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

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: "Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>
Date: Sun, 04 Oct 2015 14:25:20 -0000
Reply-to: Bug 1247773 <1247773@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

pria, thank you for reporting this bug to Ubuntu. linux-lts-saucy reached EOL on August 2014.
See the following documents for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases
https://wiki.ubuntu.com/Kernel/LTSEnablementStack

If this is still reproducible in a supported release, please upgrade and then execute the following in a terminal:
apport-collect 1247773

Otherwise, please mark this as Invalid.

** Package changed: linux-lts-saucy (Ubuntu) => linux (Ubuntu)

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

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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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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