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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_v2.c | |
| parent | quota: Add callbacks for allocating and destroying dquot structures (diff) | |
| download | linux-dev-12095460f7f315f8ef67a55b2194195d325d48d7.tar.xz linux-dev-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_v2.c')
| -rw-r--r-- | fs/quota_v2.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/fs/quota_v2.c b/fs/quota_v2.c index b53827dc02d9..51c4717f7c6a 100644 --- a/fs/quota_v2.c +++ b/fs/quota_v2.c @@ -26,6 +26,19 @@ typedef char *dqbuf_t; #define GETIDINDEX(id, depth) (((id) >> ((V2_DQTREEDEPTH-(depth)-1)*8)) & 0xff) #define GETENTRIES(buf) ((struct v2_disk_dqblk *)(((char *)buf)+sizeof(struct v2_disk_dqdbheader))) +#define QUOTABLOCK_BITS 10 +#define QUOTABLOCK_SIZE (1 << QUOTABLOCK_BITS) + +static inline qsize_t v2_stoqb(qsize_t space) +{ + return (space + QUOTABLOCK_SIZE - 1) >> QUOTABLOCK_BITS; +} + +static inline qsize_t v2_qbtos(qsize_t blocks) +{ + return blocks << QUOTABLOCK_BITS; +} + /* Check whether given file is really vfsv0 quotafile */ static int v2_check_quota_file(struct super_block *sb, int type) { @@ -104,8 +117,8 @@ static void disk2memdqb(struct mem_dqblk *m, struct v2_disk_dqblk *d) m->dqb_isoftlimit = le32_to_cpu(d->dqb_isoftlimit); m->dqb_curinodes = le32_to_cpu(d->dqb_curinodes); m->dqb_itime = le64_to_cpu(d->dqb_itime); - m->dqb_bhardlimit = le32_to_cpu(d->dqb_bhardlimit); - m->dqb_bsoftlimit = le32_to_cpu(d->dqb_bsoftlimit); + m->dqb_bhardlimit = v2_qbtos(le32_to_cpu(d->dqb_bhardlimit)); + m->dqb_bsoftlimit = v2_qbtos(le32_to_cpu(d->dqb_bsoftlimit)); m->dqb_curspace = le64_to_cpu(d->dqb_curspace); m->dqb_btime = le64_to_cpu(d->dqb_btime); } @@ -116,8 +129,8 @@ static void mem2diskdqb(struct v2_disk_dqblk *d, struct mem_dqblk *m, qid_t id) d->dqb_isoftlimit = cpu_to_le32(m->dqb_isoftlimit); d->dqb_curinodes = cpu_to_le32(m->dqb_curinodes); d->dqb_itime = cpu_to_le64(m->dqb_itime); - d->dqb_bhardlimit = cpu_to_le32(m->dqb_bhardlimit); - d->dqb_bsoftlimit = cpu_to_le32(m->dqb_bsoftlimit); + d->dqb_bhardlimit = cpu_to_le32(v2_qbtos(m->dqb_bhardlimit)); + d->dqb_bsoftlimit = cpu_to_le32(v2_qbtos(m->dqb_bsoftlimit)); d->dqb_curspace = cpu_to_le64(m->dqb_curspace); d->dqb_btime = cpu_to_le64(m->dqb_btime); d->dqb_id = cpu_to_le32(id); |