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| author | Dave Chinner <dchinner@redhat.com> | 2010-12-20 11:57:24 +1100 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2010-12-20 11:57:24 +1100 |
| commit | 9c5f8414efd5eeed9f498d4170337a3eb126341f (patch) | |
| tree | 5801d0cbd2f37cc72e0b541231c60e281c27d874 | |
| parent | 821eb21d97a8b686649c08b7284d0b9f34d0e138 (diff) | |
| download | blackbird-obmc-linux-9c5f8414efd5eeed9f498d4170337a3eb126341f.tar.gz blackbird-obmc-linux-9c5f8414efd5eeed9f498d4170337a3eb126341f.zip | |
xfs: fix EFI transaction cancellation.
XFS_EFI_CANCELED has not been set in the code base since
xfs_efi_cancel() was removed back in 2006 by commit
065d312e15902976d256ddaf396a7950ec0350a8 ("[XFS] Remove unused
iop_abort log item operation), and even then xfs_efi_cancel() was
never called. I haven't tracked it back further than that (beyond
git history), but it indicates that the handling of EFIs in
cancelled transactions has been broken for a long time.
Basically, when we get an IOP_UNPIN(lip, 1); call from
xfs_trans_uncommit() (i.e. remove == 1), if we don't free the log
item descriptor we leak it. Fix the behviour to be correct and kill
the XFS_EFI_CANCELED flag.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
| -rw-r--r-- | fs/xfs/xfs_extfree_item.c | 20 | ||||
| -rw-r--r-- | fs/xfs/xfs_extfree_item.h | 1 |
2 files changed, 9 insertions, 12 deletions
diff --git a/fs/xfs/xfs_extfree_item.c b/fs/xfs/xfs_extfree_item.c index a55e687bf562..5997efae05dc 100644 --- a/fs/xfs/xfs_extfree_item.c +++ b/fs/xfs/xfs_extfree_item.c @@ -99,10 +99,11 @@ xfs_efi_item_pin( } /* - * While EFIs cannot really be pinned, the unpin operation is the - * last place at which the EFI is manipulated during a transaction. - * Here we coordinate with xfs_efi_cancel() to determine who gets to - * free the EFI. + * While EFIs cannot really be pinned, the unpin operation is the last place at + * which the EFI is manipulated during a transaction. If we are being asked to + * remove the EFI it's because the transaction has been cancelled and by + * definition that means the EFI cannot be in the AIL so remove it from the + * transaction and free it. */ STATIC void xfs_efi_item_unpin( @@ -113,17 +114,14 @@ xfs_efi_item_unpin( struct xfs_ail *ailp = lip->li_ailp; spin_lock(&ailp->xa_lock); - if (efip->efi_flags & XFS_EFI_CANCELED) { - if (remove) - xfs_trans_del_item(lip); - - /* xfs_trans_ail_delete() drops the AIL lock. */ - xfs_trans_ail_delete(ailp, lip); + if (remove) { + ASSERT(!(lip->li_flags & XFS_LI_IN_AIL)); + xfs_trans_del_item(lip); xfs_efi_item_free(efip); } else { efip->efi_flags |= XFS_EFI_COMMITTED; - spin_unlock(&ailp->xa_lock); } + spin_unlock(&ailp->xa_lock); } /* diff --git a/fs/xfs/xfs_extfree_item.h b/fs/xfs/xfs_extfree_item.h index 0d22c56fdf64..f7834ec8efad 100644 --- a/fs/xfs/xfs_extfree_item.h +++ b/fs/xfs/xfs_extfree_item.h @@ -115,7 +115,6 @@ typedef struct xfs_efd_log_format_64 { */ #define XFS_EFI_RECOVERED 0x1 #define XFS_EFI_COMMITTED 0x2 -#define XFS_EFI_CANCELED 0x4 /* * This is the "extent free intention" log item. It is used |
