From: Ira Weiny ira.weiny@intel.com
The kmap() calls in this FS are localized to a single thread. To avoid the over head of global PKRS updates use the new kmap_thread() call.
Cc: David Howells dhowells@redhat.com Signed-off-by: Ira Weiny ira.weiny@intel.com --- fs/afs/dir.c | 16 ++++++++-------- fs/afs/dir_edit.c | 16 ++++++++-------- fs/afs/mntpt.c | 4 ++-- fs/afs/write.c | 4 ++-- 4 files changed, 20 insertions(+), 20 deletions(-)
diff --git a/fs/afs/dir.c b/fs/afs/dir.c index 1d2e61e0ab04..5d01cdb590de 100644 --- a/fs/afs/dir.c +++ b/fs/afs/dir.c @@ -127,14 +127,14 @@ static bool afs_dir_check_page(struct afs_vnode *dvnode, struct page *page, qty /= sizeof(union afs_xdr_dir_block);
/* check them */ - dbuf = kmap(page); + dbuf = kmap_thread(page); for (tmp = 0; tmp < qty; tmp++) { if (dbuf->blocks[tmp].hdr.magic != AFS_DIR_MAGIC) { printk("kAFS: %s(%lx): bad magic %d/%d is %04hx\n", __func__, dvnode->vfs_inode.i_ino, tmp, qty, ntohs(dbuf->blocks[tmp].hdr.magic)); trace_afs_dir_check_failed(dvnode, off, i_size); - kunmap(page); + kunmap_thread(page); trace_afs_file_error(dvnode, -EIO, afs_file_error_dir_bad_magic); goto error; } @@ -146,7 +146,7 @@ static bool afs_dir_check_page(struct afs_vnode *dvnode, struct page *page, ((u8 *)&dbuf->blocks[tmp])[AFS_DIR_BLOCK_SIZE - 1] = 0; }
- kunmap(page); + kunmap_thread(page);
checked: afs_stat_v(dvnode, n_read_dir); @@ -177,13 +177,13 @@ static bool afs_dir_check_pages(struct afs_vnode *dvnode, struct afs_read *req) req->pos, req->index, req->nr_pages, req->offset);
for (i = 0; i < req->nr_pages; i++) { - dbuf = kmap(req->pages[i]); + dbuf = kmap_thread(req->pages[i]); for (j = 0; j < qty; j++) { union afs_xdr_dir_block *block = &dbuf->blocks[j];
pr_warn("[%02x] %32phN\n", i * qty + j, block); } - kunmap(req->pages[i]); + kunmap_thread(req->pages[i]); } return false; } @@ -481,7 +481,7 @@ static int afs_dir_iterate(struct inode *dir, struct dir_context *ctx,
limit = blkoff & ~(PAGE_SIZE - 1);
- dbuf = kmap(page); + dbuf = kmap_thread(page);
/* deal with the individual blocks stashed on this page */ do { @@ -489,7 +489,7 @@ static int afs_dir_iterate(struct inode *dir, struct dir_context *ctx, sizeof(union afs_xdr_dir_block)]; ret = afs_dir_iterate_block(dvnode, ctx, dblock, blkoff); if (ret != 1) { - kunmap(page); + kunmap_thread(page); goto out; }
@@ -497,7 +497,7 @@ static int afs_dir_iterate(struct inode *dir, struct dir_context *ctx,
} while (ctx->pos < dir->i_size && blkoff < limit);
- kunmap(page); + kunmap_thread(page); ret = 0; }
diff --git a/fs/afs/dir_edit.c b/fs/afs/dir_edit.c index b108528bf010..35ed6828e205 100644 --- a/fs/afs/dir_edit.c +++ b/fs/afs/dir_edit.c @@ -218,7 +218,7 @@ void afs_edit_dir_add(struct afs_vnode *vnode, need_slots = round_up(12 + name->len + 1 + 4, AFS_DIR_DIRENT_SIZE); need_slots /= AFS_DIR_DIRENT_SIZE;
- meta_page = kmap(page0); + meta_page = kmap_thread(page0); meta = &meta_page->blocks[0]; if (i_size == 0) goto new_directory; @@ -247,7 +247,7 @@ void afs_edit_dir_add(struct afs_vnode *vnode, set_page_private(page, 1); SetPagePrivate(page); } - dir_page = kmap(page); + dir_page = kmap_thread(page); }
/* Abandon the edit if we got a callback break. */ @@ -284,7 +284,7 @@ void afs_edit_dir_add(struct afs_vnode *vnode,
if (page != page0) { unlock_page(page); - kunmap(page); + kunmap_thread(page); put_page(page); } } @@ -323,7 +323,7 @@ void afs_edit_dir_add(struct afs_vnode *vnode, afs_set_contig_bits(block, slot, need_slots); if (page != page0) { unlock_page(page); - kunmap(page); + kunmap_thread(page); put_page(page); }
@@ -337,7 +337,7 @@ void afs_edit_dir_add(struct afs_vnode *vnode,
out_unmap: unlock_page(page0); - kunmap(page0); + kunmap_thread(page0); put_page(page0); _leave(""); return; @@ -346,7 +346,7 @@ void afs_edit_dir_add(struct afs_vnode *vnode, trace_afs_edit_dir(vnode, why, afs_edit_dir_create_inval, 0, 0, 0, 0, name->name); clear_bit(AFS_VNODE_DIR_VALID, &vnode->flags); if (page != page0) { - kunmap(page); + kunmap_thread(page); put_page(page); } goto out_unmap; @@ -398,7 +398,7 @@ void afs_edit_dir_remove(struct afs_vnode *vnode, need_slots = round_up(12 + name->len + 1 + 4, AFS_DIR_DIRENT_SIZE); need_slots /= AFS_DIR_DIRENT_SIZE;
- meta_page = kmap(page0); + meta_page = kmap_thread(page0); meta = &meta_page->blocks[0];
/* Find a page that has sufficient slots available. Each VM page @@ -410,7 +410,7 @@ void afs_edit_dir_remove(struct afs_vnode *vnode, page = find_lock_page(vnode->vfs_inode.i_mapping, index); if (!page) goto error; - dir_page = kmap(page); + dir_page = kmap_thread(page); } else { page = page0; dir_page = meta_page; diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c index 79bc5f1338ed..562454e2fd5c 100644 --- a/fs/afs/mntpt.c +++ b/fs/afs/mntpt.c @@ -139,11 +139,11 @@ static int afs_mntpt_set_params(struct fs_context *fc, struct dentry *mntpt) return ret; }
- buf = kmap(page); + buf = kmap_thread(page); ret = -EINVAL; if (buf[size - 1] == '.') ret = vfs_parse_fs_string(fc, "source", buf, size - 1); - kunmap(page); + kunmap_thread(page); put_page(page); if (ret < 0) return ret; diff --git a/fs/afs/write.c b/fs/afs/write.c index 4b2265cb1891..c56e5b4db4ae 100644 --- a/fs/afs/write.c +++ b/fs/afs/write.c @@ -38,9 +38,9 @@ static int afs_fill_page(struct afs_vnode *vnode, struct key *key, if (pos >= vnode->vfs_inode.i_size) { p = pos & ~PAGE_MASK; ASSERTCMP(p + len, <=, PAGE_SIZE); - data = kmap(page); + data = kmap_thread(page); memset(data + p, 0, len); - kunmap(page); + kunmap_thread(page); return 0; }