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switch the IO-triggering parts of umount to fs_pin

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Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Al Viro 2015-01-10 19:01:08 -05:00
commit 87b95ce096
3 changed files with 20 additions and 29 deletions
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4
fs/mount.h
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@ -2,6 +2,7 @@
#include <linux/seq_file.h>
#include <linux/poll.h>
#include <linux/ns_common.h>
#include <linux/fs_pin.h>
struct mnt_namespace {
atomic_t count;
@ -62,7 +63,8 @@ struct mount {
int mnt_group_id; /* peer group identifier */
int mnt_expiry_mark; /* true if marked for expiry */
struct hlist_head mnt_pins;
struct path mnt_ex_mountpoint;
struct fs_pin mnt_umount;
struct dentry *mnt_ex_mountpoint;
};
#define MNT_NS_INTERNAL ERR_PTR(-EINVAL) /* distinct from any mnt_namespace */