kernfs: implement kernfs_root->supers list

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commit 7d568a8383 upstream.

Currently, there's no way to find out which super_blocks are
associated with a given kernfs_root.  Let's implement it - the planned
inotify extension to kernfs_notify() needs it.

Make kernfs_super_info point back to the super_block and chain it at
kernfs_root->supers.

Signed-off-by: Tejun Heo <tj@kernel.org>
[lizf: Backported to 3.15: Adjust context]
Signed-off-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Tejun Heo 2014-04-09 11:07:30 -04:00 • committed by Greg Kroah-Hartman

parent f1a6b5ddc3

commit 0b2332fbef

4 changed files with 21 additions and 0 deletions

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1

fs/kernfs/dir.c

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5

fs/kernfs/kernfs-internal.h

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11

fs/kernfs/mount.c

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4

include/linux/kernfs.h

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