diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/gfs2/aops.c | 44 | ||||
| -rw-r--r-- | fs/gfs2/file.c | 4 | ||||
| -rw-r--r-- | fs/gfs2/glock.c | 13 | ||||
| -rw-r--r-- | fs/gfs2/lops.c | 18 | ||||
| -rw-r--r-- | fs/gfs2/meta_io.c | 18 | ||||
| -rw-r--r-- | fs/gfs2/meta_io.h | 26 | ||||
| -rw-r--r-- | fs/gfs2/ops_fstype.c | 53 |
7 files changed, 99 insertions, 77 deletions
diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c index ee48ad3..1f7d805 100644 --- a/fs/gfs2/aops.c +++ b/fs/gfs2/aops.c @@ -122,14 +122,13 @@ out: } /** - * gfs2_writeback_writepage - Write page for writeback mappings + * gfs2_writepage - Write page for writeback mappings * @page: The page * @wbc: The writeback control * */ -static int gfs2_writeback_writepage(struct page *page, - struct writeback_control *wbc) +static int gfs2_writepage(struct page *page, struct writeback_control *wbc) { int ret; @@ -141,32 +140,6 @@ static int gfs2_writeback_writepage(struct page *page, } /** - * gfs2_ordered_writepage - Write page for ordered data files - * @page: The page to write - * @wbc: The writeback control - * - */ - -static int gfs2_ordered_writepage(struct page *page, - struct writeback_control *wbc) -{ - struct inode *inode = page->mapping->host; - struct gfs2_inode *ip = GFS2_I(inode); - int ret; - - ret = gfs2_writepage_common(page, wbc); - if (ret <= 0) - return ret; - - if (!page_has_buffers(page)) { - create_empty_buffers(page, inode->i_sb->s_blocksize, - (1 << BH_Dirty)|(1 << BH_Uptodate)); - } - gfs2_page_add_databufs(ip, page, 0, inode->i_sb->s_blocksize-1); - return block_write_full_page(page, gfs2_get_block_noalloc, wbc); -} - -/** * __gfs2_jdata_writepage - The core of jdata writepage * @page: The page to write * @wbc: The writeback control @@ -842,6 +815,8 @@ static int gfs2_write_end(struct file *file, struct address_space *mapping, unsigned int from = pos & (PAGE_CACHE_SIZE - 1); unsigned int to = from + len; int ret; + struct gfs2_trans *tr = current->journal_info; + BUG_ON(!tr); BUG_ON(gfs2_glock_is_locked_by_me(ip->i_gl) == NULL); @@ -852,8 +827,6 @@ static int gfs2_write_end(struct file *file, struct address_space *mapping, goto failed; } - gfs2_trans_add_meta(ip->i_gl, dibh); - if (gfs2_is_stuffed(ip)) return gfs2_stuffed_write_end(inode, dibh, pos, len, copied, page); @@ -861,6 +834,11 @@ static int gfs2_write_end(struct file *file, struct address_space *mapping, gfs2_page_add_databufs(ip, page, from, to); ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata); + if (tr->tr_num_buf_new) + __mark_inode_dirty(inode, I_DIRTY_DATASYNC); + else + gfs2_trans_add_meta(ip->i_gl, dibh); + if (inode == sdp->sd_rindex) { adjust_fs_space(inode); @@ -1107,7 +1085,7 @@ cannot_release: } static const struct address_space_operations gfs2_writeback_aops = { - .writepage = gfs2_writeback_writepage, + .writepage = gfs2_writepage, .writepages = gfs2_writepages, .readpage = gfs2_readpage, .readpages = gfs2_readpages, @@ -1123,7 +1101,7 @@ static const struct address_space_operations gfs2_writeback_aops = { }; static const struct address_space_operations gfs2_ordered_aops = { - .writepage = gfs2_ordered_writepage, + .writepage = gfs2_writepage, .writepages = gfs2_writepages, .readpage = gfs2_readpage, .readpages = gfs2_readpages, diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index 72c3866..0621b46 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -650,7 +650,7 @@ static int gfs2_fsync(struct file *file, loff_t start, loff_t end, { struct address_space *mapping = file->f_mapping; struct inode *inode = mapping->host; - int sync_state = inode->i_state & (I_DIRTY_SYNC|I_DIRTY_DATASYNC); + int sync_state = inode->i_state & I_DIRTY; struct gfs2_inode *ip = GFS2_I(inode); int ret = 0, ret1 = 0; @@ -660,6 +660,8 @@ static int gfs2_fsync(struct file *file, loff_t start, loff_t end, return ret1; } + if (!gfs2_is_jdata(ip)) + sync_state &= ~I_DIRTY_PAGES; if (datasync) sync_state &= ~I_DIRTY_SYNC; diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index 544a809..722329c 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -1411,7 +1411,6 @@ __acquires(&lru_lock) if (demote_ok(gl)) handle_callback(gl, LM_ST_UNLOCKED, 0, false); WARN_ON(!test_and_clear_bit(GLF_LOCK, &gl->gl_flags)); - smp_mb__after_clear_bit(); if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0) gfs2_glock_put_nolock(gl); spin_unlock(&gl->gl_spin); @@ -1488,7 +1487,7 @@ static void examine_bucket(glock_examiner examiner, const struct gfs2_sbd *sdp, rcu_read_lock(); hlist_bl_for_each_entry_rcu(gl, pos, head, gl_list) { - if ((gl->gl_sbd == sdp) && atomic_read(&gl->gl_ref)) + if ((gl->gl_sbd == sdp) && atomic_inc_not_zero(&gl->gl_ref)) examiner(gl); } rcu_read_unlock(); @@ -1508,18 +1507,17 @@ static void glock_hash_walk(glock_examiner examiner, const struct gfs2_sbd *sdp) * thaw_glock - thaw out a glock which has an unprocessed reply waiting * @gl: The glock to thaw * - * N.B. When we freeze a glock, we leave a ref to the glock outstanding, - * so this has to result in the ref count being dropped by one. */ static void thaw_glock(struct gfs2_glock *gl) { if (!test_and_clear_bit(GLF_FROZEN, &gl->gl_flags)) - return; + goto out; set_bit(GLF_REPLY_PENDING, &gl->gl_flags); - gfs2_glock_hold(gl); - if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0) + if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0) { +out: gfs2_glock_put(gl); + } } /** @@ -1536,7 +1534,6 @@ static void clear_glock(struct gfs2_glock *gl) if (gl->gl_state != LM_ST_UNLOCKED) handle_callback(gl, LM_ST_UNLOCKED, 0, false); spin_unlock(&gl->gl_spin); - gfs2_glock_hold(gl); if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0) gfs2_glock_put(gl); } diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c index 17c5b5d..010b9fb 100644 --- a/fs/gfs2/lops.c +++ b/fs/gfs2/lops.c @@ -579,6 +579,24 @@ static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, return error; } +/** + * gfs2_meta_sync - Sync all buffers associated with a glock + * @gl: The glock + * + */ + +static void gfs2_meta_sync(struct gfs2_glock *gl) +{ + struct address_space *mapping = gfs2_glock2aspace(gl); + int error; + + filemap_fdatawrite(mapping); + error = filemap_fdatawait(mapping); + + if (error) + gfs2_io_error(gl->gl_sbd); +} + static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) { struct gfs2_inode *ip = GFS2_I(jd->jd_inode); diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c index 0da3906..9324150 100644 --- a/fs/gfs2/meta_io.c +++ b/fs/gfs2/meta_io.c @@ -98,24 +98,6 @@ const struct address_space_operations gfs2_meta_aops = { }; /** - * gfs2_meta_sync - Sync all buffers associated with a glock - * @gl: The glock - * - */ - -void gfs2_meta_sync(struct gfs2_glock *gl) -{ - struct address_space *mapping = gfs2_glock2aspace(gl); - int error; - - filemap_fdatawrite(mapping); - error = filemap_fdatawait(mapping); - - if (error) - gfs2_io_error(gl->gl_sbd); -} - -/** * gfs2_getbuf - Get a buffer with a given address space * @gl: the glock * @blkno: the block number (filesystem scope) diff --git a/fs/gfs2/meta_io.h b/fs/gfs2/meta_io.h index 0d4c843..4823b93 100644 --- a/fs/gfs2/meta_io.h +++ b/fs/gfs2/meta_io.h @@ -48,21 +48,17 @@ static inline struct gfs2_sbd *gfs2_mapping2sbd(struct address_space *mapping) return inode->i_sb->s_fs_info; } -void gfs2_meta_sync(struct gfs2_glock *gl); - -struct buffer_head *gfs2_meta_new(struct gfs2_glock *gl, u64 blkno); -int gfs2_meta_read(struct gfs2_glock *gl, u64 blkno, - int flags, struct buffer_head **bhp); -int gfs2_meta_wait(struct gfs2_sbd *sdp, struct buffer_head *bh); -struct buffer_head *gfs2_getbuf(struct gfs2_glock *gl, u64 blkno, int create); - -void gfs2_remove_from_journal(struct buffer_head *bh, struct gfs2_trans *tr, - int meta); - -void gfs2_meta_wipe(struct gfs2_inode *ip, u64 bstart, u32 blen); - -int gfs2_meta_indirect_buffer(struct gfs2_inode *ip, int height, u64 num, - struct buffer_head **bhp); +extern struct buffer_head *gfs2_meta_new(struct gfs2_glock *gl, u64 blkno); +extern int gfs2_meta_read(struct gfs2_glock *gl, u64 blkno, int flags, + struct buffer_head **bhp); +extern int gfs2_meta_wait(struct gfs2_sbd *sdp, struct buffer_head *bh); +extern struct buffer_head *gfs2_getbuf(struct gfs2_glock *gl, u64 blkno, + int create); +extern void gfs2_remove_from_journal(struct buffer_head *bh, + struct gfs2_trans *tr, int meta); +extern void gfs2_meta_wipe(struct gfs2_inode *ip, u64 bstart, u32 blen); +extern int gfs2_meta_indirect_buffer(struct gfs2_inode *ip, int height, u64 num, + struct buffer_head **bhp); static inline int gfs2_meta_inode_buffer(struct gfs2_inode *ip, struct buffer_head **bhp) diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c index 0262c19..19ff5e8 100644 --- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -646,6 +646,48 @@ static int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh) return error; } +/** + * check_journal_clean - Make sure a journal is clean for a spectator mount + * @sdp: The GFS2 superblock + * @jd: The journal descriptor + * + * Returns: 0 if the journal is clean or locked, else an error + */ +static int check_journal_clean(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd) +{ + int error; + struct gfs2_holder j_gh; + struct gfs2_log_header_host head; + struct gfs2_inode *ip; + + ip = GFS2_I(jd->jd_inode); + error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_NOEXP | + GL_EXACT | GL_NOCACHE, &j_gh); + if (error) { + fs_err(sdp, "Error locking journal for spectator mount.\n"); + return -EPERM; + } + error = gfs2_jdesc_check(jd); + if (error) { + fs_err(sdp, "Error checking journal for spectator mount.\n"); + goto out_unlock; + } + error = gfs2_find_jhead(jd, &head); + if (error) { + fs_err(sdp, "Error parsing journal for spectator mount.\n"); + goto out_unlock; + } + if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) { + error = -EPERM; + fs_err(sdp, "jid=%u: Journal is dirty, so the first mounter " + "must not be a spectator.\n", jd->jd_jid); + } + +out_unlock: + gfs2_glock_dq_uninit(&j_gh); + return error; +} + static int init_journal(struct gfs2_sbd *sdp, int undo) { struct inode *master = sdp->sd_master_dir->d_inode; @@ -732,8 +774,15 @@ static int init_journal(struct gfs2_sbd *sdp, int undo) if (sdp->sd_lockstruct.ls_first) { unsigned int x; for (x = 0; x < sdp->sd_journals; x++) { - error = gfs2_recover_journal(gfs2_jdesc_find(sdp, x), - true); + struct gfs2_jdesc *jd = gfs2_jdesc_find(sdp, x); + + if (sdp->sd_args.ar_spectator) { + error = check_journal_clean(sdp, jd); + if (error) + goto fail_jinode_gh; + continue; + } + error = gfs2_recover_journal(jd, true); if (error) { fs_err(sdp, "error recovering journal %u: %d\n", x, error); |