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Kill CL_PROPAGATION, sanitize fs/pnode.c:get_source()

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First of all, get_source() never results in CL_PROPAGATION
alone.  We either get CL_MAKE_SHARED (for the continuation
of peer group) or CL_SLAVE (slave that is not shared) or both
(beginning of peer group among slaves).  Massage the code to
make that explicit, kill CL_PROPAGATION test in clone_mnt()
(nothing sets CL_MAKE_SHARED without CL_PROPAGATION and in
clone_mnt() we are checking CL_PROPAGATION after we'd found
that there's no CL_SLAVE, so the check for CL_MAKE_SHARED
would do just as well).

Fix comments, while we are at it...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2010-01-16 13:28:47 -05:00
parent c177c2ac8c
commit 796a6b521d
3 changed files with 19 additions and 14 deletions
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3
fs/pnode.h
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@@ -21,8 +21,7 @@
#define CL_SLAVE 0x02
#define CL_COPY_ALL 0x04
#define CL_MAKE_SHARED 0x08
#define CL_PROPAGATION 0x10
#define CL_PRIVATE 0x20
#define CL_PRIVATE 0x10
static inline void set_mnt_shared(struct vfsmount *mnt)
{