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fsnotify: Pass fsnotify_iter_info into handle_event handler

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Pass fsnotify_iter_info into ->handle_event() handler so that it can
release and reacquire SRCU lock via fsnotify_prepare_user_wait() and
fsnotify_finish_user_wait() functions.  These functions also make sure
current marks are appropriately pinned so that iteration protected by
srcu in fsnotify() stays safe.

Reviewed-by: Miklos Szeredi <mszeredi@redhat.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Jan Kara
2016-11-10 17:51:50 +01:00
parent abc77577a6
commit 9385a84d7e
10 changed files with 30 additions and 15 deletions
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3
fs/notify/inotify/inotify.h
View File

@@ -27,7 +27,8 @@ extern int inotify_handle_event(struct fsnotify_group *group,
struct fsnotify_mark *inode_mark,
struct fsnotify_mark *vfsmount_mark,
u32 mask, const void *data, int data_type,
const unsigned char *file_name, u32 cookie);
const unsigned char *file_name, u32 cookie,
struct fsnotify_iter_info *iter_info);
extern const struct fsnotify_ops inotify_fsnotify_ops;

3
fs/notify/inotify/inotify_fsnotify.c
View File

@@ -68,7 +68,8 @@ int inotify_handle_event(struct fsnotify_group *group,
struct fsnotify_mark *inode_mark,
struct fsnotify_mark *vfsmount_mark,
u32 mask, const void *data, int data_type,
const unsigned char *file_name, u32 cookie)
const unsigned char *file_name, u32 cookie,
struct fsnotify_iter_info *iter_info)
{
struct inotify_inode_mark *i_mark;
struct inotify_event_info *event;

2
fs/notify/inotify/inotify_user.c
View File

@@ -474,7 +474,7 @@ void inotify_ignored_and_remove_idr(struct fsnotify_mark *fsn_mark,
/* Queue ignore event for the watch */
inotify_handle_event(group, NULL, fsn_mark, NULL, FS_IN_IGNORED,
NULL, FSNOTIFY_EVENT_NONE, NULL, 0);
NULL, FSNOTIFY_EVENT_NONE, NULL, 0, NULL);
i_mark = container_of(fsn_mark, struct inotify_inode_mark, fsn_mark);
/* remove this mark from the idr */