diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ocfs2/dlmglue.c | 50 |
1 files changed, 32 insertions, 18 deletions
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c index 399d6e24b8db..d92756dcd477 100644 --- a/fs/ocfs2/dlmglue.c +++ b/fs/ocfs2/dlmglue.c @@ -71,7 +71,7 @@ static struct ocfs2_super *ocfs2_get_dentry_osb(struct ocfs2_lock_res *lockres); static struct ocfs2_super *ocfs2_get_inode_osb(struct ocfs2_lock_res *lockres); /* - * Return value from ocfs2_convert_worker_t functions. + * Return value from ->downconvert_worker functions. * * These control the precise actions of ocfs2_generic_unblock_lock() * and ocfs2_process_blocked_lock() @@ -98,16 +98,23 @@ static void ocfs2_set_meta_lvb(struct ocfs2_lock_res *lockres); static int ocfs2_unblock_data(struct ocfs2_lock_res *lockres, struct ocfs2_unblock_ctl *ctl); +static int ocfs2_data_convert_worker(struct ocfs2_lock_res *lockres, + int blocking); + static int ocfs2_unblock_inode_lock(struct ocfs2_lock_res *lockres, struct ocfs2_unblock_ctl *ctl); + static int ocfs2_unblock_dentry_lock(struct ocfs2_lock_res *lockres, struct ocfs2_unblock_ctl *ctl); -static int ocfs2_unblock_osb_lock(struct ocfs2_lock_res *lockres, - struct ocfs2_unblock_ctl *ctl); +static int ocfs2_dentry_convert_worker(struct ocfs2_lock_res *lockres, + int blocking); static void ocfs2_dentry_post_unlock(struct ocfs2_super *osb, struct ocfs2_lock_res *lockres); +static int ocfs2_unblock_osb_lock(struct ocfs2_lock_res *lockres, + struct ocfs2_unblock_ctl *ctl); + /* * OCFS2 Lock Resource Operations * @@ -146,6 +153,17 @@ struct ocfs2_lock_res_ops { void (*set_lvb)(struct ocfs2_lock_res *); /* + * Called from the downconvert thread when it is determined + * that a lock will be downconverted. This is called without + * any locks held so the function can do work that might + * schedule (syncing out data, etc). + * + * This should return any one of the ocfs2_unblock_action + * values, depending on what it wants the thread to do. + */ + int (*downconvert_worker)(struct ocfs2_lock_res *, int); + + /* * LOCK_TYPE_* flags which describe the specific requirements * of a lock type. Descriptions of each individual flag follow. */ @@ -168,11 +186,9 @@ struct ocfs2_lock_res_ops { */ #define LOCK_TYPE_USES_LVB 0x2 -typedef int (ocfs2_convert_worker_t)(struct ocfs2_lock_res *, int); static int ocfs2_generic_unblock_lock(struct ocfs2_super *osb, struct ocfs2_lock_res *lockres, - struct ocfs2_unblock_ctl *ctl, - ocfs2_convert_worker_t *worker); + struct ocfs2_unblock_ctl *ctl); static struct ocfs2_lock_res_ops ocfs2_inode_rw_lops = { .get_osb = ocfs2_get_inode_osb, @@ -191,6 +207,7 @@ static struct ocfs2_lock_res_ops ocfs2_inode_meta_lops = { static struct ocfs2_lock_res_ops ocfs2_inode_data_lops = { .get_osb = ocfs2_get_inode_osb, .unblock = ocfs2_unblock_data, + .downconvert_worker = ocfs2_data_convert_worker, .flags = 0, }; @@ -208,6 +225,7 @@ static struct ocfs2_lock_res_ops ocfs2_dentry_lops = { .get_osb = ocfs2_get_dentry_osb, .unblock = ocfs2_unblock_dentry_lock, .post_unlock = ocfs2_dentry_post_unlock, + .downconvert_worker = ocfs2_dentry_convert_worker, .flags = 0, }; @@ -2537,8 +2555,7 @@ static int ocfs2_cancel_convert(struct ocfs2_super *osb, static int ocfs2_generic_unblock_lock(struct ocfs2_super *osb, struct ocfs2_lock_res *lockres, - struct ocfs2_unblock_ctl *ctl, - ocfs2_convert_worker_t *worker) + struct ocfs2_unblock_ctl *ctl) { unsigned long flags; int blocking; @@ -2594,7 +2611,7 @@ recheck: /* If we get here, then we know that there are no more * incompatible holders (and anyone asking for an incompatible * lock is blocked). We can now downconvert the lock */ - if (!worker) + if (!lockres->l_ops->downconvert_worker) goto downconvert; /* Some lockres types want to do a bit of work before @@ -2604,7 +2621,7 @@ recheck: blocking = lockres->l_blocking; spin_unlock_irqrestore(&lockres->l_lock, flags); - ctl->unblock_action = worker(lockres, blocking); + ctl->unblock_action = lockres->l_ops->downconvert_worker(lockres, blocking); if (ctl->unblock_action == UNBLOCK_STOP_POST) goto leave; @@ -2692,8 +2709,7 @@ int ocfs2_unblock_data(struct ocfs2_lock_res *lockres, mlog(0, "unblock inode %llu\n", (unsigned long long)OCFS2_I(inode)->ip_blkno); - status = ocfs2_generic_unblock_lock(osb, lockres, ctl, - ocfs2_data_convert_worker); + status = ocfs2_generic_unblock_lock(osb, lockres, ctl); if (status < 0) mlog_errno(status); @@ -2717,7 +2733,7 @@ static int ocfs2_unblock_inode_lock(struct ocfs2_lock_res *lockres, inode = ocfs2_lock_res_inode(lockres); status = ocfs2_generic_unblock_lock(OCFS2_SB(inode->i_sb), - lockres, ctl, NULL); + lockres, ctl); if (status < 0) mlog_errno(status); @@ -2762,7 +2778,7 @@ static int ocfs2_unblock_meta(struct ocfs2_lock_res *lockres, (unsigned long long)OCFS2_I(inode)->ip_blkno); status = ocfs2_generic_unblock_lock(OCFS2_SB(inode->i_sb), - lockres, ctl, NULL); + lockres, ctl); if (status < 0) mlog_errno(status); @@ -2907,8 +2923,7 @@ static int ocfs2_unblock_dentry_lock(struct ocfs2_lock_res *lockres, ret = ocfs2_generic_unblock_lock(osb, lockres, - ctl, - ocfs2_dentry_convert_worker); + ctl); if (ret < 0) mlog_errno(ret); @@ -2933,8 +2948,7 @@ static int ocfs2_unblock_osb_lock(struct ocfs2_lock_res *lockres, status = ocfs2_generic_unblock_lock(osb, lockres, - ctl, - NULL); + ctl); if (status < 0) mlog_errno(status); |