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ceph: fix comments mentioning i_mutex 

inode->i_mutex has been replaced with inode->i_rwsem long ago. Fix
comments still mentioning i_mutex.

Signed-off-by: hongnanli <hongnan.li@linux.alibaba.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
hongnanli 2022-02-11 11:33:25 +08:00 коммит произвёл Ilya Dryomov
Родитель 370f0acf2c
Коммит 810313c5f3
2 изменённых файлов: 5 добавлений и 5 удалений
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6
fs/ceph/dir.c
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@ -145,7 +145,7 @@ __dcache_find_get_entry(struct dentry *parent, u64 idx,
return ERR_PTR(-EAGAIN); return ERR_PTR(-EAGAIN);
} }
/* reading/filling the cache are serialized by /* reading/filling the cache are serialized by
i_mutex, no need to use page lock */ i_rwsem, no need to use page lock */
unlock_page(cache_ctl->page); unlock_page(cache_ctl->page);
cache_ctl->dentries = kmap(cache_ctl->page); cache_ctl->dentries = kmap(cache_ctl->page);
} }
@ -155,7 +155,7 @@ __dcache_find_get_entry(struct dentry *parent, u64 idx,
rcu_read_lock(); rcu_read_lock();
spin_lock(&parent->d_lock); spin_lock(&parent->d_lock);
/* check i_size again here, because empty directory can be /* check i_size again here, because empty directory can be
* marked as complete while not holding the i_mutex. */ * marked as complete while not holding the i_rwsem. */
if (ceph_dir_is_complete_ordered(dir) && ptr_pos < i_size_read(dir)) if (ceph_dir_is_complete_ordered(dir) && ptr_pos < i_size_read(dir))
dentry = cache_ctl->dentries[cache_ctl->index]; dentry = cache_ctl->dentries[cache_ctl->index];
else else
@ -671,7 +671,7 @@ struct dentry *ceph_handle_snapdir(struct ceph_mds_request *req,
struct dentry *dentry) struct dentry *dentry)
{ {
struct ceph_fs_client *fsc = ceph_sb_to_client(dentry->d_sb); struct ceph_fs_client *fsc = ceph_sb_to_client(dentry->d_sb);
struct inode *parent = d_inode(dentry->d_parent); /* we hold i_mutex */ struct inode *parent = d_inode(dentry->d_parent); /* we hold i_rwsem */
/* .snap dir? */ /* .snap dir? */
if (ceph_snap(parent) == CEPH_NOSNAP && if (ceph_snap(parent) == CEPH_NOSNAP &&

4
fs/ceph/inode.c
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@ -1201,7 +1201,7 @@ out_unlock:
/* /*
* splice a dentry to an inode. * splice a dentry to an inode.
* caller must hold directory i_mutex for this to be safe. * caller must hold directory i_rwsem for this to be safe.
*/ */
static int splice_dentry(struct dentry **pdn, struct inode *in) static int splice_dentry(struct dentry **pdn, struct inode *in)
{ {
@ -1598,7 +1598,7 @@ static int fill_readdir_cache(struct inode *dir, struct dentry *dn,
return idx == 0 ? -ENOMEM : 0; return idx == 0 ? -ENOMEM : 0;
} }
/* reading/filling the cache are serialized by /* reading/filling the cache are serialized by
* i_mutex, no need to use page lock */ * i_rwsem, no need to use page lock */
unlock_page(ctl->page); unlock_page(ctl->page);
ctl->dentries = kmap(ctl->page); ctl->dentries = kmap(ctl->page);
if (idx == 0) if (idx == 0)