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xfs: rename new' to delta' in xfs_growfs_data_private()

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It actually means the delta block count of growfs. Rename it in order
to make it clear. Also introduce nb_div to avoid reusing `delta`.

Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Gao Xiang <hsiangkao@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
This commit is contained in:
Gao Xiang 2021-02-02 18:24:06 -08:00 committed by Darrick J. Wong
parent bc41fa5321
commit ce5e1062e2
1 changed files with 10 additions and 10 deletions
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20
fs/xfs/xfs_fsops.c
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@ -32,8 +32,8 @@ xfs_growfs_data_private(
int error;
xfs_agnumber_t nagcount;
xfs_agnumber_t nagimax = 0;
xfs_rfsblock_t nb, nb_mod;
xfs_rfsblock_t new;
xfs_rfsblock_t nb, nb_div, nb_mod;
xfs_rfsblock_t delta;
xfs_agnumber_t oagcount;
xfs_trans_t *tp;
struct aghdr_init_data id = {};
@ -50,16 +50,16 @@ xfs_growfs_data_private(
return error;
xfs_buf_relse(bp);
new = nb; /* use new as a temporary here */
nb_mod = do_div(new, mp->m_sb.sb_agblocks);
nagcount = new + (nb_mod != 0);
nb_div = nb;
nb_mod = do_div(nb_div, mp->m_sb.sb_agblocks);
nagcount = nb_div + (nb_mod != 0);
if (nb_mod && nb_mod < XFS_MIN_AG_BLOCKS) {
nagcount--;
nb = (xfs_rfsblock_t)nagcount * mp->m_sb.sb_agblocks;
if (nb < mp->m_sb.sb_dblocks)
return -EINVAL;
}
new = nb - mp->m_sb.sb_dblocks;
delta = nb - mp->m_sb.sb_dblocks;
oagcount = mp->m_sb.sb_agcount;
/* allocate the new per-ag structures */
@ -89,7 +89,7 @@ xfs_growfs_data_private(
INIT_LIST_HEAD(&id.buffer_list);
for (id.agno = nagcount - 1;
id.agno >= oagcount;
id.agno--, new -= id.agsize) {
id.agno--, delta -= id.agsize) {
if (id.agno == nagcount - 1)
id.agsize = nb -
@ -110,8 +110,8 @@ xfs_growfs_data_private(
xfs_trans_agblocks_delta(tp, id.nfree);
/* If there are new blocks in the old last AG, extend it. */
if (new) {
error = xfs_ag_extend_space(mp, tp, &id, new);
if (delta) {
error = xfs_ag_extend_space(mp, tp, &id, delta);
if (error)
goto out_trans_cancel;
}
@ -143,7 +143,7 @@ xfs_growfs_data_private(
* If we expanded the last AG, free the per-AG reservation
* so we can reinitialize it with the new size.
*/
if (new) {
if (delta) {
struct xfs_perag *pag;
pag = xfs_perag_get(mp, id.agno);