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filelock: make __locks_delete_block and __locks_wake_up_blocks take file_lock_core

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Convert __locks_delete_block and __locks_wake_up_blocks to take a struct
file_lock_core pointer.

While we could do this in another way, we're going to need to add a
file_lock() helper function later anyway, so introduce and use it now.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Link: https://lore.kernel.org/r/20240131-flsplit-v3-24-c6129007ee8d@kernel.org
Reviewed-by: NeilBrown <neilb@suse.de>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Jeff Layton 2024-01-31 18:02:05 -05:00 committed by Christian Brauner
parent 1a6c75d4bb
commit 1a62c22a15
No known key found for this signature in database
GPG key ID: 91C61BC06578DCA2
1 changed files with 27 additions and 18 deletions
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45
fs/locks.c
View file

@ -69,6 +69,11 @@
#include <linux/uaccess.h>
static struct file_lock *file_lock(struct file_lock_core *flc)
{
return container_of(flc, struct file_lock, c);
}
static bool lease_breaking(struct file_lock *fl)
{
return fl->c.flc_flags & (FL_UNLOCK_PENDING | FL_DOWNGRADE_PENDING);
@ -654,31 +659,35 @@ static void locks_delete_global_blocked(struct file_lock_core *waiter)
*
* Must be called with blocked_lock_lock held.
*/
static void __locks_delete_block(struct file_lock *waiter)
static void __locks_delete_block(struct file_lock_core *waiter)
{
locks_delete_global_blocked(&waiter->c);
list_del_init(&waiter->c.flc_blocked_member);
locks_delete_global_blocked(waiter);
list_del_init(&waiter->flc_blocked_member);
}
static void __locks_wake_up_blocks(struct file_lock *blocker)
static void __locks_wake_up_blocks(struct file_lock_core *blocker)
{
while (!list_empty(&blocker->c.flc_blocked_requests)) {
struct file_lock *waiter;
while (!list_empty(&blocker->flc_blocked_requests)) {
struct file_lock_core *waiter;
struct file_lock *fl;
waiter = list_first_entry(&blocker->c.flc_blocked_requests,
struct file_lock, c.flc_blocked_member);
waiter = list_first_entry(&blocker->flc_blocked_requests,
struct file_lock_core, flc_blocked_member);
fl = file_lock(waiter);
__locks_delete_block(waiter);
if (waiter->fl_lmops && waiter->fl_lmops->lm_notify)
waiter->fl_lmops->lm_notify(waiter);
if ((waiter->flc_flags & (FL_POSIX | FL_FLOCK)) &&
fl->fl_lmops && fl->fl_lmops->lm_notify)
fl->fl_lmops->lm_notify(fl);
else
locks_wake_up(waiter);
locks_wake_up(fl);
/*
* The setting of fl_blocker to NULL marks the "done"
* The setting of flc_blocker to NULL marks the "done"
* point in deleting a block. Paired with acquire at the top
* of locks_delete_block().
*/
smp_store_release(&waiter->c.flc_blocker, NULL);
smp_store_release(&waiter->flc_blocker, NULL);
}
}
@ -720,8 +729,8 @@ int locks_delete_block(struct file_lock *waiter)
spin_lock(&blocked_lock_lock);
if (waiter->c.flc_blocker)
status = 0;
__locks_wake_up_blocks(waiter);
__locks_delete_block(waiter);
__locks_wake_up_blocks(&waiter->c);
__locks_delete_block(&waiter->c);
/*
* The setting of fl_blocker to NULL marks the "done" point in deleting
@ -773,7 +782,7 @@ static void __locks_insert_block(struct file_lock *blocker,
* waiter, but might not conflict with blocker, or the requests
* and lock which block it. So they all need to be woken.
*/
__locks_wake_up_blocks(waiter);
__locks_wake_up_blocks(&waiter->c);
}
/* Must be called with flc_lock held. */
@ -805,7 +814,7 @@ static void locks_wake_up_blocks(struct file_lock *blocker)
return;
spin_lock(&blocked_lock_lock);
__locks_wake_up_blocks(blocker);
__locks_wake_up_blocks(&blocker->c);
spin_unlock(&blocked_lock_lock);
}
@ -1159,7 +1168,7 @@ static int posix_lock_inode(struct inode *inode, struct file_lock *request,
* Ensure that we don't find any locks blocked on this
* request during deadlock detection.
*/
__locks_wake_up_blocks(request);
__locks_wake_up_blocks(&request->c);
if (likely(!posix_locks_deadlock(request, fl))) {
error = FILE_LOCK_DEFERRED;
__locks_insert_block(fl, request,