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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-10 13:14:12 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-10 19:54:35 -0700 |
| commit | 26fe575028703948880fce4355a210c76bb0536e (patch) | |
| tree | 0a7d04289e1eb1f1739659ebc9498d40f2add5da /fs/ext2 | |
| parent | ee983e89670704b2a05e897b161f2674a42d1508 (diff) | |
| download | lwn-26fe575028703948880fce4355a210c76bb0536e.tar.gz lwn-26fe575028703948880fce4355a210c76bb0536e.zip | |
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 'fs/ext2')
| -rw-r--r-- | fs/ext2/namei.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ext2/namei.c b/fs/ext2/namei.c index dffb86536285..f663a67d7bf0 100644 --- a/fs/ext2/namei.c +++ b/fs/ext2/namei.c @@ -79,7 +79,7 @@ static struct dentry *ext2_lookup(struct inode * dir, struct dentry *dentry, str struct dentry *ext2_get_parent(struct dentry *child) { - struct qstr dotdot = {.name = "..", .len = 2}; + struct qstr dotdot = QSTR_INIT("..", 2); unsigned long ino = ext2_inode_by_name(child->d_inode, &dotdot); if (!ino) return ERR_PTR(-ENOENT); |