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Diffstat (limited to 'fs/ocfs2/file.c')
-rw-r--r--fs/ocfs2/file.c96
1 files changed, 55 insertions, 41 deletions
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index 81296b4e3646..77b4c04a2809 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -36,6 +36,7 @@
#include <linux/writeback.h>
#include <linux/falloc.h>
#include <linux/quotaops.h>
+#include <linux/blkdev.h>
#define MLOG_MASK_PREFIX ML_INODE
#include <cluster/masklog.h>
@@ -63,12 +64,6 @@
#include "buffer_head_io.h"
-static int ocfs2_sync_inode(struct inode *inode)
-{
- filemap_fdatawrite(inode->i_mapping);
- return sync_mapping_buffers(inode->i_mapping);
-}
-
static int ocfs2_init_file_private(struct inode *inode, struct file *file)
{
struct ocfs2_file_private *fp;
@@ -179,19 +174,22 @@ static int ocfs2_sync_file(struct file *file, int datasync)
{
int err = 0;
journal_t *journal;
- struct dentry *dentry = file->f_path.dentry;
struct inode *inode = file->f_mapping->host;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
- mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", file, dentry, datasync,
- dentry->d_name.len, dentry->d_name.name);
-
- err = ocfs2_sync_inode(dentry->d_inode);
- if (err)
- goto bail;
+ mlog_entry("(0x%p, %d, 0x%p, '%.*s')\n", file, datasync,
+ file->f_path.dentry, file->f_path.dentry->d_name.len,
+ file->f_path.dentry->d_name.name);
- if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
+ if (datasync && !(inode->i_state & I_DIRTY_DATASYNC)) {
+ /*
+ * We still have to flush drive's caches to get data to the
+ * platter
+ */
+ if (osb->s_mount_opt & OCFS2_MOUNT_BARRIER)
+ blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL);
goto bail;
+ }
journal = osb->journal->j_journal;
err = jbd2_journal_force_commit(journal);
@@ -361,7 +359,7 @@ static int ocfs2_cow_file_pos(struct inode *inode,
if (!(ext_flags & OCFS2_EXT_REFCOUNTED))
goto out;
- return ocfs2_refcount_cow(inode, fe_bh, cpos, 1, cpos+1);
+ return ocfs2_refcount_cow(inode, NULL, fe_bh, cpos, 1, cpos+1);
out:
return status;
@@ -774,7 +772,7 @@ static int ocfs2_write_zero_page(struct inode *inode, u64 abs_from,
BUG_ON(abs_to > (((u64)index + 1) << PAGE_CACHE_SHIFT));
BUG_ON(abs_from & (inode->i_blkbits - 1));
- page = grab_cache_page(mapping, index);
+ page = find_or_create_page(mapping, index, GFP_NOFS);
if (!page) {
ret = -ENOMEM;
mlog_errno(ret);
@@ -798,13 +796,12 @@ static int ocfs2_write_zero_page(struct inode *inode, u64 abs_from,
block_end = block_start + (1 << inode->i_blkbits);
/*
- * block_start is block-aligned. Bump it by one to
- * force ocfs2_{prepare,commit}_write() to zero the
+ * block_start is block-aligned. Bump it by one to force
+ * __block_write_begin and block_commit_write to zero the
* whole block.
*/
- ret = ocfs2_prepare_write_nolock(inode, page,
- block_start + 1,
- block_start + 1);
+ ret = __block_write_begin(page, block_start + 1, 0,
+ ocfs2_get_block);
if (ret < 0) {
mlog_errno(ret);
goto out_unlock;
@@ -904,8 +901,8 @@ static int ocfs2_zero_extend_get_range(struct inode *inode,
zero_clusters = last_cpos - zero_cpos;
if (needs_cow) {
- rc = ocfs2_refcount_cow(inode, di_bh, zero_cpos, zero_clusters,
- UINT_MAX);
+ rc = ocfs2_refcount_cow(inode, NULL, di_bh, zero_cpos,
+ zero_clusters, UINT_MAX);
if (rc) {
mlog_errno(rc);
goto out;
@@ -2053,6 +2050,7 @@ out:
}
static int ocfs2_prepare_inode_for_refcount(struct inode *inode,
+ struct file *file,
loff_t pos, size_t count,
int *meta_level)
{
@@ -2070,7 +2068,7 @@ static int ocfs2_prepare_inode_for_refcount(struct inode *inode,
*meta_level = 1;
- ret = ocfs2_refcount_cow(inode, di_bh, cpos, clusters, UINT_MAX);
+ ret = ocfs2_refcount_cow(inode, file, di_bh, cpos, clusters, UINT_MAX);
if (ret)
mlog_errno(ret);
out:
@@ -2078,7 +2076,7 @@ out:
return ret;
}
-static int ocfs2_prepare_inode_for_write(struct dentry *dentry,
+static int ocfs2_prepare_inode_for_write(struct file *file,
loff_t *ppos,
size_t count,
int appending,
@@ -2086,6 +2084,7 @@ static int ocfs2_prepare_inode_for_write(struct dentry *dentry,
int *has_refcount)
{
int ret = 0, meta_level = 0;
+ struct dentry *dentry = file->f_path.dentry;
struct inode *inode = dentry->d_inode;
loff_t saved_pos, end;
@@ -2141,6 +2140,7 @@ static int ocfs2_prepare_inode_for_write(struct dentry *dentry,
meta_level = -1;
ret = ocfs2_prepare_inode_for_refcount(inode,
+ file,
saved_pos,
count,
&meta_level);
@@ -2223,6 +2223,8 @@ static ssize_t ocfs2_file_aio_write(struct kiocb *iocb,
struct file *file = iocb->ki_filp;
struct inode *inode = file->f_path.dentry->d_inode;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ int full_coherency = !(osb->s_mount_opt &
+ OCFS2_MOUNT_COHERENCY_BUFFERED);
mlog_entry("(0x%p, %u, '%.*s')\n", file,
(unsigned int)nr_segs,
@@ -2246,16 +2248,39 @@ relock:
have_alloc_sem = 1;
}
- /* concurrent O_DIRECT writes are allowed */
- rw_level = !direct_io;
+ /*
+ * Concurrent O_DIRECT writes are allowed with
+ * mount_option "coherency=buffered".
+ */
+ rw_level = (!direct_io || full_coherency);
+
ret = ocfs2_rw_lock(inode, rw_level);
if (ret < 0) {
mlog_errno(ret);
goto out_sems;
}
+ /*
+ * O_DIRECT writes with "coherency=full" need to take EX cluster
+ * inode_lock to guarantee coherency.
+ */
+ if (direct_io && full_coherency) {
+ /*
+ * We need to take and drop the inode lock to force
+ * other nodes to drop their caches. Buffered I/O
+ * already does this in write_begin().
+ */
+ ret = ocfs2_inode_lock(inode, NULL, 1);
+ if (ret < 0) {
+ mlog_errno(ret);
+ goto out_sems;
+ }
+
+ ocfs2_inode_unlock(inode, 1);
+ }
+
can_do_direct = direct_io;
- ret = ocfs2_prepare_inode_for_write(file->f_path.dentry, ppos,
+ ret = ocfs2_prepare_inode_for_write(file, ppos,
iocb->ki_left, appending,
&can_do_direct, &has_refcount);
if (ret < 0) {
@@ -2303,17 +2328,6 @@ relock:
written = generic_file_direct_write(iocb, iov, &nr_segs, *ppos,
ppos, count, ocount);
if (written < 0) {
- /*
- * direct write may have instantiated a few
- * blocks outside i_size. Trim these off again.
- * Don't need i_size_read because we hold i_mutex.
- *
- * XXX(truncate): this looks buggy because ocfs2 did not
- * actually implement ->truncate. Take a look at
- * the new truncate sequence and update this accordingly
- */
- if (*ppos + count > inode->i_size)
- truncate_setsize(inode, inode->i_size);
ret = written;
goto out_dio;
}
@@ -2329,7 +2343,7 @@ out_dio:
BUG_ON(ret == -EIOCBQUEUED && !(file->f_flags & O_DIRECT));
if (((file->f_flags & O_DSYNC) && !direct_io) || IS_SYNC(inode) ||
- ((file->f_flags & O_DIRECT) && has_refcount)) {
+ ((file->f_flags & O_DIRECT) && !direct_io)) {
ret = filemap_fdatawrite_range(file->f_mapping, pos,
pos + count - 1);
if (ret < 0)
@@ -2385,7 +2399,7 @@ static int ocfs2_splice_to_file(struct pipe_inode_info *pipe,
{
int ret;
- ret = ocfs2_prepare_inode_for_write(out->f_path.dentry, &sd->pos,
+ ret = ocfs2_prepare_inode_for_write(out, &sd->pos,
sd->total_len, 0, NULL, NULL);
if (ret < 0) {
mlog_errno(ret);
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-27 16:53:29 +0300