diff options
Diffstat (limited to 'fs/ceph/addr.c')
| -rw-r--r-- | fs/ceph/addr.c | 31 |
1 files changed, 18 insertions, 13 deletions
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index dbb5f7d69216..7d69f25d0c90 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -474,7 +474,9 @@ out: * only snap context we are allowed to write back. */ static struct ceph_snap_context *get_oldest_context(struct inode *inode, - loff_t *snap_size) + loff_t *snap_size, + u64 *truncate_size, + u32 *truncate_seq) { struct ceph_inode_info *ci = ceph_inode(inode); struct ceph_snap_context *snapc = NULL; @@ -488,6 +490,10 @@ static struct ceph_snap_context *get_oldest_context(struct inode *inode, snapc = ceph_get_snap_context(capsnap->context); if (snap_size) *snap_size = capsnap->size; + if (truncate_size) + *truncate_size = capsnap->truncate_size; + if (truncate_seq) + *truncate_seq = capsnap->truncate_seq; break; } } @@ -495,6 +501,10 @@ static struct ceph_snap_context *get_oldest_context(struct inode *inode, snapc = ceph_get_snap_context(ci->i_head_snapc); dout(" head snapc %p has %d dirty pages\n", snapc, ci->i_wrbuffer_ref_head); + if (truncate_size) + *truncate_size = capsnap->truncate_size; + if (truncate_seq) + *truncate_seq = capsnap->truncate_seq; } spin_unlock(&ci->i_ceph_lock); return snapc; @@ -537,7 +547,8 @@ static int writepage_nounlock(struct page *page, struct writeback_control *wbc) dout("writepage %p page %p not dirty?\n", inode, page); goto out; } - oldest = get_oldest_context(inode, &snap_size); + oldest = get_oldest_context(inode, &snap_size, + &truncate_size, &truncate_seq); if (snapc->seq > oldest->seq) { dout("writepage %p page %p snapc %p not writeable - noop\n", inode, page, snapc); @@ -548,12 +559,8 @@ static int writepage_nounlock(struct page *page, struct writeback_control *wbc) } ceph_put_snap_context(oldest); - spin_lock(&ci->i_ceph_lock); - truncate_seq = ci->i_truncate_seq; - truncate_size = ci->i_truncate_size; if (snap_size == -1) snap_size = i_size_read(inode); - spin_unlock(&ci->i_ceph_lock); /* is this a partial page at end of file? */ if (page_off >= snap_size) { @@ -800,7 +807,8 @@ retry: /* find oldest snap context with dirty data */ ceph_put_snap_context(snapc); snap_size = -1; - snapc = get_oldest_context(inode, &snap_size); + snapc = get_oldest_context(inode, &snap_size, + &truncate_size, &truncate_seq); if (!snapc) { /* hmm, why does writepages get called when there is no dirty data? */ @@ -810,11 +818,7 @@ retry: dout(" oldest snapc is %p seq %lld (%d snaps)\n", snapc, snapc->seq, snapc->num_snaps); - spin_lock(&ci->i_ceph_lock); - truncate_seq = ci->i_truncate_seq; - truncate_size = ci->i_truncate_size; i_size = i_size_read(inode); - spin_unlock(&ci->i_ceph_lock); if (last_snapc && snapc != last_snapc) { /* if we switched to a newer snapc, restart our scan at the @@ -1160,7 +1164,8 @@ out: static int context_is_writeable_or_written(struct inode *inode, struct ceph_snap_context *snapc) { - struct ceph_snap_context *oldest = get_oldest_context(inode, NULL); + struct ceph_snap_context *oldest = get_oldest_context(inode, NULL, + NULL, NULL); int ret = !oldest || snapc->seq <= oldest->seq; ceph_put_snap_context(oldest); @@ -1205,7 +1210,7 @@ retry_locked: * this page is already dirty in another (older) snap * context! is it writeable now? */ - oldest = get_oldest_context(inode, NULL); + oldest = get_oldest_context(inode, NULL, NULL, NULL); if (snapc->seq > oldest->seq) { ceph_put_snap_context(oldest); |