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xfs: split and cleanup xfs_log_reserve

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Split the log regrant case out of xfs_log_reserve into a separate function,
and merge xlog_grant_log_space and xlog_regrant_write_log_space into their
respective callers.  Also replace the XFS_LOG_PERM_RESERV flag, which easily
got misused before the previous cleanups with a simple boolean parameter.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
This commit is contained in:
Christoph Hellwig
2012-02-20 02:31:31 +00:00
committed by Ben Myers
parent 42ceedb3ca
commit 9006fb91cf
5 changed files with 151 additions and 170 deletions
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31
fs/xfs/xfs_trans.c
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@@ -681,7 +681,6 @@ xfs_trans_reserve(
uint flags,
uint logcount)
{
int log_flags;
int error = 0;
int rsvd = (tp->t_flags & XFS_TRANS_RESERVE) != 0;
@@ -707,24 +706,32 @@ xfs_trans_reserve(
* Reserve the log space needed for this transaction.
*/
if (logspace > 0) {
ASSERT((tp->t_log_res == 0) || (tp->t_log_res == logspace));
ASSERT((tp->t_log_count == 0) ||
(tp->t_log_count == logcount));
bool permanent = false;
ASSERT(tp->t_log_res == 0 || tp->t_log_res == logspace);
ASSERT(tp->t_log_count == 0 || tp->t_log_count == logcount);
if (flags & XFS_TRANS_PERM_LOG_RES) {
log_flags = XFS_LOG_PERM_RESERV;
tp->t_flags |= XFS_TRANS_PERM_LOG_RES;
permanent = true;
} else {
ASSERT(tp->t_ticket == NULL);
ASSERT(!(tp->t_flags & XFS_TRANS_PERM_LOG_RES));
log_flags = 0;
}
error = xfs_log_reserve(tp->t_mountp, logspace, logcount,
&tp->t_ticket,
XFS_TRANSACTION, log_flags, tp->t_type);
if (error) {
goto undo_blocks;
if (tp->t_ticket != NULL) {
ASSERT(flags & XFS_TRANS_PERM_LOG_RES);
error = xfs_log_regrant(tp->t_mountp, tp->t_ticket);
} else {
error = xfs_log_reserve(tp->t_mountp, logspace,
logcount, &tp->t_ticket,
XFS_TRANSACTION, permanent,
tp->t_type);
}
if (error)
goto undo_blocks;
tp->t_log_res = logspace;
tp->t_log_count = logcount;
}
@@ -752,6 +759,8 @@ xfs_trans_reserve(
*/
undo_log:
if (logspace > 0) {
int log_flags;
if (flags & XFS_TRANS_PERM_LOG_RES) {
log_flags = XFS_LOG_REL_PERM_RESERV;
} else {