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| author | Al Viro <viro@zeniv.linux.org.uk> | 2015-05-03 20:01:27 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2015-05-10 22:20:02 -0400 |
| commit | 071bf501379560a7631b8d75ac80165bf82735c4 (patch) | |
| tree | e85e69c4f98b12fc7d5a619c34ec62278bad3879 /block/cmdline-parser.c | |
| parent | 894bc8c4662ba9daceafe943a5ba0dd407da5cd3 (diff) | |
| download | lwn-071bf501379560a7631b8d75ac80165bf82735c4.tar.gz lwn-071bf501379560a7631b8d75ac80165bf82735c4.zip | |
link_path_walk: nd->depth massage, part 1
nd->stack[0] is unused until the handling of trailing symlinks and
we want to get rid of that. Having fucked that transformation up
several times, I went for bloody pedantic series of provably equivalent
transformations. Sorry.
Step 1: keep nd->depth higher by one in link_path_walk() - increment upon
entry, decrement on exits, adjust the arithmetics inside and surround the
calls of functions that care about nd->depth value (nd_alloc_stack(),
get_link(), put_link()) with decrement/increment pairs.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'block/cmdline-parser.c')
0 files changed, 0 insertions, 0 deletions