// SPDX-License-Identifier: GPL-2.0
/*
* Copyright ( c ) 2000 - 2001 , 2005 Silicon Graphics , Inc .
* All Rights Reserved .
*/
#include "xfs.h"
#include "xfs_fs.h"
#include "xfs_format.h"
#include "xfs_log_format.h"
#include "xfs_trans_resv.h"
#include "xfs_bit.h"
#include "xfs_shared.h"
#include "xfs_mount.h"
#include "xfs_ag.h"
#include "xfs_defer.h"
#include "xfs_trans.h"
#include "xfs_trans_priv.h"
#include "xfs_extfree_item.h"
#include "xfs_log.h"
#include "xfs_btree.h"
#include "xfs_rmap.h"
#include "xfs_alloc.h"
#include "xfs_bmap.h"
#include "xfs_trace.h"
#include "xfs_error.h"
#include "xfs_log_priv.h"
#include "xfs_log_recover.h"
#include "xfs_rtalloc.h"
#include "xfs_inode.h"
#include "xfs_rtbitmap.h"
#include "xfs_rtgroup.h"
#include "xfs_zone_alloc.h"
struct kmem_cache *xfs_efi_cache;
struct kmem_cache *xfs_efd_cache;
static const struct xfs_item_ops xfs_efi_item_ops;
static inline struct xfs_efi_log_item *EFI_ITEM(struct xfs_log_item *lip)
{
return container_of(lip, struct xfs_efi_log_item, efi_item);
}
STATIC void
xfs_efi_item_free(
struct xfs_efi_log_item *efip)
{
kvfree(efip->efi_item.li_lv_shadow);
if (efip->efi_format.efi_nextents > XFS_EFI_MAX_FAST_EXTENTS)
kfree(efip);
else
kmem_cache_free(xfs_efi_cache, efip);
}
/*
* Freeing the efi requires that we remove it from the AIL if it has already
* been placed there . However , the EFI may not yet have been placed in the AIL
* when called by xfs_efi_release ( ) from EFD processing due to the ordering of
* committed vs unpin operations in bulk insert operations . Hence the reference
* count to ensure only the last caller frees the EFI .
*/
STATIC void
xfs_efi_release(
struct xfs_efi_log_item *efip)
{
ASSERT(atomic_read(&efip->efi_refcount) > 0 );
if (!atomic_dec_and_test(&efip->efi_refcount))
return ;
xfs_trans_ail_delete(&efip->efi_item, 0 );
xfs_efi_item_free(efip);
}
STATIC void
xfs_efi_item_size(
struct xfs_log_item *lip,
int *nvecs,
int *nbytes)
{
struct xfs_efi_log_item *efip = EFI_ITEM(lip);
*nvecs += 1 ;
*nbytes += xfs_efi_log_format_sizeof(efip->efi_format.efi_nextents);
}
unsigned int xfs_efi_log_space(unsigned int nr)
{
return xlog_item_space(1 , xfs_efi_log_format_sizeof(nr));
}
/*
* This is called to fill in the vector of log iovecs for the
* given efi log item . We use only 1 iovec , and we point that
* at the efi_log_format structure embedded in the efi item .
* It is at this point that we assert that all of the extent
* slots in the efi item have been filled .
*/
STATIC void
xfs_efi_item_format(
struct xfs_log_item *lip,
struct xfs_log_vec *lv)
{
struct xfs_efi_log_item *efip = EFI_ITEM(lip);
struct xfs_log_iovec *vecp = NULL;
ASSERT(atomic_read(&efip->efi_next_extent) ==
efip->efi_format.efi_nextents);
ASSERT(lip->li_type == XFS_LI_EFI || lip->li_type == XFS_LI_EFI_RT);
efip->efi_format.efi_type = lip->li_type;
efip->efi_format.efi_size = 1 ;
xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_EFI_FORMAT, &efip->efi_format,
xfs_efi_log_format_sizeof(efip->efi_format.efi_nextents));
}
/*
* The unpin operation is the last place an EFI is manipulated in the log . It is
* either inserted in the AIL or aborted in the event of a log I / O error . In
* either case , the EFI transaction has been successfully committed to make it
* this far . Therefore , we expect whoever committed the EFI to either construct
* and commit the EFD or drop the EFD ' s reference in the event of error . Simply
* drop the log ' s EFI reference now that the log is done with it .
*/
STATIC void
xfs_efi_item_unpin(
struct xfs_log_item *lip,
int remove)
{
struct xfs_efi_log_item *efip = EFI_ITEM(lip);
xfs_efi_release(efip);
}
/*
* The EFI has been either committed or aborted if the transaction has been
* cancelled . If the transaction was cancelled , an EFD isn ' t going to be
* constructed and thus we free the EFI here directly .
*/
STATIC void
xfs_efi_item_release(
struct xfs_log_item *lip)
{
xfs_efi_release(EFI_ITEM(lip));
}
/*
* Allocate and initialize an efi item with the given number of extents .
*/
STATIC struct xfs_efi_log_item *
xfs_efi_init(
struct xfs_mount *mp,
unsigned short item_type,
uint nextents)
{
struct xfs_efi_log_item *efip;
ASSERT(item_type == XFS_LI_EFI || item_type == XFS_LI_EFI_RT);
ASSERT(nextents > 0 );
if (nextents > XFS_EFI_MAX_FAST_EXTENTS) {
efip = kzalloc(xfs_efi_log_item_sizeof(nextents),
GFP_KERNEL | __GFP_NOFAIL);
} else {
efip = kmem_cache_zalloc(xfs_efi_cache,
GFP_KERNEL | __GFP_NOFAIL);
}
xfs_log_item_init(mp, &efip->efi_item, item_type, &xfs_efi_item_ops);
efip->efi_format.efi_nextents = nextents;
efip->efi_format.efi_id = (uintptr_t)(void *)efip;
atomic_set(&efip->efi_next_extent, 0 );
atomic_set(&efip->efi_refcount, 2 );
return efip;
}
/*
* Copy an EFI format buffer from the given buf , and into the destination
* EFI format structure .
* The given buffer can be in 32 bit or 64 bit form ( which has different padding ) ,
* one of which will be the native format for this kernel .
* It will handle the conversion of formats if necessary .
*/
STATIC int
xfs_efi_copy_format(
struct kvec *buf,
struct xfs_efi_log_format *dst_efi_fmt)
{
struct xfs_efi_log_format *src_efi_fmt = buf->iov_base;
uint len, len32, len64, i;
len = xfs_efi_log_format_sizeof(src_efi_fmt->efi_nextents);
len32 = xfs_efi_log_format32_sizeof(src_efi_fmt->efi_nextents);
len64 = xfs_efi_log_format64_sizeof(src_efi_fmt->efi_nextents);
if (buf->iov_len == len) {
memcpy(dst_efi_fmt, src_efi_fmt,
offsetof(struct xfs_efi_log_format, efi_extents));
for (i = 0 ; i < src_efi_fmt->efi_nextents; i++)
memcpy(&dst_efi_fmt->efi_extents[i],
&src_efi_fmt->efi_extents[i],
sizeof (struct xfs_extent));
return 0 ;
} else if (buf->iov_len == len32) {
xfs_efi_log_format_32_t *src_efi_fmt_32 = buf->iov_base;
dst_efi_fmt->efi_type = src_efi_fmt_32->efi_type;
dst_efi_fmt->efi_size = src_efi_fmt_32->efi_size;
dst_efi_fmt->efi_nextents = src_efi_fmt_32->efi_nextents;
dst_efi_fmt->efi_id = src_efi_fmt_32->efi_id;
for (i = 0 ; i < dst_efi_fmt->efi_nextents; i++) {
dst_efi_fmt->efi_extents[i].ext_start =
src_efi_fmt_32->efi_extents[i].ext_start;
dst_efi_fmt->efi_extents[i].ext_len =
src_efi_fmt_32->efi_extents[i].ext_len;
}
return 0 ;
} else if (buf->iov_len == len64) {
xfs_efi_log_format_64_t *src_efi_fmt_64 = buf->iov_base;
dst_efi_fmt->efi_type = src_efi_fmt_64->efi_type;
dst_efi_fmt->efi_size = src_efi_fmt_64->efi_size;
dst_efi_fmt->efi_nextents = src_efi_fmt_64->efi_nextents;
dst_efi_fmt->efi_id = src_efi_fmt_64->efi_id;
for (i = 0 ; i < dst_efi_fmt->efi_nextents; i++) {
dst_efi_fmt->efi_extents[i].ext_start =
src_efi_fmt_64->efi_extents[i].ext_start;
dst_efi_fmt->efi_extents[i].ext_len =
src_efi_fmt_64->efi_extents[i].ext_len;
}
return 0 ;
}
XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, NULL, buf->iov_base,
buf->iov_len);
return -EFSCORRUPTED;
}
static inline struct xfs_efd_log_item *EFD_ITEM(struct xfs_log_item *lip)
{
return container_of(lip, struct xfs_efd_log_item, efd_item);
}
STATIC void
xfs_efd_item_free(struct xfs_efd_log_item *efdp)
{
kvfree(efdp->efd_item.li_lv_shadow);
if (efdp->efd_format.efd_nextents > XFS_EFD_MAX_FAST_EXTENTS)
kfree(efdp);
else
kmem_cache_free(xfs_efd_cache, efdp);
}
STATIC void
xfs_efd_item_size(
struct xfs_log_item *lip,
int *nvecs,
int *nbytes)
{
struct xfs_efd_log_item *efdp = EFD_ITEM(lip);
*nvecs += 1 ;
*nbytes += xfs_efd_log_format_sizeof(efdp->efd_format.efd_nextents);
}
unsigned int xfs_efd_log_space(unsigned int nr)
{
return xlog_item_space(1 , xfs_efd_log_format_sizeof(nr));
}
/*
* This is called to fill in the vector of log iovecs for the
* given efd log item . We use only 1 iovec , and we point that
* at the efd_log_format structure embedded in the efd item .
* It is at this point that we assert that all of the extent
* slots in the efd item have been filled .
*/
STATIC void
xfs_efd_item_format(
struct xfs_log_item *lip,
struct xfs_log_vec *lv)
{
struct xfs_efd_log_item *efdp = EFD_ITEM(lip);
struct xfs_log_iovec *vecp = NULL;
ASSERT(efdp->efd_next_extent == efdp->efd_format.efd_nextents);
ASSERT(lip->li_type == XFS_LI_EFD || lip->li_type == XFS_LI_EFD_RT);
efdp->efd_format.efd_type = lip->li_type;
efdp->efd_format.efd_size = 1 ;
xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_EFD_FORMAT, &efdp->efd_format,
xfs_efd_log_format_sizeof(efdp->efd_format.efd_nextents));
}
/*
* The EFD is either committed or aborted if the transaction is cancelled . If
* the transaction is cancelled , drop our reference to the EFI and free the EFD .
*/
STATIC void
xfs_efd_item_release(
struct xfs_log_item *lip)
{
struct xfs_efd_log_item *efdp = EFD_ITEM(lip);
xfs_efi_release(efdp->efd_efip);
xfs_efd_item_free(efdp);
}
static struct xfs_log_item *
xfs_efd_item_intent(
struct xfs_log_item *lip)
{
return &EFD_ITEM(lip)->efd_efip->efi_item;
}
static const struct xfs_item_ops xfs_efd_item_ops = {
.flags = XFS_ITEM_RELEASE_WHEN_COMMITTED |
XFS_ITEM_INTENT_DONE,
.iop_size = xfs_efd_item_size,
.iop_format = xfs_efd_item_format,
.iop_release = xfs_efd_item_release,
.iop_intent = xfs_efd_item_intent,
};
static inline struct xfs_extent_free_item *xefi_entry(const struct list_head *e)
{
return list_entry(e, struct xfs_extent_free_item, xefi_list);
}
static inline bool
xfs_efi_item_isrt(const struct xfs_log_item *lip)
{
ASSERT(lip->li_type == XFS_LI_EFI || lip->li_type == XFS_LI_EFI_RT);
return lip->li_type == XFS_LI_EFI_RT;
}
/*
* Fill the EFD with all extents from the EFI when we need to roll the
* transaction and continue with a new EFI .
*
* This simply copies all the extents in the EFI to the EFD rather than make
* assumptions about which extents in the EFI have already been processed . We
* currently keep the xefi list in the same order as the EFI extent list , but
* that may not always be the case . Copying everything avoids leaving a landmine
* were we fail to cancel all the extents in an EFI if the xefi list is
* processed in a different order to the extents in the EFI .
*/
static void
xfs_efd_from_efi(
struct xfs_efd_log_item *efdp)
{
struct xfs_efi_log_item *efip = efdp->efd_efip;
uint i;
ASSERT(efip->efi_format.efi_nextents > 0 );
ASSERT(efdp->efd_next_extent < efip->efi_format.efi_nextents);
for (i = 0 ; i < efip->efi_format.efi_nextents; i++) {
efdp->efd_format.efd_extents[i] =
efip->efi_format.efi_extents[i];
}
efdp->efd_next_extent = efip->efi_format.efi_nextents;
}
static void
xfs_efd_add_extent(
struct xfs_efd_log_item *efdp,
struct xfs_extent_free_item *xefi)
{
struct xfs_extent *extp;
ASSERT(efdp->efd_next_extent < efdp->efd_format.efd_nextents);
extp = &efdp->efd_format.efd_extents[efdp->efd_next_extent];
extp->ext_start = xefi->xefi_startblock;
extp->ext_len = xefi->xefi_blockcount;
efdp->efd_next_extent++;
}
/* Sort bmap items by AG. */
static int
xfs_extent_free_diff_items(
void *priv,
const struct list_head *a,
const struct list_head *b)
{
struct xfs_extent_free_item *ra = xefi_entry(a);
struct xfs_extent_free_item *rb = xefi_entry(b);
return ra->xefi_group->xg_gno - rb->xefi_group->xg_gno;
}
/* Log a free extent to the intent item. */
STATIC void
xfs_extent_free_log_item(
struct xfs_trans *tp,
struct xfs_efi_log_item *efip,
struct xfs_extent_free_item *xefi)
{
uint next_extent;
struct xfs_extent *extp;
/*
* atomic_inc_return gives us the value after the increment ;
* we want to use it as an array index so we need to subtract 1 from
* it .
*/
next_extent = atomic_inc_return(&efip->efi_next_extent) - 1 ;
ASSERT(next_extent < efip->efi_format.efi_nextents);
extp = &efip->efi_format.efi_extents[next_extent];
extp->ext_start = xefi->xefi_startblock;
extp->ext_len = xefi->xefi_blockcount;
}
static struct xfs_log_item *
__xfs_extent_free_create_intent(
struct xfs_trans *tp,
struct list_head *items,
unsigned int count,
bool sort,
unsigned short item_type)
{
struct xfs_mount *mp = tp->t_mountp;
struct xfs_efi_log_item *efip;
struct xfs_extent_free_item *xefi;
ASSERT(count > 0 );
efip = xfs_efi_init(mp, item_type, count);
if (sort)
list_sort(mp, items, xfs_extent_free_diff_items);
list_for_each_entry(xefi, items, xefi_list)
xfs_extent_free_log_item(tp, efip, xefi);
return &efip->efi_item;
}
static struct xfs_log_item *
xfs_extent_free_create_intent(
struct xfs_trans *tp,
struct list_head *items,
unsigned int count,
bool sort)
{
return __xfs_extent_free_create_intent(tp, items, count, sort,
XFS_LI_EFI);
}
static inline unsigned short
xfs_efd_type_from_efi(const struct xfs_efi_log_item *efip)
{
return xfs_efi_item_isrt(&efip->efi_item) ? XFS_LI_EFD_RT : XFS_LI_EFD;
}
/* Get an EFD so we can process all the free extents. */
static struct xfs_log_item *
xfs_extent_free_create_done(
struct xfs_trans *tp,
struct xfs_log_item *intent,
unsigned int count)
{
struct xfs_efi_log_item *efip = EFI_ITEM(intent);
struct xfs_efd_log_item *efdp;
ASSERT(count > 0 );
if (count > XFS_EFD_MAX_FAST_EXTENTS) {
efdp = kzalloc(xfs_efd_log_item_sizeof(count),
GFP_KERNEL | __GFP_NOFAIL);
} else {
efdp = kmem_cache_zalloc(xfs_efd_cache,
GFP_KERNEL | __GFP_NOFAIL);
}
xfs_log_item_init(tp->t_mountp, &efdp->efd_item,
xfs_efd_type_from_efi(efip), &xfs_efd_item_ops);
efdp->efd_efip = efip;
efdp->efd_format.efd_nextents = count;
efdp->efd_format.efd_efi_id = efip->efi_format.efi_id;
return &efdp->efd_item;
}
static inline const struct xfs_defer_op_type *
xefi_ops(
struct xfs_extent_free_item *xefi)
{
if (xfs_efi_is_realtime(xefi))
return &xfs_rtextent_free_defer_type;
if (xefi->xefi_agresv == XFS_AG_RESV_AGFL)
return &xfs_agfl_free_defer_type;
return &xfs_extent_free_defer_type;
}
/* Add this deferred EFI to the transaction. */
void
xfs_extent_free_defer_add(
struct xfs_trans *tp,
struct xfs_extent_free_item *xefi,
struct xfs_defer_pending **dfpp)
{
struct xfs_mount *mp = tp->t_mountp;
xefi->xefi_group = xfs_group_intent_get(mp, xefi->xefi_startblock,
xfs_efi_is_realtime(xefi) ? XG_TYPE_RTG : XG_TYPE_AG);
trace_xfs_extent_free_defer(mp, xefi);
*dfpp = xfs_defer_add(tp, &xefi->xefi_list, xefi_ops(xefi));
}
/* Cancel a free extent. */
STATIC void
xfs_extent_free_cancel_item(
struct list_head *item)
{
struct xfs_extent_free_item *xefi = xefi_entry(item);
xfs_group_intent_put(xefi->xefi_group);
kmem_cache_free(xfs_extfree_item_cache, xefi);
}
/* Process a free extent. */
STATIC int
xfs_extent_free_finish_item(
struct xfs_trans *tp,
struct xfs_log_item *done,
struct list_head *item,
struct xfs_btree_cur **state)
{
struct xfs_owner_info oinfo = { };
struct xfs_extent_free_item *xefi = xefi_entry(item);
struct xfs_efd_log_item *efdp = EFD_ITEM(done);
struct xfs_mount *mp = tp->t_mountp;
xfs_agblock_t agbno;
int error = 0 ;
agbno = XFS_FSB_TO_AGBNO(mp, xefi->xefi_startblock);
oinfo.oi_owner = xefi->xefi_owner;
if (xefi->xefi_flags & XFS_EFI_ATTR_FORK)
oinfo.oi_flags |= XFS_OWNER_INFO_ATTR_FORK;
if (xefi->xefi_flags & XFS_EFI_BMBT_BLOCK)
oinfo.oi_flags |= XFS_OWNER_INFO_BMBT_BLOCK;
trace_xfs_extent_free_deferred(mp, xefi);
/*
* If we need a new transaction to make progress , the caller will log a
* new EFI with the current contents . It will also log an EFD to cancel
* the existing EFI , and so we need to copy all the unprocessed extents
* in this EFI to the EFD so this works correctly .
*/
if (!(xefi->xefi_flags & XFS_EFI_CANCELLED))
error = __xfs_free_extent(tp, to_perag(xefi->xefi_group), agbno,
xefi->xefi_blockcount, &oinfo, xefi->xefi_agresv,
xefi->xefi_flags & XFS_EFI_SKIP_DISCARD);
if (error == -EAGAIN) {
xfs_efd_from_efi(efdp);
return error;
}
xfs_efd_add_extent(efdp, xefi);
xfs_extent_free_cancel_item(item);
return error;
}
/* Abort all pending EFIs. */
STATIC void
xfs_extent_free_abort_intent(
struct xfs_log_item *intent)
{
xfs_efi_release(EFI_ITEM(intent));
}
/*
* AGFL blocks are accounted differently in the reserve pools and are not
* inserted into the busy extent list .
*/
STATIC int
xfs_agfl_free_finish_item(
struct xfs_trans *tp,
struct xfs_log_item *done,
struct list_head *item,
struct xfs_btree_cur **state)
{
struct xfs_owner_info oinfo = { };
struct xfs_mount *mp = tp->t_mountp;
struct xfs_efd_log_item *efdp = EFD_ITEM(done);
struct xfs_extent_free_item *xefi = xefi_entry(item);
struct xfs_buf *agbp;
int error;
xfs_agblock_t agbno;
ASSERT(xefi->xefi_blockcount == 1 );
agbno = XFS_FSB_TO_AGBNO(mp, xefi->xefi_startblock);
oinfo.oi_owner = xefi->xefi_owner;
trace_xfs_agfl_free_deferred(mp, xefi);
error = xfs_alloc_read_agf(to_perag(xefi->xefi_group), tp, 0 , &agbp);
if (!error)
error = xfs_free_ag_extent(tp, agbp, agbno, 1 , &oinfo,
XFS_AG_RESV_AGFL);
xfs_efd_add_extent(efdp, xefi);
xfs_extent_free_cancel_item(&xefi->xefi_list);
return error;
}
/* Is this recovered EFI ok? */
static inline bool
xfs_efi_validate_ext(
struct xfs_mount *mp,
bool isrt,
struct xfs_extent *extp)
{
if (isrt)
return xfs_verify_rtbext(mp, extp->ext_start, extp->ext_len);
return xfs_verify_fsbext(mp, extp->ext_start, extp->ext_len);
}
static inline void
xfs_efi_recover_work(
struct xfs_mount *mp,
struct xfs_defer_pending *dfp,
bool isrt,
struct xfs_extent *extp)
{
struct xfs_extent_free_item *xefi;
xefi = kmem_cache_zalloc(xfs_extfree_item_cache,
GFP_KERNEL | __GFP_NOFAIL);
xefi->xefi_startblock = extp->ext_start;
xefi->xefi_blockcount = extp->ext_len;
xefi->xefi_agresv = XFS_AG_RESV_NONE;
xefi->xefi_owner = XFS_RMAP_OWN_UNKNOWN;
xefi->xefi_group = xfs_group_intent_get(mp, extp->ext_start,
isrt ? XG_TYPE_RTG : XG_TYPE_AG);
if (isrt)
xefi->xefi_flags |= XFS_EFI_REALTIME;
xfs_defer_add_item(dfp, &xefi->xefi_list);
}
/*
* Process an extent free intent item that was recovered from
* the log . We need to free the extents that it describes .
*/
STATIC int
xfs_extent_free_recover_work(
struct xfs_defer_pending *dfp,
struct list_head *capture_list)
{
struct xfs_trans_res resv;
struct xfs_log_item *lip = dfp->dfp_intent;
struct xfs_efi_log_item *efip = EFI_ITEM(lip);
struct xfs_mount *mp = lip->li_log->l_mp;
struct xfs_trans *tp;
int i;
int error = 0 ;
bool isrt = xfs_efi_item_isrt(lip);
/*
* First check the validity of the extents described by the EFI . If
* any are bad , then assume that all are bad and just toss the EFI .
* Mixing RT and non - RT extents in the same EFI item is not allowed .
*/
for (i = 0 ; i < efip->efi_format.efi_nextents; i++) {
if (!xfs_efi_validate_ext(mp, isrt,
&efip->efi_format.efi_extents[i])) {
XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
&efip->efi_format,
sizeof (efip->efi_format));
return -EFSCORRUPTED;
}
xfs_efi_recover_work(mp, dfp, isrt,
&efip->efi_format.efi_extents[i]);
}
resv = xlog_recover_resv(&M_RES(mp)->tr_itruncate);
error = xfs_trans_alloc(mp, &resv, 0 , 0 , 0 , &tp);
if (error)
return error;
error = xlog_recover_finish_intent(tp, dfp);
if (error == -EFSCORRUPTED)
XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
&efip->efi_format,
sizeof (efip->efi_format));
if (error)
goto abort_error;
return xfs_defer_ops_capture_and_commit(tp, capture_list);
abort_error:
xfs_trans_cancel(tp);
return error;
}
/* Relog an intent item to push the log tail forward. */
static struct xfs_log_item *
xfs_extent_free_relog_intent(
struct xfs_trans *tp,
struct xfs_log_item *intent,
struct xfs_log_item *done_item)
{
struct xfs_efd_log_item *efdp = EFD_ITEM(done_item);
struct xfs_efi_log_item *efip;
struct xfs_extent *extp;
unsigned int count;
count = EFI_ITEM(intent)->efi_format.efi_nextents;
extp = EFI_ITEM(intent)->efi_format.efi_extents;
ASSERT(intent->li_type == XFS_LI_EFI || intent->li_type == XFS_LI_EFI_RT);
efdp->efd_next_extent = count;
memcpy(efdp->efd_format.efd_extents, extp, count * sizeof (*extp));
efip = xfs_efi_init(tp->t_mountp, intent->li_type, count);
memcpy(efip->efi_format.efi_extents, extp, count * sizeof (*extp));
atomic_set(&efip->efi_next_extent, count);
return &efip->efi_item;
}
const struct xfs_defer_op_type xfs_extent_free_defer_type = {
.name = "extent_free" ,
.max_items = XFS_EFI_MAX_FAST_EXTENTS,
.create_intent = xfs_extent_free_create_intent,
.abort_intent = xfs_extent_free_abort_intent,
.create_done = xfs_extent_free_create_done,
.finish_item = xfs_extent_free_finish_item,
.cancel_item = xfs_extent_free_cancel_item,
.recover_work = xfs_extent_free_recover_work,
.relog_intent = xfs_extent_free_relog_intent,
};
/* sub-type with special handling for AGFL deferred frees */
const struct xfs_defer_op_type xfs_agfl_free_defer_type = {
.name = "agfl_free" ,
.max_items = XFS_EFI_MAX_FAST_EXTENTS,
.create_intent = xfs_extent_free_create_intent,
.abort_intent = xfs_extent_free_abort_intent,
.create_done = xfs_extent_free_create_done,
.finish_item = xfs_agfl_free_finish_item,
.cancel_item = xfs_extent_free_cancel_item,
.recover_work = xfs_extent_free_recover_work,
.relog_intent = xfs_extent_free_relog_intent,
};
#ifdef CONFIG_XFS_RT
/* Create a realtime extent freeing */
static struct xfs_log_item *
xfs_rtextent_free_create_intent(
struct xfs_trans *tp,
struct list_head *items,
unsigned int count,
bool sort)
{
return __xfs_extent_free_create_intent(tp, items, count, sort,
XFS_LI_EFI_RT);
}
/* Process a free realtime extent. */
STATIC int
xfs_rtextent_free_finish_item(
struct xfs_trans *tp,
struct xfs_log_item *done,
struct list_head *item,
struct xfs_btree_cur **state)
{
struct xfs_mount *mp = tp->t_mountp;
struct xfs_extent_free_item *xefi = xefi_entry(item);
struct xfs_efd_log_item *efdp = EFD_ITEM(done);
struct xfs_rtgroup **rtgp = (struct xfs_rtgroup **)state;
int error = 0 ;
trace_xfs_extent_free_deferred(mp, xefi);
if (xefi->xefi_flags & XFS_EFI_CANCELLED)
goto done;
if (*rtgp != to_rtg(xefi->xefi_group)) {
unsigned int lock_flags;
if (xfs_has_zoned(mp))
lock_flags = XFS_RTGLOCK_RMAP;
else
lock_flags = XFS_RTGLOCK_BITMAP;
*rtgp = to_rtg(xefi->xefi_group);
xfs_rtgroup_lock(*rtgp, lock_flags);
xfs_rtgroup_trans_join(tp, *rtgp, lock_flags);
}
if (xfs_has_zoned(mp)) {
error = xfs_zone_free_blocks(tp, *rtgp, xefi->xefi_startblock,
xefi->xefi_blockcount);
} else {
error = xfs_rtfree_blocks(tp, *rtgp, xefi->xefi_startblock,
xefi->xefi_blockcount);
}
if (error == -EAGAIN) {
xfs_efd_from_efi(efdp);
return error;
}
done:
xfs_efd_add_extent(efdp, xefi);
xfs_extent_free_cancel_item(item);
return error;
}
const struct xfs_defer_op_type xfs_rtextent_free_defer_type = {
.name = "rtextent_free" ,
.max_items = XFS_EFI_MAX_FAST_EXTENTS,
.create_intent = xfs_rtextent_free_create_intent,
.abort_intent = xfs_extent_free_abort_intent,
.create_done = xfs_extent_free_create_done,
.finish_item = xfs_rtextent_free_finish_item,
.cancel_item = xfs_extent_free_cancel_item,
.recover_work = xfs_extent_free_recover_work,
.relog_intent = xfs_extent_free_relog_intent,
};
#else
const struct xfs_defer_op_type xfs_rtextent_free_defer_type = {
.name = "rtextent_free" ,
};
#endif /* CONFIG_XFS_RT */
STATIC bool
xfs_efi_item_match(
struct xfs_log_item *lip,
uint64_t intent_id)
{
return EFI_ITEM(lip)->efi_format.efi_id == intent_id;
}
static const struct xfs_item_ops xfs_efi_item_ops = {
.flags = XFS_ITEM_INTENT,
.iop_size = xfs_efi_item_size,
.iop_format = xfs_efi_item_format,
.iop_unpin = xfs_efi_item_unpin,
.iop_release = xfs_efi_item_release,
.iop_match = xfs_efi_item_match,
};
/*
* This routine is called to create an in - core extent free intent
* item from the efi format structure which was logged on disk .
* It allocates an in - core efi , copies the extents from the format
* structure into it , and adds the efi to the AIL with the given
* LSN .
*/
STATIC int
xlog_recover_efi_commit_pass2(
struct xlog *log,
struct list_head *buffer_list,
struct xlog_recover_item *item,
xfs_lsn_t lsn)
{
struct xfs_mount *mp = log->l_mp;
struct xfs_efi_log_item *efip;
struct xfs_efi_log_format *efi_formatp;
int error;
efi_formatp = item->ri_buf[0 ].iov_base;
if (item->ri_buf[0 ].iov_len < xfs_efi_log_format_sizeof(0 )) {
XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
item->ri_buf[0 ].iov_base, item->ri_buf[0 ].iov_len);
return -EFSCORRUPTED;
}
efip = xfs_efi_init(mp, ITEM_TYPE(item), efi_formatp->efi_nextents);
error = xfs_efi_copy_format(&item->ri_buf[0 ], &efip->efi_format);
if (error) {
xfs_efi_item_free(efip);
return error;
}
atomic_set(&efip->efi_next_extent, efi_formatp->efi_nextents);
xlog_recover_intent_item(log, &efip->efi_item, lsn,
&xfs_extent_free_defer_type);
return 0 ;
}
const struct xlog_recover_item_ops xlog_efi_item_ops = {
.item_type = XFS_LI_EFI,
.commit_pass2 = xlog_recover_efi_commit_pass2,
};
#ifdef CONFIG_XFS_RT
STATIC int
xlog_recover_rtefi_commit_pass2(
struct xlog *log,
struct list_head *buffer_list,
struct xlog_recover_item *item,
xfs_lsn_t lsn)
{
struct xfs_mount *mp = log->l_mp;
struct xfs_efi_log_item *efip;
struct xfs_efi_log_format *efi_formatp;
int error;
efi_formatp = item->ri_buf[0 ].iov_base;
if (item->ri_buf[0 ].iov_len < xfs_efi_log_format_sizeof(0 )) {
XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
item->ri_buf[0 ].iov_base, item->ri_buf[0 ].iov_len);
return -EFSCORRUPTED;
}
efip = xfs_efi_init(mp, ITEM_TYPE(item), efi_formatp->efi_nextents);
error = xfs_efi_copy_format(&item->ri_buf[0 ], &efip->efi_format);
if (error) {
xfs_efi_item_free(efip);
return error;
}
atomic_set(&efip->efi_next_extent, efi_formatp->efi_nextents);
xlog_recover_intent_item(log, &efip->efi_item, lsn,
&xfs_rtextent_free_defer_type);
return 0 ;
}
#else
STATIC int
xlog_recover_rtefi_commit_pass2(
struct xlog *log,
struct list_head *buffer_list,
struct xlog_recover_item *item,
xfs_lsn_t lsn)
{
XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, log->l_mp,
item->ri_buf[0 ].iov_base, item->ri_buf[0 ].iov_len);
return -EFSCORRUPTED;
}
#endif
const struct xlog_recover_item_ops xlog_rtefi_item_ops = {
.item_type = XFS_LI_EFI_RT,
.commit_pass2 = xlog_recover_rtefi_commit_pass2,
};
/*
* This routine is called when an EFD format structure is found in a committed
* transaction in the log . Its purpose is to cancel the corresponding EFI if it
* was still in the log . To do this it searches the AIL for the EFI with an id
* equal to that in the EFD format structure . If we find it we drop the EFD
* reference , which removes the EFI from the AIL and frees it .
*/
STATIC int
xlog_recover_efd_commit_pass2(
struct xlog *log,
struct list_head *buffer_list,
struct xlog_recover_item *item,
xfs_lsn_t lsn)
{
struct xfs_efd_log_format *efd_formatp;
int buflen = item->ri_buf[0 ].iov_len;
efd_formatp = item->ri_buf[0 ].iov_base;
if (buflen < sizeof (struct xfs_efd_log_format)) {
XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, log->l_mp,
efd_formatp, buflen);
return -EFSCORRUPTED;
}
if (item->ri_buf[0 ].iov_len != xfs_efd_log_format32_sizeof(
efd_formatp->efd_nextents) &&
item->ri_buf[0 ].iov_len != xfs_efd_log_format64_sizeof(
efd_formatp->efd_nextents)) {
XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, log->l_mp,
efd_formatp, buflen);
return -EFSCORRUPTED;
}
xlog_recover_release_intent(log, XFS_LI_EFI, efd_formatp->efd_efi_id);
return 0 ;
}
const struct xlog_recover_item_ops xlog_efd_item_ops = {
.item_type = XFS_LI_EFD,
.commit_pass2 = xlog_recover_efd_commit_pass2,
};
#ifdef CONFIG_XFS_RT
STATIC int
xlog_recover_rtefd_commit_pass2(
struct xlog *log,
struct list_head *buffer_list,
struct xlog_recover_item *item,
xfs_lsn_t lsn)
{
struct xfs_efd_log_format *efd_formatp;
int buflen = item->ri_buf[0 ].iov_len;
efd_formatp = item->ri_buf[0 ].iov_base;
if (buflen < sizeof (struct xfs_efd_log_format)) {
XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, log->l_mp,
efd_formatp, buflen);
return -EFSCORRUPTED;
}
if (item->ri_buf[0 ].iov_len != xfs_efd_log_format32_sizeof(
efd_formatp->efd_nextents) &&
item->ri_buf[0 ].iov_len != xfs_efd_log_format64_sizeof(
efd_formatp->efd_nextents)) {
XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, log->l_mp,
efd_formatp, buflen);
return -EFSCORRUPTED;
}
xlog_recover_release_intent(log, XFS_LI_EFI_RT,
efd_formatp->efd_efi_id);
return 0 ;
}
#else
# define xlog_recover_rtefd_commit_pass2 xlog_recover_rtefi_commit_pass2
#endif
const struct xlog_recover_item_ops xlog_rtefd_item_ops = {
.item_type = XFS_LI_EFD_RT,
.commit_pass2 = xlog_recover_rtefd_commit_pass2,
};
Messung V0.5 in Prozent C=98 H=97 G=97
¤ Dauer der Verarbeitung: 0.17 Sekunden
(vorverarbeitet am 2026-09-28)
¤
*© Formatika GbR, Deutschland