diff options
| author | Steve French <stfrench@microsoft.com> | 2019-08-30 09:12:41 +0200 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2019-09-16 18:43:38 +0200 |
| commit | 41e033fecdc891da629113c4f8ee80500b7656d6 (patch) | |
| tree | 4a5814b5751e18229462828564d644b9b724d5fc /fs/cifs/cifsglob.h | |
| parent | smb3: add some more descriptive messages about share when mounting cache=ro (diff) | |
| download | linux-41e033fecdc891da629113c4f8ee80500b7656d6.tar.xz linux-41e033fecdc891da629113c4f8ee80500b7656d6.zip | |
smb3: add mount option to allow RW caching of share accessed by only 1 client
If a share is known to be only to be accessed by one client, we
can aggressively cache writes not just reads to it.
Add "cache=" option (cache=singleclient) for mounting read write shares
(that will not be read or written to from other clients while we have
it mounted) in order to improve performance.
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs/cifsglob.h')
| -rw-r--r-- | fs/cifs/cifsglob.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 3f12da7f2f7f..fa5abe3a8514 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -560,6 +560,7 @@ struct smb_vol { bool direct_io:1; bool strict_io:1; /* strict cache behavior */ bool cache_ro:1; + bool cache_rw:1; bool remap:1; /* set to remap seven reserved chars in filenames */ bool sfu_remap:1; /* remap seven reserved chars ala SFU */ bool posix_paths:1; /* unset to not ask for posix pathnames. */ @@ -622,7 +623,7 @@ struct smb_vol { CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID | \ CIFS_MOUNT_UID_FROM_ACL | CIFS_MOUNT_NO_HANDLE_CACHE | \ CIFS_MOUNT_NO_DFS | CIFS_MOUNT_MODE_FROM_SID | \ - CIFS_MOUNT_RO_CACHE) + CIFS_MOUNT_RO_CACHE | CIFS_MOUNT_RW_CACHE) /** * Generic VFS superblock mount flags (s_flags) to consider when @@ -1370,7 +1371,7 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file); #define CIFS_CACHE_READ(cinode) ((cinode->oplock & CIFS_CACHE_READ_FLG) || (CIFS_SB(cinode->vfs_inode.i_sb)->mnt_cifs_flags & CIFS_MOUNT_RO_CACHE)) #define CIFS_CACHE_HANDLE(cinode) (cinode->oplock & CIFS_CACHE_HANDLE_FLG) -#define CIFS_CACHE_WRITE(cinode) (cinode->oplock & CIFS_CACHE_WRITE_FLG) +#define CIFS_CACHE_WRITE(cinode) ((cinode->oplock & CIFS_CACHE_WRITE_FLG) || (CIFS_SB(cinode->vfs_inode.i_sb)->mnt_cifs_flags & CIFS_MOUNT_RW_CACHE)) /* * One of these for each file inode |