Re: [patch] inotify for 2.6.11

[Erik Meitner]

Robert Love wrote:
> Below is inotify, diffed against 2.6.11.
> 
> I greatly reworked much of the data structures and their interactions,
> to lay the groundwork for sanitizing the locking.  I then, I hope,
> sanitized the locking.  It looks right, I am happy.  Comments welcome.
> I surely could of missed something.  Maybe even something big.
> 
> But, regardless, this release is a huge jump from the previous, fixing
> all known issues and greatly improving the locking.
> 

Inotify 0.22 severly destabilized my 2.6.11 system when it was in use.
The system would get into a state where it was unable to spawn new
processes, the desktop would hang, and the only way to shut down would
be to do a hard reset. This only happened when inotify was in use after
gamin started up.  I was only able to get the following out of the
logs(not every time though):

c017b901
Modules linked in: radeon deflate zlib_deflate twofish serpent aes_i586
blowfish sha256 sha1 crypto_null af_key parport_pc lp parport 8250_pci
8250 serial_core usbhid ohci_hcd ohci1394 ieee1394 yenta_socket
rsrc_nonstatic
suspend_text
CPU:    0
EIP:    0060:[inotify_ignore+49/224]    Not tainted VLI
EFLAGS: 00010246   (2.6.11.6-nx9005)
EIP is at inotify_ignore+0x31/0xe0
eax: 00000000   ebx: e88544e0   ecx: 00000000   edx: 00000000
esi: 00000000   edi: e88544e0   ebp: e8760000   esp: e8761f20
ds: 007b   es: 007b   ss: 0068
Process gam_server (pid: 6640, threadinfo=e8760000 task=ed19e060)
Stack: e88544e8 000000f6 e88544e0 fffffff2 fffffff7 c017bace e88544e0
000000f6
       00000004 000000f6 00000292 00000000 08098e54 80045102 fffffff7
c01685a8
       e5d584c0 80045102 08098e54 c0456118 00000000 e5d584c0 c0168785
e5d584c0
Call Trace:
 [inotify_ioctl+286/288] inotify_ioctl+0x11e/0x120
 [do_ioctl+104/128] do_ioctl+0x68/0x80
 [vfs_ioctl+101/464] vfs_ioctl+0x65/0x1d0
 [sys_ioctl+69/144] sys_ioctl+0x45/0x90
 [syscall_call+7/11] syscall_call+0x7/0xb
Code: 10 89 5c 24 08 89 74 24 0c 8b 7c 24 18 ff 4f 28 0f 88 95 03 00 00
8b 44 24 1c 89 44 24 04 8d 47 08 89 04 24 e8 11 89 0b 00 89 c6 <ff> 40
10 ff 47 28 0f 8e 81 03 00 00 85 f6 b8 ea ff ff ff 74 6e

Thanks.

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