Added people who know nfs code.
On Wed, Nov 16, 2016 at 6:21 PM, jin deng <cheneydeng88@xxxxxxxxx> wrote:
Hi all,I'm reading the code of 3.6.9 version and got a question.And I'm not very familiar with the code,so I have to confirm it(I checked the master branch,it's same with 3.6.9).The question is about the 'lookup' operation of NFS.And i'm with this code flow:nfs3_lookup (nfs3.c) ==> nfs3_fh_resolve_and_resume ==> nfs3_fh_resolve_root ==> nfs3_fh_resolve_resume ==> nfs3_fh_resolve_entry ==> nfs3_fh_resolve_entry_hard. Now enter the "nfs_entry_loc_fill" and return with -1 which means the "parent" not found,so we have to do hard resolve about the parent. After doing a hard resolve,we get into the callback "nfs3_fh_resolve_inode_lookup_cbk".And the callback has the following code: >>> memcpy (&cs->stbuf, buf, sizeof(*buf));>>> memcpy (&cs->postparent, buf, sizeof(*postparent))I think we've just done a parent resolve,how could we assign the parent result into the "stbuf" and "postparent".The later two should be the information of the child file/directory.Do i made a misunderstand?Thanks advance for your help.
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Pranith
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