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| author | Tao Ma <tao.ma@oracle.com> | 2010-04-08 08:33:02 (GMT) |
|---|---|---|
| committer | Joel Becker <joel.becker@oracle.com> | 2010-05-06 01:18:09 (GMT) |
| commit | b065556a7d1a9205403db77a318a5c5aa530e701 (patch) | |
| tree | fd8ef1e5e67c624c9fb04689e4a4765e2e59acf8 /fs/ocfs2/reservations.h | |
| parent | 4b37fcb7d41ce3b9264b9562d6ffd62db9294bd1 (diff) | |
| download | linux-fsl-qoriq-b065556a7d1a9205403db77a318a5c5aa530e701.tar.xz | |
ocfs2: make ocfs2_adjust_resv_from_alloc simple.
When we allocate some bits from the reservation, we always
allocate from the r_start(see ocfs2_resmap_resv_bits).
So there should be no reason to check between r_start
and start. And I don't think we will change this behaviour
later by allocating from some bits after r_start. Why not make
ocfs2_adjust_resv_from_alloc simple for now?
The only chance we have to adjust the reservation is when we haven't
reached the end. With this patch, the function is more readable.
Note:
btw, this patch also fixes an original bug in the function
which I haven't found before.
if (end < ocfs2_resv_end(resv))
rhs = end - ocfs2_resv_end(resv);
This code is of course buggy. ;)
Signed-off-by: Tao Ma <tao.ma@oracle.com>
Acked-by: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Diffstat (limited to 'fs/ocfs2/reservations.h')
| -rw-r--r-- | fs/ocfs2/reservations.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/ocfs2/reservations.h b/fs/ocfs2/reservations.h index 25b0c0e..1e49cc2 100644 --- a/fs/ocfs2/reservations.h +++ b/fs/ocfs2/reservations.h @@ -149,7 +149,8 @@ int ocfs2_resmap_resv_bits(struct ocfs2_reservation_map *resmap, * reservation. But we must always call this function when bits are claimed. * Internally, the reservations code will use this information to mark the * reservations bitmap. If resv is passed, it's next allocation window will be - * calculated. + * calculated. It also expects that 'cstart' is the same as we passed back + * from ocfs2_resmap_resv_bits(). */ void ocfs2_resmap_claimed_bits(struct ocfs2_reservation_map *resmap, struct ocfs2_alloc_reservation *resv, |