diff options
| author | Sage Weil <sage@newdream.net> | 2010-05-26 23:31:27 +0200 |
|---|---|---|
| committer | Sage Weil <sage@newdream.net> | 2010-08-02 05:11:39 +0200 |
| commit | 33caad324b88f75f42d836735d86feaafb3b40cf (patch) | |
| tree | 57e50ce5bdc181ea296191784c4d57999c51207e /fs/ceph/file.c | |
| parent | ceph: add LAZYIO ioctl to mark a file description for lazy consistency (diff) | |
| download | linux-33caad324b88f75f42d836735d86feaafb3b40cf.tar.xz linux-33caad324b88f75f42d836735d86feaafb3b40cf.zip | |
ceph: perform lazy writes when file mode and caps permit
If we have marked a file as "lazy" (using the ceph ioctl), perform buffered
writes when the MDS caps allow it.
Signed-off-by: Sage Weil <sage@newdream.net>
Diffstat (limited to '')
| -rw-r--r-- | fs/ceph/file.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/fs/ceph/file.c b/fs/ceph/file.c index 7c08698fad3e..85c86ed5f4c0 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -807,11 +807,12 @@ static ssize_t ceph_aio_write(struct kiocb *iocb, const struct iovec *iov, unsigned long nr_segs, loff_t pos) { struct file *file = iocb->ki_filp; + struct ceph_file_info *fi = file->private_data; struct inode *inode = file->f_dentry->d_inode; struct ceph_inode_info *ci = ceph_inode(inode); struct ceph_osd_client *osdc = &ceph_sb_to_client(inode->i_sb)->osdc; loff_t endoff = pos + iov->iov_len; - int got = 0; + int want, got = 0; int ret, err; if (ceph_snap(inode) != CEPH_NOSNAP) @@ -824,8 +825,11 @@ retry_snap: dout("aio_write %p %llx.%llx %llu~%u getting caps. i_size %llu\n", inode, ceph_vinop(inode), pos, (unsigned)iov->iov_len, inode->i_size); - ret = ceph_get_caps(ci, CEPH_CAP_FILE_WR, CEPH_CAP_FILE_BUFFER, - &got, endoff); + if (fi->fmode & CEPH_FILE_MODE_LAZY) + want = CEPH_CAP_FILE_BUFFER | CEPH_CAP_FILE_LAZYIO; + else + want = CEPH_CAP_FILE_BUFFER; + ret = ceph_get_caps(ci, CEPH_CAP_FILE_WR, want, &got, endoff); if (ret < 0) goto out; @@ -833,7 +837,7 @@ retry_snap: inode, ceph_vinop(inode), pos, (unsigned)iov->iov_len, ceph_cap_string(got)); - if ((got & CEPH_CAP_FILE_BUFFER) == 0 || + if ((got & (CEPH_CAP_FILE_BUFFER|CEPH_CAP_FILE_LAZYIO)) == 0 || (iocb->ki_filp->f_flags & O_DIRECT) || (inode->i_sb->s_flags & MS_SYNCHRONOUS)) { ret = ceph_sync_write(file, iov->iov_base, iov->iov_len, |