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path: root/fs/xfs/xfs_fsmap.c
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Diffstat (limited to 'fs/xfs/xfs_fsmap.c')
-rw-r--r--fs/xfs/xfs_fsmap.c68
1 files changed, 37 insertions, 31 deletions
diff --git a/fs/xfs/xfs_fsmap.c b/fs/xfs/xfs_fsmap.c
index 7d0b09c1366e..48287caad28b 100644
--- a/fs/xfs/xfs_fsmap.c
+++ b/fs/xfs/xfs_fsmap.c
@@ -61,7 +61,7 @@ xfs_fsmap_to_internal(
static int
xfs_fsmap_owner_to_rmap(
struct xfs_rmap_irec *dest,
- struct xfs_fsmap *src)
+ const struct xfs_fsmap *src)
{
if (!(src->fmr_flags & FMR_OF_SPECIAL_OWNER)) {
dest->rm_owner = src->fmr_owner;
@@ -111,8 +111,8 @@ xfs_fsmap_owner_to_rmap(
/* Convert an rmapbt owner into an fsmap owner. */
static int
xfs_fsmap_owner_from_rmap(
- struct xfs_fsmap *dest,
- struct xfs_rmap_irec *src)
+ struct xfs_fsmap *dest,
+ const struct xfs_rmap_irec *src)
{
dest->fmr_flags = 0;
if (!XFS_RMAP_NON_INODE_OWNER(src->rm_owner)) {
@@ -171,7 +171,7 @@ struct xfs_getfsmap_info {
struct xfs_getfsmap_dev {
u32 dev;
int (*fn)(struct xfs_trans *tp,
- struct xfs_fsmap *keys,
+ const struct xfs_fsmap *keys,
struct xfs_getfsmap_info *info);
};
@@ -192,7 +192,7 @@ STATIC int
xfs_getfsmap_is_shared(
struct xfs_trans *tp,
struct xfs_getfsmap_info *info,
- struct xfs_rmap_irec *rec,
+ const struct xfs_rmap_irec *rec,
bool *stat)
{
struct xfs_mount *mp = tp->t_mountp;
@@ -202,7 +202,7 @@ xfs_getfsmap_is_shared(
int error;
*stat = false;
- if (!xfs_sb_version_hasreflink(&mp->m_sb))
+ if (!xfs_has_reflink(mp))
return 0;
/* rt files will have no perag structure */
if (!info->pag)
@@ -245,7 +245,7 @@ STATIC int
xfs_getfsmap_helper(
struct xfs_trans *tp,
struct xfs_getfsmap_info *info,
- struct xfs_rmap_irec *rec,
+ const struct xfs_rmap_irec *rec,
xfs_daddr_t rec_daddr)
{
struct xfs_fsmap fmr;
@@ -347,7 +347,7 @@ out:
STATIC int
xfs_getfsmap_datadev_helper(
struct xfs_btree_cur *cur,
- struct xfs_rmap_irec *rec,
+ const struct xfs_rmap_irec *rec,
void *priv)
{
struct xfs_mount *mp = cur->bc_mp;
@@ -365,7 +365,7 @@ xfs_getfsmap_datadev_helper(
STATIC int
xfs_getfsmap_datadev_bnobt_helper(
struct xfs_btree_cur *cur,
- struct xfs_alloc_rec_incore *rec,
+ const struct xfs_alloc_rec_incore *rec,
void *priv)
{
struct xfs_mount *mp = cur->bc_mp;
@@ -389,7 +389,7 @@ xfs_getfsmap_datadev_bnobt_helper(
static void
xfs_getfsmap_set_irec_flags(
struct xfs_rmap_irec *irec,
- struct xfs_fsmap *fmr)
+ const struct xfs_fsmap *fmr)
{
irec->rm_flags = 0;
if (fmr->fmr_flags & FMR_OF_ATTR_FORK)
@@ -404,7 +404,7 @@ xfs_getfsmap_set_irec_flags(
STATIC int
xfs_getfsmap_logdev(
struct xfs_trans *tp,
- struct xfs_fsmap *keys,
+ const struct xfs_fsmap *keys,
struct xfs_getfsmap_info *info)
{
struct xfs_mount *mp = tp->t_mountp;
@@ -451,7 +451,7 @@ xfs_getfsmap_logdev(
STATIC int
xfs_getfsmap_rtdev_rtbitmap_helper(
struct xfs_trans *tp,
- struct xfs_rtalloc_rec *rec,
+ const struct xfs_rtalloc_rec *rec,
void *priv)
{
struct xfs_mount *mp = tp->t_mountp;
@@ -473,7 +473,7 @@ xfs_getfsmap_rtdev_rtbitmap_helper(
STATIC int
__xfs_getfsmap_rtdev(
struct xfs_trans *tp,
- struct xfs_fsmap *keys,
+ const struct xfs_fsmap *keys,
int (*query_fn)(struct xfs_trans *,
struct xfs_getfsmap_info *),
struct xfs_getfsmap_info *info)
@@ -481,16 +481,14 @@ __xfs_getfsmap_rtdev(
struct xfs_mount *mp = tp->t_mountp;
xfs_fsblock_t start_fsb;
xfs_fsblock_t end_fsb;
- xfs_daddr_t eofs;
+ uint64_t eofs;
int error = 0;
eofs = XFS_FSB_TO_BB(mp, mp->m_sb.sb_rblocks);
if (keys[0].fmr_physical >= eofs)
return 0;
- if (keys[1].fmr_physical >= eofs)
- keys[1].fmr_physical = eofs - 1;
start_fsb = XFS_BB_TO_FSBT(mp, keys[0].fmr_physical);
- end_fsb = XFS_BB_TO_FSB(mp, keys[1].fmr_physical);
+ end_fsb = XFS_BB_TO_FSB(mp, min(eofs - 1, keys[1].fmr_physical));
/* Set up search keys */
info->low.rm_startblock = start_fsb;
@@ -523,27 +521,37 @@ xfs_getfsmap_rtdev_rtbitmap_query(
{
struct xfs_rtalloc_rec alow = { 0 };
struct xfs_rtalloc_rec ahigh = { 0 };
+ struct xfs_mount *mp = tp->t_mountp;
int error;
- xfs_ilock(tp->t_mountp->m_rbmip, XFS_ILOCK_SHARED);
+ xfs_ilock(mp->m_rbmip, XFS_ILOCK_SHARED);
+ /*
+ * Set up query parameters to return free rtextents covering the range
+ * we want.
+ */
alow.ar_startext = info->low.rm_startblock;
ahigh.ar_startext = info->high.rm_startblock;
- do_div(alow.ar_startext, tp->t_mountp->m_sb.sb_rextsize);
- if (do_div(ahigh.ar_startext, tp->t_mountp->m_sb.sb_rextsize))
+ do_div(alow.ar_startext, mp->m_sb.sb_rextsize);
+ if (do_div(ahigh.ar_startext, mp->m_sb.sb_rextsize))
ahigh.ar_startext++;
error = xfs_rtalloc_query_range(tp, &alow, &ahigh,
xfs_getfsmap_rtdev_rtbitmap_helper, info);
if (error)
goto err;
- /* Report any gaps at the end of the rtbitmap */
+ /*
+ * Report any gaps at the end of the rtbitmap by simulating a null
+ * rmap starting at the block after the end of the query range.
+ */
info->last = true;
+ ahigh.ar_startext = min(mp->m_sb.sb_rextents, ahigh.ar_startext);
+
error = xfs_getfsmap_rtdev_rtbitmap_helper(tp, &ahigh, info);
if (error)
goto err;
err:
- xfs_iunlock(tp->t_mountp->m_rbmip, XFS_ILOCK_SHARED);
+ xfs_iunlock(mp->m_rbmip, XFS_ILOCK_SHARED);
return error;
}
@@ -551,7 +559,7 @@ err:
STATIC int
xfs_getfsmap_rtdev_rtbitmap(
struct xfs_trans *tp,
- struct xfs_fsmap *keys,
+ const struct xfs_fsmap *keys,
struct xfs_getfsmap_info *info)
{
info->missing_owner = XFS_FMR_OWN_UNKNOWN;
@@ -564,7 +572,7 @@ xfs_getfsmap_rtdev_rtbitmap(
STATIC int
__xfs_getfsmap_datadev(
struct xfs_trans *tp,
- struct xfs_fsmap *keys,
+ const struct xfs_fsmap *keys,
struct xfs_getfsmap_info *info,
int (*query_fn)(struct xfs_trans *,
struct xfs_getfsmap_info *,
@@ -579,16 +587,14 @@ __xfs_getfsmap_datadev(
xfs_fsblock_t end_fsb;
xfs_agnumber_t start_ag;
xfs_agnumber_t end_ag;
- xfs_daddr_t eofs;
+ uint64_t eofs;
int error = 0;
eofs = XFS_FSB_TO_BB(mp, mp->m_sb.sb_dblocks);
if (keys[0].fmr_physical >= eofs)
return 0;
- if (keys[1].fmr_physical >= eofs)
- keys[1].fmr_physical = eofs - 1;
start_fsb = XFS_DADDR_TO_FSB(mp, keys[0].fmr_physical);
- end_fsb = XFS_DADDR_TO_FSB(mp, keys[1].fmr_physical);
+ end_fsb = XFS_DADDR_TO_FSB(mp, min(eofs - 1, keys[1].fmr_physical));
/*
* Convert the fsmap low/high keys to AG based keys. Initialize
@@ -716,7 +722,7 @@ xfs_getfsmap_datadev_rmapbt_query(
STATIC int
xfs_getfsmap_datadev_rmapbt(
struct xfs_trans *tp,
- struct xfs_fsmap *keys,
+ const struct xfs_fsmap *keys,
struct xfs_getfsmap_info *info)
{
info->missing_owner = XFS_FMR_OWN_FREE;
@@ -751,7 +757,7 @@ xfs_getfsmap_datadev_bnobt_query(
STATIC int
xfs_getfsmap_datadev_bnobt(
struct xfs_trans *tp,
- struct xfs_fsmap *keys,
+ const struct xfs_fsmap *keys,
struct xfs_getfsmap_info *info)
{
struct xfs_alloc_rec_incore akeys[2];
@@ -859,7 +865,7 @@ xfs_getfsmap(
return -EINVAL;
use_rmap = capable(CAP_SYS_ADMIN) &&
- xfs_sb_version_hasrmapbt(&mp->m_sb);
+ xfs_has_rmapbt(mp);
head->fmh_entries = 0;
/* Set up our device handlers. */
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.