@@ -46,13 +46,16 @@ STATIC int __xfs_refcount_cow_free(struct xfs_btree_cur *rcur,
int
xfs_refcount_lookup_le(
struct xfs_btree_cur *cur,
+ enum xfs_rcext_domain domain,
xfs_agblock_t bno,
int *stat)
{
- trace_xfs_refcount_lookup(cur->bc_mp, cur->bc_ag.pag->pag_agno, bno,
+ trace_xfs_refcount_lookup(cur->bc_mp, cur->bc_ag.pag->pag_agno,
+ bno | (domain == XFS_RCDOM_COW ? XFS_REFC_COW_START : 0),
XFS_LOOKUP_LE);
cur->bc_rec.rc.rc_startblock = bno;
cur->bc_rec.rc.rc_blockcount = 0;
+ cur->bc_rec.rc.rc_domain = domain;
return xfs_btree_lookup(cur, XFS_LOOKUP_LE, stat);
}
@@ -63,13 +66,16 @@ xfs_refcount_lookup_le(
int
xfs_refcount_lookup_ge(
struct xfs_btree_cur *cur,
+ enum xfs_rcext_domain domain,
xfs_agblock_t bno,
int *stat)
{
- trace_xfs_refcount_lookup(cur->bc_mp, cur->bc_ag.pag->pag_agno, bno,
+ trace_xfs_refcount_lookup(cur->bc_mp, cur->bc_ag.pag->pag_agno,
+ bno | (domain == XFS_RCDOM_COW ? XFS_REFC_COW_START : 0),
XFS_LOOKUP_GE);
cur->bc_rec.rc.rc_startblock = bno;
cur->bc_rec.rc.rc_blockcount = 0;
+ cur->bc_rec.rc.rc_domain = domain;
return xfs_btree_lookup(cur, XFS_LOOKUP_GE, stat);
}
@@ -80,13 +86,16 @@ xfs_refcount_lookup_ge(
int
xfs_refcount_lookup_eq(
struct xfs_btree_cur *cur,
+ enum xfs_rcext_domain domain,
xfs_agblock_t bno,
int *stat)
{
- trace_xfs_refcount_lookup(cur->bc_mp, cur->bc_ag.pag->pag_agno, bno,
+ trace_xfs_refcount_lookup(cur->bc_mp, cur->bc_ag.pag->pag_agno,
+ bno | (domain == XFS_RCDOM_COW ? XFS_REFC_COW_START : 0),
XFS_LOOKUP_LE);
cur->bc_rec.rc.rc_startblock = bno;
cur->bc_rec.rc.rc_blockcount = 0;
+ cur->bc_rec.rc.rc_domain = domain;
return xfs_btree_lookup(cur, XFS_LOOKUP_EQ, stat);
}
@@ -96,7 +105,17 @@ xfs_refcount_btrec_to_irec(
const union xfs_btree_rec *rec,
struct xfs_refcount_irec *irec)
{
- irec->rc_startblock = be32_to_cpu(rec->refc.rc_startblock);
+ __u32 start;
+
+ start = be32_to_cpu(rec->refc.rc_startblock);
+ if (start & XFS_REFC_COW_START) {
+ start &= ~XFS_REFC_COW_START;
+ irec->rc_domain = XFS_RCDOM_COW;
+ } else {
+ irec->rc_domain = XFS_RCDOM_SHARED;
+ }
+
+ irec->rc_startblock = start;
irec->rc_blockcount = be32_to_cpu(rec->refc.rc_blockcount);
irec->rc_refcount = be32_to_cpu(rec->refc.rc_refcount);
}
@@ -114,7 +133,6 @@ xfs_refcount_get_rec(
struct xfs_perag *pag = cur->bc_ag.pag;
union xfs_btree_rec *rec;
int error;
- xfs_agblock_t realstart;
error = xfs_btree_get_rec(cur, &rec, stat);
if (error || !*stat)
@@ -124,22 +142,18 @@ xfs_refcount_get_rec(
if (irec->rc_blockcount == 0 || irec->rc_blockcount > MAXREFCEXTLEN)
goto out_bad_rec;
- /* handle special COW-staging state */
- realstart = irec->rc_startblock;
- if (realstart & XFS_REFC_COW_START) {
- if (irec->rc_refcount != 1)
- goto out_bad_rec;
- realstart &= ~XFS_REFC_COW_START;
- } else if (irec->rc_refcount < 2) {
+ /* handle special COW-staging domain */
+ if (irec->rc_domain == XFS_RCDOM_COW && irec->rc_refcount != 1)
+ goto out_bad_rec;
+ if (irec->rc_domain == XFS_RCDOM_SHARED && irec->rc_refcount < 2)
goto out_bad_rec;
- }
/* check for valid extent range, including overflow */
- if (!xfs_verify_agbno(pag, realstart))
+ if (!xfs_verify_agbno(pag, irec->rc_startblock))
goto out_bad_rec;
- if (realstart > realstart + irec->rc_blockcount)
+ if (irec->rc_startblock > irec->rc_startblock + irec->rc_blockcount)
goto out_bad_rec;
- if (!xfs_verify_agbno(pag, realstart + irec->rc_blockcount - 1))
+ if (!xfs_verify_agbno(pag, irec->rc_startblock + irec->rc_blockcount - 1))
goto out_bad_rec;
if (irec->rc_refcount == 0 || irec->rc_refcount > MAXREFCOUNT)
@@ -169,12 +183,19 @@ xfs_refcount_update(
struct xfs_refcount_irec *irec)
{
union xfs_btree_rec rec;
+ __u32 start;
int error;
trace_xfs_refcount_update(cur->bc_mp, cur->bc_ag.pag->pag_agno, irec);
- rec.refc.rc_startblock = cpu_to_be32(irec->rc_startblock);
+
+ start = irec->rc_startblock & ~XFS_REFC_COW_START;
+ if (irec->rc_domain == XFS_RCDOM_COW)
+ start |= XFS_REFC_COW_START;
+
+ rec.refc.rc_startblock = cpu_to_be32(start);
rec.refc.rc_blockcount = cpu_to_be32(irec->rc_blockcount);
rec.refc.rc_refcount = cpu_to_be32(irec->rc_refcount);
+
error = xfs_btree_update(cur, &rec);
if (error)
trace_xfs_refcount_update_error(cur->bc_mp,
@@ -196,9 +217,12 @@ xfs_refcount_insert(
int error;
trace_xfs_refcount_insert(cur->bc_mp, cur->bc_ag.pag->pag_agno, irec);
+
cur->bc_rec.rc.rc_startblock = irec->rc_startblock;
cur->bc_rec.rc.rc_blockcount = irec->rc_blockcount;
cur->bc_rec.rc.rc_refcount = irec->rc_refcount;
+ cur->bc_rec.rc.rc_domain = irec->rc_domain;
+
error = xfs_btree_insert(cur, i);
if (error)
goto out_error;
@@ -244,7 +268,8 @@ xfs_refcount_delete(
}
if (error)
goto out_error;
- error = xfs_refcount_lookup_ge(cur, irec.rc_startblock, &found_rec);
+ error = xfs_refcount_lookup_ge(cur, irec.rc_domain, irec.rc_startblock,
+ &found_rec);
out_error:
if (error)
trace_xfs_refcount_delete_error(cur->bc_mp,
@@ -343,6 +368,7 @@ xfs_refc_next(
STATIC int
xfs_refcount_split_extent(
struct xfs_btree_cur *cur,
+ enum xfs_rcext_domain domain,
xfs_agblock_t agbno,
bool *shape_changed)
{
@@ -351,7 +377,7 @@ xfs_refcount_split_extent(
int error;
*shape_changed = false;
- error = xfs_refcount_lookup_le(cur, agbno, &found_rec);
+ error = xfs_refcount_lookup_le(cur, domain, agbno, &found_rec);
if (error)
goto out_error;
if (!found_rec)
@@ -364,6 +390,9 @@ xfs_refcount_split_extent(
error = -EFSCORRUPTED;
goto out_error;
}
+
+ if (rcext.rc_domain != domain)
+ return 0;
if (rcext.rc_startblock == agbno || xfs_refc_next(&rcext) <= agbno)
return 0;
@@ -412,6 +441,9 @@ xfs_refcount_merge_center_extents(
int error;
int found_rec;
+ ASSERT(left->rc_domain == center->rc_domain);
+ ASSERT(right->rc_domain == center->rc_domain);
+
trace_xfs_refcount_merge_center_extents(cur->bc_mp,
cur->bc_ag.pag->pag_agno, left, center, right);
@@ -423,8 +455,8 @@ xfs_refcount_merge_center_extents(
* call removes the center and the second one removes the right
* extent.
*/
- error = xfs_refcount_lookup_ge(cur, center->rc_startblock,
- &found_rec);
+ error = xfs_refcount_lookup_ge(cur, center->rc_domain,
+ center->rc_startblock, &found_rec);
if (error)
goto out_error;
if (XFS_IS_CORRUPT(cur->bc_mp, found_rec != 1)) {
@@ -451,8 +483,8 @@ xfs_refcount_merge_center_extents(
}
/* Enlarge the left extent. */
- error = xfs_refcount_lookup_le(cur, left->rc_startblock,
- &found_rec);
+ error = xfs_refcount_lookup_le(cur, left->rc_domain,
+ left->rc_startblock, &found_rec);
if (error)
goto out_error;
if (XFS_IS_CORRUPT(cur->bc_mp, found_rec != 1)) {
@@ -488,13 +520,15 @@ xfs_refcount_merge_left_extent(
int error;
int found_rec;
+ ASSERT(left->rc_domain == cleft->rc_domain);
+
trace_xfs_refcount_merge_left_extent(cur->bc_mp,
cur->bc_ag.pag->pag_agno, left, cleft);
/* If the extent at agbno (cleft) wasn't synthesized, remove it. */
if (cleft->rc_refcount > 1) {
- error = xfs_refcount_lookup_le(cur, cleft->rc_startblock,
- &found_rec);
+ error = xfs_refcount_lookup_le(cur, cleft->rc_domain,
+ cleft->rc_startblock, &found_rec);
if (error)
goto out_error;
if (XFS_IS_CORRUPT(cur->bc_mp, found_rec != 1)) {
@@ -512,8 +546,8 @@ xfs_refcount_merge_left_extent(
}
/* Enlarge the left extent. */
- error = xfs_refcount_lookup_le(cur, left->rc_startblock,
- &found_rec);
+ error = xfs_refcount_lookup_le(cur, left->rc_domain,
+ left->rc_startblock, &found_rec);
if (error)
goto out_error;
if (XFS_IS_CORRUPT(cur->bc_mp, found_rec != 1)) {
@@ -549,6 +583,8 @@ xfs_refcount_merge_right_extent(
int error;
int found_rec;
+ ASSERT(right->rc_domain == cright->rc_domain);
+
trace_xfs_refcount_merge_right_extent(cur->bc_mp,
cur->bc_ag.pag->pag_agno, cright, right);
@@ -557,8 +593,8 @@ xfs_refcount_merge_right_extent(
* remove it.
*/
if (cright->rc_refcount > 1) {
- error = xfs_refcount_lookup_le(cur, cright->rc_startblock,
- &found_rec);
+ error = xfs_refcount_lookup_le(cur, cright->rc_domain,
+ cright->rc_startblock, &found_rec);
if (error)
goto out_error;
if (XFS_IS_CORRUPT(cur->bc_mp, found_rec != 1)) {
@@ -576,8 +612,8 @@ xfs_refcount_merge_right_extent(
}
/* Enlarge the right extent. */
- error = xfs_refcount_lookup_le(cur, right->rc_startblock,
- &found_rec);
+ error = xfs_refcount_lookup_le(cur, right->rc_domain,
+ right->rc_startblock, &found_rec);
if (error)
goto out_error;
if (XFS_IS_CORRUPT(cur->bc_mp, found_rec != 1)) {
@@ -600,8 +636,6 @@ xfs_refcount_merge_right_extent(
return error;
}
-#define XFS_FIND_RCEXT_SHARED 1
-#define XFS_FIND_RCEXT_COW 2
/*
* Find the left extent and the one after it (cleft). This function assumes
* that we've already split any extent crossing agbno.
@@ -611,16 +645,16 @@ xfs_refcount_find_left_extents(
struct xfs_btree_cur *cur,
struct xfs_refcount_irec *left,
struct xfs_refcount_irec *cleft,
+ enum xfs_rcext_domain domain,
xfs_agblock_t agbno,
- xfs_extlen_t aglen,
- int flags)
+ xfs_extlen_t aglen)
{
struct xfs_refcount_irec tmp;
int error;
int found_rec;
left->rc_startblock = cleft->rc_startblock = NULLAGBLOCK;
- error = xfs_refcount_lookup_le(cur, agbno - 1, &found_rec);
+ error = xfs_refcount_lookup_le(cur, domain, agbno - 1, &found_rec);
if (error)
goto out_error;
if (!found_rec)
@@ -634,11 +668,13 @@ xfs_refcount_find_left_extents(
goto out_error;
}
+ if (tmp.rc_domain != domain)
+ return 0;
if (xfs_refc_next(&tmp) != agbno)
return 0;
- if ((flags & XFS_FIND_RCEXT_SHARED) && tmp.rc_refcount < 2)
+ if (domain == XFS_RCDOM_SHARED && tmp.rc_refcount < 2)
return 0;
- if ((flags & XFS_FIND_RCEXT_COW) && tmp.rc_refcount > 1)
+ if (domain == XFS_RCDOM_COW && tmp.rc_refcount > 1)
return 0;
/* We have a left extent; retrieve (or invent) the next right one */
*left = tmp;
@@ -655,6 +691,9 @@ xfs_refcount_find_left_extents(
goto out_error;
}
+ if (tmp.rc_domain != domain)
+ goto not_found;
+
/* if tmp starts at the end of our range, just use that */
if (tmp.rc_startblock == agbno)
*cleft = tmp;
@@ -671,8 +710,10 @@ xfs_refcount_find_left_extents(
cleft->rc_blockcount = min(aglen,
tmp.rc_startblock - agbno);
cleft->rc_refcount = 1;
+ cleft->rc_domain = domain;
}
} else {
+not_found:
/*
* No extents, so pretend that there's one covering the whole
* range.
@@ -680,6 +721,7 @@ xfs_refcount_find_left_extents(
cleft->rc_startblock = agbno;
cleft->rc_blockcount = aglen;
cleft->rc_refcount = 1;
+ cleft->rc_domain = domain;
}
trace_xfs_refcount_find_left_extent(cur->bc_mp, cur->bc_ag.pag->pag_agno,
left, cleft, agbno);
@@ -700,16 +742,16 @@ xfs_refcount_find_right_extents(
struct xfs_btree_cur *cur,
struct xfs_refcount_irec *right,
struct xfs_refcount_irec *cright,
+ enum xfs_rcext_domain domain,
xfs_agblock_t agbno,
- xfs_extlen_t aglen,
- int flags)
+ xfs_extlen_t aglen)
{
struct xfs_refcount_irec tmp;
int error;
int found_rec;
right->rc_startblock = cright->rc_startblock = NULLAGBLOCK;
- error = xfs_refcount_lookup_ge(cur, agbno + aglen, &found_rec);
+ error = xfs_refcount_lookup_ge(cur, domain, agbno + aglen, &found_rec);
if (error)
goto out_error;
if (!found_rec)
@@ -723,11 +765,13 @@ xfs_refcount_find_right_extents(
goto out_error;
}
+ if (tmp.rc_domain != domain)
+ return 0;
if (tmp.rc_startblock != agbno + aglen)
return 0;
- if ((flags & XFS_FIND_RCEXT_SHARED) && tmp.rc_refcount < 2)
+ if (domain == XFS_RCDOM_SHARED && tmp.rc_refcount < 2)
return 0;
- if ((flags & XFS_FIND_RCEXT_COW) && tmp.rc_refcount > 1)
+ if (domain == XFS_RCDOM_COW && tmp.rc_refcount > 1)
return 0;
/* We have a right extent; retrieve (or invent) the next left one */
*right = tmp;
@@ -744,6 +788,9 @@ xfs_refcount_find_right_extents(
goto out_error;
}
+ if (tmp.rc_domain != domain)
+ goto not_found;
+
/* if tmp ends at the end of our range, just use that */
if (xfs_refc_next(&tmp) == agbno + aglen)
*cright = tmp;
@@ -760,8 +807,10 @@ xfs_refcount_find_right_extents(
cright->rc_blockcount = right->rc_startblock -
cright->rc_startblock;
cright->rc_refcount = 1;
+ cright->rc_domain = domain;
}
} else {
+not_found:
/*
* No extents, so pretend that there's one covering the whole
* range.
@@ -769,6 +818,7 @@ xfs_refcount_find_right_extents(
cright->rc_startblock = agbno;
cright->rc_blockcount = aglen;
cright->rc_refcount = 1;
+ cright->rc_domain = domain;
}
trace_xfs_refcount_find_right_extent(cur->bc_mp, cur->bc_ag.pag->pag_agno,
cright, right, agbno + aglen);
@@ -794,10 +844,10 @@ xfs_refc_valid(
STATIC int
xfs_refcount_merge_extents(
struct xfs_btree_cur *cur,
+ enum xfs_rcext_domain domain,
xfs_agblock_t *agbno,
xfs_extlen_t *aglen,
enum xfs_refc_adjust_op adjust,
- int flags,
bool *shape_changed)
{
struct xfs_refcount_irec left = {0}, cleft = {0};
@@ -812,12 +862,12 @@ xfs_refcount_merge_extents(
* just below (agbno + aglen) [cright], and just above (agbno + aglen)
* [right].
*/
- error = xfs_refcount_find_left_extents(cur, &left, &cleft, *agbno,
- *aglen, flags);
+ error = xfs_refcount_find_left_extents(cur, &left, &cleft, domain,
+ *agbno, *aglen);
if (error)
return error;
- error = xfs_refcount_find_right_extents(cur, &right, &cright, *agbno,
- *aglen, flags);
+ error = xfs_refcount_find_right_extents(cur, &right, &cright, domain,
+ *agbno, *aglen);
if (error)
return error;
@@ -870,7 +920,7 @@ xfs_refcount_merge_extents(
aglen);
}
- return error;
+ return 0;
}
/*
@@ -933,7 +983,8 @@ xfs_refcount_adjust_extents(
if (*aglen == 0)
return 0;
- error = xfs_refcount_lookup_ge(cur, *agbno, &found_rec);
+ error = xfs_refcount_lookup_ge(cur, XFS_RCDOM_SHARED, *agbno,
+ &found_rec);
if (error)
goto out_error;
@@ -941,10 +992,11 @@ xfs_refcount_adjust_extents(
error = xfs_refcount_get_rec(cur, &ext, &found_rec);
if (error)
goto out_error;
- if (!found_rec) {
+ if (!found_rec || ext.rc_domain != XFS_RCDOM_SHARED) {
ext.rc_startblock = cur->bc_mp->m_sb.sb_agblocks;
ext.rc_blockcount = 0;
ext.rc_refcount = 0;
+ ext.rc_domain = XFS_RCDOM_SHARED;
}
/*
@@ -957,6 +1009,8 @@ xfs_refcount_adjust_extents(
tmp.rc_blockcount = min(*aglen,
ext.rc_startblock - *agbno);
tmp.rc_refcount = 1 + adj;
+ tmp.rc_domain = XFS_RCDOM_SHARED;
+
trace_xfs_refcount_modify_extent(cur->bc_mp,
cur->bc_ag.pag->pag_agno, &tmp);
@@ -986,8 +1040,8 @@ xfs_refcount_adjust_extents(
(*agbno) += tmp.rc_blockcount;
(*aglen) -= tmp.rc_blockcount;
- error = xfs_refcount_lookup_ge(cur, *agbno,
- &found_rec);
+ error = xfs_refcount_lookup_ge(cur, XFS_RCDOM_SHARED,
+ *agbno, &found_rec);
if (error)
goto out_error;
}
@@ -1070,13 +1124,15 @@ xfs_refcount_adjust(
/*
* Ensure that no rcextents cross the boundary of the adjustment range.
*/
- error = xfs_refcount_split_extent(cur, agbno, &shape_changed);
+ error = xfs_refcount_split_extent(cur, XFS_RCDOM_SHARED, agbno,
+ &shape_changed);
if (error)
goto out_error;
if (shape_changed)
shape_changes++;
- error = xfs_refcount_split_extent(cur, agbno + aglen, &shape_changed);
+ error = xfs_refcount_split_extent(cur, XFS_RCDOM_SHARED, agbno + aglen,
+ &shape_changed);
if (error)
goto out_error;
if (shape_changed)
@@ -1085,8 +1141,8 @@ xfs_refcount_adjust(
/*
* Try to merge with the left or right extents of the range.
*/
- error = xfs_refcount_merge_extents(cur, new_agbno, new_aglen, adj,
- XFS_FIND_RCEXT_SHARED, &shape_changed);
+ error = xfs_refcount_merge_extents(cur, XFS_RCDOM_SHARED, new_agbno,
+ new_aglen, adj, &shape_changed);
if (error)
goto out_error;
if (shape_changed)
@@ -1307,7 +1363,7 @@ xfs_refcount_find_shared(
*flen = 0;
/* Try to find a refcount extent that crosses the start */
- error = xfs_refcount_lookup_le(cur, agbno, &have);
+ error = xfs_refcount_lookup_le(cur, XFS_RCDOM_SHARED, agbno, &have);
if (error)
goto out_error;
if (!have) {
@@ -1325,6 +1381,8 @@ xfs_refcount_find_shared(
error = -EFSCORRUPTED;
goto out_error;
}
+ if (tmp.rc_domain != XFS_RCDOM_SHARED)
+ goto done;
/* If the extent ends before the start, look at the next one */
if (tmp.rc_startblock + tmp.rc_blockcount <= agbno) {
@@ -1340,6 +1398,8 @@ xfs_refcount_find_shared(
error = -EFSCORRUPTED;
goto out_error;
}
+ if (tmp.rc_domain != XFS_RCDOM_SHARED)
+ goto done;
}
/* If the extent starts after the range we want, bail out */
@@ -1371,7 +1431,8 @@ xfs_refcount_find_shared(
error = -EFSCORRUPTED;
goto out_error;
}
- if (tmp.rc_startblock >= agbno + aglen ||
+ if (tmp.rc_domain != XFS_RCDOM_SHARED ||
+ tmp.rc_startblock >= agbno + aglen ||
tmp.rc_startblock != *fbno + *flen)
break;
*flen = min(*flen + tmp.rc_blockcount, agbno + aglen - *fbno);
@@ -1455,17 +1516,22 @@ xfs_refcount_adjust_cow_extents(
return 0;
/* Find any overlapping refcount records */
- error = xfs_refcount_lookup_ge(cur, agbno, &found_rec);
+ error = xfs_refcount_lookup_ge(cur, XFS_RCDOM_COW, agbno, &found_rec);
if (error)
goto out_error;
error = xfs_refcount_get_rec(cur, &ext, &found_rec);
if (error)
goto out_error;
+ if (XFS_IS_CORRUPT(cur->bc_mp, found_rec &&
+ ext.rc_domain != XFS_RCDOM_COW)) {
+ error = -EFSCORRUPTED;
+ goto out_error;
+ }
if (!found_rec) {
- ext.rc_startblock = cur->bc_mp->m_sb.sb_agblocks +
- XFS_REFC_COW_START;
+ ext.rc_startblock = cur->bc_mp->m_sb.sb_agblocks;
ext.rc_blockcount = 0;
ext.rc_refcount = 0;
+ ext.rc_domain = XFS_RCDOM_COW;
}
switch (adj) {
@@ -1480,6 +1546,8 @@ xfs_refcount_adjust_cow_extents(
tmp.rc_startblock = agbno;
tmp.rc_blockcount = aglen;
tmp.rc_refcount = 1;
+ tmp.rc_domain = XFS_RCDOM_COW;
+
trace_xfs_refcount_modify_extent(cur->bc_mp,
cur->bc_ag.pag->pag_agno, &tmp);
@@ -1542,24 +1610,24 @@ xfs_refcount_adjust_cow(
bool shape_changed;
int error;
- agbno += XFS_REFC_COW_START;
-
/*
* Ensure that no rcextents cross the boundary of the adjustment range.
*/
- error = xfs_refcount_split_extent(cur, agbno, &shape_changed);
+ error = xfs_refcount_split_extent(cur, XFS_RCDOM_COW, agbno,
+ &shape_changed);
if (error)
goto out_error;
- error = xfs_refcount_split_extent(cur, agbno + aglen, &shape_changed);
+ error = xfs_refcount_split_extent(cur, XFS_RCDOM_COW, agbno + aglen,
+ &shape_changed);
if (error)
goto out_error;
/*
* Try to merge with the left or right extents of the range.
*/
- error = xfs_refcount_merge_extents(cur, &agbno, &aglen, adj,
- XFS_FIND_RCEXT_COW, &shape_changed);
+ error = xfs_refcount_merge_extents(cur, XFS_RCDOM_COW, &agbno, &aglen,
+ adj, &shape_changed);
if (error)
goto out_error;
@@ -1666,6 +1734,10 @@ xfs_refcount_recover_extent(
be32_to_cpu(rec->refc.rc_refcount) != 1))
return -EFSCORRUPTED;
+ if (XFS_IS_CORRUPT(cur->bc_mp, !(rec->refc.rc_startblock &
+ cpu_to_be32(XFS_REFC_COW_START))))
+ return -EFSCORRUPTED;
+
rr = kmem_alloc(sizeof(struct xfs_refcount_recovery), 0);
xfs_refcount_btrec_to_irec(rec, &rr->rr_rrec);
list_add_tail(&rr->rr_list, debris);
@@ -1687,10 +1759,11 @@ xfs_refcount_recover_cow_leftovers(
union xfs_btree_irec low;
union xfs_btree_irec high;
xfs_fsblock_t fsb;
- xfs_agblock_t agbno;
int error;
- if (mp->m_sb.sb_agblocks >= XFS_REFC_COW_START)
+ /* reflink filesystems mustn't have AGs larger than 2^31-1 blocks */
+ BUILD_BUG_ON(XFS_MAX_CRC_AG_BLOCKS >= XFS_REFC_COW_START);
+ if (mp->m_sb.sb_agblocks > XFS_MAX_CRC_AG_BLOCKS)
return -EOPNOTSUPP;
INIT_LIST_HEAD(&debris);
@@ -1717,7 +1790,7 @@ xfs_refcount_recover_cow_leftovers(
/* Find all the leftover CoW staging extents. */
memset(&low, 0, sizeof(low));
memset(&high, 0, sizeof(high));
- low.rc.rc_startblock = XFS_REFC_COW_START;
+ low.rc.rc_domain = high.rc.rc_domain = XFS_RCDOM_COW;
high.rc.rc_startblock = -1U;
error = xfs_btree_query_range(cur, &low, &high,
xfs_refcount_recover_extent, &debris);
@@ -1738,8 +1811,8 @@ xfs_refcount_recover_cow_leftovers(
&rr->rr_rrec);
/* Free the orphan record */
- agbno = rr->rr_rrec.rc_startblock - XFS_REFC_COW_START;
- fsb = XFS_AGB_TO_FSB(mp, pag->pag_agno, agbno);
+ fsb = XFS_AGB_TO_FSB(mp, pag->pag_agno,
+ rr->rr_rrec.rc_startblock);
xfs_refcount_free_cow_extent(tp, fsb,
rr->rr_rrec.rc_blockcount);
@@ -1770,6 +1843,7 @@ xfs_refcount_recover_cow_leftovers(
int
xfs_refcount_has_record(
struct xfs_btree_cur *cur,
+ enum xfs_rcext_domain domain,
xfs_agblock_t bno,
xfs_extlen_t len,
bool *exists)
@@ -1781,6 +1855,7 @@ xfs_refcount_has_record(
low.rc.rc_startblock = bno;
memset(&high, 0xFF, sizeof(high));
high.rc.rc_startblock = bno + len - 1;
+ low.rc.rc_domain = high.rc.rc_domain = domain;
return xfs_btree_has_record(cur, &low, &high, exists);
}
@@ -14,11 +14,11 @@ struct xfs_bmbt_irec;
struct xfs_refcount_irec;
extern int xfs_refcount_lookup_le(struct xfs_btree_cur *cur,
- xfs_agblock_t bno, int *stat);
+ enum xfs_rcext_domain domain, xfs_agblock_t bno, int *stat);
extern int xfs_refcount_lookup_ge(struct xfs_btree_cur *cur,
- xfs_agblock_t bno, int *stat);
+ enum xfs_rcext_domain domain, xfs_agblock_t bno, int *stat);
extern int xfs_refcount_lookup_eq(struct xfs_btree_cur *cur,
- xfs_agblock_t bno, int *stat);
+ enum xfs_rcext_domain domain, xfs_agblock_t bno, int *stat);
extern int xfs_refcount_get_rec(struct xfs_btree_cur *cur,
struct xfs_refcount_irec *irec, int *stat);
@@ -79,7 +79,8 @@ extern int xfs_refcount_recover_cow_leftovers(struct xfs_mount *mp,
#define XFS_REFCOUNT_ITEM_OVERHEAD 32
extern int xfs_refcount_has_record(struct xfs_btree_cur *cur,
- xfs_agblock_t bno, xfs_extlen_t len, bool *exists);
+ enum xfs_rcext_domain domain, xfs_agblock_t bno,
+ xfs_extlen_t len, bool *exists);
union xfs_btree_rec;
extern void xfs_refcount_btrec_to_irec(const union xfs_btree_rec *rec,
struct xfs_refcount_irec *irec);
@@ -155,12 +155,31 @@ xfs_refcountbt_init_high_key_from_rec(
key->refc.rc_startblock = cpu_to_be32(x);
}
+static inline __u32
+xfs_refcountbt_encode_startblock(
+ struct xfs_btree_cur *cur)
+{
+ __u32 start;
+
+ /*
+ * low level btree operations need to handle the generic btree range
+ * query functions (which set rc_domain == -1U), so we check that the
+ * domain is /not/ shared.
+ */
+ start = cur->bc_rec.rc.rc_startblock & ~XFS_REFC_COW_START;
+ if (cur->bc_rec.rc.rc_domain != XFS_RCDOM_SHARED)
+ start |= XFS_REFC_COW_START;
+ return start;
+}
+
STATIC void
xfs_refcountbt_init_rec_from_cur(
struct xfs_btree_cur *cur,
union xfs_btree_rec *rec)
{
- rec->refc.rc_startblock = cpu_to_be32(cur->bc_rec.rc.rc_startblock);
+ __u32 start = xfs_refcountbt_encode_startblock(cur);
+
+ rec->refc.rc_startblock = cpu_to_be32(start);
rec->refc.rc_blockcount = cpu_to_be32(cur->bc_rec.rc.rc_blockcount);
rec->refc.rc_refcount = cpu_to_be32(cur->bc_rec.rc.rc_refcount);
}
@@ -182,10 +201,11 @@ xfs_refcountbt_key_diff(
struct xfs_btree_cur *cur,
const union xfs_btree_key *key)
{
- struct xfs_refcount_irec *rec = &cur->bc_rec.rc;
const struct xfs_refcount_key *kp = &key->refc;
+ __u32 start;
- return (int64_t)be32_to_cpu(kp->rc_startblock) - rec->rc_startblock;
+ start = xfs_refcountbt_encode_startblock(cur);
+ return (int64_t)be32_to_cpu(kp->rc_startblock) - start;
}
STATIC int64_t
@@ -166,10 +166,20 @@ typedef struct xfs_bmbt_irec
xfs_exntst_t br_state; /* extent state */
} xfs_bmbt_irec_t;
+enum xfs_rcext_domain {
+ XFS_RCDOM_SHARED = 0,
+ XFS_RCDOM_COW,
+};
+
+#define XFS_RCEXT_DOM_STRINGS \
+ { XFS_RCDOM_SHARED, "shared" }, \
+ { XFS_RCDOM_COW, "cow" }
+
struct xfs_refcount_irec {
xfs_agblock_t rc_startblock; /* starting block number */
xfs_extlen_t rc_blockcount; /* count of free blocks */
xfs_nlink_t rc_refcount; /* number of inodes linked here */
+ enum xfs_rcext_domain rc_domain; /* shared or cow staging extent? */
};
#define XFS_RMAP_ATTR_FORK (1 << 0)
@@ -334,20 +334,19 @@ xchk_refcountbt_rec(
struct xfs_refcount_irec irec;
xfs_agblock_t *cow_blocks = bs->private;
struct xfs_perag *pag = bs->cur->bc_ag.pag;
- bool has_cowflag;
xfs_refcount_btrec_to_irec(rec, &irec);
/* Only CoW records can have refcount == 1. */
- has_cowflag = (irec.rc_startblock & XFS_REFC_COW_START);
- if ((irec.rc_refcount == 1 && !has_cowflag) ||
- (irec.rc_refcount != 1 && has_cowflag))
+ if (irec.rc_domain == XFS_RCDOM_SHARED && irec.rc_refcount == 1)
xchk_btree_set_corrupt(bs->sc, bs->cur, 0);
- if (has_cowflag)
+ if (irec.rc_domain == XFS_RCDOM_COW) {
+ if (irec.rc_refcount != 1)
+ xchk_btree_set_corrupt(bs->sc, bs->cur, 0);
(*cow_blocks) += irec.rc_blockcount;
+ }
/* Check the extent. */
- irec.rc_startblock &= ~XFS_REFC_COW_START;
if (irec.rc_startblock + irec.rc_blockcount <= irec.rc_startblock ||
!xfs_verify_agbno(pag, irec.rc_startblock) ||
!xfs_verify_agbno(pag, irec.rc_startblock + irec.rc_blockcount - 1))
@@ -420,7 +419,6 @@ xchk_xref_is_cow_staging(
xfs_extlen_t len)
{
struct xfs_refcount_irec rc;
- bool has_cowflag;
int has_refcount;
int error;
@@ -428,8 +426,8 @@ xchk_xref_is_cow_staging(
return;
/* Find the CoW staging extent. */
- error = xfs_refcount_lookup_le(sc->sa.refc_cur,
- agbno + XFS_REFC_COW_START, &has_refcount);
+ error = xfs_refcount_lookup_le(sc->sa.refc_cur, XFS_RCDOM_COW, agbno,
+ &has_refcount);
if (!xchk_should_check_xref(sc, &error, &sc->sa.refc_cur))
return;
if (!has_refcount) {
@@ -446,8 +444,7 @@ xchk_xref_is_cow_staging(
}
/* CoW flag must be set, refcount must be 1. */
- has_cowflag = (rc.rc_startblock & XFS_REFC_COW_START);
- if (!has_cowflag || rc.rc_refcount != 1)
+ if (rc.rc_domain != XFS_RCDOM_COW || rc.rc_refcount != 1)
xchk_btree_xref_set_corrupt(sc, sc->sa.refc_cur, 0);
/* Must be at least as long as what was passed in */
@@ -471,7 +468,8 @@ xchk_xref_is_not_shared(
if (!sc->sa.refc_cur || xchk_skip_xref(sc->sm))
return;
- error = xfs_refcount_has_record(sc->sa.refc_cur, agbno, len, &shared);
+ error = xfs_refcount_has_record(sc->sa.refc_cur, XFS_RCDOM_SHARED,
+ agbno, len, &shared);
if (!xchk_should_check_xref(sc, &error, &sc->sa.refc_cur))
return;
if (shared)
@@ -799,6 +799,9 @@ TRACE_DEFINE_ENUM(PE_SIZE_PTE);
TRACE_DEFINE_ENUM(PE_SIZE_PMD);
TRACE_DEFINE_ENUM(PE_SIZE_PUD);
+TRACE_DEFINE_ENUM(XFS_RCDOM_SHARED);
+TRACE_DEFINE_ENUM(XFS_RCDOM_COW);
+
TRACE_EVENT(xfs_filemap_fault,
TP_PROTO(struct xfs_inode *ip, enum page_entry_size pe_size,
bool write_fault),
@@ -2925,6 +2928,7 @@ DECLARE_EVENT_CLASS(xfs_refcount_extent_class,
TP_STRUCT__entry(
__field(dev_t, dev)
__field(xfs_agnumber_t, agno)
+ __field(enum xfs_rcext_domain, domain)
__field(xfs_agblock_t, startblock)
__field(xfs_extlen_t, blockcount)
__field(xfs_nlink_t, refcount)
@@ -2932,13 +2936,15 @@ DECLARE_EVENT_CLASS(xfs_refcount_extent_class,
TP_fast_assign(
__entry->dev = mp->m_super->s_dev;
__entry->agno = agno;
+ __entry->domain = irec->rc_domain;
__entry->startblock = irec->rc_startblock;
__entry->blockcount = irec->rc_blockcount;
__entry->refcount = irec->rc_refcount;
),
- TP_printk("dev %d:%d agno 0x%x agbno 0x%x fsbcount 0x%x refcount %u",
+ TP_printk("dev %d:%d agno 0x%x dom %s agbno 0x%x fsbcount 0x%x refcount %u",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->agno,
+ __print_symbolic(__entry->domain, XFS_RCEXT_DOM_STRINGS),
__entry->startblock,
__entry->blockcount,
__entry->refcount)
@@ -2958,6 +2964,7 @@ DECLARE_EVENT_CLASS(xfs_refcount_extent_at_class,
TP_STRUCT__entry(
__field(dev_t, dev)
__field(xfs_agnumber_t, agno)
+ __field(enum xfs_rcext_domain, domain)
__field(xfs_agblock_t, startblock)
__field(xfs_extlen_t, blockcount)
__field(xfs_nlink_t, refcount)
@@ -2966,14 +2973,16 @@ DECLARE_EVENT_CLASS(xfs_refcount_extent_at_class,
TP_fast_assign(
__entry->dev = mp->m_super->s_dev;
__entry->agno = agno;
+ __entry->domain = irec->rc_domain;
__entry->startblock = irec->rc_startblock;
__entry->blockcount = irec->rc_blockcount;
__entry->refcount = irec->rc_refcount;
__entry->agbno = agbno;
),
- TP_printk("dev %d:%d agno 0x%x agbno 0x%x fsbcount 0x%x refcount %u @ agbno 0x%x",
+ TP_printk("dev %d:%d agno 0x%x dom %s agbno 0x%x fsbcount 0x%x refcount %u @ agbno 0x%x",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->agno,
+ __print_symbolic(__entry->domain, XFS_RCEXT_DOM_STRINGS),
__entry->startblock,
__entry->blockcount,
__entry->refcount,
@@ -2994,9 +3003,11 @@ DECLARE_EVENT_CLASS(xfs_refcount_double_extent_class,
TP_STRUCT__entry(
__field(dev_t, dev)
__field(xfs_agnumber_t, agno)
+ __field(enum xfs_rcext_domain, i1_domain)
__field(xfs_agblock_t, i1_startblock)
__field(xfs_extlen_t, i1_blockcount)
__field(xfs_nlink_t, i1_refcount)
+ __field(enum xfs_rcext_domain, i2_domain)
__field(xfs_agblock_t, i2_startblock)
__field(xfs_extlen_t, i2_blockcount)
__field(xfs_nlink_t, i2_refcount)
@@ -3004,20 +3015,24 @@ DECLARE_EVENT_CLASS(xfs_refcount_double_extent_class,
TP_fast_assign(
__entry->dev = mp->m_super->s_dev;
__entry->agno = agno;
+ __entry->i1_domain = i1->rc_domain;
__entry->i1_startblock = i1->rc_startblock;
__entry->i1_blockcount = i1->rc_blockcount;
__entry->i1_refcount = i1->rc_refcount;
+ __entry->i2_domain = i2->rc_domain;
__entry->i2_startblock = i2->rc_startblock;
__entry->i2_blockcount = i2->rc_blockcount;
__entry->i2_refcount = i2->rc_refcount;
),
- TP_printk("dev %d:%d agno 0x%x agbno 0x%x fsbcount 0x%x refcount %u -- "
- "agbno 0x%x fsbcount 0x%x refcount %u",
+ TP_printk("dev %d:%d agno 0x%x dom %s agbno 0x%x fsbcount 0x%x refcount %u -- "
+ "dom %s agbno 0x%x fsbcount 0x%x refcount %u",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->agno,
+ __print_symbolic(__entry->i1_domain, XFS_RCEXT_DOM_STRINGS),
__entry->i1_startblock,
__entry->i1_blockcount,
__entry->i1_refcount,
+ __print_symbolic(__entry->i2_domain, XFS_RCEXT_DOM_STRINGS),
__entry->i2_startblock,
__entry->i2_blockcount,
__entry->i2_refcount)
@@ -3038,9 +3053,11 @@ DECLARE_EVENT_CLASS(xfs_refcount_double_extent_at_class,
TP_STRUCT__entry(
__field(dev_t, dev)
__field(xfs_agnumber_t, agno)
+ __field(enum xfs_rcext_domain, i1_domain)
__field(xfs_agblock_t, i1_startblock)
__field(xfs_extlen_t, i1_blockcount)
__field(xfs_nlink_t, i1_refcount)
+ __field(enum xfs_rcext_domain, i2_domain)
__field(xfs_agblock_t, i2_startblock)
__field(xfs_extlen_t, i2_blockcount)
__field(xfs_nlink_t, i2_refcount)
@@ -3049,21 +3066,25 @@ DECLARE_EVENT_CLASS(xfs_refcount_double_extent_at_class,
TP_fast_assign(
__entry->dev = mp->m_super->s_dev;
__entry->agno = agno;
+ __entry->i1_domain = i1->rc_domain;
__entry->i1_startblock = i1->rc_startblock;
__entry->i1_blockcount = i1->rc_blockcount;
__entry->i1_refcount = i1->rc_refcount;
+ __entry->i2_domain = i2->rc_domain;
__entry->i2_startblock = i2->rc_startblock;
__entry->i2_blockcount = i2->rc_blockcount;
__entry->i2_refcount = i2->rc_refcount;
__entry->agbno = agbno;
),
- TP_printk("dev %d:%d agno 0x%x agbno 0x%x fsbcount 0x%x refcount %u -- "
- "agbno 0x%x fsbcount 0x%x refcount %u @ agbno 0x%x",
+ TP_printk("dev %d:%d agno 0x%x dom %s agbno 0x%x fsbcount 0x%x refcount %u -- "
+ "dom %s agbno 0x%x fsbcount 0x%x refcount %u @ agbno 0x%x",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->agno,
+ __print_symbolic(__entry->i1_domain, XFS_RCEXT_DOM_STRINGS),
__entry->i1_startblock,
__entry->i1_blockcount,
__entry->i1_refcount,
+ __print_symbolic(__entry->i2_domain, XFS_RCEXT_DOM_STRINGS),
__entry->i2_startblock,
__entry->i2_blockcount,
__entry->i2_refcount,
@@ -3086,12 +3107,15 @@ DECLARE_EVENT_CLASS(xfs_refcount_triple_extent_class,
TP_STRUCT__entry(
__field(dev_t, dev)
__field(xfs_agnumber_t, agno)
+ __field(enum xfs_rcext_domain, i1_domain)
__field(xfs_agblock_t, i1_startblock)
__field(xfs_extlen_t, i1_blockcount)
__field(xfs_nlink_t, i1_refcount)
+ __field(enum xfs_rcext_domain, i2_domain)
__field(xfs_agblock_t, i2_startblock)
__field(xfs_extlen_t, i2_blockcount)
__field(xfs_nlink_t, i2_refcount)
+ __field(enum xfs_rcext_domain, i3_domain)
__field(xfs_agblock_t, i3_startblock)
__field(xfs_extlen_t, i3_blockcount)
__field(xfs_nlink_t, i3_refcount)
@@ -3099,27 +3123,33 @@ DECLARE_EVENT_CLASS(xfs_refcount_triple_extent_class,
TP_fast_assign(
__entry->dev = mp->m_super->s_dev;
__entry->agno = agno;
+ __entry->i1_domain = i1->rc_domain;
__entry->i1_startblock = i1->rc_startblock;
__entry->i1_blockcount = i1->rc_blockcount;
__entry->i1_refcount = i1->rc_refcount;
+ __entry->i2_domain = i2->rc_domain;
__entry->i2_startblock = i2->rc_startblock;
__entry->i2_blockcount = i2->rc_blockcount;
__entry->i2_refcount = i2->rc_refcount;
+ __entry->i3_domain = i3->rc_domain;
__entry->i3_startblock = i3->rc_startblock;
__entry->i3_blockcount = i3->rc_blockcount;
__entry->i3_refcount = i3->rc_refcount;
),
- TP_printk("dev %d:%d agno 0x%x agbno 0x%x fsbcount 0x%x refcount %u -- "
- "agbno 0x%x fsbcount 0x%x refcount %u -- "
- "agbno 0x%x fsbcount 0x%x refcount %u",
+ TP_printk("dev %d:%d agno 0x%x dom %s agbno 0x%x fsbcount 0x%x refcount %u -- "
+ "dom %s agbno 0x%x fsbcount 0x%x refcount %u -- "
+ "dom %s agbno 0x%x fsbcount 0x%x refcount %u",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->agno,
+ __print_symbolic(__entry->i1_domain, XFS_RCEXT_DOM_STRINGS),
__entry->i1_startblock,
__entry->i1_blockcount,
__entry->i1_refcount,
+ __print_symbolic(__entry->i2_domain, XFS_RCEXT_DOM_STRINGS),
__entry->i2_startblock,
__entry->i2_blockcount,
__entry->i2_refcount,
+ __print_symbolic(__entry->i3_domain, XFS_RCEXT_DOM_STRINGS),
__entry->i3_startblock,
__entry->i3_blockcount,
__entry->i3_refcount)