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[Bug 1247773] Re: Fanotify blocks any write operation to CIFS mounted volumes for about 10-15 secs

 

Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.12 kernel[0].

If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag:
'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".


Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-saucy/


** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1247773

Title:
  Fanotify blocks any write operation to CIFS mounted volumes for about
  10-15 secs

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Whenever we use Fanotify to monitor "CIFS" mounted volumes and
  try to write to a new file by doing:

  echo "ABC" > /mnt/cifs/test.c

  It takes around 10-15 secs to complete the write operation.

  This happens only when we try to monitor "FAN_OPEN_PERM". Looks like
  "FAN_OPEN_PERM" blocks and notifies only after 10-15 secs.

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