755b5bc681
Adding notification mark to object list has been currently done through
fsnotify_add_{inode|vfsmount}_mark() helpers from
fsnotify_add_mark_locked() which call fsnotify_add_mark_list(). Remove
this unnecessary indirection to simplify the code.
Pushing all the locking to fsnotify_add_mark_list() also allows us to
allocate the connector structure with GFP_KERNEL mode.
Reviewed-by: Miklos Szeredi <mszeredi@redhat.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
64 lines
2.5 KiB
C
64 lines
2.5 KiB
C
#ifndef __FS_NOTIFY_FSNOTIFY_H_
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#define __FS_NOTIFY_FSNOTIFY_H_
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#include <linux/list.h>
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#include <linux/fsnotify.h>
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#include <linux/srcu.h>
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#include <linux/types.h>
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#include "../mount.h"
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/* destroy all events sitting in this groups notification queue */
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extern void fsnotify_flush_notify(struct fsnotify_group *group);
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/* protects reads of inode and vfsmount marks list */
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extern struct srcu_struct fsnotify_mark_srcu;
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/* Calculate mask of events for a list of marks */
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extern u32 fsnotify_recalc_mask(struct fsnotify_mark_connector *conn);
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/* compare two groups for sorting of marks lists */
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extern int fsnotify_compare_groups(struct fsnotify_group *a,
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struct fsnotify_group *b);
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/* vfsmount specific destruction of a mark */
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extern void fsnotify_destroy_vfsmount_mark(struct fsnotify_mark *mark);
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/* inode specific destruction of a mark */
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extern struct inode *fsnotify_destroy_inode_mark(struct fsnotify_mark *mark);
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/* Find mark belonging to given group in the list of marks */
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extern struct fsnotify_mark *fsnotify_find_mark(
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struct fsnotify_mark_connector *conn,
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struct fsnotify_group *group);
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/* Destroy all marks connected via given connector protected by 'lock' */
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extern void fsnotify_destroy_marks(struct fsnotify_mark_connector *conn,
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spinlock_t *lock);
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/* run the list of all marks associated with inode and destroy them */
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static inline void fsnotify_clear_marks_by_inode(struct inode *inode)
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{
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fsnotify_destroy_marks(inode->i_fsnotify_marks, &inode->i_lock);
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}
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/* run the list of all marks associated with vfsmount and destroy them */
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static inline void fsnotify_clear_marks_by_mount(struct vfsmount *mnt)
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{
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fsnotify_destroy_marks(real_mount(mnt)->mnt_fsnotify_marks,
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&mnt->mnt_root->d_lock);
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}
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/* prepare for freeing all marks associated with given group */
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extern void fsnotify_detach_group_marks(struct fsnotify_group *group);
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/*
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* wait for fsnotify_mark_srcu period to end and free all marks in destroy_list
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*/
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extern void fsnotify_mark_destroy_list(void);
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/*
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* update the dentry->d_flags of all of inode's children to indicate if inode cares
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* about events that happen to its children.
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*/
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extern void __fsnotify_update_child_dentry_flags(struct inode *inode);
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/* allocate and destroy and event holder to attach events to notification/access queues */
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extern struct fsnotify_event_holder *fsnotify_alloc_event_holder(void);
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extern void fsnotify_destroy_event_holder(struct fsnotify_event_holder *holder);
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#endif /* __FS_NOTIFY_FSNOTIFY_H_ */
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