diff options
| author | Amir Goldstein <amir73il@gmail.com> | 2019-01-10 19:04:39 +0200 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2019-02-07 16:38:35 +0100 |
| commit | 73072283a249c798838e09813760db8bcdd9cd3a (patch) | |
| tree | fed1224b11dece26dc6a183da16e2ddb119d2526 /fs/notify | |
| parent | ec86ff5689ff9605e2d57e016098764ad9a2fee5 (diff) | |
fanotify: use vfs_get_fsid() helper instead of vfs_statfs()
This is a cleanup that doesn't change any logic.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/notify')
| -rw-r--r-- | fs/notify/fanotify/fanotify_user.c | 25 |
1 files changed, 10 insertions, 15 deletions
diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c index 603419ce096f..396de6edad2b 100644 --- a/fs/notify/fanotify/fanotify_user.c +++ b/fs/notify/fanotify/fanotify_user.c @@ -863,35 +863,31 @@ out_destroy_group: } /* Check if filesystem can encode a unique fid */ -static int fanotify_test_fid(struct path *path, struct kstatfs *stat) +static int fanotify_test_fid(struct path *path, __kernel_fsid_t *fsid) { - struct kstatfs root_stat; - struct path root = { - .mnt = path->mnt, - .dentry = path->dentry->d_sb->s_root, - }; + __kernel_fsid_t root_fsid; int err; /* * Make sure path is not in filesystem with zero fsid (e.g. tmpfs). */ - err = vfs_statfs(path, stat); + err = vfs_get_fsid(path->dentry, fsid); if (err) return err; - if (!stat->f_fsid.val[0] && !stat->f_fsid.val[1]) + if (!fsid->val[0] && !fsid->val[1]) return -ENODEV; /* * Make sure path is not inside a filesystem subvolume (e.g. btrfs) * which uses a different fsid than sb root. */ - err = vfs_statfs(&root, &root_stat); + err = vfs_get_fsid(path->dentry->d_sb->s_root, &root_fsid); if (err) return err; - if (root_stat.f_fsid.val[0] != stat->f_fsid.val[0] || - root_stat.f_fsid.val[1] != stat->f_fsid.val[1]) + if (root_fsid.val[0] != fsid->val[0] || + root_fsid.val[1] != fsid->val[1]) return -EXDEV; /* @@ -916,8 +912,7 @@ static int do_fanotify_mark(int fanotify_fd, unsigned int flags, __u64 mask, struct fsnotify_group *group; struct fd f; struct path path; - struct kstatfs stat; - __kernel_fsid_t *fsid = NULL; + __kernel_fsid_t __fsid, *fsid = NULL; u32 valid_mask = FANOTIFY_EVENTS | FANOTIFY_EVENT_FLAGS; unsigned int mark_type = flags & FANOTIFY_MARK_TYPE_BITS; int ret; @@ -996,11 +991,11 @@ static int do_fanotify_mark(int fanotify_fd, unsigned int flags, __u64 mask, goto fput_and_out; if (FAN_GROUP_FLAG(group, FAN_REPORT_FID)) { - ret = fanotify_test_fid(&path, &stat); + ret = fanotify_test_fid(&path, &__fsid); if (ret) goto path_put_and_out; - fsid = &stat.f_fsid; + fsid = &__fsid; } /* inode held in place by reference to path; group by fget on fd */ |