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authorAl Viro <viro@zeniv.linux.org.uk>2016-04-15 15:08:36 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2016-05-02 19:49:28 -0400
commit9902af79c01a8e39bb99b922fa3eef6d4ea23d69 (patch)
treeb04cc75b5e4a028bfdb619e0a0a0f8cd71113ff2 /fs/inode.c
parentd9171b9345261e0d941d92fdda5672b5db67f968 (diff)
downloadop-kernel-dev-9902af79c01a8e39bb99b922fa3eef6d4ea23d69.zip
op-kernel-dev-9902af79c01a8e39bb99b922fa3eef6d4ea23d69.tar.gz
parallel lookups: actual switch to rwsem
ta-da! The main issue is the lack of down_write_killable(), so the places like readdir.c switched to plain inode_lock(); once killable variants of rwsem primitives appear, that'll be dealt with. lockdep side also might need more work Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/inode.c')
-rw-r--r--fs/inode.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/fs/inode.c b/fs/inode.c
index 4b884f7..4ccbc21 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -166,8 +166,8 @@ int inode_init_always(struct super_block *sb, struct inode *inode)
spin_lock_init(&inode->i_lock);
lockdep_set_class(&inode->i_lock, &sb->s_type->i_lock_key);
- mutex_init(&inode->i_mutex);
- lockdep_set_class(&inode->i_mutex, &sb->s_type->i_mutex_key);
+ init_rwsem(&inode->i_rwsem);
+ lockdep_set_class(&inode->i_rwsem, &sb->s_type->i_mutex_key);
atomic_set(&inode->i_dio_count, 0);
@@ -925,13 +925,13 @@ void lockdep_annotate_inode_mutex_key(struct inode *inode)
struct file_system_type *type = inode->i_sb->s_type;
/* Set new key only if filesystem hasn't already changed it */
- if (lockdep_match_class(&inode->i_mutex, &type->i_mutex_key)) {
+ if (lockdep_match_class(&inode->i_rwsem, &type->i_mutex_key)) {
/*
* ensure nobody is actually holding i_mutex
*/
- mutex_destroy(&inode->i_mutex);
- mutex_init(&inode->i_mutex);
- lockdep_set_class(&inode->i_mutex,
+ // mutex_destroy(&inode->i_mutex);
+ init_rwsem(&inode->i_rwsem);
+ lockdep_set_class(&inode->i_rwsem,
&type->i_mutex_dir_key);
}
}
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