The patch titled nilfs2: mark minor flag for checkpoint created by internal operation has been added to the -mm tree. Its filename is nilfs2-mark-minor-flag-for-checkpoint-created-by-internal-operation.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: nilfs2: mark minor flag for checkpoint created by internal operation From: Ryusuke Konishi <konishi.ryusuke@xxxxxxxxxxxxx> Nilfs creates checkpoints even for garbage collection or metadata updates such as checkpoint mode change. So, user often sees checkpoints created only by such internal operations. This is inconvenient in some situations. For example, application that monitors checkpoints and changes them to snapshots, will fall into an infinite loop because it cannot distinguish internally created checkpoints. This patch solves this sort of problem by adding a flag to checkpoint for identification. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@xxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- fs/nilfs2/segment.c | 9 +++++++++ fs/nilfs2/segment.h | 3 +++ include/linux/nilfs2_fs.h | 3 +++ 3 files changed, 15 insertions(+) diff -puN fs/nilfs2/segment.c~nilfs2-mark-minor-flag-for-checkpoint-created-by-internal-operation fs/nilfs2/segment.c --- a/fs/nilfs2/segment.c~nilfs2-mark-minor-flag-for-checkpoint-created-by-internal-operation +++ a/fs/nilfs2/segment.c @@ -462,6 +462,9 @@ static void nilfs_segctor_begin_finfo(st sci->sc_binfo_ptr = sci->sc_finfo_ptr; nilfs_segctor_map_segsum_entry( sci, &sci->sc_binfo_ptr, sizeof(struct nilfs_finfo)); + + if (inode->i_sb && !test_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags)) + set_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags); /* skip finfo */ } @@ -887,6 +890,11 @@ static int nilfs_segctor_fill_in_checkpo raw_cp->cp_create = cpu_to_le64(sci->sc_seg_ctime); raw_cp->cp_cno = cpu_to_le64(nilfs->ns_cno); + if (test_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags)) + nilfs_checkpoint_clear_minor(raw_cp); + else + nilfs_checkpoint_set_minor(raw_cp); + nilfs_write_inode_common(sbi->s_ifile, &raw_cp->cp_ifile_inode, 1); nilfs_cpfile_put_checkpoint(nilfs->ns_cpfile, nilfs->ns_cno, bh_cp); return 0; @@ -2091,6 +2099,7 @@ static void nilfs_segctor_complete_write nilfs_set_last_segment(nilfs, segbuf->sb_pseg_start, segbuf->sb_sum.seg_seq, nilfs->ns_cno); + clear_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags); clear_bit(NILFS_SC_DIRTY, &sci->sc_flags); set_bit(NILFS_SC_SUPER_ROOT, &sci->sc_flags); } else diff -puN fs/nilfs2/segment.h~nilfs2-mark-minor-flag-for-checkpoint-created-by-internal-operation fs/nilfs2/segment.h --- a/fs/nilfs2/segment.h~nilfs2-mark-minor-flag-for-checkpoint-created-by-internal-operation +++ a/fs/nilfs2/segment.h @@ -185,6 +185,9 @@ enum { NILFS_SC_SUPER_ROOT, /* The latest segment has a super root */ NILFS_SC_PRIOR_FLUSH, /* Requesting immediate flush without making a checkpoint */ + NILFS_SC_HAVE_DELTA, /* Next checkpoint will have update of files + other than DAT, cpfile, sufile, or files + moved by GC */ }; /* sc_state */ diff -puN include/linux/nilfs2_fs.h~nilfs2-mark-minor-flag-for-checkpoint-created-by-internal-operation include/linux/nilfs2_fs.h --- a/include/linux/nilfs2_fs.h~nilfs2-mark-minor-flag-for-checkpoint-created-by-internal-operation +++ a/include/linux/nilfs2_fs.h @@ -470,6 +470,7 @@ enum { NILFS_CHECKPOINT_SNAPSHOT, NILFS_CHECKPOINT_INVALID, NILFS_CHECKPOINT_SKETCH, + NILFS_CHECKPOINT_MINOR, }; #define NILFS_CHECKPOINT_FNS(flag, name) \ @@ -494,6 +495,7 @@ nilfs_checkpoint_##name(const struct nil NILFS_CHECKPOINT_FNS(SNAPSHOT, snapshot) NILFS_CHECKPOINT_FNS(INVALID, invalid) +NILFS_CHECKPOINT_FNS(MINOR, minor) /** * struct nilfs_cpinfo - checkpoint information @@ -526,6 +528,7 @@ nilfs_cpinfo_##name(const struct nilfs_c NILFS_CPINFO_FNS(SNAPSHOT, snapshot) NILFS_CPINFO_FNS(INVALID, invalid) +NILFS_CPINFO_FNS(MINOR, minor) /** _ Patches currently in -mm which might be from konishi.ryusuke@xxxxxxxxxxxxx are nilfs2-add-document.patch nilfs2-disk-format-and-userland-interface.patch nilfs2-add-inode-and-other-major-structures.patch nilfs2-integrated-block-mapping.patch nilfs2-integrated-block-mapping-remove-nilfs-bmap-wrapper-macros.patch nilfs2-integrated-block-mapping-remove-nilfs-bmap-wrapper-macros-checkpatch-fixes.patch nilfs2-b-tree-based-block-mapping.patch nilfs2-direct-block-mapping.patch nilfs2-b-tree-node-cache.patch nilfs2-buffer-and-page-operations.patch nilfs2-meta-data-file.patch nilfs2-persistent-object-allocator.patch nilfs2-disk-address-translator.patch nilfs2-inode-map-file.patch nilfs2-checkpoint-file.patch nilfs2-segment-usage-file.patch nilfs2-segment-usage-file-fix-wrong-counting-of-checkpoints-and-dirty-segments.patch nilfs2-inode-operations.patch nilfs2-inode-operations-fix.patch nilfs2-file-operations.patch nilfs2-directory-entry-operations.patch nilfs2-pathname-operations.patch nilfs2-pathname-operations-fix.patch nilfs2-operations-for-the_nilfs-core-object.patch nilfs2-super-block-operations.patch nilfs2-super-block-operations-fix.patch nilfs2-segment-buffer.patch nilfs2-segment-buffer-fix.patch nilfs2-segment-constructor.patch nilfs2-segment-constructor-insert-checks-and-hole-block-allocation-in-page_mkwrite.patch nilfs2-fix-miss-sync-issue-for-do_sync_mapping_range.patch nilfs2-fix-miss-sync-issue-for-do_sync_mapping_range-fix.patch nilfs2-recovery-functions.patch nilfs2-another-dat-for-garbage-collection.patch nilfs2-block-cache-for-garbage-collection.patch nilfs2-ioctl-operations.patch nilfs2-update-makefile-and-kconfig.patch nilfs2-fix-problems-of-memory-allocation-in-ioctl.patch nilfs2-cleanup-nilfs_clear_inode.patch nilfs2-avoid-double-error-caused-by-nilfs_transaction_end.patch nilfs2-insert-explanations-in-gcinode-file.patch nilfs2-add-maintainer.patch nilfs2-fix-gc-failure-on-volumes-keeping-numerous-snapshots.patch nilfs2-clean-up-indirect-function-calling-conventions.patch nilfs2-fix-buggy-behavior-seen-in-enumerating-checkpoints.patch nilfs2-remove-timedwait-ioctl-command.patch nilfs2-use-fixed-sized-types-for-ioctl-structures.patch nilfs2-remove-compat-ioctl-code.patch nilfs2-use-unlocked_ioctl.patch nilfs2-extend-nilfs_sustat-ioctl-struct.patch nilfs2-replace-bug_on-and-bug-calls-triggerable-from-ioctl.patch nilfs2-super-block-operations-fix-endian-bug.patch nilfs2-clean-up-sketch-file.patch nilfs2-mark-minor-flag-for-checkpoint-created-by-internal-operation.patch nilfs2-simplify-handling-of-active-state-of-segments.patch nilfs2-introduce-secondary-super-block.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html