diff options
Diffstat (limited to 'fs/gfs2/ops_address.c')
| -rw-r--r-- | fs/gfs2/ops_address.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/fs/gfs2/ops_address.c b/fs/gfs2/ops_address.c index fca69f1..bdd4d6b4 100644 --- a/fs/gfs2/ops_address.c +++ b/fs/gfs2/ops_address.c @@ -237,14 +237,22 @@ static int gfs2_readpage(struct file *file, struct page *page) struct gfs2_sbd *sdp = GFS2_SB(page->mapping->host); struct gfs2_holder gh; int error; + int do_unlock = 0; if (likely(file != &gfs2_internal_file_sentinal)) { + if (file) { + struct gfs2_file *gf = file->private_data; + if (test_bit(GFF_EXLOCK, &gf->f_flags)) + goto skip_lock; + } gfs2_holder_init(ip->i_gl, LM_ST_SHARED, GL_ATIME|GL_AOP, &gh); + do_unlock = 1; error = gfs2_glock_nq_m_atime(1, &gh); if (unlikely(error)) goto out_unlock; } +skip_lock: if (gfs2_is_stuffed(ip)) { error = stuffed_readpage(ip, page); unlock_page(page); @@ -262,7 +270,7 @@ out: return error; out_unlock: unlock_page(page); - if (file != &gfs2_internal_file_sentinal) + if (do_unlock) gfs2_holder_uninit(&gh); goto out; } @@ -291,17 +299,24 @@ static int gfs2_readpages(struct file *file, struct address_space *mapping, struct gfs2_holder gh; unsigned page_idx; int ret; + int do_unlock = 0; if (likely(file != &gfs2_internal_file_sentinal)) { + if (file) { + struct gfs2_file *gf = file->private_data; + if (test_bit(GFF_EXLOCK, &gf->f_flags)) + goto skip_lock; + } gfs2_holder_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_TRY_1CB|GL_ATIME|GL_AOP, &gh); + do_unlock = 1; ret = gfs2_glock_nq_m_atime(1, &gh); if (ret == GLR_TRYFAILED) goto out_noerror; if (unlikely(ret)) goto out_unlock; } - +skip_lock: if (gfs2_is_stuffed(ip)) { struct pagevec lru_pvec; pagevec_init(&lru_pvec, 0); @@ -326,7 +341,7 @@ static int gfs2_readpages(struct file *file, struct address_space *mapping, ret = mpage_readpages(mapping, pages, nr_pages, gfs2_get_block); } - if (likely(file != &gfs2_internal_file_sentinal)) { + if (do_unlock) { gfs2_glock_dq_m(1, &gh); gfs2_holder_uninit(&gh); } @@ -344,7 +359,7 @@ out_unlock: unlock_page(page); page_cache_release(page); } - if (likely(file != &gfs2_internal_file_sentinal)) + if (do_unlock) gfs2_holder_uninit(&gh); goto out; } |
