
Reviewed-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>
---
kernel/audit_tree.c | 79 +++++++++++++++++++++++++++--------------------------
1 file changed, 40 insertions(+), 39 deletions(-)
diff --git a/kernel/audit_tree.c b/kernel/audit_tree.c
index 451d1b744e82..624f22dd4d35 100644
--- a/kernel/audit_tree.c
+++ b/kernel/audit_tree.c
@@ -158,9 +158,9 @@ static void audit_mark_put_chunk(struct audit_chunk *chunk)
call_rcu(&chunk->head, __put_chunk);
}
-static inline struct audit_tree_mark *audit_mark(struct fsnotify_mark *entry)
+static inline struct audit_tree_mark *audit_mark(struct fsnotify_mark *mark)
{
- return container_of(entry, struct audit_tree_mark, mark);
+ return container_of(mark, struct audit_tree_mark, mark);
}
static struct audit_chunk *mark_chunk(struct fsnotify_mark *mark)
@@ -168,9 +168,9 @@ static struct audit_chunk *mark_chunk(struct fsnotify_mark *mark)
return audit_mark(mark)->chunk;
}
-static void audit_tree_destroy_watch(struct fsnotify_mark *entry)
+static void audit_tree_destroy_watch(struct fsnotify_mark *mark)
{
- kmem_cache_free(audit_tree_mark_cachep, audit_mark(entry));
+ kmem_cache_free(audit_tree_mark_cachep, audit_mark(mark));
}
static struct fsnotify_mark *alloc_mark(void)
@@ -224,7 +224,7 @@ static inline struct list_head *chunk_hash(unsigned long key)
return chunk_hash_heads + n % HASH_SIZE;
}
-/* hash_lock & entry->group->mark_mutex is held by caller */
+/* hash_lock & mark->group->mark_mutex is held by caller */
static void insert_hash(struct audit_chunk *chunk)
{
struct list_head *list;
@@ -278,16 +278,16 @@ static struct audit_chunk *find_chunk(struct node *p)
return container_of(p, struct audit_chunk, owners[0]);
}
-static void replace_mark_chunk(struct fsnotify_mark *entry,
+static void replace_mark_chunk(struct fsnotify_mark *mark,
struct audit_chunk *chunk)
{
struct audit_chunk *old;
assert_spin_locked(&hash_lock);
- old = mark_chunk(entry);
- audit_mark(entry)->chunk = chunk;
+ old = mark_chunk(mark);
+ audit_mark(mark)->chunk = chunk;
if (chunk)
- chunk->mark = entry;
+ chunk->mark = mark;
if (old)
old->mark = NULL;
}
@@ -348,7 +348,7 @@ static int chunk_count_trees(struct audit_chunk *chunk)
return ret;
}
-static void untag_chunk(struct audit_chunk *chunk, struct fsnotify_mark *entry)
+static void untag_chunk(struct audit_chunk *chunk, struct fsnotify_mark *mark)
{
struct audit_chunk *new;
int size;
@@ -358,8 +358,8 @@ static void untag_chunk(struct audit_chunk *chunk, struct fsnotify_mark *entry)
* mark_mutex stabilizes chunk attached to the mark so we can check
* whether it didn't change while we've dropped hash_lock.
*/
- if (!(entry->flags & FSNOTIFY_MARK_FLAG_ATTACHED) ||
- mark_chunk(entry) != chunk) {
+ if (!(mark->flags & FSNOTIFY_MARK_FLAG_ATTACHED) ||
+ mark_chunk(mark) != chunk) {
mutex_unlock(&audit_tree_group->mark_mutex);
return;
}
@@ -369,12 +369,12 @@ static void untag_chunk(struct audit_chunk *chunk, struct fsnotify_mark *entry)
spin_lock(&hash_lock);
list_del_init(&chunk->trees);
list_del_rcu(&chunk->hash);
- replace_mark_chunk(entry, NULL);
+ replace_mark_chunk(mark, NULL);
spin_unlock(&hash_lock);
- fsnotify_detach_mark(entry);
+ fsnotify_detach_mark(mark);
mutex_unlock(&audit_tree_group->mark_mutex);
audit_mark_put_chunk(chunk);
- fsnotify_free_mark(entry);
+ fsnotify_free_mark(mark);
return;
}
@@ -400,7 +400,7 @@ static void untag_chunk(struct audit_chunk *chunk, struct fsnotify_mark *entry)
/* Call with group->mark_mutex held, releases it */
static int create_chunk(struct inode *inode, struct audit_tree *tree)
{
- struct fsnotify_mark *entry;
+ struct fsnotify_mark *mark;
struct audit_chunk *chunk = alloc_chunk(1);
if (!chunk) {
@@ -408,16 +408,16 @@ static int create_chunk(struct inode *inode, struct audit_tree *tree)
return -ENOMEM;
}
- entry = alloc_mark();
- if (!entry) {
+ mark = alloc_mark();
+ if (!mark) {
mutex_unlock(&audit_tree_group->mark_mutex);
kfree(chunk);
return -ENOMEM;
}
- if (fsnotify_add_inode_mark_locked(entry, inode, 0)) {
+ if (fsnotify_add_inode_mark_locked(mark, inode, 0)) {
mutex_unlock(&audit_tree_group->mark_mutex);
- fsnotify_put_mark(entry);
+ fsnotify_put_mark(mark);
kfree(chunk);
return -ENOSPC;
}
@@ -425,14 +425,14 @@ static int create_chunk(struct inode *inode, struct audit_tree *tree)
spin_lock(&hash_lock);
if (tree->goner) {
spin_unlock(&hash_lock);
- fsnotify_detach_mark(entry);
+ fsnotify_detach_mark(mark);
mutex_unlock(&audit_tree_group->mark_mutex);
- fsnotify_free_mark(entry);
- fsnotify_put_mark(entry);
+ fsnotify_free_mark(mark);
+ fsnotify_put_mark(mark);
kfree(chunk);
return 0;
}
- replace_mark_chunk(entry, chunk);
+ replace_mark_chunk(mark, chunk);
chunk->owners[0].index = (1U << 31);
chunk->owners[0].owner = tree;
get_tree(tree);
@@ -454,21 +454,21 @@ static int create_chunk(struct inode *inode, struct audit_tree *tree)
* we get notification through ->freeing_mark callback and cleanup
* chunk pointing to this mark.
*/
- fsnotify_put_mark(entry);
+ fsnotify_put_mark(mark);
return 0;
}
/* the first tagged inode becomes root of tree */
static int tag_chunk(struct inode *inode, struct audit_tree *tree)
{
- struct fsnotify_mark *entry;
+ struct fsnotify_mark *mark;
struct audit_chunk *chunk, *old;
struct node *p;
int n;
mutex_lock(&audit_tree_group->mark_mutex);
- entry = fsnotify_find_mark(&inode->i_fsnotify_marks, audit_tree_group);
- if (!entry)
+ mark = fsnotify_find_mark(&inode->i_fsnotify_marks, audit_tree_group);
+ if (!mark)
return create_chunk(inode, tree);
/*
@@ -478,12 +478,12 @@ static int tag_chunk(struct inode *inode, struct audit_tree *tree)
*/
/* are we already there? */
spin_lock(&hash_lock);
- old = mark_chunk(entry);
+ old = mark_chunk(mark);
for (n = 0; n < old->count; n++) {
if (old->owners[n].owner == tree) {
spin_unlock(&hash_lock);
mutex_unlock(&audit_tree_group->mark_mutex);
- fsnotify_put_mark(entry);
+ fsnotify_put_mark(mark);
return 0;
}
}
@@ -492,7 +492,7 @@ static int tag_chunk(struct inode *inode, struct audit_tree *tree)
chunk = alloc_chunk(old->count + 1);
if (!chunk) {
mutex_unlock(&audit_tree_group->mark_mutex);
- fsnotify_put_mark(entry);
+ fsnotify_put_mark(mark);
return -ENOMEM;
}
@@ -500,7 +500,7 @@ static int tag_chunk(struct inode *inode, struct audit_tree *tree)
if (tree->goner) {
spin_unlock(&hash_lock);
mutex_unlock(&audit_tree_group->mark_mutex);
- fsnotify_put_mark(entry);
+ fsnotify_put_mark(mark);
kfree(chunk);
return 0;
}
@@ -520,7 +520,7 @@ static int tag_chunk(struct inode *inode, struct audit_tree *tree)
replace_chunk(chunk, old);
spin_unlock(&hash_lock);
mutex_unlock(&audit_tree_group->mark_mutex);
- fsnotify_put_mark(entry); /* pair to fsnotify_find mark_entry */
+ fsnotify_put_mark(mark); /* pair to fsnotify_find_mark */
audit_mark_put_chunk(old);
return 0;
@@ -1046,16 +1046,17 @@ static int audit_tree_handle_event(struct fsnotify_group *group,
return 0;
}
-static void audit_tree_freeing_mark(struct fsnotify_mark *entry, struct fsnotify_group *group)
+static void audit_tree_freeing_mark(struct fsnotify_mark *mark,
+ struct fsnotify_group *group)
{
struct audit_chunk *chunk;
- mutex_lock(&entry->group->mark_mutex);
+ mutex_lock(&mark->group->mark_mutex);
spin_lock(&hash_lock);
- chunk = mark_chunk(entry);
- replace_mark_chunk(entry, NULL);
+ chunk = mark_chunk(mark);
+ replace_mark_chunk(mark, NULL);
spin_unlock(&hash_lock);
- mutex_unlock(&entry->group->mark_mutex);
+ mutex_unlock(&mark->group->mark_mutex);
if (chunk) {
evict_chunk(chunk);
audit_mark_put_chunk(chunk);
@@ -1065,7 +1066,7 @@ static void audit_tree_freeing_mark(struct fsnotify_mark *entry, struct fsnotify
* We are guaranteed to have at least one reference to the mark from
* either the inode or the caller of fsnotify_destroy_mark().
*/
- BUG_ON(refcount_read(&entry->refcnt) < 1);
+ BUG_ON(refcount_read(&mark->refcnt) < 1);
}
static const struct fsnotify_ops audit_tree_ops = {
--
2.16.4
prev parent reply other threads:[~2018-10-17 10:15 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-17 10:14 [PATCH 0/14 v4] audit: Fix various races when tagging and untagging mounts Jan Kara
2018-10-17 10:14 ` [PATCH 01/14] audit_tree: Remove mark->lock locking Jan Kara
2018-10-17 10:14 ` [PATCH 02/14] audit: Fix possible spurious -ENOSPC error Jan Kara
2018-10-17 10:14 ` [PATCH 03/14] audit: Fix possible tagging failures Jan Kara
2018-10-17 10:14 ` [PATCH 04/14] audit: Embed key into chunk Jan Kara
2018-10-17 10:14 ` [PATCH 05/14] audit: Make hash table insertion safe against concurrent lookups Jan Kara
2018-10-17 10:14 ` [PATCH 06/14] audit: Factor out chunk replacement code Jan Kara
2018-10-18 19:27 ` Richard Guy Briggs
2018-11-06 13:58 ` Paul Moore
2018-11-07 9:55 ` Jan Kara
2018-11-09 14:45 ` Paul Moore
2018-11-12 15:15 ` Paul Moore
2018-11-12 15:25 ` Jan Kara
2018-10-17 10:14 ` [PATCH 07/14] audit: Remove pointless check in insert_hash() Jan Kara
2018-10-17 10:14 ` [PATCH 08/14] audit: Provide helper for dropping mark's chunk reference Jan Kara
2018-10-17 10:15 ` [PATCH 09/14] audit: Allocate fsnotify mark independently of chunk Jan Kara
2018-10-17 10:15 ` [PATCH 10/14] audit: Guarantee forward progress of chunk untagging Jan Kara
2018-10-18 19:29 ` Richard Guy Briggs
2018-10-17 10:15 ` [PATCH 11/14] audit: Drop all unused chunk nodes during deletion Jan Kara
2018-10-18 19:32 ` Richard Guy Briggs
2018-11-06 14:14 ` Paul Moore
2018-11-07 10:00 ` Jan Kara
2018-10-17 10:15 ` [PATCH 12/14] audit: Simplify locking around untag_chunk() Jan Kara
2018-10-18 12:27 ` Richard Guy Briggs
2018-10-19 8:22 ` Jan Kara
2018-10-19 11:18 ` Richard Guy Briggs
2018-10-17 10:15 ` [PATCH 13/14] audit: Replace chunk attached to mark instead of replacing mark Jan Kara
2018-10-18 19:39 ` Richard Guy Briggs
2018-10-17 10:15 ` Jan Kara [this message]
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