[PATCHSET v29.0 24/28] xfs: online repair of symbolic links

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Hi all,

The sole patch in this set adds the ability to repair the target buffer
of a symbolic link, using the same salvage, rebuild, and swap strategy
used everywhere else.

If you're going to start using this code, I strongly recommend pulling
from my git trees, which are linked below.

This has been running on the djcloud for months with no problems.  Enjoy!
Comments and questions are, as always, welcome.

--D

kernel git tree:
https://git.kernel.org/cgit/linux/kernel/git/djwong/xfs-linux.git/log/?h=repair-symlink

xfsprogs git tree:
https://git.kernel.org/cgit/linux/kernel/git/djwong/xfsprogs-dev.git/log/?h=repair-symlink
---
 fs/xfs/Makefile                    |    1 
 fs/xfs/libxfs/xfs_bmap.c           |   11 -
 fs/xfs/libxfs/xfs_bmap.h           |    6 
 fs/xfs/libxfs/xfs_symlink_remote.c |    9 -
 fs/xfs/libxfs/xfs_symlink_remote.h |   22 +-
 fs/xfs/scrub/repair.h              |    8 +
 fs/xfs/scrub/scrub.c               |    2 
 fs/xfs/scrub/symlink.c             |   13 +
 fs/xfs/scrub/symlink_repair.c      |  488 ++++++++++++++++++++++++++++++++++++
 fs/xfs/scrub/tempfile.c            |    5 
 fs/xfs/scrub/trace.h               |   46 +++
 11 files changed, 596 insertions(+), 15 deletions(-)
 create mode 100644 fs/xfs/scrub/symlink_repair.c





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