diff options
| author | Chuck Lever <chuck.lever@oracle.com> | 2023-07-24 10:43:57 -0400 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2023-08-09 09:15:41 +0200 |
| commit | bbaef7973dd017954419718ab2df526ae1f66e93 (patch) | |
| tree | 5ba3c6145923e62efcb497608d54c74bdd85bafa /fs | |
| parent | a2e459555c5f9da3e619b7e47a63f98574dc75f1 (diff) | |
libfs: Add a lock class for the offset map's xa_lock
Tie the dynamically-allocated xarray locks into a single class so
contention on the directory offset xarrays can be observed.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Message-Id: <169020933088.160441.9405180953116076087.stgit@manet.1015granger.net>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/libfs.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/libfs.c b/fs/libfs.c index a7e56baf8bbd..3495f071093e 100644 --- a/fs/libfs.c +++ b/fs/libfs.c @@ -249,6 +249,8 @@ static u32 dentry2offset(struct dentry *dentry) return (u32)((uintptr_t)(dentry->d_fsdata)); } +static struct lock_class_key simple_offset_xa_lock; + /** * simple_offset_init - initialize an offset_ctx * @octx: directory offset map to be initialized @@ -257,6 +259,7 @@ static u32 dentry2offset(struct dentry *dentry) void simple_offset_init(struct offset_ctx *octx) { xa_init_flags(&octx->xa, XA_FLAGS_ALLOC1); + lockdep_set_class(&octx->xa.xa_lock, &simple_offset_xa_lock); /* 0 is '.', 1 is '..', so always start with offset 2 */ octx->next_offset = 2; |