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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/incore.h | |
| parent | [GFS2] Fix bug in directory code (diff) | |
| download | linux-dev-59a1cc6bdabf5ed148b48808ad1a418d87f5e6bf.tar.xz linux-dev-59a1cc6bdabf5ed148b48808ad1a418d87f5e6bf.zip | |
[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/incore.h')
| -rw-r--r-- | fs/gfs2/incore.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index 90e0624d8065..e98c14f30daa 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -279,6 +279,7 @@ static inline struct gfs2_sbd *GFS2_SB(struct inode *inode) enum { GFF_DID_DIRECT_ALLOC = 0, + GFF_EXLOCK = 1, }; struct gfs2_file { |