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| author |   Andreas Dilger <adilger@dilger.ca> | 2019-02-14 17:52:18 -0500 |
|---|---|---|
| committer |   Theodore Ts'o <tytso@mit.edu> | 2019-02-14 17:52:18 -0500 |
| commit | c9e716eb9b3455a83ed7c5f5a81256a3da779a95 (patch) | |
| tree | 77d6ae90a17991f610b74d6a45b5557950c6a1f4 /tools/perf/scripts/python/stackcollapse.py | |
| parent | jbd2: fold jbd2_superblock_csum_{verify,set} into their callers (diff) | |
| download | wireguard-linux-c9e716eb9b3455a83ed7c5f5a81256a3da779a95.tar.xz wireguard-linux-c9e716eb9b3455a83ed7c5f5a81256a3da779a95.zip | |
ext4: don't update s_rev_level if not required
Don't update the superblock s_rev_level during mount if it isn't
actually necessary, only if superblock features are being set by
the kernel. This was originally added for ext3 since it always
set the INCOMPAT_RECOVER and HAS_JOURNAL features during mount,
but this is not needed since no journal mode was added to ext4.
That will allow Geert to mount his 20-year-old ext2 rev 0.0 m68k
filesystem, as a testament of the backward compatibility of ext4.
Fixes: 0390131ba84f ("ext4: Allow ext4 to run without a journal")
Signed-off-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions