diff options
Diffstat (limited to 'fs/gfs2/meta_io.c')
| -rw-r--r-- | fs/gfs2/meta_io.c | 164 |
1 files changed, 0 insertions, 164 deletions
diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c index d0d981d..3912d6a 100644 --- a/fs/gfs2/meta_io.c +++ b/fs/gfs2/meta_io.c @@ -34,11 +34,6 @@ #include "util.h" #include "ops_address.h" -#define buffer_busy(bh) \ -((bh)->b_state & ((1ul << BH_Dirty) | (1ul << BH_Lock) | (1ul << BH_Pinned))) -#define buffer_in_io(bh) \ -((bh)->b_state & ((1ul << BH_Dirty) | (1ul << BH_Lock))) - static int aspace_get_block(struct inode *inode, sector_t lblock, struct buffer_head *bh_result, int create) { @@ -92,165 +87,6 @@ void gfs2_aspace_put(struct inode *aspace) } /** - * gfs2_ail1_start_one - Start I/O on a part of the AIL - * @sdp: the filesystem - * @tr: the part of the AIL - * - */ - -void gfs2_ail1_start_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai) -{ - struct gfs2_bufdata *bd, *s; - struct buffer_head *bh; - int retry; - - BUG_ON(!spin_is_locked(&sdp->sd_log_lock)); - - do { - retry = 0; - - list_for_each_entry_safe_reverse(bd, s, &ai->ai_ail1_list, - bd_ail_st_list) { - bh = bd->bd_bh; - - gfs2_assert(sdp, bd->bd_ail == ai); - - if (!buffer_busy(bh)) { - if (!buffer_uptodate(bh)) { - gfs2_log_unlock(sdp); - gfs2_io_error_bh(sdp, bh); - gfs2_log_lock(sdp); - } - list_move(&bd->bd_ail_st_list, &ai->ai_ail2_list); - continue; - } - - if (!buffer_dirty(bh)) - continue; - - list_move(&bd->bd_ail_st_list, &ai->ai_ail1_list); - - gfs2_log_unlock(sdp); - wait_on_buffer(bh); - ll_rw_block(WRITE, 1, &bh); - gfs2_log_lock(sdp); - - retry = 1; - break; - } - } while (retry); -} - -/** - * gfs2_ail1_empty_one - Check whether or not a trans in the AIL has been synced - * @sdp: the filesystem - * @ai: the AIL entry - * - */ - -int gfs2_ail1_empty_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai, int flags) -{ - struct gfs2_bufdata *bd, *s; - struct buffer_head *bh; - - list_for_each_entry_safe_reverse(bd, s, &ai->ai_ail1_list, - bd_ail_st_list) { - bh = bd->bd_bh; - - gfs2_assert(sdp, bd->bd_ail == ai); - - if (buffer_busy(bh)) { - if (flags & DIO_ALL) - continue; - else - break; - } - - if (!buffer_uptodate(bh)) - gfs2_io_error_bh(sdp, bh); - - list_move(&bd->bd_ail_st_list, &ai->ai_ail2_list); - } - - return list_empty(&ai->ai_ail1_list); -} - -/** - * gfs2_ail2_empty_one - Check whether or not a trans in the AIL has been synced - * @sdp: the filesystem - * @ai: the AIL entry - * - */ - -void gfs2_ail2_empty_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai) -{ - struct list_head *head = &ai->ai_ail2_list; - struct gfs2_bufdata *bd; - - while (!list_empty(head)) { - bd = list_entry(head->prev, struct gfs2_bufdata, - bd_ail_st_list); - gfs2_assert(sdp, bd->bd_ail == ai); - bd->bd_ail = NULL; - list_del(&bd->bd_ail_st_list); - list_del(&bd->bd_ail_gl_list); - atomic_dec(&bd->bd_gl->gl_ail_count); - brelse(bd->bd_bh); - } -} - -/** - * ail_empty_gl - remove all buffers for a given lock from the AIL - * @gl: the glock - * - * None of the buffers should be dirty, locked, or pinned. - */ - -void gfs2_ail_empty_gl(struct gfs2_glock *gl) -{ - struct gfs2_sbd *sdp = gl->gl_sbd; - unsigned int blocks; - struct list_head *head = &gl->gl_ail_list; - struct gfs2_bufdata *bd; - struct buffer_head *bh; - u64 blkno; - int error; - - blocks = atomic_read(&gl->gl_ail_count); - if (!blocks) - return; - - error = gfs2_trans_begin(sdp, 0, blocks); - if (gfs2_assert_withdraw(sdp, !error)) - return; - - gfs2_log_lock(sdp); - while (!list_empty(head)) { - bd = list_entry(head->next, struct gfs2_bufdata, - bd_ail_gl_list); - bh = bd->bd_bh; - blkno = bh->b_blocknr; - gfs2_assert_withdraw(sdp, !buffer_busy(bh)); - - bd->bd_ail = NULL; - list_del(&bd->bd_ail_st_list); - list_del(&bd->bd_ail_gl_list); - atomic_dec(&gl->gl_ail_count); - brelse(bh); - gfs2_log_unlock(sdp); - - gfs2_trans_add_revoke(sdp, blkno); - - gfs2_log_lock(sdp); - } - gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count)); - gfs2_log_unlock(sdp); - - gfs2_trans_end(sdp); - gfs2_log_flush(sdp, NULL); -} - -/** * gfs2_meta_inval - Invalidate all buffers associated with a glock * @gl: the glock * |