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UBIFS: fix constants initialization 

The c->min_idx_lebs constant depends on c->old_idx_sz, which
is read from the master node. This means that we have to
initialize c->min_idx_lebs only after we have read the master
node.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
This commit is contained in:
Artem Bityutskiy 2008-12-27 19:18:00 +02:00
parent c8f915913a
commit 79807d075a
1 changed files with 20 additions and 5 deletions
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25
fs/ubifs/super.c
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@ -602,7 +602,7 @@ static int bud_wbuf_callback(struct ubifs_info *c, int lnum, int free, int pad)
}
/*
* init_constants_late - initialize UBIFS constants.
* init_constants_sb - initialize UBIFS constants.
* @c: UBIFS file-system description object
*
* This is a helper function which initializes various UBIFS constants after
@ -610,7 +610,7 @@ static int bud_wbuf_callback(struct ubifs_info *c, int lnum, int free, int pad)
* makes sure they are all right. Returns zero in case of success and a
* negative error code in case of failure.
*/
static int init_constants_late(struct ubifs_info *c)
static int init_constants_sb(struct ubifs_info *c)
{
int tmp, err;
long long tmp64;
@ -687,6 +687,21 @@ static int init_constants_late(struct ubifs_info *c)
if (err)
return err;
return 0;
}
/*
* init_constants_master - initialize UBIFS constants.
* @c: UBIFS file-system description object
*
* This is a helper function which initializes various UBIFS constants after
* the master node has been read. It also checks various UBIFS parameters and
* makes sure they are all right.
*/
static void init_constants_master(struct ubifs_info *c)
{
long long tmp64;
c->min_idx_lebs = ubifs_calc_min_idx_lebs(c);
/*
@ -702,8 +717,6 @@ static int init_constants_late(struct ubifs_info *c)
tmp64 *= (long long)c->leb_size - c->leb_overhead;
tmp64 = ubifs_reported_space(c, tmp64);
c->block_cnt = tmp64 >> UBIFS_BLOCK_SHIFT;
return 0;
}
/**
@ -1138,7 +1151,7 @@ static int mount_ubifs(struct ubifs_info *c)
goto out_free;
}
err = init_constants_late(c);
err = init_constants_sb(c);
if (err)
goto out_free;
@ -1172,6 +1185,8 @@ static int mount_ubifs(struct ubifs_info *c)
if (err)
goto out_master;
init_constants_master(c);
if ((c->mst_node->flags & cpu_to_le32(UBIFS_MST_DIRTY)) != 0) {
ubifs_msg("recovery needed");
c->need_recovery = 1;