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From: Jeff Layton <jlayton@kernel.org>
To: ceph-devel@vger.kernel.org, linux-fscrypt@vger.kernel.org
Cc: linux-fsdevel@vger.kernel.org, idryomov@gmail.com,
	Xiubo Li <xiubli@redhat.com>
Subject: [RFC PATCH v10 33/48] ceph: add __ceph_sync_read helper support
Date: Tue, 11 Jan 2022 14:15:53 -0500	[thread overview]
Message-ID: <20220111191608.88762-34-jlayton@kernel.org> (raw)
In-Reply-To: <20220111191608.88762-1-jlayton@kernel.org>

From: Xiubo Li <xiubli@redhat.com>

Signed-off-by: Xiubo Li <xiubli@redhat.com>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/ceph/file.c  | 34 ++++++++++++++++++++++------------
 fs/ceph/super.h |  2 ++
 2 files changed, 24 insertions(+), 12 deletions(-)

diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index c65f38045f90..4309ff942943 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -883,21 +883,18 @@ enum {
  * If we get a short result from the OSD, check against i_size; we need to
  * only return a short read to the caller if we hit EOF.
  */
-static ssize_t ceph_sync_read(struct kiocb *iocb, struct iov_iter *to,
-			      int *retry_op)
+ssize_t __ceph_sync_read(struct inode *inode, loff_t *ki_pos,
+			 struct iov_iter *to, int *retry_op)
 {
-	struct file *file = iocb->ki_filp;
-	struct inode *inode = file_inode(file);
 	struct ceph_inode_info *ci = ceph_inode(inode);
 	struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
 	struct ceph_osd_client *osdc = &fsc->client->osdc;
 	ssize_t ret;
-	u64 off = iocb->ki_pos;
+	u64 off = *ki_pos;
 	u64 len = iov_iter_count(to);
 	u64 i_size = i_size_read(inode);
 
-	dout("sync_read on file %p %llu~%u %s\n", file, off, (unsigned)len,
-	     (file->f_flags & O_DIRECT) ? "O_DIRECT" : "");
+	dout("sync_read on inode %p %llu~%u\n", inode, *ki_pos, (unsigned)len);
 
 	if (!len)
 		return 0;
@@ -999,14 +996,14 @@ static ssize_t ceph_sync_read(struct kiocb *iocb, struct iov_iter *to,
 			break;
 	}
 
-	if (off > iocb->ki_pos) {
+	if (off > *ki_pos) {
 		if (off >= i_size) {
 			*retry_op = CHECK_EOF;
-			ret = i_size - iocb->ki_pos;
-			iocb->ki_pos = i_size;
+			ret = i_size - *ki_pos;
+			*ki_pos = i_size;
 		} else {
-			ret = off - iocb->ki_pos;
-			iocb->ki_pos = off;
+			ret = off - *ki_pos;
+			*ki_pos = off;
 		}
 	}
 
@@ -1014,6 +1011,19 @@ static ssize_t ceph_sync_read(struct kiocb *iocb, struct iov_iter *to,
 	return ret;
 }
 
+static ssize_t ceph_sync_read(struct kiocb *iocb, struct iov_iter *to,
+			      int *retry_op)
+{
+	struct file *file = iocb->ki_filp;
+	struct inode *inode = file_inode(file);
+
+	dout("sync_read on file %p %llu~%u %s\n", file, iocb->ki_pos,
+	     (unsigned)iov_iter_count(to),
+	     (file->f_flags & O_DIRECT) ? "O_DIRECT" : "");
+
+	return __ceph_sync_read(inode, &iocb->ki_pos, to, retry_op);
+}
+
 struct ceph_aio_request {
 	struct kiocb *iocb;
 	size_t total_len;
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index c60ff747672a..eb91586ad8f3 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -1258,6 +1258,8 @@ extern int ceph_renew_caps(struct inode *inode, int fmode);
 extern int ceph_open(struct inode *inode, struct file *file);
 extern int ceph_atomic_open(struct inode *dir, struct dentry *dentry,
 			    struct file *file, unsigned flags, umode_t mode);
+extern ssize_t __ceph_sync_read(struct inode *inode, loff_t *ki_pos,
+				struct iov_iter *to, int *retry_op);
 extern int ceph_release(struct inode *inode, struct file *filp);
 extern void ceph_fill_inline_data(struct inode *inode, struct page *locked_page,
 				  char *data, size_t len);
-- 
2.34.1


  parent reply	other threads:[~2022-01-11 19:17 UTC|newest]

Thread overview: 84+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-11 19:15 [RFC PATCH v10 00/48] ceph+fscrypt: full support Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 01/48] vfs: export new_inode_pseudo Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 02/48] fscrypt: export fscrypt_base64url_encode and fscrypt_base64url_decode Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 03/48] fscrypt: export fscrypt_fname_encrypt and fscrypt_fname_encrypted_size Jeff Layton
2022-01-27  1:58   ` Eric Biggers
2022-01-11 19:15 ` [RFC PATCH v10 04/48] fscrypt: add fscrypt_context_for_new_inode Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 05/48] ceph: preallocate inode for ops that may create one Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 06/48] ceph: crypto context handling for ceph Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 07/48] ceph: parse new fscrypt_auth and fscrypt_file fields in inode traces Jeff Layton
2022-02-17  8:25   ` Xiubo Li
2022-02-17 11:39     ` Jeff Layton
2022-02-18  1:09       ` Xiubo Li
2022-01-11 19:15 ` [RFC PATCH v10 08/48] ceph: add fscrypt_* handling to caps.c Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 09/48] ceph: add ability to set fscrypt_auth via setattr Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 10/48] ceph: implement -o test_dummy_encryption mount option Jeff Layton
2022-02-11 13:50   ` Luís Henriques
2022-02-11 14:52     ` Jeff Layton
2022-02-14  9:29       ` Luís Henriques
2022-01-11 19:15 ` [RFC PATCH v10 11/48] ceph: decode alternate_name in lease info Jeff Layton
2022-03-01 10:57   ` Xiubo Li
2022-03-01 11:18     ` Xiubo Li
2022-03-01 13:10     ` Jeff Layton
2022-03-01 13:51       ` Xiubo Li
2022-03-01 13:57         ` Jeff Layton
2022-03-01 14:07           ` Xiubo Li
2022-03-01 14:14             ` Jeff Layton
2022-03-01 14:30               ` Xiubo Li
2022-01-11 19:15 ` [RFC PATCH v10 12/48] ceph: add fscrypt ioctls Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 13/48] ceph: make ceph_msdc_build_path use ref-walk Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 14/48] ceph: add encrypted fname handling to ceph_mdsc_build_path Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 15/48] ceph: send altname in MClientRequest Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 16/48] ceph: encode encrypted name in dentry release Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 17/48] ceph: properly set DCACHE_NOKEY_NAME flag in lookup Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 18/48] ceph: make d_revalidate call fscrypt revalidator for encrypted dentries Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 19/48] ceph: add helpers for converting names for userland presentation Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 20/48] ceph: add fscrypt support to ceph_fill_trace Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 21/48] ceph: add support to readdir for encrypted filenames Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 22/48] ceph: create symlinks with encrypted and base64-encoded targets Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 23/48] ceph: make ceph_get_name decrypt filenames Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 24/48] ceph: add a new ceph.fscrypt.auth vxattr Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 25/48] ceph: add some fscrypt guardrails Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 26/48] ceph: don't allow changing layout on encrypted files/directories Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 27/48] libceph: add CEPH_OSD_OP_ASSERT_VER support Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 28/48] ceph: size handling for encrypted inodes in cap updates Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 29/48] ceph: fscrypt_file field handling in MClientRequest messages Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 30/48] ceph: get file size from fscrypt_file when present in inode traces Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 31/48] ceph: handle fscrypt fields in cap messages from MDS Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 32/48] ceph: add __ceph_get_caps helper support Jeff Layton
2022-01-11 19:15 ` Jeff Layton [this message]
2022-01-11 19:15 ` [RFC PATCH v10 34/48] ceph: add object version support for sync read Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 35/48] ceph: add infrastructure for file encryption and decryption Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 36/48] ceph: add truncate size handling support for fscrypt Jeff Layton
2022-01-12  8:41   ` Xiubo Li
2022-01-11 19:15 ` [RFC PATCH v10 37/48] libceph: allow ceph_osdc_new_request to accept a multi-op read Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 38/48] ceph: disable fallocate for encrypted inodes Jeff Layton
2022-01-11 19:15 ` [RFC PATCH v10 39/48] ceph: disable copy offload on " Jeff Layton
2022-01-11 19:16 ` [RFC PATCH v10 40/48] ceph: don't use special DIO path for " Jeff Layton
2022-01-11 19:16 ` [RFC PATCH v10 41/48] ceph: set encryption context on open Jeff Layton
2022-01-11 19:16 ` [RFC PATCH v10 42/48] ceph: align data in pages in ceph_sync_write Jeff Layton
2022-01-11 19:16 ` [RFC PATCH v10 43/48] ceph: add read/modify/write to ceph_sync_write Jeff Layton
2022-01-19  3:21   ` Xiubo Li
2022-01-19  5:08     ` Xiubo Li
2022-01-19 11:06       ` Jeff Layton
2022-01-11 19:16 ` [RFC PATCH v10 44/48] ceph: plumb in decryption during sync reads Jeff Layton
2022-01-19  5:18   ` Xiubo Li
2022-01-19 18:49     ` Jeff Layton
2022-01-11 19:16 ` [RFC PATCH v10 45/48] ceph: set i_blkbits to crypto block size for encrypted inodes Jeff Layton
2022-01-11 19:16 ` [RFC PATCH v10 46/48] ceph: add fscrypt decryption support to ceph_netfs_issue_op Jeff Layton
2022-01-11 19:16 ` [RFC PATCH v10 47/48] ceph: add encryption support to writepage Jeff Layton
2022-01-11 19:16 ` [RFC PATCH v10 48/48] ceph: fscrypt support for writepages Jeff Layton
2022-01-11 19:26 ` [RFC PATCH v10 00/48] ceph+fscrypt: full support Jeff Layton
2022-01-27  2:14 ` Eric Biggers
2022-01-27 11:08   ` Jeff Layton
2022-01-28 20:39     ` Eric Biggers
2022-01-28 20:47       ` Jeff Layton
2022-02-14  9:37 ` Xiubo Li
2022-02-14 11:33   ` Jeff Layton
2022-02-14 12:08     ` Xiubo Li
2022-02-15  0:44       ` Xiubo Li
2022-02-14 17:57 ` Luís Henriques
2022-02-14 18:39   ` Jeff Layton
2022-02-14 21:00     ` Luís Henriques
2022-02-14 21:10       ` Jeff Layton
2022-02-16 16:13     ` Luís Henriques

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