From 12095460f7f315f8ef67a55b2194195d325d48d7 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Wed, 20 Aug 2008 14:45:12 +0200 Subject: 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 Signed-off-by: Mark Fasheh --- fs/quota_v1.c | 25 +++++++++++++++++++------ 1 file changed, 19 insertions(+), 6 deletions(-) (limited to 'fs/quota_v1.c') 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; } -- cgit v1.2.2 From cf770c137122b78470a67ebd5498947869a09197 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Sun, 21 Sep 2008 23:17:53 +0200 Subject: quota: Move quotaio_v[12].h from include/linux/ to fs/ Since these include files are used only by implementation of quota formats, there's no need to have them in include/linux/. Signed-off-by: Jan Kara Signed-off-by: Mark Fasheh --- fs/quota_v1.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'fs/quota_v1.c') diff --git a/fs/quota_v1.c b/fs/quota_v1.c index 3e078eee5644..b4af1c69ad16 100644 --- a/fs/quota_v1.c +++ b/fs/quota_v1.c @@ -3,13 +3,14 @@ #include #include #include -#include #include #include #include #include +#include "quotaio_v1.h" + MODULE_AUTHOR("Jan Kara"); MODULE_DESCRIPTION("Old quota format support"); MODULE_LICENSE("GPL"); -- cgit v1.2.2