diff options
| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-05-09 13:19:15 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-05-09 15:17:34 -0400 |
| commit | 7ad84aa9448571678c243f0c5ef383fbe5b50f4f (patch) | |
| tree | 7d2baea4ff52fe62b23bf8adbb81a824ee768938 /fs/nfs | |
| parent | d1182b33ed9b62470cb6ab892a8a301542120086 (diff) | |
NFS: Clean up - simplify nfs_lock_request()
We only have two places where we need to grab a reference when trying
to lock the nfs_page. We're better off making that explicit.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: Fred Isaman <iisaman@netapp.com>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/direct.c | 1 | ||||
| -rw-r--r-- | fs/nfs/write.c | 11 |
2 files changed, 7 insertions, 5 deletions
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 257d0091148b..465ea84a2874 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -657,6 +657,7 @@ static ssize_t nfs_direct_write_schedule_segment(struct nfs_pageio_descriptor *d break; } nfs_lock_request(req); + kref_get(&req->wb_kref); req->wb_index = pos >> PAGE_SHIFT; req->wb_offset = pos & ~PAGE_MASK; if (!nfs_pageio_add_request(desc, req)) { diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 83823294ffd2..553f7ef1079b 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -260,10 +260,10 @@ static struct nfs_page *nfs_find_and_lock_request(struct page *page, bool nonblo req = nfs_page_find_request_locked(page); if (req == NULL) break; - if (nfs_lock_request_dontget(req)) + if (nfs_lock_request(req)) break; /* Note: If we hold the page lock, as is the case in nfs_writepage, - * then the call to nfs_lock_request_dontget() will always + * then the call to nfs_lock_request() will always * succeed provided that someone hasn't already marked the * request as dirty (in which case we don't care). */ @@ -406,7 +406,7 @@ static void nfs_inode_add_request(struct inode *inode, struct nfs_page *req) struct nfs_inode *nfsi = NFS_I(inode); /* Lock the request! */ - nfs_lock_request_dontget(req); + nfs_lock_request(req); spin_lock(&inode->i_lock); if (!nfsi->npages && nfs_have_delegation(inode, FMODE_WRITE)) @@ -651,6 +651,7 @@ nfs_scan_commit_list(struct list_head *src, struct list_head *dst, list_for_each_entry_safe(req, tmp, src, wb_list) { if (!nfs_lock_request(req)) continue; + kref_get(&req->wb_kref); if (cond_resched_lock(cinfo->lock)) list_safe_reset_next(req, tmp, wb_list); nfs_request_remove_commit_list(req, cinfo); @@ -741,7 +742,7 @@ static struct nfs_page *nfs_try_to_update_request(struct inode *inode, || end < req->wb_offset) goto out_flushme; - if (nfs_lock_request_dontget(req)) + if (nfs_lock_request(req)) break; /* The request is locked, so wait and then retry */ @@ -1717,7 +1718,7 @@ int nfs_wb_page_cancel(struct inode *inode, struct page *page) req = nfs_page_find_request(page); if (req == NULL) break; - if (nfs_lock_request_dontget(req)) { + if (nfs_lock_request(req)) { nfs_clear_request_commit(req); nfs_inode_remove_request(req); /* |