diff options
Diffstat (limited to 'fs/ext4/extents.c')
| -rw-r--r-- | fs/ext4/extents.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index ec5019fa552..03d1bbb78a2 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -1565,7 +1565,7 @@ static int ext4_ext_rm_idx(handle_t *handle, struct inode *inode, * This routine returns max. credits that the extent tree can consume. * It should be OK for low-performance paths like ->writepage() * To allow many writing processes to fit into a single transaction, - * the caller should calculate credits under truncate_mutex and + * the caller should calculate credits under i_data_sem and * pass the actual path. */ int ext4_ext_calc_credits_for_insert(struct inode *inode, @@ -2131,7 +2131,8 @@ out: /* * Need to be called with - * mutex_lock(&EXT4_I(inode)->truncate_mutex); + * down_read(&EXT4_I(inode)->i_data_sem) if not allocating file system block + * (ie, create is zero). Otherwise down_write(&EXT4_I(inode)->i_data_sem) */ int ext4_ext_get_blocks(handle_t *handle, struct inode *inode, ext4_lblk_t iblock, @@ -2350,7 +2351,7 @@ void ext4_ext_truncate(struct inode * inode, struct page *page) if (page) ext4_block_truncate_page(handle, page, mapping, inode->i_size); - mutex_lock(&EXT4_I(inode)->truncate_mutex); + down_write(&EXT4_I(inode)->i_data_sem); ext4_ext_invalidate_cache(inode); /* @@ -2386,7 +2387,7 @@ out_stop: if (inode->i_nlink) ext4_orphan_del(handle, inode); - mutex_unlock(&EXT4_I(inode)->truncate_mutex); + up_write(&EXT4_I(inode)->i_data_sem); ext4_journal_stop(handle); } @@ -2450,7 +2451,7 @@ long ext4_fallocate(struct inode *inode, int mode, loff_t offset, loff_t len) * modify 1 super block, 1 block bitmap and 1 group descriptor. */ credits = EXT4_DATA_TRANS_BLOCKS(inode->i_sb) + 3; - mutex_lock(&EXT4_I(inode)->truncate_mutex) + down_write((&EXT4_I(inode)->i_data_sem)); retry: while (ret >= 0 && ret < max_blocks) { block = block + ret; @@ -2507,7 +2508,7 @@ retry: if (ret == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries)) goto retry; - mutex_unlock(&EXT4_I(inode)->truncate_mutex) + up_write((&EXT4_I(inode)->i_data_sem)); /* * Time to update the file size. * Update only when preallocation was requested beyond the file size. |