Signed-off-by: Dmitry Monakhov <dmonakhov@xxxxxxxxxx>
---
fs/ext4/extents.c | 70 +++-------------------------------------------------
1 files changed, 4 insertions(+), 66 deletions(-)
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 765a482..ff4473a 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -2432,76 +2432,14 @@ 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)
{
- int ret = -EIO;
- 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);
+ sector_t nr_sects = ((sector_t)ext4_ext_get_actual_len(ex)) <<
+ inode->i_blkbits;
- /* 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);
- 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);
-
- if (test_bit(BIO_UPTODATE, &bio->bi_flags))
- ret = 0;
- else {
- ret = -EIO;
- break;
- }
- bio_put(bio);
- ee_len -= done;
- ee_pblock += done << (blkbits - 9);
- }
- return ret;
+ return blkdev_issue_zeroout(inode->i_sb->s_bdev, ext_pblock(ex),
+ nr_sects, UINT_MAX >> 9, GFP_NOIO, WRITE);
}
#define EXT4_EXT_ZERO_LEN 7
--
1.6.6
--
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