Messages in this thread | | | Date | Wed, 25 Jun 2008 21:31:49 +0900 | From | Tejun Heo <> | Subject | Re: [PATCH 05/11] sysfs: sysfs_chmod_file handle multiple superblocks |
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Daniel Lezcano wrote: > Tejun Heo wrote: >> Hello, >> >> Daniel Lezcano wrote: >>>> I think it would be great if sysfs_chmod_file can do all-or-nothing >>>> instead of failing half way through but given the interface of >>>> notify_change(), it could be difficult to implement. Any ideas? >>> Is it acceptable to queue the notifications in a list until we are in >>> the loop and loop again to notify when exiting the first loop without >>> error ? >> >> Can you please take a look at the following patch? >> >> http://article.gmane.org/gmane.linux.file-systems/24484 >> >> Which replaces notify_change() call to two calls to sysfs_setattr() and >> fsnotify_change(). The latter never fails and the former should always >> succeed if inode_change_ok() succeeds (inode_setattr() never fails >> unless the size is changing), so I think the correct thing to do is... >> >> * Separate out sysfs_do_setattr() which doesn't do inode_change_ok() and >> just sets the attributes. Making it a void function which triggers >> WARN_ON() when inode_setattr() fails would be a good idea. >> >> * Implement sysfs_chmod_file() in similar way rename/move are >> implemented - allocate all resources and check conditions and then iff >> everything looks okay commit the operation by calling sysfs_do_setattr(). >> >> How does that sound? > > Does this patch looks like what you are describing ?
Yeah, something like that. With looping for all the inodes added, it looks like it will work fine.
Thanks.
-- tejun
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