44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
#include <linux/mount.h>
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struct mnt_pcp {
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int mnt_count;
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int mnt_writers;
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};
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struct mount {
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struct list_head mnt_hash;
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struct mount *mnt_parent;
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struct dentry *mnt_mountpoint;
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struct vfsmount mnt;
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#ifdef CONFIG_SMP
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struct mnt_pcp __percpu *mnt_pcp;
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atomic_t mnt_longterm; /* how many of the refs are longterm */
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#else
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int mnt_count;
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int mnt_writers;
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#endif
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struct list_head mnt_mounts; /* list of children, anchored here */
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struct list_head mnt_child; /* and going through their mnt_child */
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/* yet to be moved - up to mnt_list */
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struct list_head mnt_expire; /* link in fs-specific expiry list */
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struct list_head mnt_share; /* circular list of shared mounts */
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struct list_head mnt_slave_list;/* list of slave mounts */
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struct list_head mnt_slave; /* slave list entry */
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struct mount *mnt_master; /* slave is on master->mnt_slave_list */
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struct mnt_namespace *mnt_ns; /* containing namespace */
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int mnt_id; /* mount identifier */
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int mnt_group_id; /* peer group identifier */
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};
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static inline struct mount *real_mount(struct vfsmount *mnt)
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{
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return container_of(mnt, struct mount, mnt);
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}
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static inline int mnt_has_parent(struct mount *mnt)
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{
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return mnt != mnt->mnt_parent;
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}
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extern struct mount *__lookup_mnt(struct vfsmount *, struct dentry *, int);
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