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xfs: bugfixes for 3.8-rc4

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- fix(es) for compound buffers
 - fix for dquot soft timer asserts due to overflow of d_blk_softlimit
 - fix for regression in dir v2 code introduced in commit 20f7e9f3
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Merge tag 'for-linus-v3.8-rc4' of git://oss.sgi.com/xfs/xfs

Pull xfs bugfixes from Ben Myers:

 - fix(es) for compound buffers

 - fix for dquot soft timer asserts due to overflow of d_blk_softlimit

 - fix for regression in dir v2 code introduced in commit 20f7e9f3726a
   ("xfs: factor dir2 block read operations")

* tag 'for-linus-v3.8-rc4' of git://oss.sgi.com/xfs/xfs:
  xfs: recalculate leaf entry pointer after compacting a dir2 block
  xfs: remove int casts from debug dquot soft limit timer asserts
  xfs: fix the multi-segment log buffer format
  xfs: fix segment in xfs_buf_item_format_segment
  xfs: rename bli_format to avoid confusion with bli_formats
  xfs: use b_maps[] for discontiguous buffers
This commit is contained in:
Linus Torvalds 2013-01-16 16:19:54 -08:00
commit dfdebc2483
7 changed files with 64 additions and 42 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
fs/xfs/xfs_buf.c
View File

@ -175,7 +175,7 @@ xfs_buf_get_maps(
bp->b_map_count = map_count; bp->b_map_count = map_count;
if (map_count == 1) { if (map_count == 1) {
bp->b_maps = &bp->b_map; bp->b_maps = &bp->__b_map;
return 0; return 0;
} }
@ -193,7 +193,7 @@ static void
xfs_buf_free_maps( xfs_buf_free_maps(
struct xfs_buf *bp) struct xfs_buf *bp)
{ {
if (bp->b_maps != &bp->b_map) { if (bp->b_maps != &bp->__b_map) {
kmem_free(bp->b_maps); kmem_free(bp->b_maps);
bp->b_maps = NULL; bp->b_maps = NULL;
} }
@ -377,8 +377,8 @@ xfs_buf_allocate_memory(
} }
use_alloc_page: use_alloc_page:
start = BBTOB(bp->b_map.bm_bn) >> PAGE_SHIFT; start = BBTOB(bp->b_maps[0].bm_bn) >> PAGE_SHIFT;
end = (BBTOB(bp->b_map.bm_bn + bp->b_length) + PAGE_SIZE - 1) end = (BBTOB(bp->b_maps[0].bm_bn + bp->b_length) + PAGE_SIZE - 1)
>> PAGE_SHIFT; >> PAGE_SHIFT;
page_count = end - start; page_count = end - start;
error = _xfs_buf_get_pages(bp, page_count, flags); error = _xfs_buf_get_pages(bp, page_count, flags);
@ -640,7 +640,7 @@ _xfs_buf_read(
xfs_buf_flags_t flags) xfs_buf_flags_t flags)
{ {
ASSERT(!(flags & XBF_WRITE)); ASSERT(!(flags & XBF_WRITE));
ASSERT(bp->b_map.bm_bn != XFS_BUF_DADDR_NULL); ASSERT(bp->b_maps[0].bm_bn != XFS_BUF_DADDR_NULL);
bp->b_flags &= ~(XBF_WRITE | XBF_ASYNC | XBF_READ_AHEAD); bp->b_flags &= ~(XBF_WRITE | XBF_ASYNC | XBF_READ_AHEAD);
bp->b_flags |= flags & (XBF_READ | XBF_ASYNC | XBF_READ_AHEAD); bp->b_flags |= flags & (XBF_READ | XBF_ASYNC | XBF_READ_AHEAD);
@ -1709,7 +1709,7 @@ xfs_buf_cmp(
struct xfs_buf *bp = container_of(b, struct xfs_buf, b_list); struct xfs_buf *bp = container_of(b, struct xfs_buf, b_list);
xfs_daddr_t diff; xfs_daddr_t diff;
diff = ap->b_map.bm_bn - bp->b_map.bm_bn; diff = ap->b_maps[0].bm_bn - bp->b_maps[0].bm_bn;
if (diff < 0) if (diff < 0)
return -1; return -1;
if (diff > 0) if (diff > 0)

6
fs/xfs/xfs_buf.h
View File

@ -151,7 +151,7 @@ typedef struct xfs_buf {
struct page **b_pages; /* array of page pointers */ struct page **b_pages; /* array of page pointers */
struct page *b_page_array[XB_PAGES]; /* inline pages */ struct page *b_page_array[XB_PAGES]; /* inline pages */
struct xfs_buf_map *b_maps; /* compound buffer map */ struct xfs_buf_map *b_maps; /* compound buffer map */
struct xfs_buf_map b_map; /* inline compound buffer map */ struct xfs_buf_map __b_map; /* inline compound buffer map */
int b_map_count; int b_map_count;
int b_io_length; /* IO size in BBs */ int b_io_length; /* IO size in BBs */
atomic_t b_pin_count; /* pin count */ atomic_t b_pin_count; /* pin count */
@ -330,8 +330,8 @@ void xfs_buf_stale(struct xfs_buf *bp);
* In future, uncached buffers will pass the block number directly to the io * In future, uncached buffers will pass the block number directly to the io
* request function and hence these macros will go away at that point. * request function and hence these macros will go away at that point.
*/ */
#define XFS_BUF_ADDR(bp) ((bp)->b_map.bm_bn) #define XFS_BUF_ADDR(bp) ((bp)->b_maps[0].bm_bn)
#define XFS_BUF_SET_ADDR(bp, bno) ((bp)->b_map.bm_bn = (xfs_daddr_t)(bno)) #define XFS_BUF_SET_ADDR(bp, bno) ((bp)->b_maps[0].bm_bn = (xfs_daddr_t)(bno))
static inline void xfs_buf_set_ref(struct xfs_buf *bp, int lru_ref) static inline void xfs_buf_set_ref(struct xfs_buf *bp, int lru_ref)
{ {

49
fs/xfs/xfs_buf_item.c
View File

@ -71,7 +71,7 @@ xfs_buf_item_log_debug(
chunk_num = byte >> XFS_BLF_SHIFT; chunk_num = byte >> XFS_BLF_SHIFT;
word_num = chunk_num >> BIT_TO_WORD_SHIFT; word_num = chunk_num >> BIT_TO_WORD_SHIFT;
bit_num = chunk_num & (NBWORD - 1); bit_num = chunk_num & (NBWORD - 1);
wordp = &(bip->bli_format.blf_data_map[word_num]); wordp = &(bip->__bli_format.blf_data_map[word_num]);
bit_set = *wordp & (1 << bit_num); bit_set = *wordp & (1 << bit_num);
ASSERT(bit_set); ASSERT(bit_set);
byte++; byte++;
@ -237,7 +237,7 @@ xfs_buf_item_size(
* cancel flag in it. * cancel flag in it.
*/ */
trace_xfs_buf_item_size_stale(bip); trace_xfs_buf_item_size_stale(bip);
ASSERT(bip->bli_format.blf_flags & XFS_BLF_CANCEL); ASSERT(bip->__bli_format.blf_flags & XFS_BLF_CANCEL);
return bip->bli_format_count; return bip->bli_format_count;
} }
@ -278,7 +278,7 @@ xfs_buf_item_format_segment(
uint buffer_offset; uint buffer_offset;
/* copy the flags across from the base format item */ /* copy the flags across from the base format item */
blfp->blf_flags = bip->bli_format.blf_flags; blfp->blf_flags = bip->__bli_format.blf_flags;
/* /*
* Base size is the actual size of the ondisk structure - it reflects * Base size is the actual size of the ondisk structure - it reflects
@ -287,6 +287,17 @@ xfs_buf_item_format_segment(
*/ */
base_size = offsetof(struct xfs_buf_log_format, blf_data_map) + base_size = offsetof(struct xfs_buf_log_format, blf_data_map) +
(blfp->blf_map_size * sizeof(blfp->blf_data_map[0])); (blfp->blf_map_size * sizeof(blfp->blf_data_map[0]));
nvecs = 0;
first_bit = xfs_next_bit(blfp->blf_data_map, blfp->blf_map_size, 0);
if (!(bip->bli_flags & XFS_BLI_STALE) && first_bit == -1) {
/*
* If the map is not be dirty in the transaction, mark
* the size as zero and do not advance the vector pointer.
*/
goto out;
}
vecp->i_addr = blfp; vecp->i_addr = blfp;
vecp->i_len = base_size; vecp->i_len = base_size;
vecp->i_type = XLOG_REG_TYPE_BFORMAT; vecp->i_type = XLOG_REG_TYPE_BFORMAT;
@ -301,15 +312,13 @@ xfs_buf_item_format_segment(
*/ */
trace_xfs_buf_item_format_stale(bip); trace_xfs_buf_item_format_stale(bip);
ASSERT(blfp->blf_flags & XFS_BLF_CANCEL); ASSERT(blfp->blf_flags & XFS_BLF_CANCEL);
blfp->blf_size = nvecs; goto out;
return vecp;
} }
/* /*
* Fill in an iovec for each set of contiguous chunks. * Fill in an iovec for each set of contiguous chunks.
*/ */
first_bit = xfs_next_bit(blfp->blf_data_map, blfp->blf_map_size, 0);
ASSERT(first_bit != -1);
last_bit = first_bit; last_bit = first_bit;
nbits = 1; nbits = 1;
for (;;) { for (;;) {
@ -371,7 +380,8 @@ xfs_buf_item_format_segment(
nbits++; nbits++;
} }
} }
bip->bli_format.blf_size = nvecs; out:
blfp->blf_size = nvecs;
return vecp; return vecp;
} }
@ -405,7 +415,7 @@ xfs_buf_item_format(
if (bip->bli_flags & XFS_BLI_INODE_BUF) { if (bip->bli_flags & XFS_BLI_INODE_BUF) {
if (!((bip->bli_flags & XFS_BLI_INODE_ALLOC_BUF) && if (!((bip->bli_flags & XFS_BLI_INODE_ALLOC_BUF) &&
xfs_log_item_in_current_chkpt(lip))) xfs_log_item_in_current_chkpt(lip)))
bip->bli_format.blf_flags |= XFS_BLF_INODE_BUF; bip->__bli_format.blf_flags |= XFS_BLF_INODE_BUF;
bip->bli_flags &= ~XFS_BLI_INODE_BUF; bip->bli_flags &= ~XFS_BLI_INODE_BUF;
} }
@ -485,7 +495,7 @@ xfs_buf_item_unpin(
ASSERT(bip->bli_flags & XFS_BLI_STALE); ASSERT(bip->bli_flags & XFS_BLI_STALE);
ASSERT(xfs_buf_islocked(bp)); ASSERT(xfs_buf_islocked(bp));
ASSERT(XFS_BUF_ISSTALE(bp)); ASSERT(XFS_BUF_ISSTALE(bp));
ASSERT(bip->bli_format.blf_flags & XFS_BLF_CANCEL); ASSERT(bip->__bli_format.blf_flags & XFS_BLF_CANCEL);
trace_xfs_buf_item_unpin_stale(bip); trace_xfs_buf_item_unpin_stale(bip);
@ -601,7 +611,7 @@ xfs_buf_item_unlock(
{ {
struct xfs_buf_log_item *bip = BUF_ITEM(lip); struct xfs_buf_log_item *bip = BUF_ITEM(lip);
struct xfs_buf *bp = bip->bli_buf; struct xfs_buf *bp = bip->bli_buf;
int aborted; int aborted, clean, i;
uint hold; uint hold;
/* Clear the buffer's association with this transaction. */ /* Clear the buffer's association with this transaction. */
@ -631,7 +641,7 @@ xfs_buf_item_unlock(
*/ */
if (bip->bli_flags & XFS_BLI_STALE) { if (bip->bli_flags & XFS_BLI_STALE) {
trace_xfs_buf_item_unlock_stale(bip); trace_xfs_buf_item_unlock_stale(bip);
ASSERT(bip->bli_format.blf_flags & XFS_BLF_CANCEL); ASSERT(bip->__bli_format.blf_flags & XFS_BLF_CANCEL);
if (!aborted) { if (!aborted) {
atomic_dec(&bip->bli_refcount); atomic_dec(&bip->bli_refcount);
return; return;
@ -644,8 +654,15 @@ xfs_buf_item_unlock(
* If the buf item isn't tracking any data, free it, otherwise drop the * If the buf item isn't tracking any data, free it, otherwise drop the
* reference we hold to it. * reference we hold to it.
*/ */
if (xfs_bitmap_empty(bip->bli_format.blf_data_map, clean = 1;
bip->bli_format.blf_map_size)) for (i = 0; i < bip->bli_format_count; i++) {
if (!xfs_bitmap_empty(bip->bli_formats[i].blf_data_map,
bip->bli_formats[i].blf_map_size)) {
clean = 0;
break;
}
}
if (clean)
xfs_buf_item_relse(bp); xfs_buf_item_relse(bp);
else else
atomic_dec(&bip->bli_refcount); atomic_dec(&bip->bli_refcount);
@ -716,7 +733,7 @@ xfs_buf_item_get_format(
bip->bli_format_count = count; bip->bli_format_count = count;
if (count == 1) { if (count == 1) {
bip->bli_formats = &bip->bli_format; bip->bli_formats = &bip->__bli_format;
return 0; return 0;
} }
@ -731,7 +748,7 @@ STATIC void
xfs_buf_item_free_format( xfs_buf_item_free_format(
struct xfs_buf_log_item *bip) struct xfs_buf_log_item *bip)
{ {
if (bip->bli_formats != &bip->bli_format) { if (bip->bli_formats != &bip->__bli_format) {
kmem_free(bip->bli_formats); kmem_free(bip->bli_formats);
bip->bli_formats = NULL; bip->bli_formats = NULL;
} }

2
fs/xfs/xfs_buf_item.h
View File

@ -104,7 +104,7 @@ typedef struct xfs_buf_log_item {
#endif #endif
int bli_format_count; /* count of headers */ int bli_format_count; /* count of headers */
struct xfs_buf_log_format *bli_formats; /* array of in-log header ptrs */ struct xfs_buf_log_format *bli_formats; /* array of in-log header ptrs */
struct xfs_buf_log_format bli_format; /* embedded in-log header */ struct xfs_buf_log_format __bli_format; /* embedded in-log header */
} xfs_buf_log_item_t; } xfs_buf_log_item_t;
void xfs_buf_item_init(struct xfs_buf *, struct xfs_mount *); void xfs_buf_item_init(struct xfs_buf *, struct xfs_mount *);

6
fs/xfs/xfs_dir2_block.c
View File

@ -355,10 +355,12 @@ xfs_dir2_block_addname(
/* /*
* If need to compact the leaf entries, do it now. * If need to compact the leaf entries, do it now.
*/ */
if (compact) if (compact) {
xfs_dir2_block_compact(tp, bp, hdr, btp, blp, &needlog, xfs_dir2_block_compact(tp, bp, hdr, btp, blp, &needlog,
&lfloghigh, &lfloglow); &lfloghigh, &lfloglow);
else if (btp->stale) { /* recalculate blp post-compaction */
blp = xfs_dir2_block_leaf_p(btp);
} else if (btp->stale) {
/* /*
* Set leaf logging boundaries to impossible state. * Set leaf logging boundaries to impossible state.
* For the no-stale case they're set explicitly. * For the no-stale case they're set explicitly.

4
fs/xfs/xfs_qm_syscalls.c
View File

@ -784,11 +784,11 @@ xfs_qm_scall_getquota(
(XFS_IS_OQUOTA_ENFORCED(mp) && (XFS_IS_OQUOTA_ENFORCED(mp) &&
(dst->d_flags & (FS_PROJ_QUOTA | FS_GROUP_QUOTA)))) && (dst->d_flags & (FS_PROJ_QUOTA | FS_GROUP_QUOTA)))) &&
dst->d_id != 0) { dst->d_id != 0) {
if (((int) dst->d_bcount > (int) dst->d_blk_softlimit) && if ((dst->d_bcount > dst->d_blk_softlimit) &&
(dst->d_blk_softlimit > 0)) { (dst->d_blk_softlimit > 0)) {
ASSERT(dst->d_btimer != 0); ASSERT(dst->d_btimer != 0);
} }
if (((int) dst->d_icount > (int) dst->d_ino_softlimit) && if ((dst->d_icount > dst->d_ino_softlimit) &&
(dst->d_ino_softlimit > 0)) { (dst->d_ino_softlimit > 0)) {
ASSERT(dst->d_itimer != 0); ASSERT(dst->d_itimer != 0);
} }

27
fs/xfs/xfs_trans_buf.c
View File

@ -93,7 +93,7 @@ _xfs_trans_bjoin(
xfs_buf_item_init(bp, tp->t_mountp); xfs_buf_item_init(bp, tp->t_mountp);
bip = bp->b_fspriv; bip = bp->b_fspriv;
ASSERT(!(bip->bli_flags & XFS_BLI_STALE)); ASSERT(!(bip->bli_flags & XFS_BLI_STALE));
ASSERT(!(bip->bli_format.blf_flags & XFS_BLF_CANCEL)); ASSERT(!(bip->__bli_format.blf_flags & XFS_BLF_CANCEL));
ASSERT(!(bip->bli_flags & XFS_BLI_LOGGED)); ASSERT(!(bip->bli_flags & XFS_BLI_LOGGED));
if (reset_recur) if (reset_recur)
bip->bli_recur = 0; bip->bli_recur = 0;
@ -432,7 +432,7 @@ xfs_trans_brelse(xfs_trans_t *tp,
bip = bp->b_fspriv; bip = bp->b_fspriv;
ASSERT(bip->bli_item.li_type == XFS_LI_BUF); ASSERT(bip->bli_item.li_type == XFS_LI_BUF);
ASSERT(!(bip->bli_flags & XFS_BLI_STALE)); ASSERT(!(bip->bli_flags & XFS_BLI_STALE));
ASSERT(!(bip->bli_format.blf_flags & XFS_BLF_CANCEL)); ASSERT(!(bip->__bli_format.blf_flags & XFS_BLF_CANCEL));
ASSERT(atomic_read(&bip->bli_refcount) > 0); ASSERT(atomic_read(&bip->bli_refcount) > 0);
trace_xfs_trans_brelse(bip); trace_xfs_trans_brelse(bip);
@ -519,7 +519,7 @@ xfs_trans_bhold(xfs_trans_t *tp,
ASSERT(bp->b_transp == tp); ASSERT(bp->b_transp == tp);
ASSERT(bip != NULL); ASSERT(bip != NULL);
ASSERT(!(bip->bli_flags & XFS_BLI_STALE)); ASSERT(!(bip->bli_flags & XFS_BLI_STALE));
ASSERT(!(bip->bli_format.blf_flags & XFS_BLF_CANCEL)); ASSERT(!(bip->__bli_format.blf_flags & XFS_BLF_CANCEL));
ASSERT(atomic_read(&bip->bli_refcount) > 0); ASSERT(atomic_read(&bip->bli_refcount) > 0);
bip->bli_flags |= XFS_BLI_HOLD; bip->bli_flags |= XFS_BLI_HOLD;
@ -539,7 +539,7 @@ xfs_trans_bhold_release(xfs_trans_t *tp,
ASSERT(bp->b_transp == tp); ASSERT(bp->b_transp == tp);
ASSERT(bip != NULL); ASSERT(bip != NULL);
ASSERT(!(bip->bli_flags & XFS_BLI_STALE)); ASSERT(!(bip->bli_flags & XFS_BLI_STALE));
ASSERT(!(bip->bli_format.blf_flags & XFS_BLF_CANCEL)); ASSERT(!(bip->__bli_format.blf_flags & XFS_BLF_CANCEL));
ASSERT(atomic_read(&bip->bli_refcount) > 0); ASSERT(atomic_read(&bip->bli_refcount) > 0);
ASSERT(bip->bli_flags & XFS_BLI_HOLD); ASSERT(bip->bli_flags & XFS_BLI_HOLD);
@ -598,7 +598,7 @@ xfs_trans_log_buf(xfs_trans_t *tp,
bip->bli_flags &= ~XFS_BLI_STALE; bip->bli_flags &= ~XFS_BLI_STALE;
ASSERT(XFS_BUF_ISSTALE(bp)); ASSERT(XFS_BUF_ISSTALE(bp));
XFS_BUF_UNSTALE(bp); XFS_BUF_UNSTALE(bp);
bip->bli_format.blf_flags &= ~XFS_BLF_CANCEL; bip->__bli_format.blf_flags &= ~XFS_BLF_CANCEL;
} }
tp->t_flags |= XFS_TRANS_DIRTY; tp->t_flags |= XFS_TRANS_DIRTY;
@ -643,6 +643,7 @@ xfs_trans_binval(
xfs_buf_t *bp) xfs_buf_t *bp)
{ {
xfs_buf_log_item_t *bip = bp->b_fspriv; xfs_buf_log_item_t *bip = bp->b_fspriv;
int i;
ASSERT(bp->b_transp == tp); ASSERT(bp->b_transp == tp);
ASSERT(bip != NULL); ASSERT(bip != NULL);
@ -657,8 +658,8 @@ xfs_trans_binval(
*/ */
ASSERT(XFS_BUF_ISSTALE(bp)); ASSERT(XFS_BUF_ISSTALE(bp));
ASSERT(!(bip->bli_flags & (XFS_BLI_LOGGED | XFS_BLI_DIRTY))); ASSERT(!(bip->bli_flags & (XFS_BLI_LOGGED | XFS_BLI_DIRTY)));
ASSERT(!(bip->bli_format.blf_flags & XFS_BLF_INODE_BUF)); ASSERT(!(bip->__bli_format.blf_flags & XFS_BLF_INODE_BUF));
ASSERT(bip->bli_format.blf_flags & XFS_BLF_CANCEL); ASSERT(bip->__bli_format.blf_flags & XFS_BLF_CANCEL);
ASSERT(bip->bli_item.li_desc->lid_flags & XFS_LID_DIRTY); ASSERT(bip->bli_item.li_desc->lid_flags & XFS_LID_DIRTY);
ASSERT(tp->t_flags & XFS_TRANS_DIRTY); ASSERT(tp->t_flags & XFS_TRANS_DIRTY);
return; return;
@ -668,10 +669,12 @@ xfs_trans_binval(
bip->bli_flags |= XFS_BLI_STALE; bip->bli_flags |= XFS_BLI_STALE;
bip->bli_flags &= ~(XFS_BLI_INODE_BUF | XFS_BLI_LOGGED | XFS_BLI_DIRTY); bip->bli_flags &= ~(XFS_BLI_INODE_BUF | XFS_BLI_LOGGED | XFS_BLI_DIRTY);
bip->bli_format.blf_flags &= ~XFS_BLF_INODE_BUF; bip->__bli_format.blf_flags &= ~XFS_BLF_INODE_BUF;
bip->bli_format.blf_flags |= XFS_BLF_CANCEL; bip->__bli_format.blf_flags |= XFS_BLF_CANCEL;
memset((char *)(bip->bli_format.blf_data_map), 0, for (i = 0; i < bip->bli_format_count; i++) {
(bip->bli_format.blf_map_size * sizeof(uint))); memset(bip->bli_formats[i].blf_data_map, 0,
(bip->bli_formats[i].blf_map_size * sizeof(uint)));
}
bip->bli_item.li_desc->lid_flags |= XFS_LID_DIRTY; bip->bli_item.li_desc->lid_flags |= XFS_LID_DIRTY;
tp->t_flags |= XFS_TRANS_DIRTY; tp->t_flags |= XFS_TRANS_DIRTY;
} }
@ -775,5 +778,5 @@ xfs_trans_dquot_buf(
type == XFS_BLF_GDQUOT_BUF); type == XFS_BLF_GDQUOT_BUF);
ASSERT(atomic_read(&bip->bli_refcount) > 0); ASSERT(atomic_read(&bip->bli_refcount) > 0);
bip->bli_format.blf_flags |= type; bip->__bli_format.blf_flags |= type;
} }