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authorNick Piggin <npiggin@kernel.dk>2011-01-07 17:49:34 +1100
committerNick Piggin <npiggin@kernel.dk>2011-01-07 17:50:21 +1100
commit2fd6b7f50797f2e993eea59e0a0b8c6399c811dc (patch)
treece33b94b34844c09103836cf4cfa4364b742f217 /fs/autofs4/autofs_i.h
parentfs: dcache scale d_unhashed (diff)
downloadlinux-dev-2fd6b7f50797f2e993eea59e0a0b8c6399c811dc.tar.xz
linux-dev-2fd6b7f50797f2e993eea59e0a0b8c6399c811dc.zip
fs: dcache scale subdirs
Protect d_subdirs and d_child with d_lock, except in filesystems that aren't using dcache_lock for these anyway (eg. using i_mutex). Note: if we change the locking rule in future so that ->d_child protection is provided only with ->d_parent->d_lock, it may allow us to reduce some locking. But it would be an exception to an otherwise regular locking scheme, so we'd have to see some good results. Probably not worthwhile. Signed-off-by: Nick Piggin <npiggin@kernel.dk>
Diffstat (limited to 'fs/autofs4/autofs_i.h')
-rw-r--r--fs/autofs4/autofs_i.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/autofs4/autofs_i.h b/fs/autofs4/autofs_i.h
index 3912dcf047e5..9d2ae9b30d9f 100644
--- a/fs/autofs4/autofs_i.h
+++ b/fs/autofs4/autofs_i.h
@@ -254,6 +254,17 @@ static inline int simple_positive(struct dentry *dentry)
return dentry->d_inode && !d_unhashed(dentry);
}
+static inline void __autofs4_add_expiring(struct dentry *dentry)
+{
+ struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
+ struct autofs_info *ino = autofs4_dentry_ino(dentry);
+ if (ino) {
+ if (list_empty(&ino->expiring))
+ list_add(&ino->expiring, &sbi->expiring_list);
+ }
+ return;
+}
+
static inline void autofs4_add_expiring(struct dentry *dentry)
{
struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);