diff options
| author | Tao Ma <tao.ma@oracle.com> | 2010-09-19 07:42:28 +0200 |
|---|---|---|
| committer | Joel Becker <joel.becker@oracle.com> | 2010-09-23 23:16:47 +0200 |
| commit | 4a452de4fdfe4dbb27e491904d8bfaf1262bdff4 (patch) | |
| tree | 94b4e9fb4fc31ede4721bab8f2e9281bef034d79 /fs/ocfs2/reservations.c | |
| parent | ocfs2: Use cpu_to_le16 for e_leaf_clusters in ocfs2_bg_discontig_add_extent. (diff) | |
| download | linux-4a452de4fdfe4dbb27e491904d8bfaf1262bdff4.tar.xz linux-4a452de4fdfe4dbb27e491904d8bfaf1262bdff4.zip | |
ocfs2: Move 'wanted' into parens of ocfs2_resmap_resv_bits.
The first time I read the function ocfs2_resmap_resv_bits, I consider
about what 'wanted' will be used and consider about the comments.
Then I find it is only used if the reservation is empty. ;)
So we'd better move it to the parens so that it make the code more
readable, what's more, ocfs2_resmap_resv_bits is used so frequently
and we should save some cpus.
Acked-by: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Diffstat (limited to '')
| -rw-r--r-- | fs/ocfs2/reservations.c | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/fs/ocfs2/reservations.c b/fs/ocfs2/reservations.c index d8b6e4259b80..3e78db361bc7 100644 --- a/fs/ocfs2/reservations.c +++ b/fs/ocfs2/reservations.c @@ -732,25 +732,23 @@ int ocfs2_resmap_resv_bits(struct ocfs2_reservation_map *resmap, struct ocfs2_alloc_reservation *resv, int *cstart, int *clen) { - unsigned int wanted = *clen; - if (resv == NULL || ocfs2_resmap_disabled(resmap)) return -ENOSPC; spin_lock(&resv_lock); - /* - * We don't want to over-allocate for temporary - * windows. Otherwise, we run the risk of fragmenting the - * allocation space. - */ - wanted = ocfs2_resv_window_bits(resmap, resv); - if ((resv->r_flags & OCFS2_RESV_FLAG_TMP) || wanted < *clen) - wanted = *clen; - if (ocfs2_resv_empty(resv)) { - mlog(0, "empty reservation, find new window\n"); + /* + * We don't want to over-allocate for temporary + * windows. Otherwise, we run the risk of fragmenting the + * allocation space. + */ + unsigned int wanted = ocfs2_resv_window_bits(resmap, resv); + if ((resv->r_flags & OCFS2_RESV_FLAG_TMP) || wanted < *clen) + wanted = *clen; + + mlog(0, "empty reservation, find new window\n"); /* * Try to get a window here. If it works, we must fall * through and test the bitmap . This avoids some |