#4184 BLOC First D: JFFS2 Dirent Anomaly

[Zarro Boogs per Child]

#4184: JFFS2 Dirent Anomaly
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  Reporter:  wmb at firmworks.com  |       Owner:  krstic                
      Type:  defect             |      Status:  new                   
  Priority:  blocker            |   Milestone:  First Deployment, V1.0
 Component:  kernel             |     Version:                        
Resolution:                     |    Keywords:                        
  Verified:  0                  |  
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Comment(by gnu):

 Modprobe is opening the files read/write so it can use fcntl(, F_SETLKW)
 to avoid race conditions when two modprobes run simultaneously.  The
 --force options don't appear to need to open the file read/write; they
 modify its image in malloc'd or private mmap'd memory.  I wonder if
 something about the fcntl operation is giving the file system fits?

 I have a patch that replaces fcntl with flock(, LOCK_EX), which doesn't
 require that the file is open read/write, but I'm still testing it.

-- 
Ticket URL: <https://dev.laptop.org/ticket/4184#comment:23>
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