The maximum extent length depends on maximum block count that can be stored in
a BMBT record. Hence this commit defines MAXEXTLEN based on
BMBT_BLOCKCOUNT_BITLEN.
While at it, the commit also renames MAXEXTLEN to XFS_MAX_EXTLEN.
Suggested-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Signed-off-by: Chandan Babu R <chandan.babu@xxxxxxxxxx>
---
db/metadump.c | 2 +-
libxfs/xfs_bmap.c | 53 +++++++++++++++++++++--------------------
libxfs/xfs_format.h | 20 +++++++---------
libxfs/xfs_inode_buf.c | 4 ++--
libxfs/xfs_rtbitmap.c | 4 ++--
libxfs/xfs_swapext.c | 6 ++---
libxfs/xfs_trans_resv.c | 10 ++++----
mkfs/xfs_mkfs.c | 6 ++---
repair/bmap_repair.c | 2 +-
repair/phase4.c | 2 +-
10 files changed, 54 insertions(+), 55 deletions(-)
diff --git a/db/metadump.c b/db/metadump.c
index 3e3e05c7..77a27707 100644
--- a/db/metadump.c
+++ b/db/metadump.c
@@ -20,7 +20,7 @@
#include "field.h"
#include "dir2.h"
-#define DEFAULT_MAX_EXT_SIZE MAXEXTLEN
+#define DEFAULT_MAX_EXT_SIZE XFS_MAX_EXTLEN
/* copy all metadata structures to/from a file */
diff --git a/libxfs/xfs_bmap.c b/libxfs/xfs_bmap.c
index 8a1b94bb..fa7b4a2a 100644
--- a/libxfs/xfs_bmap.c
+++ b/libxfs/xfs_bmap.c
@@ -541,7 +541,7 @@ __xfs_bmap_add_free(
ASSERT(bno != NULLFSBLOCK);
ASSERT(len > 0);
- ASSERT(len <= MAXEXTLEN);
+ ASSERT(len <= XFS_MAX_EXTLEN);
ASSERT(!isnullstartblock(bno));
agno = XFS_FSB_TO_AGNO(mp, bno);
agbno = XFS_FSB_TO_AGBNO(mp, bno);
@@ -1497,7 +1497,7 @@ xfs_bmap_add_extent_delay_real(
LEFT.br_startoff + LEFT.br_blockcount == new->br_startoff &&
LEFT.br_startblock + LEFT.br_blockcount == new->br_startblock &&
LEFT.br_state == new->br_state &&
- LEFT.br_blockcount + new->br_blockcount <= MAXEXTLEN)
+ LEFT.br_blockcount + new->br_blockcount <= XFS_MAX_EXTLEN)
state |= BMAP_LEFT_CONTIG;
/*
@@ -1515,13 +1515,13 @@ xfs_bmap_add_extent_delay_real(
new_endoff == RIGHT.br_startoff &&
new->br_startblock + new->br_blockcount == RIGHT.br_startblock &&
new->br_state == RIGHT.br_state &&
- new->br_blockcount + RIGHT.br_blockcount <= MAXEXTLEN &&
+ new->br_blockcount + RIGHT.br_blockcount <= XFS_MAX_EXTLEN &&
((state & (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING |
BMAP_RIGHT_FILLING)) !=
(BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING |
BMAP_RIGHT_FILLING) ||
LEFT.br_blockcount + new->br_blockcount + RIGHT.br_blockcount
- <= MAXEXTLEN))
+ <= XFS_MAX_EXTLEN))
state |= BMAP_RIGHT_CONTIG;
error = 0;
@@ -2060,7 +2060,7 @@ xfs_bmap_add_extent_unwritten_real(
LEFT.br_startoff + LEFT.br_blockcount == new->br_startoff &&
LEFT.br_startblock + LEFT.br_blockcount == new->br_startblock &&
LEFT.br_state == new->br_state &&
- LEFT.br_blockcount + new->br_blockcount <= MAXEXTLEN)
+ LEFT.br_blockcount + new->br_blockcount <= XFS_MAX_EXTLEN)
state |= BMAP_LEFT_CONTIG;
/*
@@ -2078,13 +2078,13 @@ xfs_bmap_add_extent_unwritten_real(
new_endoff == RIGHT.br_startoff &&
new->br_startblock + new->br_blockcount == RIGHT.br_startblock &&
new->br_state == RIGHT.br_state &&
- new->br_blockcount + RIGHT.br_blockcount <= MAXEXTLEN &&
+ new->br_blockcount + RIGHT.br_blockcount <= XFS_MAX_EXTLEN &&
((state & (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING |
BMAP_RIGHT_FILLING)) !=
(BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING |
BMAP_RIGHT_FILLING) ||
LEFT.br_blockcount + new->br_blockcount + RIGHT.br_blockcount
- <= MAXEXTLEN))
+ <= XFS_MAX_EXTLEN))
state |= BMAP_RIGHT_CONTIG;
/*
@@ -2593,15 +2593,15 @@ xfs_bmap_add_extent_hole_delay(
*/
if ((state & BMAP_LEFT_VALID) && (state & BMAP_LEFT_DELAY) &&
left.br_startoff + left.br_blockcount == new->br_startoff &&
- left.br_blockcount + new->br_blockcount <= MAXEXTLEN)
+ left.br_blockcount + new->br_blockcount <= XFS_MAX_EXTLEN)
state |= BMAP_LEFT_CONTIG;
if ((state & BMAP_RIGHT_VALID) && (state & BMAP_RIGHT_DELAY) &&
new->br_startoff + new->br_blockcount == right.br_startoff &&
- new->br_blockcount + right.br_blockcount <= MAXEXTLEN &&
+ new->br_blockcount + right.br_blockcount <= XFS_MAX_EXTLEN &&
(!(state & BMAP_LEFT_CONTIG) ||
(left.br_blockcount + new->br_blockcount +
- right.br_blockcount <= MAXEXTLEN)))
+ right.br_blockcount <= XFS_MAX_EXTLEN)))
state |= BMAP_RIGHT_CONTIG;
/*
@@ -2744,17 +2744,17 @@ xfs_bmap_add_extent_hole_real(
left.br_startoff + left.br_blockcount == new->br_startoff &&
left.br_startblock + left.br_blockcount == new->br_startblock &&
left.br_state == new->br_state &&
- left.br_blockcount + new->br_blockcount <= MAXEXTLEN)
+ left.br_blockcount + new->br_blockcount <= XFS_MAX_EXTLEN)
state |= BMAP_LEFT_CONTIG;
if ((state & BMAP_RIGHT_VALID) && !(state & BMAP_RIGHT_DELAY) &&
new->br_startoff + new->br_blockcount == right.br_startoff &&
new->br_startblock + new->br_blockcount == right.br_startblock &&
new->br_state == right.br_state &&
- new->br_blockcount + right.br_blockcount <= MAXEXTLEN &&
+ new->br_blockcount + right.br_blockcount <= XFS_MAX_EXTLEN &&
(!(state & BMAP_LEFT_CONTIG) ||
left.br_blockcount + new->br_blockcount +
- right.br_blockcount <= MAXEXTLEN))
+ right.br_blockcount <= XFS_MAX_EXTLEN))
state |= BMAP_RIGHT_CONTIG;
error = 0;
@@ -2996,15 +2996,15 @@ xfs_bmap_extsize_align(
/*
* For large extent hint sizes, the aligned extent might be larger than
- * MAXEXTLEN. In that case, reduce the size by an extsz so that it pulls
- * the length back under MAXEXTLEN. The outer allocation loops handle
+ * XFS_MAX_EXTLEN. In that case, reduce the size by an extsz so that it pulls
+ * the length back under XFS_MAX_EXTLEN. The outer allocation loops handle
* short allocation just fine, so it is safe to do this. We only want to
* do it when we are forced to, though, because it means more allocation
* operations are required.
*/
- while (align_alen > MAXEXTLEN)
+ while (align_alen > XFS_MAX_EXTLEN)
align_alen -= extsz;
- ASSERT(align_alen <= MAXEXTLEN);
+ ASSERT(align_alen <= XFS_MAX_EXTLEN);
/*
* If the previous block overlaps with this proposed allocation
@@ -3094,9 +3094,9 @@ xfs_bmap_extsize_align(
return -EINVAL;
} else {
ASSERT(orig_off >= align_off);
- /* see MAXEXTLEN handling above */
+ /* see XFS_MAX_EXTLEN handling above */
ASSERT(orig_end <= align_off + align_alen ||
- align_alen + extsz > MAXEXTLEN);
+ align_alen + extsz > XFS_MAX_EXTLEN);
}
#ifdef DEBUG
@@ -4063,7 +4063,7 @@ xfs_bmapi_reserve_delalloc(
* Cap the alloc length. Keep track of prealloc so we know whether to
* tag the inode before we return.
*/
- alen = XFS_FILBLKS_MIN(len + prealloc, MAXEXTLEN);
+ alen = XFS_FILBLKS_MIN(len + prealloc, XFS_MAX_EXTLEN);
if (!eof)
alen = XFS_FILBLKS_MIN(alen, got->br_startoff - aoff);
if (prealloc && alen >= len)
@@ -4196,7 +4196,7 @@ xfs_bmapi_allocate(
if (!xfs_iext_peek_prev_extent(ifp, &bma->icur, &bma->prev))
bma->prev.br_startoff = NULLFILEOFF;
} else {
- bma->length = XFS_FILBLKS_MIN(bma->length, MAXEXTLEN);
+ bma->length = XFS_FILBLKS_MIN(bma->length, XFS_MAX_EXTLEN);
if (!bma->eof)
bma->length = XFS_FILBLKS_MIN(bma->length,
bma->got.br_startoff - bma->offset);
@@ -4517,8 +4517,8 @@ xfs_bmapi_write(
* xfs_extlen_t and therefore 32 bits. Hence we have to
* check for 32-bit overflows and handle them here.
*/
- if (len > (xfs_filblks_t)MAXEXTLEN)
- bma.length = MAXEXTLEN;
+ if (len > (xfs_filblks_t)XFS_MAX_EXTLEN)
+ bma.length = XFS_MAX_EXTLEN;
else
bma.length = len;
@@ -4653,7 +4653,8 @@ xfs_bmapi_convert_delalloc(
bma.ip = ip;
bma.wasdel = true;
bma.offset = bma.got.br_startoff;
- bma.length = max_t(xfs_filblks_t, bma.got.br_blockcount, MAXEXTLEN);
+ bma.length = max_t(xfs_filblks_t, bma.got.br_blockcount,
+ XFS_MAX_EXTLEN);
bma.minleft = xfs_bmapi_minleft(tp, ip, whichfork);
/*
@@ -4736,7 +4737,7 @@ xfs_bmapi_remap(
ifp = XFS_IFORK_PTR(ip, whichfork);
ASSERT(len > 0);
- ASSERT(len <= (xfs_filblks_t)MAXEXTLEN);
+ ASSERT(len <= (xfs_filblks_t)XFS_MAX_EXTLEN);
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
ASSERT(!(flags & ~(XFS_BMAPI_ATTRFORK | XFS_BMAPI_PREALLOC |
XFS_BMAPI_NORMAP)));
@@ -5709,7 +5710,7 @@ xfs_bmse_can_merge(
if ((left->br_startoff + left->br_blockcount != startoff) ||
(left->br_startblock + left->br_blockcount != got->br_startblock) ||
(left->br_state != got->br_state) ||
- (left->br_blockcount + got->br_blockcount > MAXEXTLEN))
+ (left->br_blockcount + got->br_blockcount > XFS_MAX_EXTLEN))
return false;
return true;
diff --git a/libxfs/xfs_format.h b/libxfs/xfs_format.h
index a97abc4a..c9af8c04 100644
--- a/libxfs/xfs_format.h
+++ b/libxfs/xfs_format.h
@@ -884,17 +884,6 @@ enum xfs_dinode_fmt {
{ XFS_DINODE_FMT_BTREE, "btree" }, \
{ XFS_DINODE_FMT_UUID, "uuid" }
-/*
- * Max values for extlen, disk inode's extent counters.
- */
-
-#define MAXEXTLEN ((xfs_extlen_t)0x1fffff) /* 21 bits */
-#define XFS_IFORK_EXTCNT_MAXU48 ((xfs_extnum_t)0xffffffffffff) /* Unsigned 48-bits */
-#define XFS_IFORK_EXTCNT_MAXU32 ((xfs_aextnum_t)0xffffffff) /* Unsigned 32-bits */
-#define XFS_IFORK_EXTCNT_MAXS32 ((xfs_extnum_t)0x7fffffff) /* Signed 32-bits */
-#define XFS_IFORK_EXTCNT_MAXS16 ((xfs_aextnum_t)0x7fff) /* Signed 16-bits */
-
-
/*
* Inode minimum and maximum sizes.
*/
@@ -1700,6 +1689,15 @@ typedef struct xfs_bmbt_rec {
typedef uint64_t xfs_bmbt_rec_base_t; /* use this for casts */
typedef xfs_bmbt_rec_t xfs_bmdr_rec_t;
+/*
+ * Max values for extlen, disk inode's extent counters.
+ */
+#define XFS_MAX_EXTLEN ((xfs_extlen_t)(1 << BMBT_BLOCKCOUNT_BITLEN) - 1)
+#define XFS_IFORK_EXTCNT_MAXU48 ((xfs_extnum_t)0xffffffffffff) /* Unsigned 48-bits */
+#define XFS_IFORK_EXTCNT_MAXU32 ((xfs_aextnum_t)0xffffffff) /* Unsigned 32-bits */
+#define XFS_IFORK_EXTCNT_MAXS32 ((xfs_extnum_t)0x7fffffff) /* Signed 32-bits */
+#define XFS_IFORK_EXTCNT_MAXS16 ((xfs_aextnum_t)0x7fff) /* Signed 16-bits */
+
/*
* Values and macros for delayed-allocation startblock fields.
*/
diff --git a/libxfs/xfs_inode_buf.c b/libxfs/xfs_inode_buf.c
index 15690f7f..77288b82 100644
--- a/libxfs/xfs_inode_buf.c
+++ b/libxfs/xfs_inode_buf.c
@@ -744,7 +744,7 @@ xfs_inode_validate_extsize(
if (extsize_bytes % blocksize_bytes)
return __this_address;
- if (extsize > MAXEXTLEN)
+ if (extsize > XFS_MAX_EXTLEN)
return __this_address;
if (!rt_flag && extsize > mp->m_sb.sb_agblocks / 2)
@@ -801,7 +801,7 @@ xfs_inode_validate_cowextsize(
if (cowextsize_bytes % mp->m_sb.sb_blocksize)
return __this_address;
- if (cowextsize > MAXEXTLEN)
+ if (cowextsize > XFS_MAX_EXTLEN)
return __this_address;
if (cowextsize > mp->m_sb.sb_agblocks / 2)
diff --git a/libxfs/xfs_rtbitmap.c b/libxfs/xfs_rtbitmap.c
index a8a71adc..c87c9d0b 100644
--- a/libxfs/xfs_rtbitmap.c
+++ b/libxfs/xfs_rtbitmap.c
@@ -1013,7 +1013,7 @@ xfs_rtfree_extent(
/*
* Free some blocks in the realtime subvolume. rtbno and rtlen are in units of
* rt blocks, not rt extents; must be aligned to the rt extent size; and rtlen
- * cannot exceed MAXEXTLEN.
+ * cannot exceed XFS_MAX_EXTLEN.
*/
int
xfs_rtfree_blocks(
@@ -1026,7 +1026,7 @@ xfs_rtfree_blocks(
xfs_filblks_t len;
xfs_extlen_t mod;
- ASSERT(rtlen <= MAXEXTLEN);
+ ASSERT(rtlen <= XFS_MAX_EXTLEN);
len = div_u64_rem(rtlen, mp->m_sb.sb_rextsize, &mod);
if (mod) {
diff --git a/libxfs/xfs_swapext.c b/libxfs/xfs_swapext.c
index 2fb0ac76..f8facf1d 100644
--- a/libxfs/xfs_swapext.c
+++ b/libxfs/xfs_swapext.c
@@ -755,7 +755,7 @@ can_merge(
if (b1->br_startoff + b1->br_blockcount == b2->br_startoff &&
b1->br_startblock + b1->br_blockcount == b2->br_startblock &&
b1->br_state == b2->br_state &&
- b1->br_blockcount + b2->br_blockcount <= MAXEXTLEN)
+ b1->br_blockcount + b2->br_blockcount <= XFS_MAX_EXTLEN)
return true;
return false;
@@ -797,7 +797,7 @@ delta_nextents_step(
state |= CRIGHT_CONTIG;
if ((state & CBOTH_CONTIG) == CBOTH_CONTIG &&
left->br_startblock + curr->br_startblock +
- right->br_startblock > MAXEXTLEN)
+ right->br_startblock > XFS_MAX_EXTLEN)
state &= ~CRIGHT_CONTIG;
if (nhole)
@@ -808,7 +808,7 @@ delta_nextents_step(
state |= NRIGHT_CONTIG;
if ((state & NBOTH_CONTIG) == NBOTH_CONTIG &&
left->br_startblock + new->br_startblock +
- right->br_startblock > MAXEXTLEN)
+ right->br_startblock > XFS_MAX_EXTLEN)
state &= ~NRIGHT_CONTIG;
switch (state & (CLEFT_CONTIG | CRIGHT_CONTIG | CHOLE)) {
diff --git a/libxfs/xfs_trans_resv.c b/libxfs/xfs_trans_resv.c
index f153e021..6566012d 100644
--- a/libxfs/xfs_trans_resv.c
+++ b/libxfs/xfs_trans_resv.c
@@ -208,8 +208,8 @@ xfs_calc_inode_chunk_res(
/*
* Per-extent log reservation for the btree changes involved in freeing or
* allocating a realtime extent. We have to be able to log as many rtbitmap
- * blocks as needed to mark inuse MAXEXTLEN blocks' worth of realtime extents,
- * as well as the realtime summary block.
+ * blocks as needed to mark inuse XFS_MAX_EXTLEN blocks' worth of realtime
+ * extents, as well as the realtime summary block.
*/
static unsigned int
xfs_rtalloc_log_count(
@@ -219,7 +219,7 @@ xfs_rtalloc_log_count(
unsigned int blksz = XFS_FSB_TO_B(mp, 1);
unsigned int rtbmp_bytes;
- rtbmp_bytes = (MAXEXTLEN / mp->m_sb.sb_rextsize) / NBBY;
+ rtbmp_bytes = (XFS_MAX_EXTLEN / mp->m_sb.sb_rextsize) / NBBY;
return (howmany(rtbmp_bytes, blksz) + 1) * num_ops;
}
@@ -278,7 +278,7 @@ xfs_refcount_log_reservation(
* the inode's bmap btree: max depth * block size
* the agfs of the ags from which the extents are allocated: 2 * sector
* the superblock free block counter: sector size
- * the realtime bitmap: ((MAXEXTLEN / rtextsize) / NBBY) bytes
+ * the realtime bitmap: ((XFS_MAX_EXTLEN / rtextsize) / NBBY) bytes
* the realtime summary: 1 block
* the allocation btrees: 2 trees * (2 * max depth - 1) * block size
* And the bmap_finish transaction can free bmap blocks in a join (t3):
@@ -333,7 +333,7 @@ xfs_calc_write_reservation(
* the agf for each of the ags: 2 * sector size
* the agfl for each of the ags: 2 * sector size
* the super block to reflect the freed blocks: sector size
- * the realtime bitmap: 2 exts * ((MAXEXTLEN / rtextsize) / NBBY) bytes
+ * the realtime bitmap: 2 exts * ((XFS_MAX_EXTLEN / rtextsize) / NBBY) bytes
* the realtime summary: 2 exts * 1 block
* worst case split in allocation btrees per extent assuming 2 extents:
* 2 exts * 2 trees * (2 * max depth - 1) * block size
diff --git a/mkfs/xfs_mkfs.c b/mkfs/xfs_mkfs.c
index 37c22277..49a450e0 100644
--- a/mkfs/xfs_mkfs.c
+++ b/mkfs/xfs_mkfs.c
@@ -2427,7 +2427,7 @@ validate_extsize_hint(
fprintf(stderr,
_("illegal extent size hint %lld, must be less than %u.\n"),
(long long)cli->fsx.fsx_extsize,
- min(MAXEXTLEN, mp->m_sb.sb_agblocks / 2));
+ min(XFS_MAX_EXTLEN, mp->m_sb.sb_agblocks / 2));
usage();
}
@@ -2450,7 +2450,7 @@ _("illegal extent size hint %lld, must be less than %u.\n"),
fprintf(stderr,
_("illegal extent size hint %lld, must be less than %u and a multiple of %u.\n"),
(long long)cli->fsx.fsx_extsize,
- min(MAXEXTLEN, mp->m_sb.sb_agblocks / 2),
+ min(XFS_MAX_EXTLEN, mp->m_sb.sb_agblocks / 2),
mp->m_sb.sb_rextsize);
usage();
}
@@ -2479,7 +2479,7 @@ validate_cowextsize_hint(
fprintf(stderr,
_("illegal CoW extent size hint %lld, must be less than %u.\n"),
(long long)cli->fsx.fsx_cowextsize,
- min(MAXEXTLEN, mp->m_sb.sb_agblocks / 2));
+ min(XFS_MAX_EXTLEN, mp->m_sb.sb_agblocks / 2));
usage();
}
}
diff --git a/repair/bmap_repair.c b/repair/bmap_repair.c
index 7d3bb330..811b16dc 100644
--- a/repair/bmap_repair.c
+++ b/repair/bmap_repair.c
@@ -64,7 +64,7 @@ xrep_bmap_from_rmap(
do {
irec.br_blockcount = min_t(xfs_filblks_t, blockcount,
- MAXEXTLEN);
+ XFS_MAX_EXTLEN);
libxfs_bmbt_disk_set_all(&rbe, &irec);
error = slab_add(rb->bmap_records, &rbe);
diff --git a/repair/phase4.c b/repair/phase4.c
index b752b07c..880cd313 100644
--- a/repair/phase4.c
+++ b/repair/phase4.c
@@ -393,7 +393,7 @@ phase4(xfs_mount_t *mp)
if (rt_start == 0) {
rt_start = bno;
rt_len = 1;
- } else if (rt_len == MAXEXTLEN) {
+ } else if (rt_len == XFS_MAX_EXTLEN) {
/*
* large extent case
*/
--
2.30.2
