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| author | Henry C Chang <henry.cy.chang@gmail.com> | 2011-05-11 14:29:54 +0400 |
|---|---|---|
| committer | Sage Weil <sage@newdream.net> | 2011-05-11 21:44:48 +0400 |
| commit | d3d0720d4a7a46e93e055e5b0f1a8bd612743ed6 (patch) | |
| tree | 39d657139336012f05d7573116a0ba2405e85de7 /fs/ceph/inode.c | |
| parent | a26a185d27b49e1656b335ef8ad1a32f7a0e7d7f (diff) | |
| download | linux-d3d0720d4a7a46e93e055e5b0f1a8bd612743ed6.tar.xz | |
ceph: do not use i_wrbuffer_ref as refcount for Fb cap
We increments i_wrbuffer_ref when taking the Fb cap. This breaks
the dirty page accounting and causes looping in
__ceph_do_pending_vmtruncate, and ceph client hangs.
This bug can be reproduced occasionally by running blogbench.
Add a new field i_wb_ref to inode and dedicate it to Fb reference
counting.
Signed-off-by: Henry C Chang <henry.cy.chang@gmail.com>
Signed-off-by: Sage Weil <sage@newdream.net>
Diffstat (limited to 'fs/ceph/inode.c')
| -rw-r--r-- | fs/ceph/inode.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index 03d6dafda61f..70b6a4839c38 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -355,6 +355,7 @@ struct inode *ceph_alloc_inode(struct super_block *sb) ci->i_rd_ref = 0; ci->i_rdcache_ref = 0; ci->i_wr_ref = 0; + ci->i_wb_ref = 0; ci->i_wrbuffer_ref = 0; ci->i_wrbuffer_ref_head = 0; ci->i_shared_gen = 0; |