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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2008-06-13 13:25:22 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2008-07-09 12:09:24 -0400 |
| commit | e468bae97d243fe0e1515abaa1f7d0edf1476ad0 (patch) | |
| tree | 42bbbfe8d6dfc60bcaaaa1a7164ba75dc1060050 /include/linux/nfs_page.h | |
| parent | e7d39069e387a12d4c57f4067d9f48c1d29ea900 (diff) | |
| download | lwn-e468bae97d243fe0e1515abaa1f7d0edf1476ad0.tar.gz lwn-e468bae97d243fe0e1515abaa1f7d0edf1476ad0.zip | |
NFS: Allow redirtying of a completed unstable write.
Currently, if an unstable write completes, we cannot redirty the page in
order to reflect a new change in the page data until after we've sent a
COMMIT request.
This patch allows a page rewrite to proceed without the unnecessary COMMIT
step, putting it immediately back onto the dirty page list, undoing the
VM unstable write accounting, and removing the NFS_PAGE_TAG_COMMIT tag from
the NFS radix tree.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'include/linux/nfs_page.h')
| -rw-r--r-- | include/linux/nfs_page.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h index a1676e19e491..3c60685d972b 100644 --- a/include/linux/nfs_page.h +++ b/include/linux/nfs_page.h @@ -27,9 +27,12 @@ /* * Valid flags for a dirty buffer */ -#define PG_BUSY 0 -#define PG_NEED_COMMIT 1 -#define PG_NEED_RESCHED 2 +enum { + PG_BUSY = 0, + PG_CLEAN, + PG_NEED_COMMIT, + PG_NEED_RESCHED, +}; struct nfs_inode; struct nfs_page { |