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| author | Benjamin Marzinski <bmarzins@redhat.com> | 2011-06-13 21:27:40 +0200 |
|---|---|---|
| committer | Steven Whitehouse <swhiteho@redhat.com> | 2011-07-12 10:15:24 +0200 |
| commit | 1ce533686c7d40bf900dc346a7279c17a9ee8e0e (patch) | |
| tree | fceea4beb94bb819577ea410919c2b603ddef30f /fs/gfs2/glops.c | |
| parent | Linux 3.0-rc7 (diff) | |
| download | linux-1ce533686c7d40bf900dc346a7279c17a9ee8e0e.tar.xz linux-1ce533686c7d40bf900dc346a7279c17a9ee8e0e.zip | |
GFS2: force a log flush when invalidating the rindex glock
Right now, there is nothing that forces the log to get flushed when a node
drops its rindex glock so that another node can grow the filesystem. If the
log doesn't get flushed, GFS2 can corrupt the sd_log_le_rg list in the
following way.
A node puts an rgd on the list in rg_lo_add(), and then the rindex glock is
dropped so the other node can grow the filesystem. When the node reacquires the
rindex glock, that rgd gets deleted in clear_rgrpdi() before ever being
removed from the list by gfs2_log_flush().
This code simply forces a log flush when the rindex glock is invalidated,
solving the problem.
Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/glops.c')
| -rw-r--r-- | fs/gfs2/glops.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c index 8ef70f464731..712b722030a1 100644 --- a/fs/gfs2/glops.c +++ b/fs/gfs2/glops.c @@ -221,8 +221,10 @@ static void inode_go_inval(struct gfs2_glock *gl, int flags) } } - if (ip == GFS2_I(gl->gl_sbd->sd_rindex)) + if (ip == GFS2_I(gl->gl_sbd->sd_rindex)) { + gfs2_log_flush(gl->gl_sbd, NULL); gl->gl_sbd->sd_rindex_uptodate = 0; + } if (ip && S_ISREG(ip->i_inode.i_mode)) truncate_inode_pages(ip->i_inode.i_mapping, 0); } |