/*
* The number of blocks per AG that we withhold from xfs_mod_fdblocks to
* guarantee that we can refill the AGFL prior to allocating space in a nearly
- * full AG. Although the the space described by the free space btrees, the
+ * full AG. Although the space described by the free space btrees, the
* blocks used by the freesp btrees themselves, and the blocks owned by the
* AGFL are counted in the ondisk fdblocks, it's a mistake to let the ondisk
* free space in the AG drop so low that the free space btrees cannot refill an
int *stat) /* output: success/failure */
{
struct xfs_mount *mp = cur->bc_mp;
- xfs_agnumber_t agno = cur->bc_ag.pag->pag_agno;
+ struct xfs_perag *pag = cur->bc_ag.pag;
union xfs_btree_rec *rec;
int error;
goto out_bad_rec;
/* check for valid extent range, including overflow */
- if (!xfs_verify_agbno(mp, agno, *bno))
+ if (!xfs_verify_agbno(pag, *bno))
goto out_bad_rec;
if (*bno > *bno + *len)
goto out_bad_rec;
- if (!xfs_verify_agbno(mp, agno, *bno + *len - 1))
+ if (!xfs_verify_agbno(pag, *bno + *len - 1))
goto out_bad_rec;
return 0;
out_bad_rec:
xfs_warn(mp,
"%s Freespace BTree record corruption in AG %d detected!",
- cur->bc_btnum == XFS_BTNUM_BNO ? "Block" : "Size", agno);
+ cur->bc_btnum == XFS_BTNUM_BNO ? "Block" : "Size",
+ pag->pag_agno);
xfs_warn(mp,
"start block 0x%x block count 0x%x", *bno, *len);
return -EFSCORRUPTED;
/*
* Read in the allocation group free block array.
*/
-int /* error */
+int
xfs_alloc_read_agfl(
- xfs_mount_t *mp, /* mount point structure */
- xfs_trans_t *tp, /* transaction pointer */
- xfs_agnumber_t agno, /* allocation group number */
- struct xfs_buf **bpp) /* buffer for the ag free block array */
+ struct xfs_perag *pag,
+ struct xfs_trans *tp,
+ struct xfs_buf **bpp)
{
- struct xfs_buf *bp; /* return value */
- int error;
+ struct xfs_mount *mp = pag->pag_mount;
+ struct xfs_buf *bp;
+ int error;
- ASSERT(agno != NULLAGNUMBER);
error = xfs_trans_read_buf(
mp, tp, mp->m_ddev_targp,
- XFS_AG_DADDR(mp, agno, XFS_AGFL_DADDR(mp)),
+ XFS_AG_DADDR(mp, pag->pag_agno, XFS_AGFL_DADDR(mp)),
XFS_FSS_TO_BB(mp, 1), 0, &bp, &xfs_agfl_buf_ops);
if (error)
return error;
be32_to_cpu(agf->agf_flcount) <= args->minleft)
goto out;
- error = xfs_alloc_get_freelist(args->tp, args->agbp, &fbno, 0);
+ error = xfs_alloc_get_freelist(args->pag, args->tp, args->agbp,
+ &fbno, 0);
if (error)
goto error;
if (fbno == NULLAGBLOCK)
ASSERT(tp->t_flags & XFS_TRANS_PERM_LOG_RES);
if (!pag->pagf_init) {
- error = xfs_alloc_read_agf(mp, tp, args->agno, flags, &agbp);
+ error = xfs_alloc_read_agf(pag, tp, flags, &agbp);
if (error) {
/* Couldn't lock the AGF so skip this AG. */
if (error == -EAGAIN)
* Can fail if we're not blocking on locks, and it's held.
*/
if (!agbp) {
- error = xfs_alloc_read_agf(mp, tp, args->agno, flags, &agbp);
+ error = xfs_alloc_read_agf(pag, tp, flags, &agbp);
if (error) {
/* Couldn't lock the AGF so skip this AG. */
if (error == -EAGAIN)
else
targs.oinfo = XFS_RMAP_OINFO_AG;
while (!(flags & XFS_ALLOC_FLAG_NOSHRINK) && pag->pagf_flcount > need) {
- error = xfs_alloc_get_freelist(tp, agbp, &bno, 0);
+ error = xfs_alloc_get_freelist(pag, tp, agbp, &bno, 0);
if (error)
goto out_agbp_relse;
targs.alignment = targs.minlen = targs.prod = 1;
targs.type = XFS_ALLOCTYPE_THIS_AG;
targs.pag = pag;
- error = xfs_alloc_read_agfl(mp, tp, targs.agno, &agflbp);
+ error = xfs_alloc_read_agfl(pag, tp, &agflbp);
if (error)
goto out_agbp_relse;
* Put each allocated block on the list.
*/
for (bno = targs.agbno; bno < targs.agbno + targs.len; bno++) {
- error = xfs_alloc_put_freelist(tp, agbp,
+ error = xfs_alloc_put_freelist(pag, tp, agbp,
agflbp, bno, 0);
if (error)
goto out_agflbp_relse;
*/
int
xfs_alloc_get_freelist(
+ struct xfs_perag *pag,
struct xfs_trans *tp,
struct xfs_buf *agbp,
xfs_agblock_t *bnop,
int error;
uint32_t logflags;
struct xfs_mount *mp = tp->t_mountp;
- struct xfs_perag *pag;
/*
* Freelist is empty, give up.
/*
* Read the array of free blocks.
*/
- error = xfs_alloc_read_agfl(mp, tp, be32_to_cpu(agf->agf_seqno),
- &agflbp);
+ error = xfs_alloc_read_agfl(pag, tp, &agflbp);
if (error)
return error;
if (be32_to_cpu(agf->agf_flfirst) == xfs_agfl_size(mp))
agf->agf_flfirst = 0;
- pag = agbp->b_pag;
ASSERT(!pag->pagf_agflreset);
be32_add_cpu(&agf->agf_flcount, -1);
pag->pagf_flcount--;
xfs_trans_log_buf(tp, bp, (uint)first, (uint)last);
}
-/*
- * Interface for inode allocation to force the pag data to be initialized.
- */
-int /* error */
-xfs_alloc_pagf_init(
- xfs_mount_t *mp, /* file system mount structure */
- xfs_trans_t *tp, /* transaction pointer */
- xfs_agnumber_t agno, /* allocation group number */
- int flags) /* XFS_ALLOC_FLAGS_... */
-{
- struct xfs_buf *bp;
- int error;
-
- error = xfs_alloc_read_agf(mp, tp, agno, flags, &bp);
- if (!error)
- xfs_trans_brelse(tp, bp);
- return error;
-}
-
/*
* Put the block on the freelist for the allocation group.
*/
int
xfs_alloc_put_freelist(
+ struct xfs_perag *pag,
struct xfs_trans *tp,
struct xfs_buf *agbp,
struct xfs_buf *agflbp,
{
struct xfs_mount *mp = tp->t_mountp;
struct xfs_agf *agf = agbp->b_addr;
- struct xfs_perag *pag;
__be32 *blockp;
int error;
uint32_t logflags;
__be32 *agfl_bno;
int startoff;
- if (!agflbp && (error = xfs_alloc_read_agfl(mp, tp,
- be32_to_cpu(agf->agf_seqno), &agflbp)))
- return error;
+ if (!agflbp) {
+ error = xfs_alloc_read_agfl(pag, tp, &agflbp);
+ if (error)
+ return error;
+ }
+
be32_add_cpu(&agf->agf_fllast, 1);
if (be32_to_cpu(agf->agf_fllast) == xfs_agfl_size(mp))
agf->agf_fllast = 0;
- pag = agbp->b_pag;
ASSERT(!pag->pagf_agflreset);
be32_add_cpu(&agf->agf_flcount, 1);
pag->pagf_flcount++;
/*
* Read in the allocation group header (free/alloc section).
*/
-int /* error */
+int
xfs_read_agf(
- struct xfs_mount *mp, /* mount point structure */
- struct xfs_trans *tp, /* transaction pointer */
- xfs_agnumber_t agno, /* allocation group number */
- int flags, /* XFS_BUF_ */
- struct xfs_buf **bpp) /* buffer for the ag freelist header */
+ struct xfs_perag *pag,
+ struct xfs_trans *tp,
+ int flags,
+ struct xfs_buf **agfbpp)
{
- int error;
+ struct xfs_mount *mp = pag->pag_mount;
+ int error;
- trace_xfs_read_agf(mp, agno);
+ trace_xfs_read_agf(pag->pag_mount, pag->pag_agno);
- ASSERT(agno != NULLAGNUMBER);
error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp,
- XFS_AG_DADDR(mp, agno, XFS_AGF_DADDR(mp)),
- XFS_FSS_TO_BB(mp, 1), flags, bpp, &xfs_agf_buf_ops);
+ XFS_AG_DADDR(mp, pag->pag_agno, XFS_AGF_DADDR(mp)),
+ XFS_FSS_TO_BB(mp, 1), flags, agfbpp, &xfs_agf_buf_ops);
if (error)
return error;
- ASSERT(!(*bpp)->b_error);
- xfs_buf_set_ref(*bpp, XFS_AGF_REF);
+ xfs_buf_set_ref(*agfbpp, XFS_AGF_REF);
return 0;
}
/*
- * Read in the allocation group header (free/alloc section).
+ * Read in the allocation group header (free/alloc section) and initialise the
+ * perag structure if necessary. If the caller provides @agfbpp, then return the
+ * locked buffer to the caller, otherwise free it.
*/
-int /* error */
+int
xfs_alloc_read_agf(
- struct xfs_mount *mp, /* mount point structure */
- struct xfs_trans *tp, /* transaction pointer */
- xfs_agnumber_t agno, /* allocation group number */
- int flags, /* XFS_ALLOC_FLAG_... */
- struct xfs_buf **bpp) /* buffer for the ag freelist header */
+ struct xfs_perag *pag,
+ struct xfs_trans *tp,
+ int flags,
+ struct xfs_buf **agfbpp)
{
- struct xfs_agf *agf; /* ag freelist header */
- struct xfs_perag *pag; /* per allocation group data */
+ struct xfs_buf *agfbp;
+ struct xfs_agf *agf;
int error;
int allocbt_blks;
- trace_xfs_alloc_read_agf(mp, agno);
+ trace_xfs_alloc_read_agf(pag->pag_mount, pag->pag_agno);
/* We don't support trylock when freeing. */
ASSERT((flags & (XFS_ALLOC_FLAG_FREEING | XFS_ALLOC_FLAG_TRYLOCK)) !=
(XFS_ALLOC_FLAG_FREEING | XFS_ALLOC_FLAG_TRYLOCK));
- ASSERT(agno != NULLAGNUMBER);
- error = xfs_read_agf(mp, tp, agno,
+ error = xfs_read_agf(pag, tp,
(flags & XFS_ALLOC_FLAG_TRYLOCK) ? XBF_TRYLOCK : 0,
- bpp);
+ &agfbp);
if (error)
return error;
- ASSERT(!(*bpp)->b_error);
- agf = (*bpp)->b_addr;
- pag = (*bpp)->b_pag;
+ agf = agfbp->b_addr;
if (!pag->pagf_init) {
pag->pagf_freeblks = be32_to_cpu(agf->agf_freeblks);
pag->pagf_btreeblks = be32_to_cpu(agf->agf_btreeblks);
be32_to_cpu(agf->agf_levels[XFS_BTNUM_RMAPi]);
pag->pagf_refcount_level = be32_to_cpu(agf->agf_refcount_level);
pag->pagf_init = 1;
- pag->pagf_agflreset = xfs_agfl_needs_reset(mp, agf);
+ pag->pagf_agflreset = xfs_agfl_needs_reset(pag->pag_mount, agf);
/*
* Update the in-core allocbt counter. Filter out the rmapbt
* counter only tracks non-root blocks.
*/
allocbt_blks = pag->pagf_btreeblks;
- if (xfs_has_rmapbt(mp))
+ if (xfs_has_rmapbt(pag->pag_mount))
allocbt_blks -= be32_to_cpu(agf->agf_rmap_blocks) - 1;
if (allocbt_blks > 0)
- atomic64_add(allocbt_blks, &mp->m_allocbt_blks);
+ atomic64_add(allocbt_blks,
+ &pag->pag_mount->m_allocbt_blks);
}
#ifdef DEBUG
- else if (!xfs_is_shutdown(mp)) {
+ else if (!xfs_is_shutdown(pag->pag_mount)) {
ASSERT(pag->pagf_freeblks == be32_to_cpu(agf->agf_freeblks));
ASSERT(pag->pagf_btreeblks == be32_to_cpu(agf->agf_btreeblks));
ASSERT(pag->pagf_flcount == be32_to_cpu(agf->agf_flcount));
be32_to_cpu(agf->agf_levels[XFS_BTNUM_CNTi]));
}
#endif
+ if (agfbpp)
+ *agfbpp = agfbp;
+ else
+ xfs_trans_brelse(tp, agfbp);
return 0;
}
projects / people / ms / linux.git / blobdiff