From 50db71abc529c48b21f4c3034d3cff27cfb25795 Mon Sep 17 00:00:00 2001 From: Dmitry Monakhov Date: Fri, 5 Dec 2014 21:37:15 -0500 Subject: [PATCH] ext4: ext4_da_convert_inline_data_to_extent drop locked page after error Testcase: xfstests generic/270 MKFS_OPTIONS="-q -I 256 -O inline_data,64bit" Call Trace: [] lock_page+0x35/0x39 -------> DEADLOCK [] pagecache_get_page+0x65/0x15a [] truncate_inode_pages_range+0x1db/0x45c [] ? ext4_da_get_block_prep+0x439/0x4b6 [] ? __block_write_begin+0x284/0x29c [] ? ext4_change_inode_journal_flag+0x16b/0x16b [] truncate_inode_pages+0x12/0x14 [] ext4_truncate_failed_write+0x19/0x25 [] ext4_da_write_inline_data_begin+0x196/0x31c [] ext4_da_write_begin+0x189/0x302 [] ? trace_hardirqs_on+0xd/0xf [] ? read_seqcount_begin.clone.1+0x9f/0xcc [] generic_perform_write+0xc7/0x1c6 [] ? mark_held_locks+0x59/0x77 [] __generic_file_write_iter+0x17f/0x1c5 [] ext4_file_write_iter+0x2a5/0x354 [] ? file_start_write+0x2a/0x2c [] ? bad_area_nosemaphore+0x13/0x15 [] new_sync_write+0x8a/0xb2 [] vfs_write+0xb5/0x14d [] SyS_write+0x5c/0x8c [] system_call_fastpath+0x12/0x17 Signed-off-by: Dmitry Monakhov Signed-off-by: Theodore Ts'o --- fs/ext4/inline.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c index b32d77bfb3a1..4b143febf21f 100644 --- a/fs/ext4/inline.c +++ b/fs/ext4/inline.c @@ -811,8 +811,11 @@ static int ext4_da_convert_inline_data_to_extent(struct address_space *mapping, ret = __block_write_begin(page, 0, inline_size, ext4_da_get_block_prep); if (ret) { + up_read(&EXT4_I(inode)->xattr_sem); + unlock_page(page); + page_cache_release(page); ext4_truncate_failed_write(inode); - goto out; + return ret; } SetPageDirty(page); -- 2.20.1