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xfs: add CRC checking to dir2 data blocks 

This addition follows the same pattern as the dir2 block CRCs.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
This commit is contained in:
Dave Chinner 2013-04-03 16:11:22 +11:00 committed by Ben Myers
parent cbc8adf897
commit 33363feed1
7 changed files with 162 additions and 105 deletions
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22
fs/xfs/xfs_dir2_block.c
View File

@ -77,7 +77,7 @@ xfs_dir3_block_verify(
if (hdr3->magic != cpu_to_be32(XFS_DIR2_BLOCK_MAGIC))
return false;
}
if (__xfs_dir2_data_check(NULL, bp))
if (__xfs_dir3_data_check(NULL, bp))
return false;
return true;
}
@ -553,7 +553,7 @@ xfs_dir2_block_addname(
xfs_dir2_data_log_header(tp, bp);
xfs_dir2_block_log_tail(tp, bp);
xfs_dir2_data_log_entry(tp, bp, dep);
xfs_dir2_data_check(dp, bp);
xfs_dir3_data_check(dp, bp);
return 0;
}
@ -596,7 +596,7 @@ xfs_dir2_block_getdents(
*/
wantoff = xfs_dir2_dataptr_to_off(mp, *offset);
hdr = bp->b_addr;
xfs_dir2_data_check(dp, bp);
xfs_dir3_data_check(dp, bp);
/*
* Set up values for the loop.
*/
@ -720,7 +720,7 @@ xfs_dir2_block_lookup(
dp = args->dp;
mp = dp->i_mount;
hdr = bp->b_addr;
xfs_dir2_data_check(dp, bp);
xfs_dir3_data_check(dp, bp);
btp = xfs_dir2_block_tail_p(mp, hdr);
blp = xfs_dir2_block_leaf_p(btp);
/*
@ -771,7 +771,7 @@ xfs_dir2_block_lookup_int(
return error;
hdr = bp->b_addr;
xfs_dir2_data_check(dp, bp);
xfs_dir3_data_check(dp, bp);
btp = xfs_dir2_block_tail_p(mp, hdr);
blp = xfs_dir2_block_leaf_p(btp);
/*
@ -908,7 +908,7 @@ xfs_dir2_block_removename(
xfs_dir2_data_freescan(mp, hdr, &needlog);
if (needlog)
xfs_dir2_data_log_header(tp, bp);
xfs_dir2_data_check(dp, bp);
xfs_dir3_data_check(dp, bp);
/*
* See if the size as a shortform is good enough.
*/
@ -965,7 +965,7 @@ xfs_dir2_block_replace(
*/
dep->inumber = cpu_to_be64(args->inumber);
xfs_dir2_data_log_entry(args->trans, bp, dep);
xfs_dir2_data_check(dp, bp);
xfs_dir3_data_check(dp, bp);
return 0;
}
@ -1046,12 +1046,14 @@ xfs_dir2_leaf_to_block(
* Read the data block if we don't already have it, give up if it fails.
*/
if (!dbp) {
error = xfs_dir2_data_read(tp, dp, mp->m_dirdatablk, -1, &dbp);
error = xfs_dir3_data_read(tp, dp, mp->m_dirdatablk, -1, &dbp);
if (error)
return error;
}
hdr = dbp->b_addr;
ASSERT(hdr->magic == cpu_to_be32(XFS_DIR2_DATA_MAGIC));
ASSERT(hdr->magic == cpu_to_be32(XFS_DIR2_DATA_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR3_DATA_MAGIC));
/*
* Size of the "leaf" area in the block.
*/
@ -1329,6 +1331,6 @@ xfs_dir2_sf_to_block(
ASSERT(needscan == 0);
xfs_dir2_block_log_leaf(tp, bp, 0, be32_to_cpu(btp->count) - 1);
xfs_dir2_block_log_tail(tp, bp);
xfs_dir2_data_check(dp, bp);
xfs_dir3_data_check(dp, bp);
return 0;
}

100
fs/xfs/xfs_dir2_data.c
View File

@ -31,6 +31,8 @@
#include "xfs_dir2_format.h"
#include "xfs_dir2_priv.h"
#include "xfs_error.h"
#include "xfs_buf_item.h"
#include "xfs_cksum.h"
STATIC xfs_dir2_data_free_t *
xfs_dir2_data_freefind(xfs_dir2_data_hdr_t *hdr, xfs_dir2_data_unused_t *dup);
@ -41,7 +43,7 @@ xfs_dir2_data_freefind(xfs_dir2_data_hdr_t *hdr, xfs_dir2_data_unused_t *dup);
* Return 0 is the buffer is good, otherwise an error.
*/
int
__xfs_dir2_data_check(
__xfs_dir3_data_check(
struct xfs_inode *dp, /* incore inode pointer */
struct xfs_buf *bp) /* data block's buffer */
{
@ -76,6 +78,7 @@ __xfs_dir2_data_check(
lep = xfs_dir2_block_leaf_p(btp);
endp = (char *)lep;
break;
case cpu_to_be32(XFS_DIR3_DATA_MAGIC):
case cpu_to_be32(XFS_DIR2_DATA_MAGIC):
endp = (char *)hdr + mp->m_dirblksize;
break;
@ -189,21 +192,27 @@ __xfs_dir2_data_check(
return 0;
}
static void
xfs_dir2_data_verify(
static bool
xfs_dir3_data_verify(
struct xfs_buf *bp)
{
struct xfs_mount *mp = bp->b_target->bt_mount;
struct xfs_dir2_data_hdr *hdr = bp->b_addr;
int block_ok = 0;
struct xfs_dir3_blk_hdr *hdr3 = bp->b_addr;
block_ok = hdr->magic == cpu_to_be32(XFS_DIR2_DATA_MAGIC);
block_ok = block_ok && __xfs_dir2_data_check(NULL, bp) == 0;
if (!block_ok) {
XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, hdr);
xfs_buf_ioerror(bp, EFSCORRUPTED);
if (xfs_sb_version_hascrc(&mp->m_sb)) {
if (hdr3->magic != cpu_to_be32(XFS_DIR3_DATA_MAGIC))
return false;
if (!uuid_equal(&hdr3->uuid, &mp->m_sb.sb_uuid))
return false;
if (be64_to_cpu(hdr3->blkno) != bp->b_bn)
return false;
} else {
if (hdr3->magic != cpu_to_be32(XFS_DIR2_DATA_MAGIC))
return false;
}
if (__xfs_dir3_data_check(NULL, bp))
return false;
return true;
}
/*
@ -212,7 +221,7 @@ xfs_dir2_data_verify(
* format buffer or a data format buffer on readahead.
*/
static void
xfs_dir2_data_reada_verify(
xfs_dir3_data_reada_verify(
struct xfs_buf *bp)
{
struct xfs_mount *mp = bp->b_target->bt_mount;
@ -225,7 +234,8 @@ xfs_dir2_data_reada_verify(
bp->b_ops->verify_read(bp);
return;
case cpu_to_be32(XFS_DIR2_DATA_MAGIC):
xfs_dir2_data_verify(bp);
case cpu_to_be32(XFS_DIR3_DATA_MAGIC):
xfs_dir3_data_verify(bp);
return;
default:
XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, hdr);
@ -235,32 +245,56 @@ xfs_dir2_data_reada_verify(
}
static void
xfs_dir2_data_read_verify(
xfs_dir3_data_read_verify(
struct xfs_buf *bp)
{
xfs_dir2_data_verify(bp);
struct xfs_mount *mp = bp->b_target->bt_mount;
if ((xfs_sb_version_hascrc(&mp->m_sb) &&
!xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length),
XFS_DIR3_DATA_CRC_OFF)) ||
!xfs_dir3_data_verify(bp)) {
XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr);
xfs_buf_ioerror(bp, EFSCORRUPTED);
}
}
static void
xfs_dir2_data_write_verify(
xfs_dir3_data_write_verify(
struct xfs_buf *bp)
{
xfs_dir2_data_verify(bp);
struct xfs_mount *mp = bp->b_target->bt_mount;
struct xfs_buf_log_item *bip = bp->b_fspriv;
struct xfs_dir3_blk_hdr *hdr3 = bp->b_addr;
if (!xfs_dir3_data_verify(bp)) {
XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr);
xfs_buf_ioerror(bp, EFSCORRUPTED);
return;
}
if (!xfs_sb_version_hascrc(&mp->m_sb))
return;
if (bip)
hdr3->lsn = cpu_to_be64(bip->bli_item.li_lsn);
xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), XFS_DIR3_DATA_CRC_OFF);
}
const struct xfs_buf_ops xfs_dir2_data_buf_ops = {
.verify_read = xfs_dir2_data_read_verify,
.verify_write = xfs_dir2_data_write_verify,
const struct xfs_buf_ops xfs_dir3_data_buf_ops = {
.verify_read = xfs_dir3_data_read_verify,
.verify_write = xfs_dir3_data_write_verify,
};
static const struct xfs_buf_ops xfs_dir2_data_reada_buf_ops = {
.verify_read = xfs_dir2_data_reada_verify,
.verify_write = xfs_dir2_data_write_verify,
static const struct xfs_buf_ops xfs_dir3_data_reada_buf_ops = {
.verify_read = xfs_dir3_data_reada_verify,
.verify_write = xfs_dir3_data_write_verify,
};
int
xfs_dir2_data_read(
xfs_dir3_data_read(
struct xfs_trans *tp,
struct xfs_inode *dp,
xfs_dablk_t bno,
@ -268,18 +302,18 @@ xfs_dir2_data_read(
struct xfs_buf **bpp)
{
return xfs_da_read_buf(tp, dp, bno, mapped_bno, bpp,
XFS_DATA_FORK, &xfs_dir2_data_buf_ops);
XFS_DATA_FORK, &xfs_dir3_data_buf_ops);
}
int
xfs_dir2_data_readahead(
xfs_dir3_data_readahead(
struct xfs_trans *tp,
struct xfs_inode *dp,
xfs_dablk_t bno,
xfs_daddr_t mapped_bno)
{
return xfs_da_reada_buf(tp, dp, bno, mapped_bno,
XFS_DATA_FORK, &xfs_dir2_data_reada_buf_ops);
XFS_DATA_FORK, &xfs_dir3_data_reada_buf_ops);
}
/*
@ -309,6 +343,7 @@ xfs_dir2_data_freefind(
* one we're looking for it has to be exact.
*/
ASSERT(hdr->magic == cpu_to_be32(XFS_DIR2_DATA_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR3_DATA_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR2_BLOCK_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR3_BLOCK_MAGIC));
for (dfp = &bf[0], seenzero = matched = 0;
@ -458,6 +493,7 @@ xfs_dir2_data_freescan(
char *p; /* current entry pointer */
ASSERT(hdr->magic == cpu_to_be32(XFS_DIR2_DATA_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR3_DATA_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR2_BLOCK_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR3_BLOCK_MAGIC));
@ -534,13 +570,12 @@ xfs_dir3_data_init(
XFS_DATA_FORK);
if (error)
return error;
bp->b_ops = &xfs_dir2_data_buf_ops;
bp->b_ops = &xfs_dir3_data_buf_ops;
/*
* Initialize the header.
*/
hdr = bp->b_addr;
if (xfs_sb_version_hascrc(&mp->m_sb)) {
struct xfs_dir3_blk_hdr *hdr3 = bp->b_addr;
@ -591,6 +626,7 @@ xfs_dir2_data_log_entry(
xfs_dir2_data_hdr_t *hdr = bp->b_addr;
ASSERT(hdr->magic == cpu_to_be32(XFS_DIR2_DATA_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR3_DATA_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR2_BLOCK_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR3_BLOCK_MAGIC));
@ -610,6 +646,7 @@ xfs_dir2_data_log_header(
xfs_dir2_data_hdr_t *hdr = bp->b_addr;
ASSERT(hdr->magic == cpu_to_be32(XFS_DIR2_DATA_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR3_DATA_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR2_BLOCK_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR3_BLOCK_MAGIC));
@ -628,6 +665,7 @@ xfs_dir2_data_log_unused(
xfs_dir2_data_hdr_t *hdr = bp->b_addr;
ASSERT(hdr->magic == cpu_to_be32(XFS_DIR2_DATA_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR3_DATA_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR2_BLOCK_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR3_BLOCK_MAGIC));
@ -675,7 +713,8 @@ xfs_dir2_data_make_free(
/*
* Figure out where the end of the data area is.
*/
if (hdr->magic == cpu_to_be32(XFS_DIR2_DATA_MAGIC))
if (hdr->magic == cpu_to_be32(XFS_DIR2_DATA_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR3_DATA_MAGIC))
endptr = (char *)hdr + mp->m_dirblksize;
else {
xfs_dir2_block_tail_t *btp; /* block tail */
@ -857,6 +896,7 @@ xfs_dir2_data_use_free(
hdr = bp->b_addr;
ASSERT(hdr->magic == cpu_to_be32(XFS_DIR2_DATA_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR3_DATA_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR2_BLOCK_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR3_BLOCK_MAGIC));
ASSERT(be16_to_cpu(dup->freetag) == XFS_DIR2_DATA_FREE_TAG);

21
fs/xfs/xfs_dir2_format.h
View File

@ -283,7 +283,8 @@ struct xfs_dir3_data_hdr {
static inline struct xfs_dir2_data_free *
xfs_dir3_data_bestfree_p(struct xfs_dir2_data_hdr *hdr)
{
if (hdr->magic == cpu_to_be32(XFS_DIR3_BLOCK_MAGIC)) {
if (hdr->magic == cpu_to_be32(XFS_DIR3_DATA_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR3_BLOCK_MAGIC)) {
struct xfs_dir3_data_hdr *hdr3 = (struct xfs_dir3_data_hdr *)hdr;
return hdr3->best_free;
}
@ -345,17 +346,6 @@ xfs_dir2_data_unused_tag_p(struct xfs_dir2_data_unused *dup)
be16_to_cpu(dup->length) - sizeof(__be16));
}
static inline struct xfs_dir2_data_unused *
xfs_dir3_data_unused_p(struct xfs_dir2_data_hdr *hdr)
{
if (hdr->magic == cpu_to_be32(XFS_DIR3_BLOCK_MAGIC)) {
return (struct xfs_dir2_data_unused *)
((char *)hdr + sizeof(struct xfs_dir3_data_hdr));
}
return (struct xfs_dir2_data_unused *)
((char *)hdr + sizeof(struct xfs_dir2_data_hdr));
}
static inline size_t
xfs_dir3_data_hdr_size(bool dir3)
{
@ -379,6 +369,13 @@ xfs_dir3_data_entry_p(struct xfs_dir2_data_hdr *hdr)
((char *)hdr + xfs_dir3_data_entry_offset(hdr));
}
static inline struct xfs_dir2_data_unused *
xfs_dir3_data_unused_p(struct xfs_dir2_data_hdr *hdr)
{
return (struct xfs_dir2_data_unused *)
((char *)hdr + xfs_dir3_data_entry_offset(hdr));
}
/*
* Offsets of . and .. in data space (always block 0)
*/

71
fs/xfs/xfs_dir2_leaf.c
View File

@ -149,7 +149,7 @@ xfs_dir2_block_to_leaf(
int needlog; /* need to log block header */
int needscan; /* need to rescan bestfree */
xfs_trans_t *tp; /* transaction pointer */
struct xfs_dir2_data_free *bf;
struct xfs_dir2_data_free *bf;
trace_xfs_dir2_block_to_leaf(args);
@ -175,7 +175,7 @@ xfs_dir2_block_to_leaf(
ASSERT(lbp != NULL);
leaf = lbp->b_addr;
hdr = dbp->b_addr;
xfs_dir2_data_check(dp, dbp);
xfs_dir3_data_check(dp, dbp);
btp = xfs_dir2_block_tail_p(mp, hdr);
blp = xfs_dir2_block_leaf_p(btp);
bf = xfs_dir3_data_bestfree_p(hdr);
@ -204,8 +204,12 @@ xfs_dir2_block_to_leaf(
/*
* Fix up the block header, make it a data block.
*/
dbp->b_ops = &xfs_dir2_data_buf_ops;
hdr->magic = cpu_to_be32(XFS_DIR2_DATA_MAGIC);
dbp->b_ops = &xfs_dir3_data_buf_ops;
if (hdr->magic == cpu_to_be32(XFS_DIR2_BLOCK_MAGIC))
hdr->magic = cpu_to_be32(XFS_DIR2_DATA_MAGIC);
else
hdr->magic = cpu_to_be32(XFS_DIR3_DATA_MAGIC);
if (needscan)
xfs_dir2_data_freescan(mp, hdr, &needlog);
/*
@ -221,7 +225,7 @@ xfs_dir2_block_to_leaf(
if (needlog)
xfs_dir2_data_log_header(tp, dbp);
xfs_dir2_leaf_check(dp, lbp);
xfs_dir2_data_check(dp, dbp);
xfs_dir3_data_check(dp, dbp);
xfs_dir2_leaf_log_bests(tp, lbp, 0, 0);
return 0;
}
@ -385,6 +389,7 @@ xfs_dir2_leaf_addname(
__be16 *tagp; /* end of data entry */
xfs_trans_t *tp; /* transaction pointer */
xfs_dir2_db_t use_block; /* data block number */
struct xfs_dir2_data_free *bf; /* bestfree table */
trace_xfs_dir2_leaf_addname(args);
@ -568,14 +573,15 @@ xfs_dir2_leaf_addname(
else
xfs_dir2_leaf_log_bests(tp, lbp, use_block, use_block);
hdr = dbp->b_addr;
bestsp[use_block] = hdr->bestfree[0].length;
bf = xfs_dir3_data_bestfree_p(hdr);
bestsp[use_block] = bf[0].length;
grown = 1;
} else {
/*
* Already had space in some data block.
* Just read that one in.
*/
error = xfs_dir2_data_read(tp, dp,
error = xfs_dir3_data_read(tp, dp,
xfs_dir2_db_to_da(mp, use_block),
-1, &dbp);
if (error) {
@ -583,13 +589,14 @@ xfs_dir2_leaf_addname(
return error;
}
hdr = dbp->b_addr;
bf = xfs_dir3_data_bestfree_p(hdr);
grown = 0;
}
/*
* Point to the biggest freespace in our data block.
*/
dup = (xfs_dir2_data_unused_t *)
((char *)hdr + be16_to_cpu(hdr->bestfree[0].offset));
((char *)hdr + be16_to_cpu(bf[0].offset));
ASSERT(be16_to_cpu(dup->length) >= length);
needscan = needlog = 0;
/*
@ -622,8 +629,8 @@ xfs_dir2_leaf_addname(
* If the bests table needs to be changed, do it.
* Log the change unless we've already done that.
*/
if (be16_to_cpu(bestsp[use_block]) != be16_to_cpu(hdr->bestfree[0].length)) {
bestsp[use_block] = hdr->bestfree[0].length;
if (be16_to_cpu(bestsp[use_block]) != be16_to_cpu(bf[0].length)) {
bestsp[use_block] = bf[0].length;
if (!grown)
xfs_dir2_leaf_log_bests(tp, lbp, use_block, use_block);
}
@ -643,7 +650,7 @@ xfs_dir2_leaf_addname(
xfs_dir2_leaf_log_header(tp, lbp);
xfs_dir2_leaf_log_ents(tp, lbp, lfloglow, lfloghigh);
xfs_dir2_leaf_check(dp, lbp);
xfs_dir2_data_check(dp, dbp);
xfs_dir3_data_check(dp, dbp);
return 0;
}
@ -967,7 +974,7 @@ xfs_dir2_leaf_readbuf(
* Read the directory block starting at the first mapping.
*/
mip->curdb = xfs_dir2_da_to_db(mp, map->br_startoff);
error = xfs_dir2_data_read(NULL, dp, map->br_startoff,
error = xfs_dir3_data_read(NULL, dp, map->br_startoff,
map->br_blockcount >= mp->m_dirblkfsbs ?
XFS_FSB_TO_DADDR(mp, map->br_startblock) : -1, &bp);
@ -996,7 +1003,7 @@ xfs_dir2_leaf_readbuf(
*/
if (i > mip->ra_current &&
map[mip->ra_index].br_blockcount >= mp->m_dirblkfsbs) {
xfs_dir2_data_readahead(NULL, dp,
xfs_dir3_data_readahead(NULL, dp,
map[mip->ra_index].br_startoff + mip->ra_offset,
XFS_FSB_TO_DADDR(mp,
map[mip->ra_index].br_startblock +
@ -1009,7 +1016,7 @@ xfs_dir2_leaf_readbuf(
* use our mapping, but this is a very rare case.
*/
else if (i > mip->ra_current) {
xfs_dir2_data_readahead(NULL, dp,
xfs_dir3_data_readahead(NULL, dp,
map[mip->ra_index].br_startoff +
mip->ra_offset, -1);
mip->ra_current = i;
@ -1135,17 +1142,17 @@ xfs_dir2_leaf_getdents(
ASSERT(xfs_dir2_byte_to_db(mp, curoff) ==
map_info->curdb);
hdr = bp->b_addr;
xfs_dir2_data_check(dp, bp);
xfs_dir3_data_check(dp, bp);
/*
* Find our position in the block.
*/
ptr = (char *)(hdr + 1);
ptr = (char *)xfs_dir3_data_entry_p(hdr);
byteoff = xfs_dir2_byte_to_off(mp, curoff);
/*
* Skip past the header.
*/
if (byteoff == 0)
curoff += (uint)sizeof(*hdr);
curoff += xfs_dir3_data_entry_offset(hdr);
/*
* Skip past entries until we reach our offset.
*/
@ -1481,7 +1488,7 @@ xfs_dir2_leaf_lookup_int(
if (newdb != curdb) {
if (dbp)
xfs_trans_brelse(tp, dbp);
error = xfs_dir2_data_read(tp, dp,
error = xfs_dir3_data_read(tp, dp,
xfs_dir2_db_to_da(mp, newdb),
-1, &dbp);
if (error) {
@ -1522,7 +1529,7 @@ xfs_dir2_leaf_lookup_int(
ASSERT(cidb != -1);
if (cidb != curdb) {
xfs_trans_brelse(tp, dbp);
error = xfs_dir2_data_read(tp, dp,
error = xfs_dir3_data_read(tp, dp,
xfs_dir2_db_to_da(mp, cidb),
-1, &dbp);
if (error) {
@ -1568,6 +1575,7 @@ xfs_dir2_leaf_removename(
int needscan; /* need to rescan data frees */
xfs_dir2_data_off_t oldbest; /* old value of best free */
xfs_trans_t *tp; /* transaction pointer */
struct xfs_dir2_data_free *bf; /* bestfree table */
trace_xfs_dir2_leaf_removename(args);
@ -1582,7 +1590,8 @@ xfs_dir2_leaf_removename(
mp = dp->i_mount;
leaf = lbp->b_addr;
hdr = dbp->b_addr;
xfs_dir2_data_check(dp, dbp);
bf = xfs_dir3_data_bestfree_p(hdr);
xfs_dir3_data_check(dp, dbp);
/*
* Point to the leaf entry, use that to point to the data entry.
*/
@ -1591,7 +1600,7 @@ xfs_dir2_leaf_removename(
dep = (xfs_dir2_data_entry_t *)
((char *)hdr + xfs_dir2_dataptr_to_off(mp, be32_to_cpu(lep->address)));
needscan = needlog = 0;
oldbest = be16_to_cpu(hdr->bestfree[0].length);
oldbest = be16_to_cpu(bf[0].length);
ltp = xfs_dir2_leaf_tail_p(mp, leaf);
bestsp = xfs_dir2_leaf_bests_p(ltp);
ASSERT(be16_to_cpu(bestsp[db]) == oldbest);
@ -1620,16 +1629,16 @@ xfs_dir2_leaf_removename(
* If the longest freespace in the data block has changed,
* put the new value in the bests table and log that.
*/
if (be16_to_cpu(hdr->bestfree[0].length) != oldbest) {
bestsp[db] = hdr->bestfree[0].length;
if (be16_to_cpu(bf[0].length) != oldbest) {
bestsp[db] = bf[0].length;
xfs_dir2_leaf_log_bests(tp, lbp, db, db);
}
xfs_dir2_data_check(dp, dbp);
xfs_dir3_data_check(dp, dbp);
/*
* If the data block is now empty then get rid of the data block.
*/
if (be16_to_cpu(hdr->bestfree[0].length) ==
mp->m_dirblksize - (uint)sizeof(*hdr)) {
if (be16_to_cpu(bf[0].length) ==
mp->m_dirblksize - xfs_dir3_data_entry_offset(hdr)) {
ASSERT(db != mp->m_dirdatablk);
if ((error = xfs_dir2_shrink_inode(args, db, dbp))) {
/*
@ -1809,7 +1818,7 @@ xfs_dir2_leaf_trim_data(
/*
* Read the offending data block. We need its buffer.
*/
error = xfs_dir2_data_read(tp, dp, xfs_dir2_db_to_da(mp, db), -1, &dbp);
error = xfs_dir3_data_read(tp, dp, xfs_dir2_db_to_da(mp, db), -1, &dbp);
if (error)
return error;
@ -1819,10 +1828,12 @@ xfs_dir2_leaf_trim_data(
#ifdef DEBUG
{
struct xfs_dir2_data_hdr *hdr = dbp->b_addr;
struct xfs_dir2_data_free *bf = xfs_dir3_data_bestfree_p(hdr);
ASSERT(hdr->magic == cpu_to_be32(XFS_DIR2_DATA_MAGIC));
ASSERT(be16_to_cpu(hdr->bestfree[0].length) ==
mp->m_dirblksize - (uint)sizeof(*hdr));
ASSERT(hdr->magic == cpu_to_be32(XFS_DIR2_DATA_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR3_DATA_MAGIC));
ASSERT(be16_to_cpu(bf[0].length) ==
mp->m_dirblksize - xfs_dir3_data_entry_offset(hdr));
ASSERT(db == be32_to_cpu(ltp->bestcount) - 1);
}
#endif

39
fs/xfs/xfs_dir2_node.c
View File

@ -753,13 +753,13 @@ xfs_dir2_leafn_lookup_for_entry(
ASSERT(state->extravalid);
curbp = state->extrablk.bp;
} else {
error = xfs_dir2_data_read(tp, dp,
error = xfs_dir3_data_read(tp, dp,
xfs_dir2_db_to_da(mp, newdb),
-1, &curbp);
if (error)
return error;
}
xfs_dir2_data_check(dp, curbp);
xfs_dir3_data_check(dp, curbp);
curdb = newdb;
}
/*
@ -787,7 +787,7 @@ xfs_dir2_leafn_lookup_for_entry(
state->extrablk.index = (int)((char *)dep -
(char *)curbp->b_addr);
state->extrablk.magic = XFS_DIR2_DATA_MAGIC;
curbp->b_ops = &xfs_dir2_data_buf_ops;
curbp->b_ops = &xfs_dir3_data_buf_ops;
if (cmp == XFS_CMP_EXACT)
return XFS_ERROR(EEXIST);
}
@ -802,7 +802,7 @@ xfs_dir2_leafn_lookup_for_entry(
state->extrablk.index = -1;
state->extrablk.blkno = curdb;
state->extrablk.magic = XFS_DIR2_DATA_MAGIC;
curbp->b_ops = &xfs_dir2_data_buf_ops;
curbp->b_ops = &xfs_dir3_data_buf_ops;
} else {
/* If the curbp is not the CI match block, drop it */
if (state->extrablk.bp != curbp)
@ -1152,6 +1152,7 @@ xfs_dir2_leafn_remove(
int needlog; /* need to log data header */
int needscan; /* need to rescan data frees */
xfs_trans_t *tp; /* transaction pointer */
struct xfs_dir2_data_free *bf; /* bestfree table */
trace_xfs_dir2_leafn_remove(args, index);
@ -1186,7 +1187,8 @@ xfs_dir2_leafn_remove(
dbp = dblk->bp;
hdr = dbp->b_addr;
dep = (xfs_dir2_data_entry_t *)((char *)hdr + off);
longest = be16_to_cpu(hdr->bestfree[0].length);
bf = xfs_dir3_data_bestfree_p(hdr);
longest = be16_to_cpu(bf[0].length);
needlog = needscan = 0;
xfs_dir2_data_make_free(tp, dbp, off,
xfs_dir2_data_entsize(dep->namelen), &needlog, &needscan);
@ -1198,12 +1200,12 @@ xfs_dir2_leafn_remove(
xfs_dir2_data_freescan(mp, hdr, &needlog);
if (needlog)
xfs_dir2_data_log_header(tp, dbp);
xfs_dir2_data_check(dp, dbp);
xfs_dir3_data_check(dp, dbp);
/*
* If the longest data block freespace changes, need to update
* the corresponding freeblock entry.
*/
if (longest < be16_to_cpu(hdr->bestfree[0].length)) {
if (longest < be16_to_cpu(bf[0].length)) {
int error; /* error return value */
struct xfs_buf *fbp; /* freeblock buffer */
xfs_dir2_db_t fdb; /* freeblock block number */
@ -1232,12 +1234,13 @@ xfs_dir2_leafn_remove(
* Calculate which entry we need to fix.
*/
findex = xfs_dir2_db_to_fdindex(mp, db);
longest = be16_to_cpu(hdr->bestfree[0].length);
longest = be16_to_cpu(bf[0].length);
/*
* If the data block is now empty we can get rid of it
* (usually).
*/
if (longest == mp->m_dirblksize - (uint)sizeof(*hdr)) {
if (longest == mp->m_dirblksize -
xfs_dir3_data_entry_offset(hdr)) {
/*
* Try to punch out the data block.
*/
@ -1611,6 +1614,7 @@ xfs_dir2_node_addname_int(
xfs_trans_t *tp; /* transaction pointer */
__be16 *bests;
struct xfs_dir3_icfree_hdr freehdr;
struct xfs_dir2_data_free *bf;
dp = args->dp;
mp = dp->i_mount;
@ -1868,7 +1872,8 @@ xfs_dir2_node_addname_int(
* change again.
*/
hdr = dbp->b_addr;
bests[findex] = hdr->bestfree[0].length;
bf = xfs_dir3_data_bestfree_p(hdr);
bests[findex] = bf[0].length;
logfree = 1;
}
/*
@ -1884,19 +1889,20 @@ xfs_dir2_node_addname_int(
/*
* Read the data block in.
*/
error = xfs_dir2_data_read(tp, dp, xfs_dir2_db_to_da(mp, dbno),
error = xfs_dir3_data_read(tp, dp, xfs_dir2_db_to_da(mp, dbno),
-1, &dbp);
if (error)
return error;
hdr = dbp->b_addr;
bf = xfs_dir3_data_bestfree_p(hdr);
logfree = 0;
}
ASSERT(be16_to_cpu(hdr->bestfree[0].length) >= length);
ASSERT(be16_to_cpu(bf[0].length) >= length);
/*
* Point to the existing unused space.
*/
dup = (xfs_dir2_data_unused_t *)
((char *)hdr + be16_to_cpu(hdr->bestfree[0].offset));
((char *)hdr + be16_to_cpu(bf[0].offset));
needscan = needlog = 0;
/*
* Mark the first part of the unused space, inuse for us.
@ -1928,8 +1934,8 @@ xfs_dir2_node_addname_int(
* If the freespace entry is now wrong, update it.
*/
bests = xfs_dir3_free_bests_p(mp, free); /* gcc is so stupid */
if (be16_to_cpu(bests[findex]) != be16_to_cpu(hdr->bestfree[0].length)) {
bests[findex] = hdr->bestfree[0].length;
if (be16_to_cpu(bests[findex]) != be16_to_cpu(bf[0].length)) {
bests[findex] = bf[0].length;
logfree = 1;
}
/*
@ -2119,7 +2125,8 @@ xfs_dir2_node_replace(
* Point to the data entry.
*/
hdr = state->extrablk.bp->b_addr;
ASSERT(hdr->magic == cpu_to_be32(XFS_DIR2_DATA_MAGIC));
ASSERT(hdr->magic == cpu_to_be32(XFS_DIR2_DATA_MAGIC) ||
hdr->magic == cpu_to_be32(XFS_DIR3_DATA_MAGIC));
dep = (xfs_dir2_data_entry_t *)
((char *)hdr +
xfs_dir2_dataptr_to_off(state->mp, be32_to_cpu(lep->address)));

12
fs/xfs/xfs_dir2_priv.h
View File

@ -43,17 +43,17 @@ extern int xfs_dir2_leaf_to_block(struct xfs_da_args *args,
/* xfs_dir2_data.c */
#ifdef DEBUG
#define xfs_dir2_data_check(dp,bp) __xfs_dir2_data_check(dp, bp);
#define xfs_dir3_data_check(dp,bp) __xfs_dir3_data_check(dp, bp);
#else
#define xfs_dir2_data_check(dp,bp)
#define xfs_dir3_data_check(dp,bp)
#endif
extern const struct xfs_buf_ops xfs_dir2_data_buf_ops;
extern const struct xfs_buf_ops xfs_dir3_data_buf_ops;
extern int __xfs_dir2_data_check(struct xfs_inode *dp, struct xfs_buf *bp);
extern int xfs_dir2_data_read(struct xfs_trans *tp, struct xfs_inode *dp,
extern int __xfs_dir3_data_check(struct xfs_inode *dp, struct xfs_buf *bp);
extern int xfs_dir3_data_read(struct xfs_trans *tp, struct xfs_inode *dp,
xfs_dablk_t bno, xfs_daddr_t mapped_bno, struct xfs_buf **bpp);
extern int xfs_dir2_data_readahead(struct xfs_trans *tp, struct xfs_inode *dp,
extern int xfs_dir3_data_readahead(struct xfs_trans *tp, struct xfs_inode *dp,
xfs_dablk_t bno, xfs_daddr_t mapped_bno);
extern struct xfs_dir2_data_free *

2
fs/xfs/xfs_file.c
View File

@ -893,7 +893,7 @@ xfs_dir_open(
*/
mode = xfs_ilock_map_shared(ip);
if (ip->i_d.di_nextents > 0)
xfs_dir2_data_readahead(NULL, ip, 0, -1);
xfs_dir3_data_readahead(NULL, ip, 0, -1);
xfs_iunlock(ip, mode);
return 0;
}