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authorEric Paris <eparis@redhat.com>2011-05-26 17:20:14 -0400
committerEric Paris <eparis@redhat.com>2011-05-26 17:20:14 -0400
commitea77f7a2e8561012cf100c530170f12351c3b53e (patch)
tree7302ac1064f4e364aadda84020a176804fb86e22 /Documentation/filesystems/nfs
parentSELINUX: add /sys/fs/selinux mount point to put selinuxfs (diff)
parentLinux 2.6.39 (diff)
downloadlinux-dev-ea77f7a2e8561012cf100c530170f12351c3b53e.tar.xz
linux-dev-ea77f7a2e8561012cf100c530170f12351c3b53e.zip
Merge commit 'v2.6.39' into 20110526
Conflicts: lib/flex_array.c security/selinux/avc.c security/selinux/hooks.c security/selinux/ss/policydb.c security/smack/smack_lsm.c
Diffstat (limited to 'Documentation/filesystems/nfs')
-rw-r--r--Documentation/filesystems/nfs/pnfs.txt7
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/filesystems/nfs/pnfs.txt b/Documentation/filesystems/nfs/pnfs.txt
index bc0b9cfe095b..983e14abe7e9 100644
--- a/Documentation/filesystems/nfs/pnfs.txt
+++ b/Documentation/filesystems/nfs/pnfs.txt
@@ -46,3 +46,10 @@ data server cache
file driver devices refer to data servers, which are kept in a module
level cache. Its reference is held over the lifetime of the deviceid
pointing to it.
+
+lseg
+----
+lseg maintains an extra reference corresponding to the NFS_LSEG_VALID
+bit which holds it in the pnfs_layout_hdr's list. When the final lseg
+is removed from the pnfs_layout_hdr's list, the NFS_LAYOUT_DESTROYED
+bit is set, preventing any new lsegs from being added.