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block/loop: Don't grab "struct file" for vfs_getattr() operation. 

vfs_getattr() needs "struct path" rather than "struct file".
Let's use path_get()/path_put() rather than get_file()/fput().

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Tetsuo Handa 2018-11-08 14:01:01 +01:00 committed by Jens Axboe
parent e051bd0ddf
commit b1ab5fa309
1 changed files with 5 additions and 5 deletions
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10
drivers/block/loop.c
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@ -1204,7 +1204,7 @@ loop_set_status(struct loop_device *lo, const struct loop_info64 *info)
static int
loop_get_status(struct loop_device *lo, struct loop_info64 *info)
{
struct file *file;
struct path path;
struct kstat stat;
int ret;
@ -1229,16 +1229,16 @@ loop_get_status(struct loop_device *lo, struct loop_info64 *info)
}
/* Drop lo_ctl_mutex while we call into the filesystem. */
file = get_file(lo->lo_backing_file);
path = lo->lo_backing_file->f_path;
path_get(&path);
mutex_unlock(&lo->lo_ctl_mutex);
ret = vfs_getattr(&file->f_path, &stat, STATX_INO,
AT_STATX_SYNC_AS_STAT);
ret = vfs_getattr(&path, &stat, STATX_INO, AT_STATX_SYNC_AS_STAT);
if (!ret) {
info->lo_device = huge_encode_dev(stat.dev);
info->lo_inode = stat.ino;
info->lo_rdevice = huge_encode_dev(stat.rdev);
}
fput(file);
path_put(&path);
return ret;
}