ext4: Update i_disksize properly when allocating from fallocate area. From: "Aneesh Kumar K.V" When allocating unitialized space at the end of file which had been preallocated with the FALLOC_FL_KEEP_SIZE option, the file size is not updated at that time. But the later we are not updating the file size when writing to that preallocated space. These changes are for code correctness. This patch allows us to update the i_disksize at the write_end() callback of filesystem properly. Signed-off-by: Aneesh Kumar K.V Signed-off-by: Mingming Cao Signed-off-by: "Theodore Ts'o" --- fs/ext4/extents.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) Index: linux-2.6.26-rc9/fs/ext4/extents.c =================================================================== --- linux-2.6.26-rc9.orig/fs/ext4/extents.c 2008-07-11 16:04:30.000000000 -0700 +++ linux-2.6.26-rc9/fs/ext4/extents.c 2008-07-11 16:05:02.000000000 -0700 @@ -2716,13 +2716,13 @@ int ext4_ext_get_blocks(handle_t *handle goto out2; } - if (extend_disksize && inode->i_size > EXT4_I(inode)->i_disksize) - EXT4_I(inode)->i_disksize = inode->i_size; - /* previous routine could use block we allocated */ newblock = ext_pblock(&newex); allocated = ext4_ext_get_actual_len(&newex); outnew: + if (extend_disksize && inode->i_size > EXT4_I(inode)->i_disksize) + EXT4_I(inode)->i_disksize = inode->i_size; + __set_bit(BH_New, &bh_result->b_state); /* Cache only when it is _not_ an uninitialized extent */