linux.git/fs/coda, branch v5.3

coda: add hinting support for partial file caching

2019-07-17T02:23:23+00:00

This adds support for partial file caching in Coda.  Every read, write
and mmap informs the userspace cache manager about what part of a file
is about to be accessed so that the cache manager can ensure the
relevant parts are available before the operation is allowed to proceed.

When a read or write operation completes, this is also reported to allow
the cache manager to track when partially cached content can be
released.

If the cache manager does not support partial file caching, or when the
entire file has been fetched into the local cache, the cache manager may
return an EOPNOTSUPP error to indicate that intent upcalls are no longer
necessary until the file is closed.

[akpm@linux-foundation.org: little whitespace fixup]
Link: http://lkml.kernel.org/r/20190618181301.6960-1-jaharkes@cs.cmu.edu
Signed-off-by: Pedro Cuadra 
Signed-off-by: Jan Harkes 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

coda: ftoc validity check integration

2019-07-17T02:23:23+00:00

This patch moves cfi check in coda_ftoc() instead of repeating it in the
wild.

  Module size
     text	   data	    bss	    dec	    hex	filename
    28297	   1040	    700	  30037	   7555	fs/coda/coda.ko.before
    28263	    980	    700	  29943	   74f7	fs/coda/coda.ko.after

Link: http://lkml.kernel.org/r/a2c27663ec4547018c92d71c63b1dff4650b6546.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Fabian Frederick 
Signed-off-by: Jan Harkes 
Cc: Arnd Bergmann 
Cc: Colin Ian King 
Cc: Dan Carpenter 
Cc: David Howells 
Cc: Mikko Rapeli 
Cc: Sam Protsenko 
Cc: Yann Droneaud 
Cc: Zhouyang Jia 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

coda: remove sb test in coda_fid_to_inode()

2019-07-17T02:23:23+00:00

coda_fid_to_inode() is only called by coda_downcall() where sb is already
being tested.

Link: http://lkml.kernel.org/r/d2163b3136348faf83ba47dc2d65a5d0a9a135dd.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Fabian Frederick 
Signed-off-by: Jan Harkes 
Cc: Arnd Bergmann 
Cc: Colin Ian King 
Cc: Dan Carpenter 
Cc: David Howells 
Cc: Mikko Rapeli 
Cc: Sam Protsenko 
Cc: Yann Droneaud 
Cc: Zhouyang Jia 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

coda: remove sysctl object from module when unused

2019-07-17T02:23:23+00:00

Inspired by NFS sysctl process

Link: http://lkml.kernel.org/r/9afcc2cd09490849b309786bbf47fef75de7f91c.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Fabian Frederick 
Signed-off-by: Jan Harkes 
Cc: Arnd Bergmann 
Cc: Colin Ian King 
Cc: Dan Carpenter 
Cc: David Howells 
Cc: Mikko Rapeli 
Cc: Sam Protsenko 
Cc: Yann Droneaud 
Cc: Zhouyang Jia 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

coda: add __init to init_coda_psdev()

2019-07-17T02:23:23+00:00

init_coda_psdev() was only called by __init function.

Link: http://lkml.kernel.org/r/a12a5a135fa6b0ea997e1a0af4be0a235c463a24.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Fabian Frederick 
Signed-off-by: Jan Harkes 
Cc: Arnd Bergmann 
Cc: Colin Ian King 
Cc: Dan Carpenter 
Cc: David Howells 
Cc: Mikko Rapeli 
Cc: Sam Protsenko 
Cc: Yann Droneaud 
Cc: Zhouyang Jia 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

coda: use SIZE() for stat

2019-07-17T02:23:23+00:00

max_t expression was already defined in coda sources

Link: http://lkml.kernel.org/r/e6cda497ce8691db155cb35f8d13ea44ca6cedeb.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Fabian Frederick 
Signed-off-by: Jan Harkes 
Cc: Arnd Bergmann 
Cc: Colin Ian King 
Cc: Dan Carpenter 
Cc: David Howells 
Cc: Mikko Rapeli 
Cc: Sam Protsenko 
Cc: Yann Droneaud 
Cc: Zhouyang Jia 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

coda: destroy mutex in put_super()

2019-07-17T02:23:23+00:00

We can safely destroy vc_mutex at the end of umount process.

Link: http://lkml.kernel.org/r/f436f68908c467c5663bc6a9251b52cd7b95d2a5.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Fabian Frederick 
Signed-off-by: Jan Harkes 
Cc: Arnd Bergmann 
Cc: Colin Ian King 
Cc: Dan Carpenter 
Cc: David Howells 
Cc: Mikko Rapeli 
Cc: Sam Protsenko 
Cc: Yann Droneaud 
Cc: Zhouyang Jia 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

coda: remove uapi/linux/coda_psdev.h

2019-07-17T02:23:23+00:00

Nothing is left in this header that is used by userspace.

Link: http://lkml.kernel.org/r/bb11378cef94739f2cf89425dd6d302a52c64480.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Jan Harkes 
Cc: Arnd Bergmann 
Cc: Colin Ian King 
Cc: Dan Carpenter 
Cc: David Howells 
Cc: Fabian Frederick 
Cc: Mikko Rapeli 
Cc: Sam Protsenko 
Cc: Yann Droneaud 
Cc: Zhouyang Jia 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

coda: move internal defs out of include/linux/ [ver #2]

2019-07-17T02:23:23+00:00

Move include/linux/coda_psdev.h to fs/coda/ as there's nothing else that
uses it.

Link: http://lkml.kernel.org/r/3ceeee0415a929b89fb02700b6b4b3a07938acb8.1558117389.git.jaharkes@cs.cmu.edu
Link: https://patchwork.kernel.org/patch/10590257/
Signed-off-by: David Howells 
Signed-off-by: Jan Harkes 
Cc: Yann Droneaud 
Cc: Jan Harkes 
Cc: Arnd Bergmann 
Cc: Colin Ian King 
Cc: Dan Carpenter 
Cc: Fabian Frederick 
Cc: Mikko Rapeli 
Cc: Sam Protsenko 
Cc: Zhouyang Jia 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

coda: bump module version

2019-07-17T02:23:23+00:00

The out of tree module version had been bumped several times already,
but we haven't kept this in-tree one in sync, partly because most
changes go from here to the out-of-tree copy.

Link: http://lkml.kernel.org/r/8b0ab50a2da2f0180ac32c79d91811b4d1d0bd8b.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Jan Harkes 
Cc: Arnd Bergmann 
Cc: Colin Ian King 
Cc: Dan Carpenter 
Cc: David Howells 
Cc: Fabian Frederick 
Cc: Mikko Rapeli 
Cc: Sam Protsenko 
Cc: Yann Droneaud 
Cc: Zhouyang Jia 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds