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wrappers for ->i_mutex access

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parallel to mutex_{lock,unlock,trylock,is_locked,lock_nested},
inode_foo(inode) being mutex_foo(&inode->i_mutex).

Please, use those for access to ->i_mutex; over the coming cycle
->i_mutex will become rwsem, with ->lookup() done with it held
only shared.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2016-01-22 15:40:57 -05:00
parent 57b8f112cf
commit 5955102c99
177 changed files with 908 additions and 883 deletions
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20
fs/overlayfs/readdir.c
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@@ -228,7 +228,7 @@ static int ovl_check_whiteouts(struct dentry *dir, struct ovl_readdir_data *rdd)
dput(dentry);
}
}
mutex_unlock(&dir->d_inode->i_mutex);
inode_unlock(dir->d_inode);
}
revert_creds(old_cred);
put_cred(override_cred);
@@ -399,7 +399,7 @@ static loff_t ovl_dir_llseek(struct file *file, loff_t offset, int origin)
loff_t res;
struct ovl_dir_file *od = file->private_data;
mutex_lock(&file_inode(file)->i_mutex);
inode_lock(file_inode(file));
if (!file->f_pos)
ovl_dir_reset(file);
@@ -429,7 +429,7 @@ static loff_t ovl_dir_llseek(struct file *file, loff_t offset, int origin)
res = offset;
}
out_unlock:
mutex_unlock(&file_inode(file)->i_mutex);
inode_unlock(file_inode(file));
return res;
}
@@ -454,10 +454,10 @@ static int ovl_dir_fsync(struct file *file, loff_t start, loff_t end,
ovl_path_upper(dentry, &upperpath);
realfile = ovl_path_open(&upperpath, O_RDONLY);
smp_mb__before_spinlock();
mutex_lock(&inode->i_mutex);
inode_lock(inode);
if (!od->upperfile) {
if (IS_ERR(realfile)) {
mutex_unlock(&inode->i_mutex);
inode_unlock(inode);
return PTR_ERR(realfile);
}
od->upperfile = realfile;
@@ -467,7 +467,7 @@ static int ovl_dir_fsync(struct file *file, loff_t start, loff_t end,
fput(realfile);
realfile = od->upperfile;
}
mutex_unlock(&inode->i_mutex);
inode_unlock(inode);
}
}
@@ -479,9 +479,9 @@ static int ovl_dir_release(struct inode *inode, struct file *file)
struct ovl_dir_file *od = file->private_data;
if (od->cache) {
mutex_lock(&inode->i_mutex);
inode_lock(inode);
ovl_cache_put(od, file->f_path.dentry);
mutex_unlock(&inode->i_mutex);
inode_unlock(inode);
}
fput(od->realfile);
if (od->upperfile)
@@ -557,7 +557,7 @@ void ovl_cleanup_whiteouts(struct dentry *upper, struct list_head *list)
{
struct ovl_cache_entry *p;
mutex_lock_nested(&upper->d_inode->i_mutex, I_MUTEX_CHILD);
inode_lock_nested(upper->d_inode, I_MUTEX_CHILD);
list_for_each_entry(p, list, l_node) {
struct dentry *dentry;
@@ -575,5 +575,5 @@ void ovl_cleanup_whiteouts(struct dentry *upper, struct list_head *list)
ovl_cleanup(upper->d_inode, dentry);
dput(dentry);
}
mutex_unlock(&upper->d_inode->i_mutex);
inode_unlock(upper->d_inode);
}