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| author | Al Viro <viro@zeniv.linux.org.uk> | 2016-04-20 23:36:09 +0300 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2016-05-03 02:49:30 +0300 |
| commit | 76aab3ab61f3051362f20fc26e2c50a65d6ba904 (patch) | |
| tree | cba211535a3e126b192c4c8e70654d46e5f2baf3 /fs/proc | |
| parent | 3781764b5cb109152af180a4f17cd3a24d5bc51f (diff) | |
| download | linux-76aab3ab61f3051362f20fc26e2c50a65d6ba904.tar.xz | |
proc_sys_fill_cache(): switch to d_alloc_parallel()
make it usable with directory locked shared
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/proc')
| -rw-r--r-- | fs/proc/proc_sysctl.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c index fe5b6e6c4671..d69e2385862c 100644 --- a/fs/proc/proc_sysctl.c +++ b/fs/proc/proc_sysctl.c @@ -627,18 +627,19 @@ static bool proc_sys_fill_cache(struct file *file, child = d_lookup(dir, &qname); if (!child) { - child = d_alloc(dir, &qname); - if (child) { + DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq); + child = d_alloc_parallel(dir, &qname, &wq); + if (IS_ERR(child)) + return false; + if (d_in_lookup(child)) { inode = proc_sys_make_inode(dir->d_sb, head, table); if (!inode) { + d_lookup_done(child); dput(child); return false; - } else { - d_set_d_op(child, &proc_sys_dentry_operations); - d_add(child, inode); } - } else { - return false; + d_set_d_op(child, &proc_sys_dentry_operations); + d_add(child, inode); } } inode = d_inode(child); |