diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-03-30 14:34:00 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-03-31 16:03:16 -0400 |
| commit | d774a058d94d6b0dafada2295ec5221481b07d16 (patch) | |
| tree | 952afb38f52c989752812dc3c0970259293211a9 /fs | |
| parent | 08b0ab7c20f767187ae635d51bdd9d262ebe8357 (diff) | |
untangling do_lookup() - massage !dentry case towards __lookup_hash()
Reorder if-else cases for starters...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/namei.c | 45 |
1 files changed, 20 insertions, 25 deletions
diff --git a/fs/namei.c b/fs/namei.c index 14bb00a9fa9..5414438abff 100644 --- a/fs/namei.c +++ b/fs/namei.c | |||
| @@ -1174,39 +1174,34 @@ retry: | |||
| 1174 | 1174 | ||
| 1175 | mutex_lock(&dir->i_mutex); | 1175 | mutex_lock(&dir->i_mutex); |
| 1176 | dentry = d_lookup(parent, name); | 1176 | dentry = d_lookup(parent, name); |
| 1177 | if (likely(!dentry)) { | 1177 | if (dentry && d_need_lookup(dentry)) { |
| 1178 | dentry = d_alloc_and_lookup(parent, name, nd); | ||
| 1179 | if (IS_ERR(dentry)) { | ||
| 1180 | mutex_unlock(&dir->i_mutex); | ||
| 1181 | return PTR_ERR(dentry); | ||
| 1182 | } | ||
| 1183 | /* known good */ | ||
| 1184 | status = 1; | ||
| 1185 | } else if (unlikely(d_need_lookup(dentry))) { | ||
| 1186 | dentry = d_inode_lookup(parent, dentry, nd); | 1178 | dentry = d_inode_lookup(parent, dentry, nd); |
| 1187 | if (IS_ERR(dentry)) { | 1179 | if (IS_ERR(dentry)) { |
| 1188 | mutex_unlock(&dir->i_mutex); | 1180 | mutex_unlock(&dir->i_mutex); |
| 1189 | return PTR_ERR(dentry); | 1181 | return PTR_ERR(dentry); |
| 1190 | } | 1182 | } |
| 1191 | /* known good */ | 1183 | } else if (dentry && (dentry->d_flags & DCACHE_OP_REVALIDATE)) { |
| 1192 | status = 1; | ||
| 1193 | } else if (unlikely(dentry->d_flags & DCACHE_OP_REVALIDATE)) | ||
| 1194 | status = d_revalidate(dentry, nd); | 1184 | status = d_revalidate(dentry, nd); |
| 1195 | if (unlikely(status <= 0)) { | 1185 | if (unlikely(status <= 0)) { |
| 1196 | if (status < 0) { | 1186 | if (status < 0) { |
| 1197 | mutex_unlock(&dir->i_mutex); | ||
| 1198 | dput(dentry); | ||
| 1199 | return status; | ||
| 1200 | } | ||
| 1201 | if (!d_invalidate(dentry)) { | ||
| 1202 | dput(dentry); | ||
| 1203 | dentry = d_alloc_and_lookup(parent, name, nd); | ||
| 1204 | if (IS_ERR(dentry)) { | ||
| 1205 | mutex_unlock(&dir->i_mutex); | 1187 | mutex_unlock(&dir->i_mutex); |
| 1206 | return PTR_ERR(dentry); | 1188 | dput(dentry); |
| 1189 | return status; | ||
| 1207 | } | 1190 | } |
| 1208 | /* known good */ | 1191 | if (!d_invalidate(dentry)) { |
| 1209 | status = 1; | 1192 | dput(dentry); |
| 1193 | dentry = d_alloc_and_lookup(parent, name, nd); | ||
| 1194 | if (IS_ERR(dentry)) { | ||
| 1195 | mutex_unlock(&dir->i_mutex); | ||
| 1196 | return PTR_ERR(dentry); | ||
| 1197 | } | ||
| 1198 | } | ||
| 1199 | } | ||
| 1200 | } else if (!dentry) { | ||
| 1201 | dentry = d_alloc_and_lookup(parent, name, nd); | ||
| 1202 | if (IS_ERR(dentry)) { | ||
| 1203 | mutex_unlock(&dir->i_mutex); | ||
| 1204 | return PTR_ERR(dentry); | ||
| 1210 | } | 1205 | } |
| 1211 | } | 1206 | } |
| 1212 | mutex_unlock(&dir->i_mutex); | 1207 | mutex_unlock(&dir->i_mutex); |