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| author | Steven Whitehouse <swhiteho@redhat.com> | 2006-08-04 15:41:22 -0400 |
|---|---|---|
| committer | Steven Whitehouse <swhiteho@redhat.com> | 2006-08-04 15:41:22 -0400 |
| commit | 59a1cc6bdabf5ed148b48808ad1a418d87f5e6bf (patch) | |
| tree | 6463071a09201040267702e895d63359e62c393d /fs/gfs2/log.c | |
| parent | 899bb264507cfed83922bf14cd66a073494601ba (diff) | |
| download | linux-59a1cc6bdabf5ed148b48808ad1a418d87f5e6bf.tar.gz linux-59a1cc6bdabf5ed148b48808ad1a418d87f5e6bf.tar.xz | |
[GFS2] Fix lock ordering bug in page fault path
Mmapped files were able to trigger a lock ordering bug. Private
maps do not need to take the glock so early on. Shared maps do
unfortunately, however we can get around that by adding a flag
into the flags for the struct gfs2_file. This only works because
we are taking an exclusive lock at this point, so we know that
nobody else can be racing with us.
Fixes Red Hat bugzilla: #201196
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/log.c')
| -rw-r--r-- | fs/gfs2/log.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c index 60fdc94ccc8a..a591fb8fae20 100644 --- a/fs/gfs2/log.c +++ b/fs/gfs2/log.c @@ -256,8 +256,8 @@ static unsigned int current_tail(struct gfs2_sbd *sdp) if (list_empty(&sdp->sd_ail1_list)) tail = sdp->sd_log_head; else { - ai = list_entry(sdp->sd_ail1_list.prev, - struct gfs2_ail, ai_list); + ai = list_entry(sdp->sd_ail1_list.prev, struct gfs2_ail, + ai_list); tail = ai->ai_first; } |