From: Xiubo Li <xiubli@xxxxxxxxxx> If the Fb cap is used it means the client is flushing the dirty data to OSD, just defer flushing the capsnap. URL: https://tracker.ceph.com/issues/48679 URL: https://tracker.ceph.com/issues/48640 Signed-off-by: Xiubo Li <xiubli@xxxxxxxxxx> --- V2: - Fix inode reference leak bug fs/ceph/caps.c | 32 +++++++++++++++++++------------- fs/ceph/snap.c | 6 +++--- 2 files changed, 22 insertions(+), 16 deletions(-) diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index abbf48fc6230..2f2451d563bd 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -3047,6 +3047,7 @@ static void __ceph_put_cap_refs(struct ceph_inode_info *ci, int had, { struct inode *inode = &ci->vfs_inode; int last = 0, put = 0, flushsnaps = 0, wake = 0; + bool check_flushsnaps = false; spin_lock(&ci->i_ceph_lock); if (had & CEPH_CAP_PIN) @@ -3064,25 +3065,15 @@ static void __ceph_put_cap_refs(struct ceph_inode_info *ci, int had, if (--ci->i_wb_ref == 0) { last++; put++; + check_flushsnaps = true; } dout("put_cap_refs %p wb %d -> %d (?)\n", inode, ci->i_wb_ref+1, ci->i_wb_ref); } - if (had & CEPH_CAP_FILE_WR) + if (had & CEPH_CAP_FILE_WR) { if (--ci->i_wr_ref == 0) { last++; - if (__ceph_have_pending_cap_snap(ci)) { - struct ceph_cap_snap *capsnap = - list_last_entry(&ci->i_cap_snaps, - struct ceph_cap_snap, - ci_item); - capsnap->writing = 0; - if (ceph_try_drop_cap_snap(ci, capsnap)) - put++; - else if (__ceph_finish_cap_snap(ci, capsnap)) - flushsnaps = 1; - wake = 1; - } + check_flushsnaps = true; if (ci->i_wrbuffer_ref_head == 0 && ci->i_dirty_caps == 0 && ci->i_flushing_caps == 0) { @@ -3094,6 +3085,21 @@ static void __ceph_put_cap_refs(struct ceph_inode_info *ci, int had, if (!__ceph_is_any_real_caps(ci) && ci->i_snap_realm) drop_inode_snap_realm(ci); } + } + if (check_flushsnaps) { + if (__ceph_have_pending_cap_snap(ci)) { + struct ceph_cap_snap *capsnap = + list_last_entry(&ci->i_cap_snaps, + struct ceph_cap_snap, + ci_item); + capsnap->writing = 0; + if (ceph_try_drop_cap_snap(ci, capsnap)) + put++; + else if (__ceph_finish_cap_snap(ci, capsnap)) + flushsnaps = 1; + wake = 1; + } + } spin_unlock(&ci->i_ceph_lock); dout("put_cap_refs %p had %s%s%s\n", inode, ceph_cap_string(had), diff --git a/fs/ceph/snap.c b/fs/ceph/snap.c index b611f829cb61..639fb91cc9db 100644 --- a/fs/ceph/snap.c +++ b/fs/ceph/snap.c @@ -561,10 +561,10 @@ void ceph_queue_cap_snap(struct ceph_inode_info *ci) capsnap->context = old_snapc; list_add_tail(&capsnap->ci_item, &ci->i_cap_snaps); - if (used & CEPH_CAP_FILE_WR) { + if (used & (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER)) { dout("queue_cap_snap %p cap_snap %p snapc %p" - " seq %llu used WR, now pending\n", inode, - capsnap, old_snapc, old_snapc->seq); + " seq %llu used WR | BUFFFER, now pending\n", + inode, capsnap, old_snapc, old_snapc->seq); capsnap->writing = 1; } else { /* note mtime, size NOW. */ -- 2.27.0