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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2013-03-20 13:23:33 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2013-03-21 10:31:21 -0400 |
| commit | 240286725d854331422cb15957f8d9bf2741d4e3 (patch) | |
| tree | 2b92c0f41ef7e303dd26f976a8afcdae467b08f0 /fs/nfs/pnfs.h | |
| parent | 24956804349ca0eadcdde032d65e8c00b4214096 (diff) | |
| download | linux-stable-240286725d854331422cb15957f8d9bf2741d4e3.tar.gz linux-stable-240286725d854331422cb15957f8d9bf2741d4e3.tar.bz2 linux-stable-240286725d854331422cb15957f8d9bf2741d4e3.zip | |
NFSv4.1: Add a helper pnfs_commit_and_return_layout
In order to be able to safely return the layout in nfs4_proc_setattr,
we need to block new uses of the layout, wait for all outstanding
users of the layout to complete, commit the layout and then return it.
This patch adds a helper in order to do all this safely.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: Boaz Harrosh <bharrosh@panasas.com>
Diffstat (limited to 'fs/nfs/pnfs.h')
| -rw-r--r-- | fs/nfs/pnfs.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index 94ba80417748..f5f8a470a647 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -219,6 +219,7 @@ void pnfs_set_layoutcommit(struct nfs_write_data *wdata); void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data); int pnfs_layoutcommit_inode(struct inode *inode, bool sync); int _pnfs_return_layout(struct inode *); +int pnfs_commit_and_return_layout(struct inode *); void pnfs_ld_write_done(struct nfs_write_data *); void pnfs_ld_read_done(struct nfs_read_data *); struct pnfs_layout_segment *pnfs_update_layout(struct inode *ino, @@ -407,6 +408,11 @@ static inline int pnfs_return_layout(struct inode *ino) return 0; } +static inline int pnfs_commit_and_return_layout(struct inode *inode) +{ + return 0; +} + static inline bool pnfs_ld_layoutret_on_setattr(struct inode *inode) { |