diff options
| -rw-r--r-- | fs/dlm/ast.c | 14 | ||||
| -rw-r--r-- | fs/dlm/dlm_internal.h | 1 | ||||
| -rw-r--r-- | fs/dlm/user.c | 15 |
3 files changed, 17 insertions, 13 deletions
diff --git a/fs/dlm/ast.c b/fs/dlm/ast.c index 1f2f70a1b824..decedc4ee15f 100644 --- a/fs/dlm/ast.c +++ b/fs/dlm/ast.c @@ -12,6 +12,7 @@ #include <trace/events/dlm.h> #include "dlm_internal.h" +#include "lvb_table.h" #include "memory.h" #include "lock.h" #include "user.h" @@ -42,6 +43,7 @@ int dlm_enqueue_lkb_callback(struct dlm_lkb *lkb, uint32_t flags, int mode, struct dlm_ls *ls = lkb->lkb_resource->res_ls; int rv = DLM_ENQUEUE_CALLBACK_SUCCESS; struct dlm_callback *cb; + int copy_lvb = 0; int prev_mode; if (flags & DLM_CB_BAST) { @@ -73,6 +75,17 @@ int dlm_enqueue_lkb_callback(struct dlm_lkb *lkb, uint32_t flags, int mode, goto out; } } + } else if (flags & DLM_CB_CAST) { + if (test_bit(DLM_DFL_USER_BIT, &lkb->lkb_dflags)) { + if (lkb->lkb_last_cast) + prev_mode = lkb->lkb_last_cb->mode; + else + prev_mode = -1; + + if (!status && lkb->lkb_lksb->sb_lvbptr && + dlm_lvb_operations[prev_mode + 1][mode + 1]) + copy_lvb = 1; + } } cb = dlm_allocate_cb(); @@ -85,6 +98,7 @@ int dlm_enqueue_lkb_callback(struct dlm_lkb *lkb, uint32_t flags, int mode, cb->mode = mode; cb->sb_status = status; cb->sb_flags = (sbflags & 0x000000FF); + cb->copy_lvb = copy_lvb; kref_init(&cb->ref); if (!test_and_set_bit(DLM_IFL_CB_PENDING_BIT, &lkb->lkb_iflags)) rv = DLM_ENQUEUE_CALLBACK_NEED_SCHED; diff --git a/fs/dlm/dlm_internal.h b/fs/dlm/dlm_internal.h index 3b4dbce849f0..a9137c90f348 100644 --- a/fs/dlm/dlm_internal.h +++ b/fs/dlm/dlm_internal.h @@ -222,6 +222,7 @@ struct dlm_callback { int sb_status; /* copy to lksb status */ uint8_t sb_flags; /* copy to lksb flags */ int8_t mode; /* rq mode of bast, gr mode of cast */ + int copy_lvb; struct list_head list; struct kref ref; diff --git a/fs/dlm/user.c b/fs/dlm/user.c index 9f9b68448830..12a483deeef5 100644 --- a/fs/dlm/user.c +++ b/fs/dlm/user.c @@ -21,7 +21,6 @@ #include "dlm_internal.h" #include "lockspace.h" #include "lock.h" -#include "lvb_table.h" #include "user.h" #include "ast.h" #include "config.h" @@ -806,8 +805,7 @@ static ssize_t device_read(struct file *file, char __user *buf, size_t count, struct dlm_lkb *lkb; DECLARE_WAITQUEUE(wait, current); struct dlm_callback *cb; - int rv, ret, copy_lvb = 0; - int old_mode, new_mode; + int rv, ret; if (count == sizeof(struct dlm_device_version)) { rv = copy_version_to_user(buf, count); @@ -864,9 +862,6 @@ static ssize_t device_read(struct file *file, char __user *buf, size_t count, lkb = list_first_entry(&proc->asts, struct dlm_lkb, lkb_cb_list); - /* rem_lkb_callback sets a new lkb_last_cast */ - old_mode = lkb->lkb_last_cast->mode; - rv = dlm_dequeue_lkb_callback(lkb, &cb); switch (rv) { case DLM_DEQUEUE_CALLBACK_EMPTY: @@ -895,12 +890,6 @@ static ssize_t device_read(struct file *file, char __user *buf, size_t count, if (cb->flags & DLM_CB_BAST) { trace_dlm_bast(lkb->lkb_resource->res_ls, lkb, cb->mode); } else if (cb->flags & DLM_CB_CAST) { - new_mode = cb->mode; - - if (!cb->sb_status && lkb->lkb_lksb->sb_lvbptr && - dlm_lvb_operations[old_mode + 1][new_mode + 1]) - copy_lvb = 1; - lkb->lkb_lksb->sb_status = cb->sb_status; lkb->lkb_lksb->sb_flags = cb->sb_flags; trace_dlm_ast(lkb->lkb_resource->res_ls, lkb); @@ -908,7 +897,7 @@ static ssize_t device_read(struct file *file, char __user *buf, size_t count, ret = copy_result_to_user(lkb->lkb_ua, test_bit(DLM_PROC_FLAGS_COMPAT, &proc->flags), - cb->flags, cb->mode, copy_lvb, buf, count); + cb->flags, cb->mode, cb->copy_lvb, buf, count); kref_put(&cb->ref, dlm_release_callback); |