ocfs2: copy fs uuid to superblock
Currently, maximal number of cleancache enabled filesystems equals 32, which is insufficient nowadays, because a Linux host can have hundreds of containers on board, each of which might want its own filesystem. This patch set targets at removing this limitation - see patch 4 for more details. Patches 1-3 prepare the code for this change. This patch (of 4): This will allow us to remove the uuid argument from cleancache_init_shared_fs. Signed-off-by: Vladimir Davydov <vdavydov@parallels.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Stefan Hengelein <ilendir@googlemail.com> Cc: Florian Schmaus <fschmaus@gmail.com> Cc: Andor Daam <andor.daam@googlemail.com> Cc: Dan Magenheimer <dan.magenheimer@oracle.com> Cc: Bob Liu <lliubbo@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -2070,6 +2070,8 @@ static int ocfs2_initialize_super(struct super_block *sb,
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cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits);
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bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits);
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sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits);
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memcpy(sb->s_uuid, di->id2.i_super.s_uuid,
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sizeof(di->id2.i_super.s_uuid));
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osb->osb_dx_mask = (1 << (cbits - bbits)) - 1;
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