unimore/kernel-hacking-2024-linux-steffo
unimore/kernel-hacking-2024-linux-steffo
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xfs: move xfs_extent_free_defer_add to xfs_extfree_item.c

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Move the code that adds the incore xfs_extent_free_item deferred work
data to a transaction to live with the EFI log item code.  This means
that the allocator code no longer has to know about the inner workings
of the EFI log items.

As a consequence, we can get rid of the _{get,put}_group helpers.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Darrick J. Wong 2024-07-02 11:22:56 -07:00
parent 7272f77c67
commit 84a3c1576c
4 changed files with 25 additions and 27 deletions
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12
fs/xfs/libxfs/xfs_alloc.c
View file

@ -27,6 +27,7 @@
#include "xfs_ag_resv.h"
#include "xfs_bmap.h"
#include "xfs_health.h"
#include "xfs_extfree_item.h"
struct kmem_cache *xfs_extfree_item_cache;
@ -2552,16 +2553,7 @@ xfs_defer_extent_free(
xefi->xefi_owner = XFS_RMAP_OWN_NULL;
}
trace_xfs_extent_free_defer(mp, xefi);
xfs_extent_free_get_group(mp, xefi);
if (xefi->xefi_agresv == XFS_AG_RESV_AGFL)
*dfpp = xfs_defer_add(tp, &xefi->xefi_list,
&xfs_agfl_free_defer_type);
else
*dfpp = xfs_defer_add(tp, &xefi->xefi_list,
&xfs_extent_free_defer_type);
xfs_extent_free_defer_add(tp, xefi, dfpp);
return 0;
}

3
fs/xfs/libxfs/xfs_alloc.h
View file

@ -256,9 +256,6 @@ struct xfs_extent_free_item {
enum xfs_ag_resv_type xefi_agresv;
};
void xfs_extent_free_get_group(struct xfs_mount *mp,
struct xfs_extent_free_item *xefi);
#define XFS_EFI_SKIP_DISCARD (1U << 0) /* don't issue discard */
#define XFS_EFI_ATTR_FORK (1U << 1) /* freeing attr fork block */
#define XFS_EFI_BMBT_BLOCK (1U << 2) /* freeing bmap btree block */

31
fs/xfs/xfs_extfree_item.c
View file

@ -436,21 +436,24 @@ xfs_extent_free_create_done(
return &efdp->efd_item;
}
/* Take a passive ref to the AG containing the space we're freeing. */
/* Add this deferred EFI to the transaction. */
void
xfs_extent_free_get_group(
struct xfs_mount *mp,
struct xfs_extent_free_item *xefi)
xfs_extent_free_defer_add(
struct xfs_trans *tp,
struct xfs_extent_free_item *xefi,
struct xfs_defer_pending **dfpp)
{
xefi->xefi_pag = xfs_perag_intent_get(mp, xefi->xefi_startblock);
}
struct xfs_mount *mp = tp->t_mountp;
/* Release a passive AG ref after some freeing work. */
static inline void
xfs_extent_free_put_group(
struct xfs_extent_free_item *xefi)
{
xfs_perag_intent_put(xefi->xefi_pag);
trace_xfs_extent_free_defer(mp, xefi);
xefi->xefi_pag = xfs_perag_intent_get(mp, xefi->xefi_startblock);
if (xefi->xefi_agresv == XFS_AG_RESV_AGFL)
*dfpp = xfs_defer_add(tp, &xefi->xefi_list,
&xfs_agfl_free_defer_type);
else
*dfpp = xfs_defer_add(tp, &xefi->xefi_list,
&xfs_extent_free_defer_type);
}
/* Cancel a free extent. */
@ -460,7 +463,7 @@ xfs_extent_free_cancel_item(
{
struct xfs_extent_free_item *xefi = xefi_entry(item);
xfs_extent_free_put_group(xefi);
xfs_perag_intent_put(xefi->xefi_pag);
kmem_cache_free(xfs_extfree_item_cache, xefi);
}
@ -575,7 +578,7 @@ xfs_efi_recover_work(
xefi->xefi_blockcount = extp->ext_len;
xefi->xefi_agresv = XFS_AG_RESV_NONE;
xefi->xefi_owner = XFS_RMAP_OWN_UNKNOWN;
xfs_extent_free_get_group(mp, xefi);
xefi->xefi_pag = xfs_perag_intent_get(mp, extp->ext_start);
xfs_defer_add_item(dfp, &xefi->xefi_list);
}

6
fs/xfs/xfs_extfree_item.h
View file

@ -88,4 +88,10 @@ xfs_efd_log_item_sizeof(
extern struct kmem_cache *xfs_efi_cache;
extern struct kmem_cache *xfs_efd_cache;
struct xfs_extent_free_item;
void xfs_extent_free_defer_add(struct xfs_trans *tp,
struct xfs_extent_free_item *xefi,
struct xfs_defer_pending **dfpp);
#endif /* __XFS_EXTFREE_ITEM_H__ */