diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2011-03-16 05:44:14 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2011-03-16 16:44:24 -0400 |
| commit | b1942c5f8cf3bea3a3c88a7498ae4c4361f31afe (patch) | |
| tree | 0ff98cbdf75b23104df97344dcd6a35a86bbe9ec /fs/nfs/dir.c | |
| parent | 0d5839ad05acd0fe2a84a39f33ac5efdf634a5a5 (diff) | |
nfs: store devname at disconnected NFS roots
part 2: make sure that disconnected roots have corresponding mnt_devname
values stashed into them.
Have nfs*_get_root() stuff a copy of devname into ->d_fsdata of the
found root, provided that it is disconnected.
Have ->d_release() free it when dentry goes away.
Have the places where NFS uses ->d_fsdata for sillyrename (and that
can *never* happen to a disconnected root - dentry will be attached
to its parent) free old devname copies if they find those.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/nfs/dir.c')
| -rw-r--r-- | fs/nfs/dir.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 2c3eb33b904..abdf38d5971 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1169,11 +1169,23 @@ static void nfs_dentry_iput(struct dentry *dentry, struct inode *inode) iput(inode); } +static void nfs_d_release(struct dentry *dentry) +{ + /* free cached devname value, if it survived that far */ + if (unlikely(dentry->d_fsdata)) { + if (dentry->d_flags & DCACHE_NFSFS_RENAMED) + WARN_ON(1); + else + kfree(dentry->d_fsdata); + } +} + const struct dentry_operations nfs_dentry_operations = { .d_revalidate = nfs_lookup_revalidate, .d_delete = nfs_dentry_delete, .d_iput = nfs_dentry_iput, .d_automount = nfs_d_automount, + .d_release = nfs_d_release, }; static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, struct nameidata *nd) @@ -1248,6 +1260,7 @@ const struct dentry_operations nfs4_dentry_operations = { .d_delete = nfs_dentry_delete, .d_iput = nfs_dentry_iput, .d_automount = nfs_d_automount, + .d_release = nfs_d_release, }; /* |