| Message ID | 1439887589-35190-1-git-send-email-jaegeuk@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
> -----Original Message----- > From: Jaegeuk Kim [mailto:jaegeuk@kernel.org] > Sent: Tuesday, August 18, 2015 4:46 PM > To: linux-kernel@vger.kernel.org; linux-fsdevel@vger.kernel.org; > linux-f2fs-devel@lists.sourceforge.net > Cc: Jaegeuk Kim > Subject: [f2fs-dev] [PATCH 1/5] f2fs: reuse nids more aggressively > > If we can reuse nids as many as possible, we can mitigate producing obsolete > node pages in the page cache. > > Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> Reviewed-by: Chao Yu <chao2.yu@samsung.com> -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index 6e10c2a..3cc32b8 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -306,6 +306,10 @@ static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { unsigned char version = nat_get_version(e); nat_set_version(e, inc_node_version(version)); + + /* in order to reuse the nid */ + if (nm_i->next_scan_nid > ni->nid) + nm_i->next_scan_nid = ni->nid; } /* change address */
If we can reuse nids as many as possible, we can mitigate producing obsolete node pages in the page cache. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> --- fs/f2fs/node.c | 4 ++++ 1 file changed, 4 insertions(+)