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| author | Al Viro <viro@zeniv.linux.org.uk> | 2016-04-20 22:31:31 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2016-05-03 01:49:29 +0200 |
| commit | 3781764b5cb109152af180a4f17cd3a24d5bc51f (patch) | |
| tree | dfd7482d959625031f5afb2c5a41b446f2001fc6 /fs/proc/base.c | |
| parent | introduce a parallel variant of ->iterate() (diff) | |
| download | linux-3781764b5cb109152af180a4f17cd3a24d5bc51f.tar.xz linux-3781764b5cb109152af180a4f17cd3a24d5bc51f.zip | |
proc_fill_cache(): switch to d_alloc_parallel()
... making it usable with directory locked shared
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to '')
| -rw-r--r-- | fs/proc/base.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index b1755b23893e..15b60f1a346d 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -1819,12 +1819,17 @@ bool proc_fill_cache(struct file *file, struct dir_context *ctx, child = d_hash_and_lookup(dir, &qname); if (!child) { - child = d_alloc(dir, &qname); - if (!child) - goto end_instantiate; - if (instantiate(d_inode(dir), child, task, ptr) < 0) { - dput(child); + DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq); + child = d_alloc_parallel(dir, &qname, &wq); + if (IS_ERR(child)) goto end_instantiate; + if (d_in_lookup(child)) { + int err = instantiate(d_inode(dir), child, task, ptr); + d_lookup_done(child); + if (err < 0) { + dput(child); + goto end_instantiate; + } } } inode = d_inode(child); |