#include "sufile.h"
#include "cpfile.h"
#include "ifile.h"
-#include "seglist.h"
#include "segbuf.h"
/* State flags of collection */
#define NILFS_CF_NODE 0x0001 /* Collecting node blocks */
#define NILFS_CF_IFILE_STARTED 0x0002 /* IFILE stage has started */
-#define NILFS_CF_HISTORY_MASK (NILFS_CF_IFILE_STARTED)
+#define NILFS_CF_SUFREED 0x0004 /* segment usages has been freed */
+#define NILFS_CF_HISTORY_MASK (NILFS_CF_IFILE_STARTED | NILFS_CF_SUFREED)
/* Operations depending on the construction mode and file type */
struct nilfs_sc_operations {
{
return list_empty(&sci->sc_dirty_files) &&
!test_bit(NILFS_SC_DIRTY, &sci->sc_flags) &&
- list_empty(&sci->sc_cleaning_segments) &&
+ sci->sc_nfreesegs == 0 &&
(!nilfs_doing_gc() || list_empty(&sci->sc_gc_inodes));
}
}
}
-static void nilfs_segctor_cancel_free_segments(struct nilfs_sc_info *sci,
- struct inode *sufile)
-
-{
- struct list_head *head = &sci->sc_cleaning_segments;
- struct nilfs_segment_entry *ent;
- int err;
-
- list_for_each_entry(ent, head, list) {
- if (!(ent->flags & NILFS_SLH_FREED))
- break;
- err = nilfs_sufile_cancel_free(sufile, ent->segnum);
- WARN_ON(err); /* do not happen */
- ent->flags &= ~NILFS_SLH_FREED;
- }
-}
-
-static int nilfs_segctor_prepare_free_segments(struct nilfs_sc_info *sci,
- struct inode *sufile)
-{
- struct list_head *head = &sci->sc_cleaning_segments;
- struct nilfs_segment_entry *ent;
- int err;
-
- list_for_each_entry(ent, head, list) {
- err = nilfs_sufile_free(sufile, ent->segnum);
- if (unlikely(err))
- return err;
- ent->flags |= NILFS_SLH_FREED;
- }
- return 0;
-}
-
-static void nilfs_segctor_commit_free_segments(struct nilfs_sc_info *sci)
-{
- nilfs_dispose_segment_list(&sci->sc_cleaning_segments);
-}
-
static int nilfs_segctor_apply_buffers(struct nilfs_sc_info *sci,
struct inode *inode,
struct list_head *listp,
struct the_nilfs *nilfs = sbi->s_nilfs;
struct list_head *head;
struct nilfs_inode_info *ii;
+ size_t ndone;
int err = 0;
switch (sci->sc_stage.scnt) {
break;
sci->sc_stage.scnt++; /* Fall through */
case NILFS_ST_SUFILE:
- err = nilfs_segctor_prepare_free_segments(sci,
- nilfs->ns_sufile);
- if (unlikely(err))
+ err = nilfs_sufile_freev(nilfs->ns_sufile, sci->sc_freesegs,
+ sci->sc_nfreesegs, &ndone);
+ if (unlikely(err)) {
+ nilfs_sufile_cancel_freev(nilfs->ns_sufile,
+ sci->sc_freesegs, ndone,
+ NULL);
break;
+ }
+ sci->sc_stage.flags |= NILFS_CF_SUFREED;
+
err = nilfs_segctor_scan_file(sci, nilfs->ns_sufile,
&nilfs_sc_file_ops);
if (unlikely(err))
{
if (unlikely(err)) {
nilfs_segctor_free_incomplete_segments(sci, nilfs);
- nilfs_segctor_cancel_free_segments(sci, nilfs->ns_sufile);
+ if (sci->sc_stage.flags & NILFS_CF_SUFREED) {
+ int ret;
+
+ ret = nilfs_sufile_cancel_freev(nilfs->ns_sufile,
+ sci->sc_freesegs,
+ sci->sc_nfreesegs,
+ NULL);
+ WARN_ON(ret); /* do not happen */
+ }
}
nilfs_segctor_clear_segment_buffers(sci);
}
if (mode != SC_LSEG_SR || sci->sc_stage.scnt < NILFS_ST_CPFILE)
break;
- nilfs_segctor_cancel_free_segments(sci, nilfs->ns_sufile);
+ if (sci->sc_stage.flags & NILFS_CF_SUFREED) {
+ err = nilfs_sufile_cancel_freev(nilfs->ns_sufile,
+ sci->sc_freesegs,
+ sci->sc_nfreesegs,
+ NULL);
+ WARN_ON(err); /* do not happen */
+ }
nilfs_segctor_clear_segment_buffers(sci);
err = nilfs_segctor_extend_segments(sci, nilfs, nadd);
nilfs_segctor_complete_write(sci);
/* Commit segments */
- if (has_sr) {
- nilfs_segctor_commit_free_segments(sci);
+ if (has_sr)
nilfs_segctor_clear_metadata_dirty(sci);
- }
nilfs_segctor_end_construction(sci, nilfs, 0);
/* assign bit 0 to data files */
}
-int nilfs_segctor_add_segments_to_be_freed(struct nilfs_sc_info *sci,
- __u64 *segnum, size_t nsegs)
-{
- struct nilfs_segment_entry *ent;
- struct the_nilfs *nilfs = sci->sc_sbi->s_nilfs;
- struct inode *sufile = nilfs->ns_sufile;
- LIST_HEAD(list);
- __u64 *pnum;
- size_t i;
- int err;
-
- for (pnum = segnum, i = 0; i < nsegs; pnum++, i++) {
- ent = nilfs_alloc_segment_entry(*pnum);
- if (unlikely(!ent)) {
- err = -ENOMEM;
- goto failed;
- }
- list_add_tail(&ent->list, &list);
-
- err = nilfs_open_segment_entry(ent, sufile);
- if (unlikely(err))
- goto failed;
-
- if (unlikely(!nilfs_segment_usage_dirty(ent->raw_su)))
- printk(KERN_WARNING "NILFS: unused segment is "
- "requested to be cleaned (segnum=%llu)\n",
- (unsigned long long)ent->segnum);
- nilfs_close_segment_entry(ent, sufile);
- }
- list_splice(&list, sci->sc_cleaning_segments.prev);
- return 0;
-
- failed:
- nilfs_dispose_segment_list(&list);
- return err;
-}
-
-void nilfs_segctor_clear_segments_to_be_freed(struct nilfs_sc_info *sci)
-{
- nilfs_dispose_segment_list(&sci->sc_cleaning_segments);
-}
-
struct nilfs_segctor_wait_request {
wait_queue_t wq;
__u32 seq;
err = nilfs_init_gcdat_inode(nilfs);
if (unlikely(err))
goto out_unlock;
+
err = nilfs_ioctl_prepare_clean_segments(nilfs, argv, kbufs);
if (unlikely(err))
goto out_unlock;
+ sci->sc_freesegs = kbufs[4];
+ sci->sc_nfreesegs = argv[4].v_nmembs;
list_splice_init(&nilfs->ns_gc_inodes, sci->sc_gc_inodes.prev);
for (;;) {
}
out_unlock:
+ sci->sc_freesegs = NULL;
+ sci->sc_nfreesegs = 0;
nilfs_clear_gcdat_inode(nilfs);
nilfs_transaction_unlock(sbi);
return err;
INIT_LIST_HEAD(&sci->sc_dirty_files);
INIT_LIST_HEAD(&sci->sc_segbufs);
INIT_LIST_HEAD(&sci->sc_gc_inodes);
- INIT_LIST_HEAD(&sci->sc_cleaning_segments);
INIT_LIST_HEAD(&sci->sc_copied_buffers);
sci->sc_interval = HZ * NILFS_SC_DEFAULT_TIMEOUT;
nilfs_dispose_list(sbi, &sci->sc_dirty_files, 1);
}
- if (!list_empty(&sci->sc_cleaning_segments))
- nilfs_dispose_segment_list(&sci->sc_cleaning_segments);
-
WARN_ON(!list_empty(&sci->sc_segbufs));
down_write(&sbi->s_nilfs->ns_segctor_sem);
projects / deliverable / linux.git / blobdiff