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NFS: Save struct inode * inside nfs_commit_info to clarify usage of i_lock

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Commit ea2cf22 created nfs_commit_info and saved &inode->i_lock inside
this NFS specific structure.  This obscures the usage of i_lock.
Instead, save struct inode * so later it's clear the spinlock taken is
i_lock.

Should be no functional change.

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Dave Wysochanski 2016-04-01 13:45:09 -04:00 • committed by Anna Schumaker
parent ed3743a6d4
commit fe238e601d
6 changed files with 34 additions and 34 deletions
Download patch file Download diff file Expand all files Collapse all files

16
fs/nfs/write.c
View file

@ -804,7 +804,7 @@ nfs_page_search_commits_for_head_request_locked(struct nfs_inode *nfsi,
* number of outstanding requests requiring a commit as well as
* the MM page stats.
*
* The caller must hold the cinfo->lock, and the nfs_page lock.
* The caller must hold cinfo->inode->i_lock, and the nfs_page lock.
*/
void
nfs_request_add_commit_list_locked(struct nfs_page *req, struct list_head *dst,
@ -832,9 +832,9 @@ EXPORT_SYMBOL_GPL(nfs_request_add_commit_list_locked);
void
nfs_request_add_commit_list(struct nfs_page *req, struct nfs_commit_info *cinfo)
{
spin_lock(cinfo->lock);
spin_lock(&cinfo->inode->i_lock);
nfs_request_add_commit_list_locked(req, &cinfo->mds->list, cinfo);
spin_unlock(cinfo->lock);
spin_unlock(&cinfo->inode->i_lock);
nfs_mark_page_unstable(req->wb_page, cinfo);
}
EXPORT_SYMBOL_GPL(nfs_request_add_commit_list);
@ -864,7 +864,7 @@ EXPORT_SYMBOL_GPL(nfs_request_remove_commit_list);
static void nfs_init_cinfo_from_inode(struct nfs_commit_info *cinfo,
struct inode *inode)
{
cinfo->lock = &inode->i_lock;
cinfo->inode = inode;
cinfo->mds = &NFS_I(inode)->commit_info;
cinfo->ds = pnfs_get_ds_info(inode);
cinfo->dreq = NULL;
@ -967,7 +967,7 @@ nfs_reqs_to_commit(struct nfs_commit_info *cinfo)
return cinfo->mds->ncommit;
}
/* cinfo->lock held by caller */
/* cinfo->inode->i_lock held by caller */
int
nfs_scan_commit_list(struct list_head *src, struct list_head *dst,
struct nfs_commit_info *cinfo, int max)
@ -979,7 +979,7 @@ nfs_scan_commit_list(struct list_head *src, struct list_head *dst,
if (!nfs_lock_request(req))
continue;
kref_get(&req->wb_kref);
if (cond_resched_lock(cinfo->lock))
if (cond_resched_lock(&cinfo->inode->i_lock))
list_safe_reset_next(req, tmp, wb_list);
nfs_request_remove_commit_list(req, cinfo);
nfs_list_add_request(req, dst);
@ -1005,7 +1005,7 @@ nfs_scan_commit(struct inode *inode, struct list_head *dst,
{
int ret = 0;
spin_lock(cinfo->lock);
spin_lock(&cinfo->inode->i_lock);
if (cinfo->mds->ncommit > 0) {
const int max = INT_MAX;
@ -1013,7 +1013,7 @@ nfs_scan_commit(struct inode *inode, struct list_head *dst,
cinfo, max);
ret += pnfs_scan_commit_lists(inode, cinfo, max - ret);
}
spin_unlock(cinfo->lock);
spin_unlock(&cinfo->inode->i_lock);
return ret;
}