kernel/git/stable/linux.git/fs/nfs/write.c, branch linux-3.5.y

nfs: tear down caches in nfs_init_writepagecache when allocation fails

2012-09-14T16:59:25+00:00

commit 3dd4765fce04c0b4af1e0bc4c0b10f906f95fabc upstream. ...and ensure that we tear down the nfs_commit_data cache too when unloading the module. Cc: Bryan Schumaker Signed-off-by: Jeff Layton Signed-off-by: Trond Myklebust Signed-off-by: Greg Kroah-Hartman

NFS: Fix a commit bug

2012-06-05T22:38:47+00:00

The new commit code fails to copy the verifier into the wb_verf field of _all_ the nfs_page structures; it only copies it into the first entry. The consequence is that most requests end up failing to match in nfs_commit_release. Fix is to copy the verifier into the req->wb_verf field in nfs_write_completion. Signed-off-by: Trond Myklebust Cc: Fred Isaman

NFSv4.1 set RPC_TASK_SOFTCONN for filelayout DS RPC calls

2012-05-19T21:54:19+00:00

RPC_TASK_SOFTCONN returns connection errors to the caller which allows the pNFS file layout to quickly try the MDS or perhaps another DS. Signed-off-by: Andy Adamson Signed-off-by: Trond Myklebust

NFS: Clean up - Rename nfs_unlock_request and nfs_unlock_request_dont_release

2012-05-09T19:17:43+00:00

Function rename to ensure that the functionality of nfs_unlock_request() mirrors that of nfs_lock_request(). Then let nfs_unlock_and_release_request() do the work of what used to be called nfs_unlock_request()... Signed-off-by: Trond Myklebust Cc: Fred Isaman

NFS: Clean up - simplify nfs_lock_request()

2012-05-09T19:17:34+00:00

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 Cc: Fred Isaman

NFS: nfs_set_page_writeback no longer needs to reference the page

2012-05-09T19:17:28+00:00

We now hold a reference to the nfs_page across the calls to nfs_set_page_writeback and nfs_end_page_writeback, and that means we already have a reference to the struct page. Signed-off-by: Trond Myklebust Cc: Fred Isaman

NFS: Prevent a deadlock in the new writeback code

2012-05-09T19:16:07+00:00

We have to unlock the nfs_page before we call nfs_end_page_writeback to avoid races with functions that expect the page to be unlocked when PG_locked and PG_writeback are not set. The problem is that nfs_unlock_request also releases the nfs_page, causing a deadlock if the release of the nfs_open_context triggers an iput() while the PG_writeback flag is still set... The solution is to separate the unlocking and release of the nfs_page, so that we can do the former before nfs_end_page_writeback and the latter after. Signed-off-by: Trond Myklebust Cc: Fred Isaman

NFS: Always trust the PageUptodate flag when we have a delegation

2012-05-01T19:42:41+00:00

We can always use the optimal full page write if we know that we hold a delegation. Signed-off-by: Trond Myklebust

NFS: Clean up nfs read and write error paths

2012-05-01T17:48:13+00:00

Move the error handling for nfs_generic_pagein() into a single function. Ditto for nfs_generic_flush(). Signed-off-by: Trond Myklebust Cc: Fred Isaman

NFS: Define dummy nfs_init_cinfo() and nfs_init_cinfo_from_inode()

2012-04-30T18:32:36+00:00

These are needed when v3 and v4 are not enabled. Signed-off-by: Bryan Schumaker Signed-off-by: Trond Myklebust