From 400e1286c0ec3fd13d7ac0705c3c175bcb6d2899 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Tue, 7 Dec 2021 08:44:50 -0500 Subject: ceph: conversion to new fscache API Now that the fscache API has been reworked and simplified, change ceph over to use it. With the old API, we would only instantiate a cookie when the file was open for reads. Change it to instantiate the cookie when the inode is instantiated and call use/unuse when the file is opened/closed. Also, ensure we resize the cached data on truncates, and invalidate the cache in response to the appropriate events. This will allow us to plumb in write support later. Signed-off-by: Jeff Layton Signed-off-by: David Howells Link: https://lore.kernel.org/r/20211129162907.149445-2-jlayton@kernel.org/ # v1 Link: https://lore.kernel.org/r/20211207134451.66296-2-jlayton@kernel.org/ # v2 Link: https://lore.kernel.org/r/163906984277.143852.14697110691303589000.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/163967188351.1823006.5065634844099079351.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/164021581427.640689.14128682147127509264.stgit@warthog.procyon.org.uk/ # v4 --- fs/ceph/file.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) (limited to 'fs/ceph/file.c') diff --git a/fs/ceph/file.c b/fs/ceph/file.c index 02a0a0fd9ccd..bf1017682d09 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -248,8 +248,7 @@ static int ceph_init_file(struct inode *inode, struct file *file, int fmode) switch (inode->i_mode & S_IFMT) { case S_IFREG: - ceph_fscache_register_inode_cookie(inode); - ceph_fscache_file_set_cookie(inode, file); + ceph_fscache_use_cookie(inode, file->f_mode & FMODE_WRITE); fallthrough; case S_IFDIR: ret = ceph_init_file_info(inode, file, fmode, @@ -810,6 +809,7 @@ int ceph_release(struct inode *inode, struct file *file) dout("release inode %p regular file %p\n", inode, file); WARN_ON(!list_empty(&fi->rw_contexts)); + ceph_fscache_unuse_cookie(inode, file->f_mode & FMODE_WRITE); ceph_put_fmode(ci, fi->fmode, 1); kmem_cache_free(ceph_file_cachep, fi); @@ -1206,7 +1206,11 @@ ceph_direct_read_write(struct kiocb *iocb, struct iov_iter *iter, snapc, snapc ? snapc->seq : 0); if (write) { - int ret2 = invalidate_inode_pages2_range(inode->i_mapping, + int ret2; + + ceph_fscache_invalidate(inode, true); + + ret2 = invalidate_inode_pages2_range(inode->i_mapping, pos >> PAGE_SHIFT, (pos + count - 1) >> PAGE_SHIFT); if (ret2 < 0) @@ -1417,6 +1421,7 @@ ceph_sync_write(struct kiocb *iocb, struct iov_iter *from, loff_t pos, if (ret < 0) return ret; + ceph_fscache_invalidate(inode, false); ret = invalidate_inode_pages2_range(inode->i_mapping, pos >> PAGE_SHIFT, (pos + count - 1) >> PAGE_SHIFT); @@ -2101,6 +2106,7 @@ static long ceph_fallocate(struct file *file, int mode, goto unlock; filemap_invalidate_lock(inode->i_mapping); + ceph_fscache_invalidate(inode, false); ceph_zero_pagecache_range(inode, offset, length); ret = ceph_zero_objects(inode, offset, length); @@ -2425,6 +2431,7 @@ static ssize_t __ceph_copy_file_range(struct file *src_file, loff_t src_off, goto out_caps; /* Drop dst file cached pages */ + ceph_fscache_invalidate(dst_inode, false); ret = invalidate_inode_pages2_range(dst_inode->i_mapping, dst_off >> PAGE_SHIFT, (dst_off + len) >> PAGE_SHIFT); -- cgit v1.2.3