aboutsummaryrefslogtreecommitdiffstats
path: root/fs/nilfs2/dat.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/nilfs2/dat.c')
-rw-r--r--fs/nilfs2/dat.c21
1 files changed, 11 insertions, 10 deletions
diff --git a/fs/nilfs2/dat.c b/fs/nilfs2/dat.c
index 1827f62c772d..0b2710e2d565 100644
--- a/fs/nilfs2/dat.c
+++ b/fs/nilfs2/dat.c
@@ -376,36 +376,37 @@ int nilfs_dat_translate(struct inode *dat, __u64 vblocknr, sector_t *blocknrp)
376 return ret; 376 return ret;
377} 377}
378 378
379ssize_t nilfs_dat_get_vinfo(struct inode *dat, struct nilfs_vinfo *vinfo, 379ssize_t nilfs_dat_get_vinfo(struct inode *dat, void *buf, unsigned visz,
380 size_t nvi) 380 size_t nvi)
381{ 381{
382 struct buffer_head *entry_bh; 382 struct buffer_head *entry_bh;
383 struct nilfs_dat_entry *entry; 383 struct nilfs_dat_entry *entry;
384 struct nilfs_vinfo *vinfo = buf;
384 __u64 first, last; 385 __u64 first, last;
385 void *kaddr; 386 void *kaddr;
386 unsigned long entries_per_block = NILFS_MDT(dat)->mi_entries_per_block; 387 unsigned long entries_per_block = NILFS_MDT(dat)->mi_entries_per_block;
387 int i, j, n, ret; 388 int i, j, n, ret;
388 389
389 for (i = 0; i < nvi; i += n) { 390 for (i = 0; i < nvi; i += n) {
390 ret = nilfs_palloc_get_entry_block(dat, vinfo[i].vi_vblocknr, 391 ret = nilfs_palloc_get_entry_block(dat, vinfo->vi_vblocknr,
391 0, &entry_bh); 392 0, &entry_bh);
392 if (ret < 0) 393 if (ret < 0)
393 return ret; 394 return ret;
394 kaddr = kmap_atomic(entry_bh->b_page, KM_USER0); 395 kaddr = kmap_atomic(entry_bh->b_page, KM_USER0);
395 /* last virtual block number in this block */ 396 /* last virtual block number in this block */
396 first = vinfo[i].vi_vblocknr; 397 first = vinfo->vi_vblocknr;
397 do_div(first, entries_per_block); 398 do_div(first, entries_per_block);
398 first *= entries_per_block; 399 first *= entries_per_block;
399 last = first + entries_per_block - 1; 400 last = first + entries_per_block - 1;
400 for (j = i, n = 0; 401 for (j = i, n = 0;
401 j < nvi && vinfo[j].vi_vblocknr >= first && 402 j < nvi && vinfo->vi_vblocknr >= first &&
402 vinfo[j].vi_vblocknr <= last; 403 vinfo->vi_vblocknr <= last;
403 j++, n++) { 404 j++, n++, vinfo = (void *)vinfo + visz) {
404 entry = nilfs_palloc_block_get_entry( 405 entry = nilfs_palloc_block_get_entry(
405 dat, vinfo[j].vi_vblocknr, entry_bh, kaddr); 406 dat, vinfo->vi_vblocknr, entry_bh, kaddr);
406 vinfo[j].vi_start = le64_to_cpu(entry->de_start); 407 vinfo->vi_start = le64_to_cpu(entry->de_start);
407 vinfo[j].vi_end = le64_to_cpu(entry->de_end); 408 vinfo->vi_end = le64_to_cpu(entry->de_end);
408 vinfo[j].vi_blocknr = le64_to_cpu(entry->de_blocknr); 409 vinfo->vi_blocknr = le64_to_cpu(entry->de_blocknr);
409 } 410 }
410 kunmap_atomic(kaddr, KM_USER0); 411 kunmap_atomic(kaddr, KM_USER0);
411 brelse(entry_bh); 412 brelse(entry_bh);