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pNFS: Clear all layout segment state in pnfs_mark_layout_stateid_invalid 

When the layout state is invalidated, then so is the layout segment
state, and hence we do need to clean up the state bits.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Trond Myklebust 2016-11-30 12:32:55 -05:00
parent 53e6fc86ab
commit fe1cf9469d
1 changed files with 18 additions and 1 deletions
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19
fs/nfs/pnfs.c
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@ -58,6 +58,8 @@ static void pnfs_free_returned_lsegs(struct pnfs_layout_hdr *lo,
struct list_head *free_me,
const struct pnfs_layout_range *range,
u32 seq);
static bool pnfs_lseg_dec_and_remove_zero(struct pnfs_layout_segment *lseg,
struct list_head *tmp_list);
/* Return the registered pnfs layout driver module matching given id */
static struct pnfs_layoutdriver_type *
@ -311,6 +313,18 @@ pnfs_clear_layoutreturn_info(struct pnfs_layout_hdr *lo)
clear_bit(NFS_LAYOUT_RETURN_REQUESTED, &lo->plh_flags);
}
static void
pnfs_clear_lseg_state(struct pnfs_layout_segment *lseg,
struct list_head *free_me)
{
clear_bit(NFS_LSEG_ROC, &lseg->pls_flags);
clear_bit(NFS_LSEG_LAYOUTRETURN, &lseg->pls_flags);
if (test_and_clear_bit(NFS_LSEG_VALID, &lseg->pls_flags))
pnfs_lseg_dec_and_remove_zero(lseg, free_me);
if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, &lseg->pls_flags))
pnfs_lseg_dec_and_remove_zero(lseg, free_me);
}
/*
* Mark a pnfs_layout_hdr and all associated layout segments as invalid
*
@ -327,11 +341,14 @@ pnfs_mark_layout_stateid_invalid(struct pnfs_layout_hdr *lo,
.offset = 0,
.length = NFS4_MAX_UINT64,
};
struct pnfs_layout_segment *lseg, *next;
set_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags);
pnfs_clear_layoutreturn_info(lo);
list_for_each_entry_safe(lseg, next, &lo->plh_segs, pls_list)
pnfs_clear_lseg_state(lseg, lseg_list);
pnfs_free_returned_lsegs(lo, lseg_list, &range, 0);
return pnfs_mark_matching_lsegs_invalid(lo, lseg_list, &range, 0);
return !list_empty(&lo->plh_segs);
}
static int