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authorAl Viro <viro@zeniv.linux.org.uk>2012-03-30 14:04:16 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-03-31 16:03:16 -0400
commit3f6c7c71a2af6eb306e16562c6ee1bfdb48015fb (patch)
tree11a45a75c858894fcfdbf40e320d860d7f28c166 /fs/namei.c
parentcda309de253f338b04d15b4478e45fc3a0fcc7a3 (diff)
untangling do_lookup() - isolate !dentry stuff from the rest of it.
Duplicate the revalidation-related parts into if (!dentry) branch. Next step will be to pull them under i_mutex. This and the next 8 commits are more or less a splitup of patch by Miklos; folks, when you are working with something that convoluted, carve your patches up into easily reviewed steps, especially when a lot of codepaths involved are rarely hit... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/namei.c')
-rw-r--r--fs/namei.c17
1 files changed, 16 insertions, 1 deletions
diff --git a/fs/namei.c b/fs/namei.c
index 907e24785576..157f3debbf98 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1194,6 +1194,21 @@ retry:
1194 status = 1; 1194 status = 1;
1195 } 1195 }
1196 mutex_unlock(&dir->i_mutex); 1196 mutex_unlock(&dir->i_mutex);
1197 if (unlikely(dentry->d_flags & DCACHE_OP_REVALIDATE) && need_reval)
1198 status = d_revalidate(dentry, nd);
1199 if (unlikely(status <= 0)) {
1200 if (status < 0) {
1201 dput(dentry);
1202 return status;
1203 }
1204 if (!d_invalidate(dentry)) {
1205 dput(dentry);
1206 dentry = NULL;
1207 need_reval = 1;
1208 goto retry;
1209 }
1210 }
1211 goto done;
1197 } 1212 }
1198 if (unlikely(dentry->d_flags & DCACHE_OP_REVALIDATE) && need_reval) 1213 if (unlikely(dentry->d_flags & DCACHE_OP_REVALIDATE) && need_reval)
1199 status = d_revalidate(dentry, nd); 1214 status = d_revalidate(dentry, nd);
@@ -1209,7 +1224,7 @@ retry:
1209 goto retry; 1224 goto retry;
1210 } 1225 }
1211 } 1226 }
1212 1227done:
1213 path->mnt = mnt; 1228 path->mnt = mnt;
1214 path->dentry = dentry; 1229 path->dentry = dentry;
1215 err = follow_managed(path, nd->flags); 1230 err = follow_managed(path, nd->flags);