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path: root/fs/jbd2/transaction.c
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Diffstat (limited to 'fs/jbd2/transaction.c')
-rw-r--r--fs/jbd2/transaction.c244
1 files changed, 122 insertions, 122 deletions
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
index e1b3c8af4d1..149957bef90 100644
--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -19,7 +19,7 @@
#include <linux/time.h>
#include <linux/fs.h>
-#include <linux/jbd.h>
+#include <linux/jbd2.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/timer.h>
@@ -28,7 +28,7 @@
#include <linux/highmem.h>
/*
- * get_transaction: obtain a new transaction_t object.
+ * jbd2_get_transaction: obtain a new transaction_t object.
*
* Simply allocate and initialise a new transaction. Create it in
* RUNNING state and add it to the current journal (which should not
@@ -44,7 +44,7 @@
*/
static transaction_t *
-get_transaction(journal_t *journal, transaction_t *transaction)
+jbd2_get_transaction(journal_t *journal, transaction_t *transaction)
{
transaction->t_journal = journal;
transaction->t_state = T_RUNNING;
@@ -115,7 +115,7 @@ repeat:
spin_lock(&journal->j_state_lock);
repeat_locked:
if (is_journal_aborted(journal) ||
- (journal->j_errno != 0 && !(journal->j_flags & JFS_ACK_ERR))) {
+ (journal->j_errno != 0 && !(journal->j_flags & JBD2_ACK_ERR))) {
spin_unlock(&journal->j_state_lock);
ret = -EROFS;
goto out;
@@ -134,7 +134,7 @@ repeat_locked:
spin_unlock(&journal->j_state_lock);
goto alloc_transaction;
}
- get_transaction(journal, new_transaction);
+ jbd2_get_transaction(journal, new_transaction);
new_transaction = NULL;
}
@@ -175,7 +175,7 @@ repeat_locked:
spin_unlock(&transaction->t_handle_lock);
prepare_to_wait(&journal->j_wait_transaction_locked, &wait,
TASK_UNINTERRUPTIBLE);
- __log_start_commit(journal, transaction->t_tid);
+ __jbd2_log_start_commit(journal, transaction->t_tid);
spin_unlock(&journal->j_state_lock);
schedule();
finish_wait(&journal->j_wait_transaction_locked, &wait);
@@ -205,12 +205,12 @@ repeat_locked:
* committing_transaction->t_outstanding_credits plus "enough" for
* the log control blocks.
* Also, this test is inconsitent with the matching one in
- * journal_extend().
+ * jbd2_journal_extend().
*/
- if (__log_space_left(journal) < jbd_space_needed(journal)) {
+ if (__jbd2_log_space_left(journal) < jbd_space_needed(journal)) {
jbd_debug(2, "Handle %p waiting for checkpoint...\n", handle);
spin_unlock(&transaction->t_handle_lock);
- __log_wait_for_space(journal);
+ __jbd2_log_wait_for_space(journal);
goto repeat_locked;
}
@@ -223,7 +223,7 @@ repeat_locked:
transaction->t_handle_count++;
jbd_debug(4, "Handle %p given %d credits (total %d, free %d)\n",
handle, nblocks, transaction->t_outstanding_credits,
- __log_space_left(journal));
+ __jbd2_log_space_left(journal));
spin_unlock(&transaction->t_handle_lock);
spin_unlock(&journal->j_state_lock);
out:
@@ -246,7 +246,7 @@ static handle_t *new_handle(int nblocks)
}
/**
- * handle_t *journal_start() - Obtain a new handle.
+ * handle_t *jbd2_journal_start() - Obtain a new handle.
* @journal: Journal to start transaction on.
* @nblocks: number of block buffer we might modify
*
@@ -259,7 +259,7 @@ static handle_t *new_handle(int nblocks)
*
* Return a pointer to a newly allocated handle, or NULL on failure
*/
-handle_t *journal_start(journal_t *journal, int nblocks)
+handle_t *jbd2_journal_start(journal_t *journal, int nblocks)
{
handle_t *handle = journal_current_handle();
int err;
@@ -289,7 +289,7 @@ handle_t *journal_start(journal_t *journal, int nblocks)
}
/**
- * int journal_extend() - extend buffer credits.
+ * int jbd2_journal_extend() - extend buffer credits.
* @handle: handle to 'extend'
* @nblocks: nr blocks to try to extend by.
*
@@ -298,7 +298,7 @@ handle_t *journal_start(journal_t *journal, int nblocks)
* a credit for a number of buffer modications in advance, but can
* extend its credit if it needs more.
*
- * journal_extend tries to give the running handle more buffer credits.
+ * jbd2_journal_extend tries to give the running handle more buffer credits.
* It does not guarantee that allocation - this is a best-effort only.
* The calling process MUST be able to deal cleanly with a failure to
* extend here.
@@ -308,7 +308,7 @@ handle_t *journal_start(journal_t *journal, int nblocks)
* return code < 0 implies an error
* return code > 0 implies normal transaction-full status.
*/
-int journal_extend(handle_t *handle, int nblocks)
+int jbd2_journal_extend(handle_t *handle, int nblocks)
{
transaction_t *transaction = handle->h_transaction;
journal_t *journal = transaction->t_journal;
@@ -339,7 +339,7 @@ int journal_extend(handle_t *handle, int nblocks)
goto unlock;
}
- if (wanted > __log_space_left(journal)) {
+ if (wanted > __jbd2_log_space_left(journal)) {
jbd_debug(3, "denied handle %p %d blocks: "
"insufficient log space\n", handle, nblocks);
goto unlock;
@@ -360,21 +360,21 @@ out:
/**
- * int journal_restart() - restart a handle .
+ * int jbd2_journal_restart() - restart a handle .
* @handle: handle to restart
* @nblocks: nr credits requested
*
* Restart a handle for a multi-transaction filesystem
* operation.
*
- * If the journal_extend() call above fails to grant new buffer credits
- * to a running handle, a call to journal_restart will commit the
+ * If the jbd2_journal_extend() call above fails to grant new buffer credits
+ * to a running handle, a call to jbd2_journal_restart will commit the
* handle's transaction so far and reattach the handle to a new
* transaction capabable of guaranteeing the requested number of
* credits.
*/
-int journal_restart(handle_t *handle, int nblocks)
+int jbd2_journal_restart(handle_t *handle, int nblocks)
{
transaction_t *transaction = handle->h_transaction;
journal_t *journal = transaction->t_journal;
@@ -402,7 +402,7 @@ int journal_restart(handle_t *handle, int nblocks)
spin_unlock(&transaction->t_handle_lock);
jbd_debug(2, "restarting handle %p\n", handle);
- __log_start_commit(journal, transaction->t_tid);
+ __jbd2_log_start_commit(journal, transaction->t_tid);
spin_unlock(&journal->j_state_lock);
handle->h_buffer_credits = nblocks;
@@ -412,7 +412,7 @@ int journal_restart(handle_t *handle, int nblocks)
/**
- * void journal_lock_updates () - establish a transaction barrier.
+ * void jbd2_journal_lock_updates () - establish a transaction barrier.
* @journal: Journal to establish a barrier on.
*
* This locks out any further updates from being started, and blocks
@@ -421,7 +421,7 @@ int journal_restart(handle_t *handle, int nblocks)
*
* The journal lock should not be held on entry.
*/
-void journal_lock_updates(journal_t *journal)
+void jbd2_journal_lock_updates(journal_t *journal)
{
DEFINE_WAIT(wait);
@@ -452,7 +452,7 @@ void journal_lock_updates(journal_t *journal)
/*
* We have now established a barrier against other normal updates, but
- * we also need to barrier against other journal_lock_updates() calls
+ * we also need to barrier against other jbd2_journal_lock_updates() calls
* to make sure that we serialise special journal-locked operations
* too.
*/
@@ -460,14 +460,14 @@ void journal_lock_updates(journal_t *journal)
}
/**
- * void journal_unlock_updates (journal_t* journal) - release barrier
+ * void jbd2_journal_unlock_updates (journal_t* journal) - release barrier
* @journal: Journal to release the barrier on.
*
- * Release a transaction barrier obtained with journal_lock_updates().
+ * Release a transaction barrier obtained with jbd2_journal_lock_updates().
*
* Should be called without the journal lock held.
*/
-void journal_unlock_updates (journal_t *journal)
+void jbd2_journal_unlock_updates (journal_t *journal)
{
J_ASSERT(journal->j_barrier_count != 0);
@@ -667,7 +667,7 @@ repeat:
JBUFFER_TRACE(jh, "allocate memory for buffer");
jbd_unlock_bh_state(bh);
frozen_buffer =
- jbd_slab_alloc(jh2bh(jh)->b_size,
+ jbd2_slab_alloc(jh2bh(jh)->b_size,
GFP_NOFS);
if (!frozen_buffer) {
printk(KERN_EMERG
@@ -699,7 +699,7 @@ repeat:
jh->b_transaction = transaction;
JBUFFER_TRACE(jh, "file as BJ_Reserved");
spin_lock(&journal->j_list_lock);
- __journal_file_buffer(jh, transaction, BJ_Reserved);
+ __jbd2_journal_file_buffer(jh, transaction, BJ_Reserved);
spin_unlock(&journal->j_list_lock);
}
@@ -723,18 +723,18 @@ done:
* If we are about to journal a buffer, then any revoke pending on it is
* no longer valid
*/
- journal_cancel_revoke(handle, jh);
+ jbd2_journal_cancel_revoke(handle, jh);
out:
if (unlikely(frozen_buffer)) /* It's usually NULL */
- jbd_slab_free(frozen_buffer, bh->b_size);
+ jbd2_slab_free(frozen_buffer, bh->b_size);
JBUFFER_TRACE(jh, "exit");
return error;
}
/**
- * int journal_get_write_access() - notify intent to modify a buffer for metadata (not data) update.
+ * int jbd2_journal_get_write_access() - notify intent to modify a buffer for metadata (not data) update.
* @handle: transaction to add buffer modifications to
* @bh: bh to be used for metadata writes
* @credits: variable that will receive credits for the buffer
@@ -745,16 +745,16 @@ out:
* because we're write()ing a buffer which is also part of a shared mapping.
*/
-int journal_get_write_access(handle_t *handle, struct buffer_head *bh)
+int jbd2_journal_get_write_access(handle_t *handle, struct buffer_head *bh)
{
- struct journal_head *jh = journal_add_journal_head(bh);
+ struct journal_head *jh = jbd2_journal_add_journal_head(bh);
int rc;
/* We do not want to get caught playing with fields which the
* log thread also manipulates. Make sure that the buffer
* completes any outstanding IO before proceeding. */
rc = do_get_write_access(handle, jh, 0);
- journal_put_journal_head(jh);
+ jbd2_journal_put_journal_head(jh);
return rc;
}
@@ -772,17 +772,17 @@ int journal_get_write_access(handle_t *handle, struct buffer_head *bh)
* unlocked buffer beforehand. */
/**
- * int journal_get_create_access () - notify intent to use newly created bh
+ * int jbd2_journal_get_create_access () - notify intent to use newly created bh
* @handle: transaction to new buffer to
* @bh: new buffer.
*
* Call this if you create a new bh.
*/
-int journal_get_create_access(handle_t *handle, struct buffer_head *bh)
+int jbd2_journal_get_create_access(handle_t *handle, struct buffer_head *bh)
{
transaction_t *transaction = handle->h_transaction;
journal_t *journal = transaction->t_journal;
- struct journal_head *jh = journal_add_journal_head(bh);
+ struct journal_head *jh = jbd2_journal_add_journal_head(bh);
int err;
jbd_debug(5, "journal_head %p\n", jh);
@@ -812,7 +812,7 @@ int journal_get_create_access(handle_t *handle, struct buffer_head *bh)
if (jh->b_transaction == NULL) {
jh->b_transaction = transaction;
JBUFFER_TRACE(jh, "file as BJ_Reserved");
- __journal_file_buffer(jh, transaction, BJ_Reserved);
+ __jbd2_journal_file_buffer(jh, transaction, BJ_Reserved);
} else if (jh->b_transaction == journal->j_committing_transaction) {
JBUFFER_TRACE(jh, "set next transaction");
jh->b_next_transaction = transaction;
@@ -828,14 +828,14 @@ int journal_get_create_access(handle_t *handle, struct buffer_head *bh)
* which hits an assertion error.
*/
JBUFFER_TRACE(jh, "cancelling revoke");
- journal_cancel_revoke(handle, jh);
- journal_put_journal_head(jh);
+ jbd2_journal_cancel_revoke(handle, jh);
+ jbd2_journal_put_journal_head(jh);
out:
return err;
}
/**
- * int journal_get_undo_access() - Notify intent to modify metadata with
+ * int jbd2_journal_get_undo_access() - Notify intent to modify metadata with
* non-rewindable consequences
* @handle: transaction
* @bh: buffer to undo
@@ -848,7 +848,7 @@ out:
* since if we overwrote that space we would make the delete
* un-rewindable in case of a crash.
*
- * To deal with that, journal_get_undo_access requests write access to a
+ * To deal with that, jbd2_journal_get_undo_access requests write access to a
* buffer for parts of non-rewindable operations such as delete
* operations on the bitmaps. The journaling code must keep a copy of
* the buffer's contents prior to the undo_access call until such time
@@ -861,10 +861,10 @@ out:
*
* Returns error number or 0 on success.
*/
-int journal_get_undo_access(handle_t *handle, struct buffer_head *bh)
+int jbd2_journal_get_undo_access(handle_t *handle, struct buffer_head *bh)
{
int err;
- struct journal_head *jh = journal_add_journal_head(bh);
+ struct journal_head *jh = jbd2_journal_add_journal_head(bh);
char *committed_data = NULL;
JBUFFER_TRACE(jh, "entry");
@@ -880,7 +880,7 @@ int journal_get_undo_access(handle_t *handle, struct buffer_head *bh)
repeat:
if (!jh->b_committed_data) {
- committed_data = jbd_slab_alloc(jh2bh(jh)->b_size, GFP_NOFS);
+ committed_data = jbd2_slab_alloc(jh2bh(jh)->b_size, GFP_NOFS);
if (!committed_data) {
printk(KERN_EMERG "%s: No memory for committed data\n",
__FUNCTION__);
@@ -905,14 +905,14 @@ repeat:
}
jbd_unlock_bh_state(bh);
out:
- journal_put_journal_head(jh);
+ jbd2_journal_put_journal_head(jh);
if (unlikely(committed_data))
- jbd_slab_free(committed_data, bh->b_size);
+ jbd2_slab_free(committed_data, bh->b_size);
return err;
}
/**
- * int journal_dirty_data() - mark a buffer as containing dirty data which
+ * int jbd2_journal_dirty_data() - mark a buffer as containing dirty data which
* needs to be flushed before we can commit the
* current transaction.
* @handle: transaction
@@ -923,10 +923,10 @@ out:
*
* Returns error number or 0 on success.
*
- * journal_dirty_data() can be called via page_launder->ext3_writepage
+ * jbd2_journal_dirty_data() can be called via page_launder->ext3_writepage
* by kswapd.
*/
-int journal_dirty_data(handle_t *handle, struct buffer_head *bh)
+int jbd2_journal_dirty_data(handle_t *handle, struct buffer_head *bh)
{
journal_t *journal = handle->h_transaction->t_journal;
int need_brelse = 0;
@@ -935,7 +935,7 @@ int journal_dirty_data(handle_t *handle, struct buffer_head *bh)
if (is_handle_aborted(handle))
return 0;
- jh = journal_add_journal_head(bh);
+ jh = jbd2_journal_add_journal_head(bh);
JBUFFER_TRACE(jh, "entry");
/*
@@ -984,7 +984,7 @@ int journal_dirty_data(handle_t *handle, struct buffer_head *bh)
* And while we're in that state, someone does a
* writepage() in an attempt to pageout the same area
* of the file via a shared mapping. At present that
- * calls journal_dirty_data(), and we get right here.
+ * calls jbd2_journal_dirty_data(), and we get right here.
* It may be too late to journal the data. Simply
* falling through to the next test will suffice: the
* data will be dirty and wil be checkpointed. The
@@ -1035,7 +1035,7 @@ int journal_dirty_data(handle_t *handle, struct buffer_head *bh)
/* journal_clean_data_list() may have got there first */
if (jh->b_transaction != NULL) {
JBUFFER_TRACE(jh, "unfile from commit");
- __journal_temp_unlink_buffer(jh);
+ __jbd2_journal_temp_unlink_buffer(jh);
/* It still points to the committing
* transaction; move it to this one so
* that the refile assert checks are
@@ -1054,15 +1054,15 @@ int journal_dirty_data(handle_t *handle, struct buffer_head *bh)
if (jh->b_jlist != BJ_SyncData && jh->b_jlist != BJ_Locked) {
JBUFFER_TRACE(jh, "not on correct data list: unfile");
J_ASSERT_JH(jh, jh->b_jlist != BJ_Shadow);
- __journal_temp_unlink_buffer(jh);
+ __jbd2_journal_temp_unlink_buffer(jh);
jh->b_transaction = handle->h_transaction;
JBUFFER_TRACE(jh, "file as data");
- __journal_file_buffer(jh, handle->h_transaction,
+ __jbd2_journal_file_buffer(jh, handle->h_transaction,
BJ_SyncData);
}
} else {
JBUFFER_TRACE(jh, "not on a transaction");
- __journal_file_buffer(jh, handle->h_transaction, BJ_SyncData);
+ __jbd2_journal_file_buffer(jh, handle->h_transaction, BJ_SyncData);
}
no_journal:
spin_unlock(&journal->j_list_lock);
@@ -1072,12 +1072,12 @@ no_journal:
__brelse(bh);
}
JBUFFER_TRACE(jh, "exit");
- journal_put_journal_head(jh);
+ jbd2_journal_put_journal_head(jh);
return 0;
}
/**
- * int journal_dirty_metadata() - mark a buffer as containing dirty metadata
+ * int jbd2_journal_dirty_metadata() - mark a buffer as containing dirty metadata
* @handle: transaction to add buffer to.
* @bh: buffer to mark
*
@@ -1095,7 +1095,7 @@ no_journal:
* buffer: that only gets done when the old transaction finally
* completes its commit.
*/
-int journal_dirty_metadata(handle_t *handle, struct buffer_head *bh)
+int jbd2_journal_dirty_metadata(handle_t *handle, struct buffer_head *bh)
{
transaction_t *transaction = handle->h_transaction;
journal_t *journal = transaction->t_journal;
@@ -1156,7 +1156,7 @@ int journal_dirty_metadata(handle_t *handle, struct buffer_head *bh)
JBUFFER_TRACE(jh, "file as BJ_Metadata");
spin_lock(&journal->j_list_lock);
- __journal_file_buffer(jh, handle->h_transaction, BJ_Metadata);
+ __jbd2_journal_file_buffer(jh, handle->h_transaction, BJ_Metadata);
spin_unlock(&journal->j_list_lock);
out_unlock_bh:
jbd_unlock_bh_state(bh);
@@ -1166,18 +1166,18 @@ out:
}
/*
- * journal_release_buffer: undo a get_write_access without any buffer
+ * jbd2_journal_release_buffer: undo a get_write_access without any buffer
* updates, if the update decided in the end that it didn't need access.
*
*/
void
-journal_release_buffer(handle_t *handle, struct buffer_head *bh)
+jbd2_journal_release_buffer(handle_t *handle, struct buffer_head *bh)
{
BUFFER_TRACE(bh, "entry");
}
/**
- * void journal_forget() - bforget() for potentially-journaled buffers.
+ * void jbd2_journal_forget() - bforget() for potentially-journaled buffers.
* @handle: transaction handle
* @bh: bh to 'forget'
*
@@ -1193,7 +1193,7 @@ journal_release_buffer(handle_t *handle, struct buffer_head *bh)
* Allow this call even if the handle has aborted --- it may be part of
* the caller's cleanup after an abort.
*/
-int journal_forget (handle_t *handle, struct buffer_head *bh)
+int jbd2_journal_forget (handle_t *handle, struct buffer_head *bh)
{
transaction_t *transaction = handle->h_transaction;
journal_t *journal = transaction->t_journal;
@@ -1250,11 +1250,11 @@ int journal_forget (handle_t *handle, struct buffer_head *bh)
*/
if (jh->b_cp_transaction) {
- __journal_temp_unlink_buffer(jh);
- __journal_file_buffer(jh, transaction, BJ_Forget);
+ __jbd2_journal_temp_unlink_buffer(jh);
+ __jbd2_journal_file_buffer(jh, transaction, BJ_Forget);
} else {
- __journal_unfile_buffer(jh);
- journal_remove_journal_head(bh);
+ __jbd2_journal_unfile_buffer(jh);
+ jbd2_journal_remove_journal_head(bh);
__brelse(bh);
if (!buffer_jbd(bh)) {
spin_unlock(&journal->j_list_lock);
@@ -1292,7 +1292,7 @@ drop:
}
/**
- * int journal_stop() - complete a transaction
+ * int jbd2_journal_stop() - complete a transaction
* @handle: tranaction to complete.
*
* All done for a particular handle.
@@ -1302,12 +1302,12 @@ drop:
* complication is that we need to start a commit operation if the
* filesystem is marked for synchronous update.
*
- * journal_stop itself will not usually return an error, but it may
+ * jbd2_journal_stop itself will not usually return an error, but it may
* do so in unusual circumstances. In particular, expect it to
- * return -EIO if a journal_abort has been executed since the
+ * return -EIO if a jbd2_journal_abort has been executed since the
* transaction began.
*/
-int journal_stop(handle_t *handle)
+int jbd2_journal_stop(handle_t *handle)
{
transaction_t *transaction = handle->h_transaction;
journal_t *journal = transaction->t_journal;
@@ -1383,15 +1383,15 @@ int journal_stop(handle_t *handle)
jbd_debug(2, "transaction too old, requesting commit for "
"handle %p\n", handle);
/* This is non-blocking */
- __log_start_commit(journal, transaction->t_tid);
+ __jbd2_log_start_commit(journal, transaction->t_tid);
spin_unlock(&journal->j_state_lock);
/*
- * Special case: JFS_SYNC synchronous updates require us
+ * Special case: JBD2_SYNC synchronous updates require us
* to wait for the commit to complete.
*/
if (handle->h_sync && !(current->flags & PF_MEMALLOC))
- err = log_wait_commit(journal, tid);
+ err = jbd2_log_wait_commit(journal, tid);
} else {
spin_unlock(&transaction->t_handle_lock);
spin_unlock(&journal->j_state_lock);
@@ -1401,24 +1401,24 @@ int journal_stop(handle_t *handle)
return err;
}
-/**int journal_force_commit() - force any uncommitted transactions
+/**int jbd2_journal_force_commit() - force any uncommitted transactions
* @journal: journal to force
*
* For synchronous operations: force any uncommitted transactions
* to disk. May seem kludgy, but it reuses all the handle batching
* code in a very simple manner.
*/
-int journal_force_commit(journal_t *journal)
+int jbd2_journal_force_commit(journal_t *journal)
{
handle_t *handle;
int ret;
- handle = journal_start(journal, 1);
+ handle = jbd2_journal_start(journal, 1);
if (IS_ERR(handle)) {
ret = PTR_ERR(handle);
} else {
handle->h_sync = 1;
- ret = journal_stop(handle);
+ ret = jbd2_journal_stop(handle);
}
return ret;
}
@@ -1486,7 +1486,7 @@ __blist_del_buffer(struct journal_head **list, struct journal_head *jh)
*
* Called under j_list_lock. The journal may not be locked.
*/
-void __journal_temp_unlink_buffer(struct journal_head *jh)
+void __jbd2_journal_temp_unlink_buffer(struct journal_head *jh)
{
struct journal_head **list = NULL;
transaction_t *transaction;
@@ -1538,23 +1538,23 @@ void __journal_temp_unlink_buffer(struct journal_head *jh)
mark_buffer_dirty(bh); /* Expose it to the VM */
}
-void __journal_unfile_buffer(struct journal_head *jh)
+void __jbd2_journal_unfile_buffer(struct journal_head *jh)
{
- __journal_temp_unlink_buffer(jh);
+ __jbd2_journal_temp_unlink_buffer(jh);
jh->b_transaction = NULL;
}
-void journal_unfile_buffer(journal_t *journal, struct journal_head *jh)
+void jbd2_journal_unfile_buffer(journal_t *journal, struct journal_head *jh)
{
jbd_lock_bh_state(jh2bh(jh));
spin_lock(&journal->j_list_lock);
- __journal_unfile_buffer(jh);
+ __jbd2_journal_unfile_buffer(jh);
spin_unlock(&journal->j_list_lock);
jbd_unlock_bh_state(jh2bh(jh));
}
/*
- * Called from journal_try_to_free_buffers().
+ * Called from jbd2_journal_try_to_free_buffers().
*
* Called under jbd_lock_bh_state(bh)
*/
@@ -1576,16 +1576,16 @@ __journal_try_to_free_buffer(journal_t *journal, struct buffer_head *bh)
if (jh->b_jlist == BJ_SyncData || jh->b_jlist == BJ_Locked) {
/* A written-back ordered data buffer */
JBUFFER_TRACE(jh, "release data");
- __journal_unfile_buffer(jh);
- journal_remove_journal_head(bh);
+ __jbd2_journal_unfile_buffer(jh);
+ jbd2_journal_remove_journal_head(bh);
__brelse(bh);
}
} else if (jh->b_cp_transaction != 0 && jh->b_transaction == 0) {
/* written-back checkpointed metadata buffer */
if (jh->b_jlist == BJ_None) {
JBUFFER_TRACE(jh, "remove from checkpoint list");
- __journal_remove_checkpoint(jh);
- journal_remove_journal_head(bh);
+ __jbd2_journal_remove_checkpoint(jh);
+ jbd2_journal_remove_journal_head(bh);
__brelse(bh);
}
}
@@ -1596,7 +1596,7 @@ out:
/**
- * int journal_try_to_free_buffers() - try to free page buffers.
+ * int jbd2_journal_try_to_free_buffers() - try to free page buffers.
* @journal: journal for operation
* @page: to try and free
* @unused_gfp_mask: unused
@@ -1613,13 +1613,13 @@ out:
*
* This complicates JBD locking somewhat. We aren't protected by the
* BKL here. We wish to remove the buffer from its committing or
- * running transaction's ->t_datalist via __journal_unfile_buffer.
+ * running transaction's ->t_datalist via __jbd2_journal_unfile_buffer.
*
* This may *change* the value of transaction_t->t_datalist, so anyone
* who looks at t_datalist needs to lock against this function.
*
- * Even worse, someone may be doing a journal_dirty_data on this
- * buffer. So we need to lock against that. journal_dirty_data()
+ * Even worse, someone may be doing a jbd2_journal_dirty_data on this
+ * buffer. So we need to lock against that. jbd2_journal_dirty_data()
* will come out of the lock with the buffer dirty, which makes it
* ineligible for release here.
*
@@ -1629,7 +1629,7 @@ out:
* cannot happen because we never reallocate freed data as metadata
* while the data is part of a transaction. Yes?
*/
-int journal_try_to_free_buffers(journal_t *journal,
+int jbd2_journal_try_to_free_buffers(journal_t *journal,
struct page *page, gfp_t unused_gfp_mask)
{
struct buffer_head *head;
@@ -1646,15 +1646,15 @@ int journal_try_to_free_buffers(journal_t *journal,
/*
* We take our own ref against the journal_head here to avoid
* having to add tons of locking around each instance of
- * journal_remove_journal_head() and journal_put_journal_head().
+ * jbd2_journal_remove_journal_head() and jbd2_journal_put_journal_head().
*/
- jh = journal_grab_journal_head(bh);
+ jh = jbd2_journal_grab_journal_head(bh);
if (!jh)
continue;
jbd_lock_bh_state(bh);
__journal_try_to_free_buffer(journal, bh);
- journal_put_journal_head(jh);
+ jbd2_journal_put_journal_head(jh);
jbd_unlock_bh_state(bh);
if (buffer_jbd(bh))
goto busy;
@@ -1681,23 +1681,23 @@ static int __dispose_buffer(struct journal_head *jh, transaction_t *transaction)
int may_free = 1;
struct buffer_head *bh = jh2bh(jh);
- __journal_unfile_buffer(jh);
+ __jbd2_journal_unfile_buffer(jh);
if (jh->b_cp_transaction) {
JBUFFER_TRACE(jh, "on running+cp transaction");
- __journal_file_buffer(jh, transaction, BJ_Forget);
+ __jbd2_journal_file_buffer(jh, transaction, BJ_Forget);
clear_buffer_jbddirty(bh);
may_free = 0;
} else {
JBUFFER_TRACE(jh, "on running transaction");
- journal_remove_journal_head(bh);
+ jbd2_journal_remove_journal_head(bh);
__brelse(bh);
}
return may_free;
}
/*
- * journal_invalidatepage
+ * jbd2_journal_invalidatepage
*
* This code is tricky. It has a number of cases to deal with.
*
@@ -1765,7 +1765,7 @@ static int journal_unmap_buffer(journal_t *journal, struct buffer_head *bh)
jbd_lock_bh_state(bh);
spin_lock(&journal->j_list_lock);
- jh = journal_grab_journal_head(bh);
+ jh = jbd2_journal_grab_journal_head(bh);
if (!jh)
goto zap_buffer_no_jh;
@@ -1796,7 +1796,7 @@ static int journal_unmap_buffer(journal_t *journal, struct buffer_head *bh)
JBUFFER_TRACE(jh, "checkpointed: add to BJ_Forget");
ret = __dispose_buffer(jh,
journal->j_running_transaction);
- journal_put_journal_head(jh);
+ jbd2_journal_put_journal_head(jh);
spin_unlock(&journal->j_list_lock);
jbd_unlock_bh_state(bh);
spin_unlock(&journal->j_state_lock);
@@ -1810,7 +1810,7 @@ static int journal_unmap_buffer(journal_t *journal, struct buffer_head *bh)
JBUFFER_TRACE(jh, "give to committing trans");
ret = __dispose_buffer(jh,
journal->j_committing_transaction);
- journal_put_journal_head(jh);
+ jbd2_journal_put_journal_head(jh);
spin_unlock(&journal->j_list_lock);
jbd_unlock_bh_state(bh);
spin_unlock(&journal->j_state_lock);
@@ -1844,7 +1844,7 @@ static int journal_unmap_buffer(journal_t *journal, struct buffer_head *bh)
journal->j_running_transaction);
jh->b_next_transaction = NULL;
}
- journal_put_journal_head(jh);
+ jbd2_journal_put_journal_head(jh);
spin_unlock(&journal->j_list_lock);
jbd_unlock_bh_state(bh);
spin_unlock(&journal->j_state_lock);
@@ -1861,7 +1861,7 @@ static int journal_unmap_buffer(journal_t *journal, struct buffer_head *bh)
}
zap_buffer:
- journal_put_journal_head(jh);
+ jbd2_journal_put_journal_head(jh);
zap_buffer_no_jh:
spin_unlock(&journal->j_list_lock);
jbd_unlock_bh_state(bh);
@@ -1877,7 +1877,7 @@ zap_buffer_unlocked:
}
/**
- * void journal_invalidatepage()
+ * void jbd2_journal_invalidatepage()
* @journal: journal to use for flush...
* @page: page to flush
* @offset: length of page to invalidate.
@@ -1885,7 +1885,7 @@ zap_buffer_unlocked:
* Reap page buffers containing data after offset in page.
*
*/
-void journal_invalidatepage(journal_t *journal,
+void jbd2_journal_invalidatepage(journal_t *journal,
struct page *page,
unsigned long offset)
{
@@ -1927,7 +1927,7 @@ void journal_invalidatepage(journal_t *journal,
/*
* File a buffer on the given transaction list.
*/
-void __journal_file_buffer(struct journal_head *jh,
+void __jbd2_journal_file_buffer(struct journal_head *jh,
transaction_t *transaction, int jlist)
{
struct journal_head **list = NULL;
@@ -1956,7 +1956,7 @@ void __journal_file_buffer(struct journal_head *jh,
}
if (jh->b_transaction)
- __journal_temp_unlink_buffer(jh);
+ __jbd2_journal_temp_unlink_buffer(jh);
jh->b_transaction = transaction;
switch (jlist) {
@@ -1998,12 +1998,12 @@ void __journal_file_buffer(struct journal_head *jh,
set_buffer_jbddirty(bh);
}
-void journal_file_buffer(struct journal_head *jh,
+void jbd2_journal_file_buffer(struct journal_head *jh,
transaction_t *transaction, int jlist)
{
jbd_lock_bh_state(jh2bh(jh));
spin_lock(&transaction->t_journal->j_list_lock);
- __journal_file_buffer(jh, transaction, jlist);
+ __jbd2_journal_file_buffer(jh, transaction, jlist);
spin_unlock(&transaction->t_journal->j_list_lock);
jbd_unlock_bh_state(jh2bh(jh));
}
@@ -2018,7 +2018,7 @@ void journal_file_buffer(struct journal_head *jh,
*
* Called under jbd_lock_bh_state(jh2bh(jh))
*/
-void __journal_refile_buffer(struct journal_head *jh)
+void __jbd2_journal_refile_buffer(struct journal_head *jh)
{
int was_dirty;
struct buffer_head *bh = jh2bh(jh);
@@ -2029,7 +2029,7 @@ void __journal_refile_buffer(struct journal_head *jh)
/* If the buffer is now unused, just drop it. */
if (jh->b_next_transaction == NULL) {
- __journal_unfile_buffer(jh);
+ __jbd2_journal_unfile_buffer(jh);
return;
}
@@ -2039,10 +2039,10 @@ void __journal_refile_buffer(struct journal_head *jh)
*/
was_dirty = test_clear_buffer_jbddirty(bh);
- __journal_temp_unlink_buffer(jh);
+ __jbd2_journal_temp_unlink_buffer(jh);
jh->b_transaction = jh->b_next_transaction;
jh->b_next_transaction = NULL;
- __journal_file_buffer(jh, jh->b_transaction,
+ __jbd2_journal_file_buffer(jh, jh->b_transaction,
was_dirty ? BJ_Metadata : BJ_Reserved);
J_ASSERT_JH(jh, jh->b_transaction->t_state == T_RUNNING);
@@ -2054,26 +2054,26 @@ void __journal_refile_buffer(struct journal_head *jh)
* For the unlocked version of this call, also make sure that any
* hanging journal_head is cleaned up if necessary.
*
- * __journal_refile_buffer is usually called as part of a single locked
+ * __jbd2_journal_refile_buffer is usually called as part of a single locked
* operation on a buffer_head, in which the caller is probably going to
* be hooking the journal_head onto other lists. In that case it is up
* to the caller to remove the journal_head if necessary. For the
- * unlocked journal_refile_buffer call, the caller isn't going to be
+ * unlocked jbd2_journal_refile_buffer call, the caller isn't going to be
* doing anything else to the buffer so we need to do the cleanup
* ourselves to avoid a jh leak.
*
* *** The journal_head may be freed by this call! ***
*/
-void journal_refile_buffer(journal_t *journal, struct journal_head *jh)
+void jbd2_journal_refile_buffer(journal_t *journal, struct journal_head *jh)
{
struct buffer_head *bh = jh2bh(jh);
jbd_lock_bh_state(bh);
spin_lock(&journal->j_list_lock);
- __journal_refile_buffer(jh);
+ __jbd2_journal_refile_buffer(jh);
jbd_unlock_bh_state(bh);
- journal_remove_journal_head(bh);
+ jbd2_journal_remove_journal_head(bh);
spin_unlock(&journal->j_list_lock);
__brelse(bh);
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-26 04:59:38 +0000