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| author | Jan Kara <jack@suse.cz> | 2008-08-20 14:45:12 +0200 |
|---|---|---|
| committer | Mark Fasheh <mfasheh@suse.com> | 2009-01-05 08:36:55 -0800 |
| commit | 12095460f7f315f8ef67a55b2194195d325d48d7 (patch) | |
| tree | 4e878139ccd29a2adeb2a9fa6fcd9c279e8ce6f4 /fs/quota_v1.c | |
| parent | 74f783af95c982aef6d3a1415275650dcf511666 (diff) | |
| download | linux-stable-12095460f7f315f8ef67a55b2194195d325d48d7.tar.gz linux-stable-12095460f7f315f8ef67a55b2194195d325d48d7.tar.bz2 linux-stable-12095460f7f315f8ef67a55b2194195d325d48d7.zip | |
quota: Increase size of variables for limits and inode usage
So far quota was fine with quota block limits and inode limits/numbers in
a 32-bit type. Now with rapid increase in storage sizes there are coming
requests to be able to handle quota limits above 4TB / more that 2^32 inodes.
So bump up sizes of types in mem_dqblk structure to 64-bits to be able to
handle this. Also update inode allocation / checking functions to use qsize_t
and make global structure keep quota limits in bytes so that things are
consistent.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'fs/quota_v1.c')
| -rw-r--r-- | fs/quota_v1.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/fs/quota_v1.c b/fs/quota_v1.c index 5ae15b13eeb0..3e078eee5644 100644 --- a/fs/quota_v1.c +++ b/fs/quota_v1.c @@ -14,14 +14,27 @@ MODULE_AUTHOR("Jan Kara"); MODULE_DESCRIPTION("Old quota format support"); MODULE_LICENSE("GPL"); +#define QUOTABLOCK_BITS 10 +#define QUOTABLOCK_SIZE (1 << QUOTABLOCK_BITS) + +static inline qsize_t v1_stoqb(qsize_t space) +{ + return (space + QUOTABLOCK_SIZE - 1) >> QUOTABLOCK_BITS; +} + +static inline qsize_t v1_qbtos(qsize_t blocks) +{ + return blocks << QUOTABLOCK_BITS; +} + static void v1_disk2mem_dqblk(struct mem_dqblk *m, struct v1_disk_dqblk *d) { m->dqb_ihardlimit = d->dqb_ihardlimit; m->dqb_isoftlimit = d->dqb_isoftlimit; m->dqb_curinodes = d->dqb_curinodes; - m->dqb_bhardlimit = d->dqb_bhardlimit; - m->dqb_bsoftlimit = d->dqb_bsoftlimit; - m->dqb_curspace = ((qsize_t)d->dqb_curblocks) << QUOTABLOCK_BITS; + m->dqb_bhardlimit = v1_qbtos(d->dqb_bhardlimit); + m->dqb_bsoftlimit = v1_qbtos(d->dqb_bsoftlimit); + m->dqb_curspace = v1_qbtos(d->dqb_curblocks); m->dqb_itime = d->dqb_itime; m->dqb_btime = d->dqb_btime; } @@ -31,9 +44,9 @@ static void v1_mem2disk_dqblk(struct v1_disk_dqblk *d, struct mem_dqblk *m) d->dqb_ihardlimit = m->dqb_ihardlimit; d->dqb_isoftlimit = m->dqb_isoftlimit; d->dqb_curinodes = m->dqb_curinodes; - d->dqb_bhardlimit = m->dqb_bhardlimit; - d->dqb_bsoftlimit = m->dqb_bsoftlimit; - d->dqb_curblocks = toqb(m->dqb_curspace); + d->dqb_bhardlimit = v1_stoqb(m->dqb_bhardlimit); + d->dqb_bsoftlimit = v1_stoqb(m->dqb_bsoftlimit); + d->dqb_curblocks = v1_stoqb(m->dqb_curspace); d->dqb_itime = m->dqb_itime; d->dqb_btime = m->dqb_btime; } |