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author | Steven Whitehouse <swhiteho@redhat.com> | 2012-02-03 15:21:59 +0000 |
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committer | Steven Whitehouse <swhiteho@redhat.com> | 2012-02-28 17:09:59 +0000 |
commit | 47ac5537a794fc71f89d51af492a945bd233f70c (patch) | |
tree | 65c9c68c8b14ceb0fae31f5a03ec4d811fdbec99 /fs/gfs2/log.c | |
parent | a245769f254bbbea868e2cf8dc42daa061cd276f (diff) | |
download | linux-47ac5537a794fc71f89d51af492a945bd233f70c.tar.gz linux-47ac5537a794fc71f89d51af492a945bd233f70c.tar.bz2 linux-47ac5537a794fc71f89d51af492a945bd233f70c.zip |
GFS2: Move two functions from log.c to lops.c
gfs2_log_get_buf() and gfs2_log_fake_buf() are both used
only in lops.c, so move them next to their callers and they
can then become static.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/log.c')
-rw-r--r-- | fs/gfs2/log.c | 101 |
1 files changed, 4 insertions, 97 deletions
diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c index 756fae9eaf8f..4d31379265cb 100644 --- a/fs/gfs2/log.c +++ b/fs/gfs2/log.c @@ -358,7 +358,7 @@ retry: return 0; } -static u64 log_bmap(struct gfs2_sbd *sdp, unsigned int lbn) +u64 gfs2_log_bmap(struct gfs2_sbd *sdp, unsigned int lbn) { struct gfs2_journal_extent *je; @@ -467,8 +467,8 @@ static unsigned int current_tail(struct gfs2_sbd *sdp) void gfs2_log_incr_head(struct gfs2_sbd *sdp) { - if (sdp->sd_log_flush_head == sdp->sd_log_tail) - BUG_ON(sdp->sd_log_flush_head != sdp->sd_log_head); + BUG_ON((sdp->sd_log_flush_head == sdp->sd_log_tail) && + (sdp->sd_log_flush_head != sdp->sd_log_head)); if (++sdp->sd_log_flush_head == sdp->sd_jdesc->jd_blocks) { sdp->sd_log_flush_head = 0; @@ -476,99 +476,6 @@ void gfs2_log_incr_head(struct gfs2_sbd *sdp) } } -/** - * gfs2_log_write_endio - End of I/O for a log buffer - * @bh: The buffer head - * @uptodate: I/O Status - * - */ - -static void gfs2_log_write_endio(struct buffer_head *bh, int uptodate) -{ - struct gfs2_sbd *sdp = bh->b_private; - bh->b_private = NULL; - - end_buffer_write_sync(bh, uptodate); - if (atomic_dec_and_test(&sdp->sd_log_in_flight)) - wake_up(&sdp->sd_log_flush_wait); -} - -/** - * gfs2_log_get_buf - Get and initialize a buffer to use for log control data - * @sdp: The GFS2 superblock - * - * Returns: the buffer_head - */ - -struct buffer_head *gfs2_log_get_buf(struct gfs2_sbd *sdp) -{ - u64 blkno = log_bmap(sdp, sdp->sd_log_flush_head); - struct buffer_head *bh; - - bh = sb_getblk(sdp->sd_vfs, blkno); - lock_buffer(bh); - memset(bh->b_data, 0, bh->b_size); - set_buffer_uptodate(bh); - clear_buffer_dirty(bh); - gfs2_log_incr_head(sdp); - atomic_inc(&sdp->sd_log_in_flight); - bh->b_private = sdp; - bh->b_end_io = gfs2_log_write_endio; - - return bh; -} - -/** - * gfs2_fake_write_endio - - * @bh: The buffer head - * @uptodate: The I/O Status - * - */ - -static void gfs2_fake_write_endio(struct buffer_head *bh, int uptodate) -{ - struct buffer_head *real_bh = bh->b_private; - struct gfs2_bufdata *bd = real_bh->b_private; - struct gfs2_sbd *sdp = bd->bd_gl->gl_sbd; - - end_buffer_write_sync(bh, uptodate); - free_buffer_head(bh); - unlock_buffer(real_bh); - brelse(real_bh); - if (atomic_dec_and_test(&sdp->sd_log_in_flight)) - wake_up(&sdp->sd_log_flush_wait); -} - -/** - * gfs2_log_fake_buf - Build a fake buffer head to write metadata buffer to log - * @sdp: the filesystem - * @data: the data the buffer_head should point to - * - * Returns: the log buffer descriptor - */ - -struct buffer_head *gfs2_log_fake_buf(struct gfs2_sbd *sdp, - struct buffer_head *real) -{ - u64 blkno = log_bmap(sdp, sdp->sd_log_flush_head); - struct buffer_head *bh; - - bh = alloc_buffer_head(GFP_NOFS | __GFP_NOFAIL); - atomic_set(&bh->b_count, 1); - bh->b_state = (1 << BH_Mapped) | (1 << BH_Uptodate) | (1 << BH_Lock); - set_bh_page(bh, real->b_page, bh_offset(real)); - bh->b_blocknr = blkno; - bh->b_size = sdp->sd_sb.sb_bsize; - bh->b_bdev = sdp->sd_vfs->s_bdev; - bh->b_private = real; - bh->b_end_io = gfs2_fake_write_endio; - - gfs2_log_incr_head(sdp); - atomic_inc(&sdp->sd_log_in_flight); - - return bh; -} - static void log_pull_tail(struct gfs2_sbd *sdp, unsigned int new_tail) { unsigned int dist = log_distance(sdp, new_tail, sdp->sd_log_tail); @@ -592,7 +499,7 @@ static void log_pull_tail(struct gfs2_sbd *sdp, unsigned int new_tail) static void log_write_header(struct gfs2_sbd *sdp, u32 flags, int pull) { - u64 blkno = log_bmap(sdp, sdp->sd_log_flush_head); + u64 blkno = gfs2_log_bmap(sdp, sdp->sd_log_flush_head); struct buffer_head *bh; struct gfs2_log_header *lh; unsigned int tail; |