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authorBenjamin Marzinski <bmarzins@redhat.com>2013-09-03 16:59:42 -0500
committerSteven Whitehouse <swhiteho@redhat.com>2013-09-05 09:04:24 +0100
commit0c9018097fe2966d80fe39e5c9ca94bb436ec369 (patch)
treea3a30053c83e22f30e3e7d3fc595ea68fbdc7afa
parent1d12d175ea3b56fdf2573bf6f168cce8f39b19e3 (diff)
GFS2: dirty inode correctly in gfs2_write_end
GFS2 was only setting I_DIRTY_DATASYNC on files that it wrote to, when it actually increased the file size. If gfs2_fsync was called without I_DIRTY_DATASYNC set, it didn't flush the incore data to the log before returning, so any metadata or journaled data changes were not getting fsynced. This meant that writes to the middle of files were not always getting fsynced properly. This patch makes gfs2 set I_DIRTY_DATASYNC whenever metadata has been updated during a write. It also make gfs2_sync flush the incore log if I_DIRTY_PAGES is set, and the file is using data journalling. This will make sure that all incore logged data gets written to disk before returning from a fsync. Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
-rw-r--r--fs/gfs2/aops.c9
-rw-r--r--fs/gfs2/file.c4
2 files changed, 10 insertions, 3 deletions
diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c
index a9ea6f07774..1f7d8057ea6 100644
--- a/fs/gfs2/aops.c
+++ b/fs/gfs2/aops.c
@@ -815,6 +815,8 @@ static int gfs2_write_end(struct file *file, struct address_space *mapping,
unsigned int from = pos & (PAGE_CACHE_SIZE - 1);
unsigned int to = from + len;
int ret;
+ struct gfs2_trans *tr = current->journal_info;
+ BUG_ON(!tr);
BUG_ON(gfs2_glock_is_locked_by_me(ip->i_gl) == NULL);
@@ -825,8 +827,6 @@ static int gfs2_write_end(struct file *file, struct address_space *mapping,
goto failed;
}
- gfs2_trans_add_meta(ip->i_gl, dibh);
-
if (gfs2_is_stuffed(ip))
return gfs2_stuffed_write_end(inode, dibh, pos, len, copied, page);
@@ -834,6 +834,11 @@ static int gfs2_write_end(struct file *file, struct address_space *mapping,
gfs2_page_add_databufs(ip, page, from, to);
ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata);
+ if (tr->tr_num_buf_new)
+ __mark_inode_dirty(inode, I_DIRTY_DATASYNC);
+ else
+ gfs2_trans_add_meta(ip->i_gl, dibh);
+
if (inode == sdp->sd_rindex) {
adjust_fs_space(inode);
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 72c3866a732..0621b46d474 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -650,7 +650,7 @@ static int gfs2_fsync(struct file *file, loff_t start, loff_t end,
{
struct address_space *mapping = file->f_mapping;
struct inode *inode = mapping->host;
- int sync_state = inode->i_state & (I_DIRTY_SYNC|I_DIRTY_DATASYNC);
+ int sync_state = inode->i_state & I_DIRTY;
struct gfs2_inode *ip = GFS2_I(inode);
int ret = 0, ret1 = 0;
@@ -660,6 +660,8 @@ static int gfs2_fsync(struct file *file, loff_t start, loff_t end,
return ret1;
}
+ if (!gfs2_is_jdata(ip))
+ sync_state &= ~I_DIRTY_PAGES;
if (datasync)
sync_state &= ~I_DIRTY_SYNC;