From: Christoph Hellwig hch@lst.de
[ Upstream commit 83a80e95e797a2a6d14bf7983e5e6eecf8f5facb ]
xfs_trans_alloc_empty only shares the very basic transaction structure allocation and initialization with xfs_trans_alloc.
Split out a new __xfs_trans_alloc helper for that and otherwise decouple xfs_trans_alloc_empty from xfs_trans_alloc.
Signed-off-by: Christoph Hellwig hch@lst.de Reviewed-by: Darrick J. Wong djwong@kernel.org Signed-off-by: Carlos Maiolino cem@kernel.org Stable-dep-of: d2845519b072 ("xfs: fully decouple XFS_IBULK* flags from XFS_IWALK* flags") Signed-off-by: Sasha Levin sashal@kernel.org --- fs/xfs/xfs_trans.c | 52 +++++++++++++++++++++++++--------------------- 1 file changed, 28 insertions(+), 24 deletions(-)
diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c index c6657072361a..db8f8b1b5d68 100644 --- a/fs/xfs/xfs_trans.c +++ b/fs/xfs/xfs_trans.c @@ -241,6 +241,28 @@ xfs_trans_reserve( return error; }
+static struct xfs_trans * +__xfs_trans_alloc( + struct xfs_mount *mp, + uint flags) +{ + struct xfs_trans *tp; + + ASSERT(!(flags & XFS_TRANS_RES_FDBLKS) || xfs_has_lazysbcount(mp)); + + tp = kmem_cache_zalloc(xfs_trans_cache, GFP_KERNEL | __GFP_NOFAIL); + if (!(flags & XFS_TRANS_NO_WRITECOUNT)) + sb_start_intwrite(mp->m_super); + xfs_trans_set_context(tp); + tp->t_flags = flags; + tp->t_mountp = mp; + INIT_LIST_HEAD(&tp->t_items); + INIT_LIST_HEAD(&tp->t_busy); + INIT_LIST_HEAD(&tp->t_dfops); + tp->t_highest_agno = NULLAGNUMBER; + return tp; +} + int xfs_trans_alloc( struct xfs_mount *mp, @@ -254,33 +276,16 @@ xfs_trans_alloc( bool want_retry = true; int error;
+ ASSERT(resp->tr_logres > 0); + /* * Allocate the handle before we do our freeze accounting and setting up * GFP_NOFS allocation context so that we avoid lockdep false positives * by doing GFP_KERNEL allocations inside sb_start_intwrite(). */ retry: - tp = kmem_cache_zalloc(xfs_trans_cache, GFP_KERNEL | __GFP_NOFAIL); - if (!(flags & XFS_TRANS_NO_WRITECOUNT)) - sb_start_intwrite(mp->m_super); - xfs_trans_set_context(tp); - - /* - * Zero-reservation ("empty") transactions can't modify anything, so - * they're allowed to run while we're frozen. - */ - WARN_ON(resp->tr_logres > 0 && - mp->m_super->s_writers.frozen == SB_FREEZE_COMPLETE); - ASSERT(!(flags & XFS_TRANS_RES_FDBLKS) || - xfs_has_lazysbcount(mp)); - - tp->t_flags = flags; - tp->t_mountp = mp; - INIT_LIST_HEAD(&tp->t_items); - INIT_LIST_HEAD(&tp->t_busy); - INIT_LIST_HEAD(&tp->t_dfops); - tp->t_highest_agno = NULLAGNUMBER; - + WARN_ON(mp->m_super->s_writers.frozen == SB_FREEZE_COMPLETE); + tp = __xfs_trans_alloc(mp, flags); error = xfs_trans_reserve(tp, resp, blocks, rtextents); if (error == -ENOSPC && want_retry) { xfs_trans_cancel(tp); @@ -329,9 +334,8 @@ xfs_trans_alloc_empty( struct xfs_mount *mp, struct xfs_trans **tpp) { - struct xfs_trans_res resv = {0}; - - return xfs_trans_alloc(mp, &resv, 0, 0, XFS_TRANS_NO_WRITECOUNT, tpp); + *tpp = __xfs_trans_alloc(mp, XFS_TRANS_NO_WRITECOUNT); + return 0; }
/*