Pull overlayfs updates from Miklos Szeredi:
- Report constant st_ino values across copy-up even if underlying
layers are on different filesystems, but using different st_dev
values for each layer.
Ideally we'd report the same st_dev across the overlay, and it's
possible to do for filesystems that use only 32bits for st_ino by
unifying the inum space. It would be nice if it wasn't a choice of 32
or 64, rather filesystems could report their current maximum (that
could change on resize, so it wouldn't be set in stone).
- miscellaneus fixes and a cleanup of ovl_fill_super(), that was long
overdue.
- created a path_put_init() helper that clears out the pointers after
putting the ref.
I think this could be useful elsewhere, so added it to <linux/path.h>
* 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs: (30 commits)
ovl: remove unneeded arg from ovl_verify_origin()
ovl: Put upperdentry if ovl_check_origin() fails
ovl: rename ufs to ofs
ovl: clean up getting lower layers
ovl: clean up workdir creation
ovl: clean up getting upper layer
ovl: move ovl_get_workdir() and ovl_get_lower_layers()
ovl: reduce the number of arguments for ovl_workdir_create()
ovl: change order of setup in ovl_fill_super()
ovl: factor out ovl_free_fs() helper
ovl: grab reference to workbasedir early
ovl: split out ovl_get_indexdir() from ovl_fill_super()
ovl: split out ovl_get_lower_layers() from ovl_fill_super()
ovl: split out ovl_get_workdir() from ovl_fill_super()
ovl: split out ovl_get_upper() from ovl_fill_super()
ovl: split out ovl_get_lowerstack() from ovl_fill_super()
ovl: split out ovl_get_workpath() from ovl_fill_super()
ovl: split out ovl_get_upperpath() from ovl_fill_super()
ovl: use path_put_init() in error paths for ovl_fill_super()
vfs: add path_put_init()
...
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