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| author | J. Bruce Fields <bfields@citi.umich.edu> | 2008-02-11 21:48:47 +0100 |
|---|---|---|
| committer | J. Bruce Fields <bfields@citi.umich.edu> | 2008-04-23 22:13:38 +0200 |
| commit | c0ce6ec87c59d7a29438717b1f72f83fb408f416 (patch) | |
| tree | 197fe7b8f89250b54b3f08d559d49f331c00d759 | |
| parent | svcrpc: move unused field from cache_deferred_req (diff) | |
| download | linux-c0ce6ec87c59d7a29438717b1f72f83fb408f416.tar.xz linux-c0ce6ec87c59d7a29438717b1f72f83fb408f416.zip | |
nfsd: clarify readdir/mountpoint-crossing code
The code here is difficult to understand; attempt to clarify somewhat by
pulling out one of the more mystifying conditionals into a separate
function.
While we're here, also add lease_time to the list of attributes that we
don't really need to cross a mountpoint to fetch.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Cc: Peter Staubach <staubach@redhat.com>
| -rw-r--r-- | fs/nfsd/nfs4xdr.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 0e6a179eccaf..1ba7ad981935 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -1867,6 +1867,15 @@ out_serverfault: goto out; } +static inline int attributes_need_mount(u32 *bmval) +{ + if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) + return 1; + if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) + return 1; + return 0; +} + static __be32 nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, const char *name, int namlen, __be32 *p, int *buflen) @@ -1888,9 +1897,7 @@ nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, * we will not follow the cross mount and will fill the attribtutes * directly from the mountpoint dentry. */ - if (d_mountpoint(dentry) && - (cd->rd_bmval[0] & ~FATTR4_WORD0_RDATTR_ERROR) == 0 && - (cd->rd_bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) == 0) + if (d_mountpoint(dentry) && !attributes_need_mount(cd->rd_bmval)) ignore_crossmnt = 1; else if (d_mountpoint(dentry)) { int err; |