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Pull request from git://github.com/prasad-joshi/logfs_upstream.git

Browse source 
There are few important bug fixes for LogFS
 
 Shortlog:
 Joern Engel (5):
      logfs: Prevent memory corruption
      logfs: remove useless BUG_ON
      logfs: Free areas before calling generic_shutdown_super()
      logfs: Grow inode in delete path
      Logfs: Allow NULL block_isbad() methods
 
 Prasad Joshi (5):
      logfs: update page reference count for pined pages
      logfs: take write mutex lock during fsync and sync
      logfs: set superblock shutdown flag after generic sb shutdown
      logfs: Propagate page parameter to __logfs_write_inode
      MAINTAINERS: Add Prasad Joshi in LogFS maintiners
 
 Diffstat:
  MAINTAINERS          |    1 +
  fs/logfs/dev_mtd.c   |   26 +++++++++++-------------
  fs/logfs/dir.c       |    2 +-
  fs/logfs/file.c      |    2 +
  fs/logfs/gc.c        |    2 +-
  fs/logfs/inode.c     |    4 ++-
  fs/logfs/journal.c   |    1 -
  fs/logfs/logfs.h     |    5 +++-
  fs/logfs/readwrite.c |   51 +++++++++++++++++++++++++++++++++----------------
  fs/logfs/segment.c   |   51 ++++++++++++++++++++++++++++++++++++++-----------
  fs/logfs/super.c     |    3 +-
  11 files changed, 99 insertions(+), 49 deletions(-)
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Merge tag 'for-linus' of git://github.com/prasad-joshi/logfs_upstream

There are few important bug fixes for LogFS

* tag 'for-linus' of git://github.com/prasad-joshi/logfs_upstream:
  Logfs: Allow NULL block_isbad() methods
  logfs: Grow inode in delete path
  logfs: Free areas before calling generic_shutdown_super()
  logfs: remove useless BUG_ON
  MAINTAINERS: Add Prasad Joshi in LogFS maintiners
  logfs: Propagate page parameter to __logfs_write_inode
  logfs: set superblock shutdown flag after generic sb shutdown
  logfs: take write mutex lock during fsync and sync
  logfs: Prevent memory corruption
  logfs: update page reference count for pined pages

Fix up conflict in fs/logfs/dev_mtd.c due to semantic change in what
"mtd->block_isbad" means in commit f2933e86ad: "Logfs: Allow NULL
block_isbad() methods" clashing with the abstraction changes in the
commits 7086c19d07: "mtd: introduce mtd_block_isbad interface" and
d58b27ed58: "logfs: do not use 'mtd->block_isbad' directly".

This resolution takes the semantics from commit f2933e86ad, and just
makes mtd_block_isbad() return zero (false) if the 'block_isbad'
function is NULL.  But that also means that now "mtd_can_have_bb()"
always returns 0.

Now, "mtd_block_markbad()" will obviously return an error if the
low-level driver doesn't support bad blocks, so this is somewhat
non-symmetric, but it actually makes sense if a NULL "block_isbad"
function is considered to mean "I assume that all my blocks are always
good".
This commit is contained in:
Linus Torvalds 2012-01-31 09:23:59 -08:00
commit d3712b9dfc
11 changed files with 89 additions and 37 deletions
Download patch file Download diff file Expand all files Collapse all files

4
include/linux/mtd/mtd.h
View file

@ -441,7 +441,7 @@ static inline void mtd_resume(struct mtd_info *mtd)
static inline int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs)
{
if (!mtd->block_isbad)
return -EOPNOTSUPP;
return 0;
return mtd->block_isbad(mtd, ofs);
}
@ -489,7 +489,7 @@ static inline int mtd_has_oob(const struct mtd_info *mtd)
static inline int mtd_can_have_bb(const struct mtd_info *mtd)
{
return !!mtd->block_isbad;
return 0;
}
/* Kernel-side ioctl definitions */