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ceph: use locks_inode_context helper

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ceph currently doesn't access i_flctx safely. This requires a
smp_load_acquire, as the pointer is set via cmpxchg (a release
operation).

Reviewed-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
This commit is contained in:
Jeff Layton 2022-11-16 08:44:25 -05:00
parent 401a8b8fd5
commit d4e78663f6
1 changed files with 2 additions and 2 deletions
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4
fs/ceph/locks.c
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@ -364,7 +364,7 @@ void ceph_count_locks(struct inode *inode, int *fcntl_count, int *flock_count)
*fcntl_count = 0;
*flock_count = 0;
ctx = inode->i_flctx;
ctx = locks_inode_context(inode);
if (ctx) {
spin_lock(&ctx->flc_lock);
list_for_each_entry(lock, &ctx->flc_posix, fl_list)
@ -418,7 +418,7 @@ int ceph_encode_locks_to_buffer(struct inode *inode,
int num_fcntl_locks, int num_flock_locks)
{
struct file_lock *lock;
struct file_lock_context *ctx = inode->i_flctx;
struct file_lock_context *ctx = locks_inode_context(inode);
int err = 0;
int seen_fcntl = 0;
int seen_flock = 0;