unsigned blocksize, iblock, pos;
struct buffer_head *bh, *dibh;
struct page *page;
- void *kaddr;
- struct gfs2_quota *qp;
- s64 value;
- int err = -EIO;
+ void *kaddr, *ptr;
+ struct gfs2_quota q, *qp;
+ int err, nbytes;
u64 size;
if (gfs2_is_stuffed(ip))
gfs2_unstuff_dinode(ip, NULL);
-
+
+ memset(&q, 0, sizeof(struct gfs2_quota));
+ err = gfs2_internal_read(ip, NULL, (char *)&q, &loc, sizeof(q));
+ if (err < 0)
+ return err;
+
+ err = -EIO;
+ qp = &q;
+ qp->qu_value = be64_to_cpu(qp->qu_value);
+ qp->qu_value += change;
+ qp->qu_value = cpu_to_be64(qp->qu_value);
+ qd->qd_qb.qb_value = qp->qu_value;
+ if (fdq) {
+ if (fdq->d_fieldmask & FS_DQ_BSOFT) {
+ qp->qu_warn = cpu_to_be64(fdq->d_blk_softlimit);
+ qd->qd_qb.qb_warn = qp->qu_warn;
+ }
+ if (fdq->d_fieldmask & FS_DQ_BHARD) {
+ qp->qu_limit = cpu_to_be64(fdq->d_blk_hardlimit);
+ qd->qd_qb.qb_limit = qp->qu_limit;
+ }
+ }
+
+ /* Write the quota into the quota file on disk */
+ ptr = qp;
+ nbytes = sizeof(struct gfs2_quota);
+get_a_page:
page = grab_cache_page(mapping, index);
if (!page)
return -ENOMEM;
if (!buffer_mapped(bh)) {
gfs2_block_map(inode, iblock, bh, 1);
if (!buffer_mapped(bh))
- goto unlock;
+ goto unlock_out;
+ /* If it's a newly allocated disk block for quota, zero it */
+ if (buffer_new(bh)) {
+ memset(bh->b_data, 0, bh->b_size);
+ set_buffer_uptodate(bh);
+ }
}
if (PageUptodate(page))
ll_rw_block(READ_META, 1, &bh);
wait_on_buffer(bh);
if (!buffer_uptodate(bh))
- goto unlock;
+ goto unlock_out;
}
gfs2_trans_add_bh(ip->i_gl, bh, 0);
kaddr = kmap_atomic(page, KM_USER0);
- qp = kaddr + offset;
- value = (s64)be64_to_cpu(qp->qu_value) + change;
- qp->qu_value = cpu_to_be64(value);
- qd->qd_qb.qb_value = qp->qu_value;
- if (fdq) {
- if (fdq->d_fieldmask & FS_DQ_BSOFT) {
- qp->qu_warn = cpu_to_be64(fdq->d_blk_softlimit);
- qd->qd_qb.qb_warn = qp->qu_warn;
- }
- if (fdq->d_fieldmask & FS_DQ_BHARD) {
- qp->qu_limit = cpu_to_be64(fdq->d_blk_hardlimit);
- qd->qd_qb.qb_limit = qp->qu_limit;
- }
- }
+ if (offset + sizeof(struct gfs2_quota) > PAGE_CACHE_SIZE)
+ nbytes = PAGE_CACHE_SIZE - offset;
+ memcpy(kaddr + offset, ptr, nbytes);
flush_dcache_page(page);
kunmap_atomic(kaddr, KM_USER0);
+ unlock_page(page);
+ page_cache_release(page);
+ /* If quota straddles page boundary, we need to update the rest of the
+ * quota at the beginning of the next page */
+ if (offset != 0) { /* first page, offset is closer to PAGE_CACHE_SIZE */
+ ptr = ptr + nbytes;
+ nbytes = sizeof(struct gfs2_quota) - nbytes;
+ offset = 0;
+ index++;
+ goto get_a_page;
+ }
+
+ /* Update the disk inode timestamp and size (if extended) */
err = gfs2_meta_inode_buffer(ip, &dibh);
if (err)
- goto unlock;
+ goto out;
size = loc + sizeof(struct gfs2_quota);
if (size > inode->i_size) {
brelse(dibh);
mark_inode_dirty(inode);
-unlock:
+out:
+ return err;
+unlock_out:
unlock_page(page);
page_cache_release(page);
return err;
* rgrp since it won't be allocated during the transaction
*/
al->al_requested = 1;
- /* +1 in the end for block requested above for unstuffing */
- blocks = num_qd * data_blocks + RES_DINODE + num_qd + 1;
+ /* +3 in the end for unstuffing block, inode size update block
+ * and another block in case quota straddles page boundary and
+ * two blocks need to be updated instead of 1 */
+ blocks = num_qd * data_blocks + RES_DINODE + num_qd + 3;
if (nalloc)
al->al_requested += nalloc * (data_blocks + ind_blocks);
memset(fqs, 0, sizeof(struct fs_quota_stat));
fqs->qs_version = FS_QSTAT_VERSION;
- if (sdp->sd_args.ar_quota == GFS2_QUOTA_ON)
- fqs->qs_flags = (XFS_QUOTA_UDQ_ENFD | XFS_QUOTA_GDQ_ENFD);
- else if (sdp->sd_args.ar_quota == GFS2_QUOTA_ACCOUNT)
- fqs->qs_flags = (XFS_QUOTA_UDQ_ACCT | XFS_QUOTA_GDQ_ACCT);
+
+ switch (sdp->sd_args.ar_quota) {
+ case GFS2_QUOTA_ON:
+ fqs->qs_flags |= (XFS_QUOTA_UDQ_ENFD | XFS_QUOTA_GDQ_ENFD);
+ /*FALLTHRU*/
+ case GFS2_QUOTA_ACCOUNT:
+ fqs->qs_flags |= (XFS_QUOTA_UDQ_ACCT | XFS_QUOTA_GDQ_ACCT);
+ break;
+ case GFS2_QUOTA_OFF:
+ break;
+ }
+
if (sdp->sd_quota_inode) {
fqs->qs_uquota.qfs_ino = GFS2_I(sdp->sd_quota_inode)->i_no_addr;
fqs->qs_uquota.qfs_nblks = sdp->sd_quota_inode->i_blocks;
return 0;
}
-static int gfs2_xquota_get(struct super_block *sb, int type, qid_t id,
- struct fs_disk_quota *fdq)
+static int gfs2_get_dqblk(struct super_block *sb, int type, qid_t id,
+ struct fs_disk_quota *fdq)
{
struct gfs2_sbd *sdp = sb->s_fs_info;
struct gfs2_quota_lvb *qlvb;
/* GFS2 only supports a subset of the XFS fields */
#define GFS2_FIELDMASK (FS_DQ_BSOFT|FS_DQ_BHARD)
-static int gfs2_xquota_set(struct super_block *sb, int type, qid_t id,
- struct fs_disk_quota *fdq)
+static int gfs2_set_dqblk(struct super_block *sb, int type, qid_t id,
+ struct fs_disk_quota *fdq)
{
struct gfs2_sbd *sdp = sb->s_fs_info;
struct gfs2_inode *ip = GFS2_I(sdp->sd_quota_inode);
const struct quotactl_ops gfs2_quotactl_ops = {
.quota_sync = gfs2_quota_sync,
.get_xstate = gfs2_quota_get_xstate,
- .get_xquota = gfs2_xquota_get,
- .set_xquota = gfs2_xquota_set,
+ .get_dqblk = gfs2_get_dqblk,
+ .set_dqblk = gfs2_set_dqblk,
};
git.openpandora.org / pandora-kernel.git / blobdiff