So please give me couple of hours and I'll send you a complete patch. > Please give a try to this patch > diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c > index 1530cf4..e8460f6 100644 > --- a/fs/ext4/extents.c > +++ b/fs/ext4/extents.c > @@ -3272,7 +3272,7 @@ static int ext4_ext_convert_to_initialized(handle_t *handle, > if (err) > goto out; > zero_ex.ee_block = ex->ee_block; > - zero_ex.ee_len = ext4_ext_get_actual_len(ex); > + zero_ex.ee_len = cpu_to_le16(ext4_ext_get_actual_len(ext)); > ext4_ext_store_pblock(&zero_ex, ext4_ext_pblock(ex)); > > err = ext4_ext_get_access(handle, inode, path + depth); > > > > > I've applied (only) 0001-enable-ES_AGGRESSIVE_TEST-V2.patch to 3.9-rc4: > > > > patching file fs/ext4/extents_status.h > > patching file fs/ext4/inode.c > > Hunk #1 succeeded at 1588 (offset 42 lines). > > Hunk #2 succeeded at 1609 (offset 42 lines). > > > > And tried to download some images via bittorrent. As expected, lots of > > "ES cache assertation failed" were being logged: > > > > http://nerdbynature.de/bits/3.9.0-rc4/ext4/ > > => messages_0001-enable-ES_AGGRESSIVE_TEST-V2.txt.xz > > > > I've tried to download 3 files, all via bittorrent (so, fallocate & heavy > > mmap) > > > > 1) 8GB Fedora iso, there are also WARNINGs bring triggered, see below. > > I decided to cancel the download after some gigabyes. > > > > 2) A 50 MB Debian iso, this produced just one "ES cache assertation" > > message. Download went OK, checksum was correct too. > > > > 3) A 221 MB Fedora iso, produced a couple of "ES cache assertation" > > messages, but no WARNINGs. Download went OK, checksum was correct too. > > > > It's all in that messages_0001-enable-ES_AGGRESSIVE_TEST-V2.txt.xz file > > above. I just e2fsck'ed the ext4 filesystem again (and did so last night), > > but no errors were found. > > > > HTH, > > Christian. > > > > One of the WARNINGs during that 8GB download: > > > > ino:39190654 lbkl:0, b_state=0x0004b988, b_size=4131 > > ------------[ cut here ]------------ > > WARNING: at /opt/linux-git/fs/ext4/inode.c:1600 > > Modules linked in: md5 ecb nfs i2c_powermac therm_adt746x ecryptfs firewire_sbp2 arc4 b43 usb_storage mac80211 cfg80211 > > NIP: c013745c LR: c013745c CTR: c000df9c > > REGS: edc479a0 TRAP: 0700 Tainted: G W (3.9.0-rc4-dirty) > > MSR: 00029032 CR: 44028644 XER: 20000000 > > TASK = edca9740[4379] 'flush-254:1' THREAD: edc46000 > > GPR00: c013745c edc47a50 edca9740 00000034 edca9db0 00000006 00000000 00008000 > > GPR08: 00003fb0 00218f23 00000000 c000006e 00000dc9 00000000 00000009 ee18cca0 > > GPR16: edc47c78 0000000e 0004b9bf 0004b988 00000000 edc47a84 00001000 e6357540 > > GPR24: edc47b78 e6357540 00000000 0004b97f 00000000 0051d188 00000000 0004b988 > > NIP [c013745c] mpage_da_submit_io+0x3dc/0x3f0 > > LR [c013745c] mpage_da_submit_io+0x3dc/0x3f0 > > Call Trace: > > [edc47a50] [c013745c] mpage_da_submit_io+0x3dc/0x3f0 (unreliable) > > [edc47b30] [c013c9f0] mpage_da_map_and_submit+0x16c/0x5f0 > > [edc47bc0] [c013d2e4] write_cache_pages_da+0x470/0x480 > > [edc47c70] [c013d554] ext4_da_writepages+0x260/0x49c > > [edc47d20] [c00eeea0] __writeback_single_inode+0x34/0x120 > > [edc47d40] [c00ef508] writeback_sb_inodes+0x1fc/0x34c > > [edc47db0] [c00ef6e4] __writeback_inodes_wb+0x8c/0xd0 > > [edc47de0] [c00efa90] wb_writeback+0x1b4/0x1bc > > [edc47e20] [c00f06d0] wb_do_writeback+0x1ec/0x1f4 > > [edc47e80] [c00f0748] bdi_writeback_thread+0x70/0x140 > > [edc47eb0] [c0051c18] kthread+0xa8/0xac > > [edc47f40] [c00106cc] ret_from_kernel_thread+0x64/0x6c > > --- Exception: 0 at (null) > > LR = (null) > > Instruction dump: > > > > -- > > BOFH excuse #61: > > > > not approved by the FCC