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author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-10 13:14:12 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-10 19:54:35 -0700 |
commit | 26fe575028703948880fce4355a210c76bb0536e (patch) | |
tree | 0a7d04289e1eb1f1739659ebc9498d40f2add5da /lib | |
parent | ee983e89670704b2a05e897b161f2674a42d1508 (diff) | |
download | op-kernel-dev-26fe575028703948880fce4355a210c76bb0536e.zip op-kernel-dev-26fe575028703948880fce4355a210c76bb0536e.tar.gz |
vfs: make it possible to access the dentry hash/len as one 64-bit entry
This allows comparing hash and len in one operation on 64-bit
architectures. Right now only __d_lookup_rcu() takes advantage of this,
since that is the case we care most about.
The use of anonymous struct/unions hides the alternate 64-bit approach
from most users, the exception being a few cases where we initialize a
'struct qstr' with a static initializer. This makes the problematic
cases use a new QSTR_INIT() helper function for that (but initializing
just the name pointer with a "{ .name = xyzzy }" initializer remains
valid, as does just copying another qstr structure).
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions