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MFC r204472:

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Add assertions for FAT bitmap state.
This commit is contained in:
Konstantin Belousov 2010-03-24 14:43:19 +00:00
parent 05ecce0c28
commit 255ca65791
1 changed files with 8 additions and 0 deletions
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8
sys/fs/msdosfs/msdosfs_fat.c
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@ -413,7 +413,12 @@ usemap_alloc(pmp, cn)
{
MSDOSFS_ASSERT_MP_LOCKED(pmp);
KASSERT((pmp->pm_inusemap[cn / N_INUSEBITS] & (1 << (cn % N_INUSEBITS)))
== 0, ("Allocating used sector %ld %ld %x", cn, cn % N_INUSEBITS,
(unsigned)pmp->pm_inusemap[cn / N_INUSEBITS]));
pmp->pm_inusemap[cn / N_INUSEBITS] |= 1 << (cn % N_INUSEBITS);
KASSERT(pmp->pm_freeclustercount > 0, ("usemap_alloc: too little"));
pmp->pm_freeclustercount--;
}
@ -425,6 +430,9 @@ usemap_free(pmp, cn)
MSDOSFS_ASSERT_MP_LOCKED(pmp);
pmp->pm_freeclustercount++;
KASSERT((pmp->pm_inusemap[cn / N_INUSEBITS] & (1 << (cn % N_INUSEBITS)))
!= 0, ("Freeing unused sector %ld %ld %x", cn, cn % N_INUSEBITS,
(unsigned)pmp->pm_inusemap[cn / N_INUSEBITS]));
pmp->pm_inusemap[cn / N_INUSEBITS] &= ~(1 << (cn % N_INUSEBITS));
}