diff options
| author | Benny Halevy <bhalevy@panasas.com> | 2011-05-22 18:48:02 +0200 |
|---|---|---|
| committer | Boaz Harrosh <bharrosh@panasas.com> | 2011-05-29 19:52:34 +0200 |
| commit | 778b5502fdba5b183553f3f2ef1672ba78ac58b6 (patch) | |
| tree | dc37bf3b4f9cdfab7ee16a2b776b6ea2d7653210 /fs/nfs/pnfs.c | |
| parent | pnfs: align layoutget requests on page boundaries (diff) | |
| download | linux-778b5502fdba5b183553f3f2ef1672ba78ac58b6.tar.xz linux-778b5502fdba5b183553f3f2ef1672ba78ac58b6.zip | |
pnfs: Use byte-range for cb_layoutrecall
Use recalled range to invalidate particular layout segments in the layout cache.
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Diffstat (limited to 'fs/nfs/pnfs.c')
| -rw-r--r-- | fs/nfs/pnfs.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 2357ee343f4a..20436a5e76cd 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -321,10 +321,12 @@ lo_seg_intersecting(struct pnfs_layout_range *l1, } static bool -should_free_lseg(u32 lseg_iomode, u32 recall_iomode) +should_free_lseg(struct pnfs_layout_range *lseg_range, + struct pnfs_layout_range *recall_range) { - return (recall_iomode == IOMODE_ANY || - lseg_iomode == recall_iomode); + return (recall_range->iomode == IOMODE_ANY || + lseg_range->iomode == recall_range->iomode) && + lo_seg_intersecting(lseg_range, recall_range); } /* Returns 1 if lseg is removed from list, 0 otherwise */ @@ -355,7 +357,7 @@ static int mark_lseg_invalid(struct pnfs_layout_segment *lseg, int mark_matching_lsegs_invalid(struct pnfs_layout_hdr *lo, struct list_head *tmp_list, - u32 iomode) + struct pnfs_layout_range *recall_range) { struct pnfs_layout_segment *lseg, *next; int invalid = 0, removed = 0; @@ -368,7 +370,8 @@ mark_matching_lsegs_invalid(struct pnfs_layout_hdr *lo, return 0; } list_for_each_entry_safe(lseg, next, &lo->plh_segs, pls_list) - if (should_free_lseg(lseg->pls_range.iomode, iomode)) { + if (!recall_range || + should_free_lseg(&lseg->pls_range, recall_range)) { dprintk("%s: freeing lseg %p iomode %d " "offset %llu length %llu\n", __func__, lseg, lseg->pls_range.iomode, lseg->pls_range.offset, @@ -417,7 +420,7 @@ pnfs_destroy_layout(struct nfs_inode *nfsi) lo = nfsi->layout; if (lo) { lo->plh_block_lgets++; /* permanently block new LAYOUTGETs */ - mark_matching_lsegs_invalid(lo, &tmp_list, IOMODE_ANY); + mark_matching_lsegs_invalid(lo, &tmp_list, NULL); } spin_unlock(&nfsi->vfs_inode.i_lock); pnfs_free_lseg_list(&tmp_list); |