Christoph Hellwig 5af7926ff3 enforce ->sync_fs is only called for rw superblock ...

Make sure a superblock really is writeable by checking MS_RDONLY
under s_umount.  sync_filesystems needed some re-arragement for
that, but all but one sync_filesystem caller had the correct locking
already so that we could add that check there.  cachefiles grew
s_umount locking.

I've also added a WARN_ON to sync_filesystem to assert this for
future callers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

2009-06-11 21:36:06 -04:00

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bind.c

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daemon.c

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interface.c

enforce ->sync_fs is only called for rw superblock

2009-06-11 21:36:06 -04:00

internal.h

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Kconfig

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key.c

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main.c

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Makefile

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namei.c

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proc.c

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rdwr.c

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security.c

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xattr.c

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