diff options
| -rw-r--r-- | fs/ext4/extents.c | 69 |
1 files changed, 7 insertions, 62 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 82027841022..a0e62305595 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -2535,77 +2535,22 @@ void ext4_ext_release(struct super_block *sb) #endif } -static void bi_complete(struct bio *bio, int error) -{ - complete((struct completion *)bio->bi_private); -} - /* FIXME!! we need to try to merge to left or right after zero-out */ static int ext4_ext_zeroout(struct inode *inode, struct ext4_extent *ex) { + ext4_fsblk_t ee_pblock; + unsigned int ee_len; int ret; - struct bio *bio; - int blkbits, blocksize; - sector_t ee_pblock; - struct completion event; - unsigned int ee_len, len, done, offset; - - blkbits = inode->i_blkbits; - blocksize = inode->i_sb->s_blocksize; ee_len = ext4_ext_get_actual_len(ex); ee_pblock = ext_pblock(ex); - /* convert ee_pblock to 512 byte sectors */ - ee_pblock = ee_pblock << (blkbits - 9); - - while (ee_len > 0) { - - if (ee_len > BIO_MAX_PAGES) - len = BIO_MAX_PAGES; - else - len = ee_len; - - bio = bio_alloc(GFP_NOIO, len); - if (!bio) - return -ENOMEM; - - bio->bi_sector = ee_pblock; - bio->bi_bdev = inode->i_sb->s_bdev; - - done = 0; - offset = 0; - while (done < len) { - ret = bio_add_page(bio, ZERO_PAGE(0), - blocksize, offset); - if (ret != blocksize) { - /* - * We can't add any more pages because of - * hardware limitations. Start a new bio. - */ - break; - } - done++; - offset += blocksize; - if (offset >= PAGE_CACHE_SIZE) - offset = 0; - } - - init_completion(&event); - bio->bi_private = &event; - bio->bi_end_io = bi_complete; - submit_bio(WRITE, bio); - wait_for_completion(&event); + ret = sb_issue_zeroout(inode->i_sb, ee_pblock, ee_len, + GFP_NOFS, BLKDEV_IFL_WAIT); + if (ret > 0) + ret = 0; - if (!test_bit(BIO_UPTODATE, &bio->bi_flags)) { - bio_put(bio); - return -EIO; - } - bio_put(bio); - ee_len -= done; - ee_pblock += done << (blkbits - 9); - } - return 0; + return ret; } #define EXT4_EXT_ZERO_LEN 7 |