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quota: Implement quota format with 64-bit space and inode limits

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So far the maximum quota space limit was 4TB. Apparently this isn't enough
for Lustre guys anymore. So implement new quota format which raises block
limits to 2^64 bytes. Also store number of inodes and inode limits in
64-bit variables as 2^32 files isn't that insanely high anymore.

The first version of the patch has been developed by Andrew Perepechko
<Andrew.Perepechko@Sun.COM>.

CC: Andrew.Perepechko@Sun.COM
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Jan Kara
2009-11-16 18:09:47 +01:00
parent 3067393005
commit 498c60153e
4 changed files with 153 additions and 38 deletions
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fs/quota/Kconfig
+5 -3
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@@ -46,12 +46,14 @@ config QFMT_V1
format say Y here.
config QFMT_V2
tristate "Quota format v2 support"
tristate "Quota format vfsv0 and vfsv1 support"
depends on QUOTA
select QUOTA_TREE
help
This quota format allows using quotas with 32-bit UIDs/GIDs. If you
need this functionality say Y here.
This config option enables kernel support for vfsv0 and vfsv1 quota
formats. Both these formats support 32-bit UIDs/GIDs and vfsv1 format
also supports 64-bit inode and block quota limits. If you need this
functionality say Y here.
config QUOTACTL
bool