Jan Kara wrote:
> You can verify this by looking at disassembly of start_this_handle() in your
> kernel and finding out where offset 0x22d is in the function...
I confirmed that the function
[<c02c7ead>] start_this_handle+0x22d/0x390
is the one in fs/jbd/transaction.o .
c02c7ea4: eb 07 jmp c02c7ead <start_this_handle+0x22d>
c02c7ea6: 66 90 xchg %ax,%ax
c02c7ea8: e8 93 a6 2e 00 call c05b2540 <schedule>
c02c7ead: 89 d8 mov %ebx,%eax
c02c7eaf: b9 02 00 00 00 mov $0x2,%ecx
c02c7eb4: 8d 55 e0 lea -0x20(%ebp),%edx
c02c7eb7: e8 d4 82 ea ff call c0170190 <prepare_to_wait>
c02c7ebc: 8b 46 18 mov 0x18(%esi),%eax
c02c7ebf: 85 c0 test %eax,%eax
c02c7ec1: 75 e5 jne c02c7ea8 <start_this_handle+0x228>
c02c7ec3: 8b 45 cc mov -0x34(%ebp),%eax
c02c7ec6: 8d 55 e0 lea -0x20(%ebp),%edx
c02c7ec9: e8 e2 81 ea ff call c01700b0 <finish_wait>
c02c7ece: e9 08 fe ff ff jmp c02c7cdb <start_this_handle+0x5b>
The location in that function is
/* Wait on the journal's transaction barrier if necessary */
if (journal->j_barrier_count) {
spin_unlock(&journal->j_state_lock);
wait_event(journal->j_wait_transaction_locked,
journal->j_barrier_count == 0);
goto repeat;
}
. (Disassembly with mixed code attached at the bottom.)
> But in this case - does the process (sh) eventually resume or is it stuck
> forever?
I waited for a few hours but the process did not resume. Thus, I gave up.
Regards.
----------
00000940 <start_this_handle>:
* to begin. Attach the handle to a transaction and set up the
* transaction's buffer credits.
*/
static int start_this_handle(journal_t *journal, handle_t *handle)
{
940: 55 push %ebp
941: 89 e5 mov %esp,%ebp
943: 57 push %edi
944: 56 push %esi
945: 53 push %ebx
946: 83 ec 48 sub $0x48,%esp
949: e8 fc ff ff ff call 94a <start_this_handle+0xa>
94e: 89 c6 mov %eax,%esi
950: 89 55 c4 mov %edx,-0x3c(%ebp)
transaction_t *transaction;
int needed;
int nblocks = handle->h_buffer_credits;
953: 8b 42 04 mov 0x4(%edx),%eax
956: 89 45 d8 mov %eax,-0x28(%ebp)
transaction_t *new_transaction = NULL;
int ret = 0;
if (nblocks > journal->j_max_transaction_buffers) {
959: 8b 86 ec 00 00 00 mov 0xec(%esi),%eax
95f: 39 45 d8 cmp %eax,-0x28(%ebp)
962: 0f 8f ed 02 00 00 jg c55 <start_this_handle+0x315>
/*
* We need to hold j_state_lock until t_updates has been incremented,
* for proper journal barrier handling
*/
spin_lock(&journal->j_state_lock);
968: 8d 46 14 lea 0x14(%esi),%eax
}
/* Wait on the journal's transaction barrier if necessary */
if (journal->j_barrier_count) {
spin_unlock(&journal->j_state_lock);
wait_event(journal->j_wait_transaction_locked,
96b: 8d 56 3c lea 0x3c(%esi),%edx
spin_lock_init(&transaction->t_handle_lock);
/* Set up the commit timer for the new transaction. */
journal->j_commit_timer.expires =
round_jiffies_up(transaction->t_expires);
add_timer(&journal->j_commit_timer);
96e: 8d 8e f4 00 00 00 lea 0xf4(%esi),%ecx
/*
* We need to hold j_state_lock until t_updates has been incremented,
* for proper journal barrier handling
*/
spin_lock(&journal->j_state_lock);
974: 89 45 d4 mov %eax,-0x2c(%ebp)
}
/* Wait on the journal's transaction barrier if necessary */
if (journal->j_barrier_count) {
spin_unlock(&journal->j_state_lock);
wait_event(journal->j_wait_transaction_locked,
977: 89 55 cc mov %edx,-0x34(%ebp)
97a: 64 a1 00 00 00 00 mov %fs:0x0,%eax
spin_lock_init(&transaction->t_handle_lock);
/* Set up the commit timer for the new transaction. */
journal->j_commit_timer.expires =
round_jiffies_up(transaction->t_expires);
add_timer(&journal->j_commit_timer);
980: 89 4d d0 mov %ecx,-0x30(%ebp)
983: 89 45 c8 mov %eax,-0x38(%ebp)
986: 89 45 c0 mov %eax,-0x40(%ebp)
ret = -ENOSPC;
goto out;
}
alloc_transaction:
if (!journal->j_running_transaction) {
989: 8b 7e 30 mov 0x30(%esi),%edi
98c: 85 ff test %edi,%edi
98e: 0f 84 85 02 00 00 je c19 <start_this_handle+0x2d9>
994: c7 45 dc 00 00 00 00 movl $0x0,-0x24(%ebp)
/*
* We need to hold j_state_lock until t_updates has been incremented,
* for proper journal barrier handling
*/
spin_lock(&journal->j_state_lock);
99b: 8b 45 d4 mov -0x2c(%ebp),%eax
99e: e8 fc ff ff ff call 99f <start_this_handle+0x5f>
* transactions.
*/
static inline int is_journal_aborted(journal_t *journal)
{
return journal->j_flags & JFS_ABORT;
9a3: 8b 06 mov (%esi),%eax
repeat_locked:
if (is_journal_aborted(journal) ||
9a5: a8 02 test $0x2,%al
9a7: 74 66 je a0f <start_this_handle+0xcf>
9a9: e9 5a 01 00 00 jmp b08 <start_this_handle+0x1c8>
9ae: 66 90 xchg %ax,%ax
/*
* If the current transaction is locked down for commit, wait for the
* lock to be released.
*/
if (transaction->t_state == T_LOCKED) {
9b0: 83 7b 08 01 cmpl $0x1,0x8(%ebx)
9b4: 0f 84 fe 00 00 00 je ab8 <start_this_handle+0x178>
/*
* If there is not enough space left in the log to write all potential
* buffers requested by this operation, we need to stall pending a log
* checkpoint to free some more log space.
*/
spin_lock(&transaction->t_handle_lock);
9ba: 8d 7b 3c lea 0x3c(%ebx),%edi
9bd: 89 f8 mov %edi,%eax
9bf: 90 nop
9c0: e8 fc ff ff ff call 9c1 <start_this_handle+0x81>
needed = transaction->t_outstanding_credits + nblocks;
9c5: 8b 45 d8 mov -0x28(%ebp),%eax
9c8: 03 43 44 add 0x44(%ebx),%eax
if (needed > journal->j_max_transaction_buffers) {
9cb: 3b 86 ec 00 00 00 cmp 0xec(%esi),%eax
9d1: 0f 8f c1 01 00 00 jg b98 <start_this_handle+0x258>
* committing_transaction->t_outstanding_credits plus "enough" for
* the log control blocks.
* Also, this test is inconsitent with the matching one in
* journal_extend().
*/
if (__log_space_left(journal) < jbd_space_needed(journal)) {
9d7: 89 f0 mov %esi,%eax
9d9: e8 fc ff ff ff call 9da <start_this_handle+0x9a>
* before a new transaction may be started. Must be called under j_state_lock.
*/
static inline int jbd_space_needed(journal_t *journal)
{
int nblocks = journal->j_max_transaction_buffers;
if (journal->j_committing_transaction)
9de: 8b 4e 34 mov 0x34(%esi),%ecx
* Return the minimum number of blocks which must be free in the journal
* before a new transaction may be started. Must be called under j_state_lock.
*/
static inline int jbd_space_needed(journal_t *journal)
{
int nblocks = journal->j_max_transaction_buffers;
9e1: 8b 96 ec 00 00 00 mov 0xec(%esi),%edx
if (journal->j_committing_transaction)
9e7: 85 c9 test %ecx,%ecx
9e9: 74 03 je 9ee <start_this_handle+0xae>
nblocks += journal->j_committing_transaction->
9eb: 03 51 44 add 0x44(%ecx),%edx
9ee: 39 d0 cmp %edx,%eax
9f0: 0f 8d ea 01 00 00 jge be0 <start_this_handle+0x2a0>
9f6: 89 f8 mov %edi,%eax
9f8: ff 15 14 00 00 00 call *0x14
jbd_debug(2, "Handle %p waiting for checkpoint...\n", handle);
spin_unlock(&transaction->t_handle_lock);
__log_wait_for_space(journal);
9fe: 89 f0 mov %esi,%eax
a00: e8 fc ff ff ff call a01 <start_this_handle+0xc1>
* transactions.
*/
static inline int is_journal_aborted(journal_t *journal)
{
return journal->j_flags & JFS_ABORT;
a05: 8b 06 mov (%esi),%eax
* We need to hold j_state_lock until t_updates has been incremented,
* for proper journal barrier handling
*/
spin_lock(&journal->j_state_lock);
repeat_locked:
if (is_journal_aborted(journal) ||
a07: a8 02 test $0x2,%al
a09: 0f 85 f9 00 00 00 jne b08 <start_this_handle+0x1c8>
(journal->j_errno != 0 && !(journal->j_flags & JFS_ACK_ERR))) {
a0f: 8b 5e 04 mov 0x4(%esi),%ebx
a12: 85 db test %ebx,%ebx
a14: 74 08 je a1e <start_this_handle+0xde>
* We need to hold j_state_lock until t_updates has been incremented,
* for proper journal barrier handling
*/
spin_lock(&journal->j_state_lock);
repeat_locked:
if (is_journal_aborted(journal) ||
a16: a8 04 test $0x4,%al
a18: 0f 84 ea 00 00 00 je b08 <start_this_handle+0x1c8>
ret = -EROFS;
goto out;
}
/* Wait on the journal's transaction barrier if necessary */
if (journal->j_barrier_count) {
a1e: 8b 4e 18 mov 0x18(%esi),%ecx
a21: 85 c9 test %ecx,%ecx
a23: 0f 85 07 01 00 00 jne b30 <start_this_handle+0x1f0>
wait_event(journal->j_wait_transaction_locked,
journal->j_barrier_count == 0);
goto repeat;
}
if (!journal->j_running_transaction) {
a29: 8b 5e 30 mov 0x30(%esi),%ebx
a2c: 85 db test %ebx,%ebx
a2e: 75 80 jne 9b0 <start_this_handle+0x70>
if (!new_transaction) {
a30: 8b 7d dc mov -0x24(%ebp),%edi
a33: 85 ff test %edi,%edi
a35: 0f 84 d0 01 00 00 je c0b <start_this_handle+0x2cb>
*/
static transaction_t *
get_transaction(journal_t *journal, transaction_t *transaction)
{
transaction->t_journal = journal;
a3b: 8b 55 dc mov -0x24(%ebp),%edx
a3e: 89 32 mov %esi,(%edx)
transaction->t_state = T_RUNNING;
a40: c7 42 08 00 00 00 00 movl $0x0,0x8(%edx)
transaction->t_start_time = ktime_get();
a47: e8 fc ff ff ff call a48 <start_this_handle+0x108>
a4c: 8b 4d dc mov -0x24(%ebp),%ecx
a4f: 89 41 54 mov %eax,0x54(%ecx)
a52: 89 51 58 mov %edx,0x58(%ecx)
transaction->t_tid = journal->j_transaction_sequence++;
a55: 8b 86 cc 00 00 00 mov 0xcc(%esi),%eax
a5b: 89 41 04 mov %eax,0x4(%ecx)
a5e: 83 c0 01 add $0x1,%eax
a61: 89 86 cc 00 00 00 mov %eax,0xcc(%esi)
transaction->t_expires = jiffies + journal->j_commit_interval;
a67: a1 00 00 00 00 mov 0x0,%eax
a6c: 03 86 f0 00 00 00 add 0xf0(%esi),%eax
spin_lock_init(&transaction->t_handle_lock);
a72: c7 41 3c 00 00 00 00 movl $0x0,0x3c(%ecx)
{
transaction->t_journal = journal;
transaction->t_state = T_RUNNING;
transaction->t_start_time = ktime_get();
transaction->t_tid = journal->j_transaction_sequence++;
transaction->t_expires = jiffies + journal->j_commit_interval;
a79: 89 41 50 mov %eax,0x50(%ecx)
spin_lock_init(&transaction->t_handle_lock);
/* Set up the commit timer for the new transaction. */
journal->j_commit_timer.expires =
round_jiffies_up(transaction->t_expires);
a7c: e8 fc ff ff ff call a7d <start_this_handle+0x13d>
transaction->t_tid = journal->j_transaction_sequence++;
transaction->t_expires = jiffies + journal->j_commit_interval;
spin_lock_init(&transaction->t_handle_lock);
/* Set up the commit timer for the new transaction. */
journal->j_commit_timer.expires =
a81: 89 86 fc 00 00 00 mov %eax,0xfc(%esi)
round_jiffies_up(transaction->t_expires);
add_timer(&journal->j_commit_timer);
a87: 8b 45 d0 mov -0x30(%ebp),%eax
a8a: e8 fc ff ff ff call a8b <start_this_handle+0x14b>
J_ASSERT(journal->j_running_transaction == NULL);
a8f: 8b 5e 30 mov 0x30(%esi),%ebx
a92: 85 db test %ebx,%ebx
a94: 0f 85 b7 01 00 00 jne c51 <start_this_handle+0x311>
journal->j_running_transaction = transaction;
a9a: 8b 45 dc mov -0x24(%ebp),%eax
a9d: c7 45 dc 00 00 00 00 movl $0x0,-0x24(%ebp)
aa4: 89 c3 mov %eax,%ebx
aa6: 89 46 30 mov %eax,0x30(%esi)
/*
* If the current transaction is locked down for commit, wait for the
* lock to be released.
*/
if (transaction->t_state == T_LOCKED) {
aa9: 83 7b 08 01 cmpl $0x1,0x8(%ebx)
aad: 0f 85 07 ff ff ff jne 9ba <start_this_handle+0x7a>
ab3: 90 nop
ab4: 8d 74 26 00 lea 0x0(%esi,%eiz,1),%esi
DEFINE_WAIT(wait);
ab8: 8b 55 c0 mov -0x40(%ebp),%edx
abb: 8d 4d ec lea -0x14(%ebp),%ecx
prepare_to_wait(&journal->j_wait_transaction_locked,
abe: 8b 45 cc mov -0x34(%ebp),%eax
/*
* If the current transaction is locked down for commit, wait for the
* lock to be released.
*/
if (transaction->t_state == T_LOCKED) {
DEFINE_WAIT(wait);
ac1: 89 4d ec mov %ecx,-0x14(%ebp)
ac4: 89 4d f0 mov %ecx,-0x10(%ebp)
prepare_to_wait(&journal->j_wait_transaction_locked,
ac7: b9 02 00 00 00 mov $0x2,%ecx
/*
* If the current transaction is locked down for commit, wait for the
* lock to be released.
*/
if (transaction->t_state == T_LOCKED) {
DEFINE_WAIT(wait);
acc: 89 55 e4 mov %edx,-0x1c(%ebp)
prepare_to_wait(&journal->j_wait_transaction_locked,
acf: 8d 55 e0 lea -0x20(%ebp),%edx
/*
* If the current transaction is locked down for commit, wait for the
* lock to be released.
*/
if (transaction->t_state == T_LOCKED) {
DEFINE_WAIT(wait);
ad2: c7 45 e0 00 00 00 00 movl $0x0,-0x20(%ebp)
ad9: c7 45 e8 00 00 00 00 movl $0x0,-0x18(%ebp)
prepare_to_wait(&journal->j_wait_transaction_locked,
ae0: e8 fc ff ff ff call ae1 <start_this_handle+0x1a1>
ae5: 8b 45 d4 mov -0x2c(%ebp),%eax
ae8: ff 15 14 00 00 00 call *0x14
spin_unlock(&transaction->t_handle_lock);
prepare_to_wait(&journal->j_wait_transaction_locked, &wait,
TASK_UNINTERRUPTIBLE);
__log_start_commit(journal, transaction->t_tid);
spin_unlock(&journal->j_state_lock);
schedule();
aee: e8 fc ff ff ff call aef <start_this_handle+0x1af>
finish_wait(&journal->j_wait_transaction_locked, &wait);
af3: 8b 45 cc mov -0x34(%ebp),%eax
af6: 8d 55 e0 lea -0x20(%ebp),%edx
af9: e8 fc ff ff ff call afa <start_this_handle+0x1ba>
afe: e9 98 fe ff ff jmp 99b <start_this_handle+0x5b>
b03: 90 nop
b04: 8d 74 26 00 lea 0x0(%esi,%eiz,1),%esi
b08: 8b 45 d4 mov -0x2c(%ebp),%eax
b0b: ff 15 14 00 00 00 call *0x14
b11: bb e2 ff ff ff mov $0xffffffe2,%ebx
spin_unlock(&transaction->t_handle_lock);
spin_unlock(&journal->j_state_lock);
lock_map_acquire(&handle->h_lockdep_map);
out:
if (unlikely(new_transaction)) /* It's usually NULL */
b16: 8b 4d dc mov -0x24(%ebp),%ecx
b19: 85 c9 test %ecx,%ecx
b1b: 0f 85 66 01 00 00 jne c87 <start_this_handle+0x347>
kfree(new_transaction);
return ret;
}
b21: 83 c4 48 add $0x48,%esp
b24: 89 d8 mov %ebx,%eax
b26: 5b pop %ebx
b27: 5e pop %esi
b28: 5f pop %edi
b29: 5d pop %ebp
b2a: c3 ret
b2b: 90 nop
b2c: 8d 74 26 00 lea 0x0(%esi,%eiz,1),%esi
b30: 8b 45 d4 mov -0x2c(%ebp),%eax
b33: ff 15 14 00 00 00 call *0x14
}
/* Wait on the journal's transaction barrier if necessary */
if (journal->j_barrier_count) {
spin_unlock(&journal->j_state_lock);
wait_event(journal->j_wait_transaction_locked,
b39: 8b 56 18 mov 0x18(%esi),%edx
b3c: 85 d2 test %edx,%edx
b3e: 0f 84 57 fe ff ff je 99b <start_this_handle+0x5b>
b44: 8b 55 c8 mov -0x38(%ebp),%edx
b47: 8d 4d ec lea -0x14(%ebp),%ecx
b4a: c7 45 e0 00 00 00 00 movl $0x0,-0x20(%ebp)
b51: 8b 5d cc mov -0x34(%ebp),%ebx
b54: c7 45 e8 00 00 00 00 movl $0x0,-0x18(%ebp)
b5b: 89 4d ec mov %ecx,-0x14(%ebp)
b5e: 89 55 e4 mov %edx,-0x1c(%ebp)
b61: 89 4d f0 mov %ecx,-0x10(%ebp)
b64: eb 07 jmp b6d <start_this_handle+0x22d>
b66: 66 90 xchg %ax,%ax
b68: e8 fc ff ff ff call b69 <start_this_handle+0x229>
b6d: 89 d8 mov %ebx,%eax
b6f: b9 02 00 00 00 mov $0x2,%ecx
b74: 8d 55 e0 lea -0x20(%ebp),%edx
b77: e8 fc ff ff ff call b78 <start_this_handle+0x238>
b7c: 8b 46 18 mov 0x18(%esi),%eax
b7f: 85 c0 test %eax,%eax
b81: 75 e5 jne b68 <start_this_handle+0x228>
prepare_to_wait(&journal->j_wait_transaction_locked, &wait,
TASK_UNINTERRUPTIBLE);
__log_start_commit(journal, transaction->t_tid);
spin_unlock(&journal->j_state_lock);
schedule();
finish_wait(&journal->j_wait_transaction_locked, &wait);
b83: 8b 45 cc mov -0x34(%ebp),%eax
b86: 8d 55 e0 lea -0x20(%ebp),%edx
b89: e8 fc ff ff ff call b8a <start_this_handle+0x24a>
b8e: e9 08 fe ff ff jmp 99b <start_this_handle+0x5b>
b93: 90 nop
b94: 8d 74 26 00 lea 0x0(%esi,%eiz,1),%esi
/*
* If the current transaction is already too large, then start
* to commit it: we can then go back and attach this handle to
* a new transaction.
*/
DEFINE_WAIT(wait);
b98: 8b 55 c8 mov -0x38(%ebp),%edx
b9b: 8d 4d ec lea -0x14(%ebp),%ecx
b9e: 89 f8 mov %edi,%eax
ba0: c7 45 e0 00 00 00 00 movl $0x0,-0x20(%ebp)
ba7: c7 45 e8 00 00 00 00 movl $0x0,-0x18(%ebp)
bae: 89 4d ec mov %ecx,-0x14(%ebp)
bb1: 89 55 e4 mov %edx,-0x1c(%ebp)
bb4: 89 4d f0 mov %ecx,-0x10(%ebp)
bb7: ff 15 14 00 00 00 call *0x14
jbd_debug(2, "Handle %p starting new commit...\n", handle);
spin_unlock(&transaction->t_handle_lock);
prepare_to_wait(&journal->j_wait_transaction_locked, &wait,
bbd: 8b 45 cc mov -0x34(%ebp),%eax
bc0: 8d 55 e0 lea -0x20(%ebp),%edx
bc3: b9 02 00 00 00 mov $0x2,%ecx
bc8: e8 fc ff ff ff call bc9 <start_this_handle+0x289>
TASK_UNINTERRUPTIBLE);
__log_start_commit(journal, transaction->t_tid);
bcd: 8b 53 04 mov 0x4(%ebx),%edx
bd0: 89 f0 mov %esi,%eax
bd2: e8 fc ff ff ff call bd3 <start_this_handle+0x293>
bd7: e9 09 ff ff ff jmp ae5 <start_this_handle+0x1a5>
bdc: 8d 74 26 00 lea 0x0(%esi,%eiz,1),%esi
}
/* OK, account for the buffers that this operation expects to
* use and add the handle to the running transaction. */
handle->h_transaction = transaction;
be0: 8b 55 c4 mov -0x3c(%ebp),%edx
be3: 89 f8 mov %edi,%eax
be5: 89 1a mov %ebx,(%edx)
transaction->t_outstanding_credits += nblocks;
be7: 8b 4d d8 mov -0x28(%ebp),%ecx
bea: 01 4b 44 add %ecx,0x44(%ebx)
transaction->t_updates++;
bed: 83 43 40 01 addl $0x1,0x40(%ebx)
transaction->t_handle_count++;
bf1: 83 43 5c 01 addl $0x1,0x5c(%ebx)
bf5: ff 15 14 00 00 00 call *0x14
bfb: 8b 45 d4 mov -0x2c(%ebp),%eax
bfe: ff 15 14 00 00 00 call *0x14
c04: 31 db xor %ebx,%ebx
c06: e9 0b ff ff ff jmp b16 <start_this_handle+0x1d6>
c0b: 8b 45 d4 mov -0x2c(%ebp),%eax
c0e: ff 15 14 00 00 00 call *0x14
c14: e9 70 fd ff ff jmp 989 <start_this_handle+0x49>
extern void *kmem_cache_alloc_notrace(struct kmem_cache *s, gfp_t gfpflags);
#else
static __always_inline void *
kmem_cache_alloc_notrace(struct kmem_cache *s, gfp_t gfpflags)
{
return kmem_cache_alloc(s, gfpflags);
c19: ba 50 88 00 00 mov $0x8850,%edx
c1e: b8 7c 04 00 00 mov $0x47c,%eax
c23: e8 fc ff ff ff call c24 <start_this_handle+0x2e4>
if (!s)
return ZERO_SIZE_PTR;
ret = kmem_cache_alloc_notrace(s, flags);
trace_kmalloc(_THIS_IP_, ret, size, s->size, flags);
c28: 8b 15 80 04 00 00 mov 0x480,%edx
{(unsigned long)__GFP_THISNODE, "GFP_THISNODE"}, \
{(unsigned long)__GFP_RECLAIMABLE, "GFP_RECLAIMABLE"}, \
{(unsigned long)__GFP_MOVABLE, "GFP_MOVABLE"} \
) : "GFP_NOWAIT"
TRACE_EVENT(kmalloc,
c2e: 83 3d 04 00 00 00 00 cmpl $0x0,0x4
c35: 89 55 bc mov %edx,-0x44(%ebp)
extern void *kmem_cache_alloc_notrace(struct kmem_cache *s, gfp_t gfpflags);
#else
static __always_inline void *
kmem_cache_alloc_notrace(struct kmem_cache *s, gfp_t gfpflags)
{
return kmem_cache_alloc(s, gfpflags);
c38: 89 45 dc mov %eax,-0x24(%ebp)
c3b: 75 58 jne c95 <start_this_handle+0x355>
alloc_transaction:
if (!journal->j_running_transaction) {
new_transaction = kzalloc(sizeof(*new_transaction),
GFP_NOFS|__GFP_NOFAIL);
if (!new_transaction) {
c3d: 83 7d dc 00 cmpl $0x0,-0x24(%ebp)
c41: 0f 85 54 fd ff ff jne 99b <start_this_handle+0x5b>
spin_unlock(&journal->j_state_lock);
lock_map_acquire(&handle->h_lockdep_map);
out:
if (unlikely(new_transaction)) /* It's usually NULL */
kfree(new_transaction);
c47: bb f4 ff ff ff mov $0xfffffff4,%ebx
c4c: e9 d0 fe ff ff jmp b21 <start_this_handle+0x1e1>
/* Set up the commit timer for the new transaction. */
journal->j_commit_timer.expires =
round_jiffies_up(transaction->t_expires);
add_timer(&journal->j_commit_timer);
J_ASSERT(journal->j_running_transaction == NULL);
c51: 0f 0b ud2a
c53: eb fe jmp c53 <start_this_handle+0x313>
int nblocks = handle->h_buffer_credits;
transaction_t *new_transaction = NULL;
int ret = 0;
if (nblocks > journal->j_max_transaction_buffers) {
printk(KERN_ERR "JBD: %s wants too many credits (%d > %d)\n",
c55: 8b 4d d8 mov -0x28(%ebp),%ecx
c58: bb e4 ff ff ff mov $0xffffffe4,%ebx
c5d: 64 8b 15 00 00 00 00 mov %fs:0x0,%edx
c64: 89 44 24 0c mov %eax,0xc(%esp)
c68: 8d 82 0c 03 00 00 lea 0x30c(%edx),%eax
c6e: 89 44 24 04 mov %eax,0x4(%esp)
c72: 89 4c 24 08 mov %ecx,0x8(%esp)
c76: c7 04 24 84 00 00 00 movl $0x84,(%esp)
c7d: e8 fc ff ff ff call c7e <start_this_handle+0x33e>
current->comm, nblocks,
journal->j_max_transaction_buffers);
ret = -ENOSPC;
goto out;
c82: e9 9a fe ff ff jmp b21 <start_this_handle+0x1e1>
spin_unlock(&journal->j_state_lock);
lock_map_acquire(&handle->h_lockdep_map);
out:
if (unlikely(new_transaction)) /* It's usually NULL */
kfree(new_transaction);
c87: 8b 45 dc mov -0x24(%ebp),%eax
c8a: e8 fc ff ff ff call c8b <start_this_handle+0x34b>
c8f: 90 nop
c90: e9 8c fe ff ff jmp b21 <start_this_handle+0x1e1>
c95: 8b 1d 10 00 00 00 mov 0x10,%ebx
c9b: 85 db test %ebx,%ebx
c9d: 74 9e je c3d <start_this_handle+0x2fd>
c9f: 8b 3b mov (%ebx),%edi
ca1: 8b 4d bc mov -0x44(%ebp),%ecx
ca4: 83 c3 04 add $0x4,%ebx
ca7: b8 19 0c 00 00 mov $0xc19,%eax
cac: 8b 55 dc mov -0x24(%ebp),%edx
caf: c7 44 24 04 50 88 00 movl $0x8850,0x4(%esp)
cb6: 00
cb7: 89 0c 24 mov %ecx,(%esp)
cba: b9 64 00 00 00 mov $0x64,%ecx
cbf: ff d7 call *%edi
cc1: 8b 3b mov (%ebx),%edi
cc3: 85 ff test %edi,%edi
cc5: 75 da jne ca1 <start_this_handle+0x361>
cc7: e9 71 ff ff ff jmp c3d <start_this_handle+0x2fd>
ccc: 8d 74 26 00 lea 0x0(%esi,%eiz,1),%esi
--
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