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author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2010-01-26 06:20:15 (GMT) |
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committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2010-02-13 03:26:03 (GMT) |
commit | dcd76186955e2b595c378dbe5b9bb6c8c5374b10 (patch) | |
tree | 96efa3758e289ddaf5279b8c77f7f9e2f8a3a142 /fs/nilfs2/segment.c | |
parent | 086d1764b22bb2d9d79bb8e2198927acf028d732 (diff) | |
download | linux-fsl-qoriq-dcd76186955e2b595c378dbe5b9bb6c8c5374b10.tar.xz |
nilfs2: get rid of nilfs_segctor_req struct
This will clean up nilfs_segctor_req struct and the obscure request
argument passed among private methods of segment constructor.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs/nilfs2/segment.c')
-rw-r--r-- | fs/nilfs2/segment.c | 79 |
1 files changed, 38 insertions, 41 deletions
diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c index ab439a7..fa4abfc 100644 --- a/fs/nilfs2/segment.c +++ b/fs/nilfs2/segment.c @@ -2425,43 +2425,43 @@ int nilfs_construct_dsync_segment(struct super_block *sb, struct inode *inode, return err; } -struct nilfs_segctor_req { - int mode; - __u32 seq_accepted; - int sc_err; /* construction failure */ - int sb_err; /* super block writeback failure */ -}; - #define FLUSH_FILE_BIT (0x1) /* data file only */ #define FLUSH_DAT_BIT (1 << NILFS_DAT_INO) /* DAT only */ -static void nilfs_segctor_accept(struct nilfs_sc_info *sci, - struct nilfs_segctor_req *req) +/** + * nilfs_segctor_accept - record accepted sequence count of log-write requests + * @sci: segment constructor object + */ +static void nilfs_segctor_accept(struct nilfs_sc_info *sci) { - req->sc_err = req->sb_err = 0; spin_lock(&sci->sc_state_lock); - req->seq_accepted = sci->sc_seq_request; + sci->sc_seq_accepted = sci->sc_seq_request; spin_unlock(&sci->sc_state_lock); if (sci->sc_timer) del_timer_sync(sci->sc_timer); } -static void nilfs_segctor_notify(struct nilfs_sc_info *sci, - struct nilfs_segctor_req *req) +/** + * nilfs_segctor_notify - notify the result of request to caller threads + * @sci: segment constructor object + * @mode: mode of log forming + * @err: error code to be notified + */ +static void nilfs_segctor_notify(struct nilfs_sc_info *sci, int mode, int err) { /* Clear requests (even when the construction failed) */ spin_lock(&sci->sc_state_lock); - if (req->mode == SC_LSEG_SR) { + if (mode == SC_LSEG_SR) { sci->sc_state &= ~NILFS_SEGCTOR_COMMIT; - sci->sc_seq_done = req->seq_accepted; - nilfs_segctor_wakeup(sci, req->sc_err ? : req->sb_err); + sci->sc_seq_done = sci->sc_seq_accepted; + nilfs_segctor_wakeup(sci, err); sci->sc_flush_request = 0; } else { - if (req->mode == SC_FLUSH_FILE) + if (mode == SC_FLUSH_FILE) sci->sc_flush_request &= ~FLUSH_FILE_BIT; - else if (req->mode == SC_FLUSH_DAT) + else if (mode == SC_FLUSH_DAT) sci->sc_flush_request &= ~FLUSH_DAT_BIT; /* re-enable timer if checkpoint creation was not done */ @@ -2472,30 +2472,37 @@ static void nilfs_segctor_notify(struct nilfs_sc_info *sci, spin_unlock(&sci->sc_state_lock); } -static int nilfs_segctor_construct(struct nilfs_sc_info *sci, - struct nilfs_segctor_req *req) +/** + * nilfs_segctor_construct - form logs and write them to disk + * @sci: segment constructor object + * @mode: mode of log forming + */ +static int nilfs_segctor_construct(struct nilfs_sc_info *sci, int mode) { struct nilfs_sb_info *sbi = sci->sc_sbi; struct the_nilfs *nilfs = sbi->s_nilfs; int err = 0; + nilfs_segctor_accept(sci); + if (nilfs_discontinued(nilfs)) - req->mode = SC_LSEG_SR; - if (!nilfs_segctor_confirm(sci)) { - err = nilfs_segctor_do_construct(sci, req->mode); - req->sc_err = err; - } + mode = SC_LSEG_SR; + if (!nilfs_segctor_confirm(sci)) + err = nilfs_segctor_do_construct(sci, mode); + if (likely(!err)) { - if (req->mode != SC_FLUSH_DAT) + if (mode != SC_FLUSH_DAT) atomic_set(&nilfs->ns_ndirtyblks, 0); if (test_bit(NILFS_SC_SUPER_ROOT, &sci->sc_flags) && nilfs_discontinued(nilfs)) { down_write(&nilfs->ns_sem); - req->sb_err = nilfs_commit_super(sbi, - nilfs_altsb_need_update(nilfs)); + err = nilfs_commit_super( + sbi, nilfs_altsb_need_update(nilfs)); up_write(&nilfs->ns_sem); } } + + nilfs_segctor_notify(sci, mode, err); return err; } @@ -2526,7 +2533,6 @@ int nilfs_clean_segments(struct super_block *sb, struct nilfs_argv *argv, struct nilfs_sc_info *sci = NILFS_SC(sbi); struct the_nilfs *nilfs = sbi->s_nilfs; struct nilfs_transaction_info ti; - struct nilfs_segctor_req req = { .mode = SC_LSEG_SR }; int err; if (unlikely(!sci)) @@ -2547,10 +2553,8 @@ int nilfs_clean_segments(struct super_block *sb, struct nilfs_argv *argv, list_splice_tail_init(&nilfs->ns_gc_inodes, &sci->sc_gc_inodes); for (;;) { - nilfs_segctor_accept(sci, &req); - err = nilfs_segctor_construct(sci, &req); + err = nilfs_segctor_construct(sci, SC_LSEG_SR); nilfs_remove_written_gcinodes(nilfs, &sci->sc_gc_inodes); - nilfs_segctor_notify(sci, &req); if (likely(!err)) break; @@ -2583,13 +2587,9 @@ static void nilfs_segctor_thread_construct(struct nilfs_sc_info *sci, int mode) { struct nilfs_sb_info *sbi = sci->sc_sbi; struct nilfs_transaction_info ti; - struct nilfs_segctor_req req = { .mode = mode }; nilfs_transaction_lock(sbi, &ti, 0); - - nilfs_segctor_accept(sci, &req); - nilfs_segctor_construct(sci, &req); - nilfs_segctor_notify(sci, &req); + nilfs_segctor_construct(sci, mode); /* * Unclosed segment should be retried. We do this using sc_timer. @@ -2807,12 +2807,9 @@ static void nilfs_segctor_write_out(struct nilfs_sc_info *sci) do { struct nilfs_sb_info *sbi = sci->sc_sbi; struct nilfs_transaction_info ti; - struct nilfs_segctor_req req = { .mode = SC_LSEG_SR }; nilfs_transaction_lock(sbi, &ti, 0); - nilfs_segctor_accept(sci, &req); - ret = nilfs_segctor_construct(sci, &req); - nilfs_segctor_notify(sci, &req); + ret = nilfs_segctor_construct(sci, SC_LSEG_SR); nilfs_transaction_unlock(sbi); } while (ret && retrycount-- > 0); |