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authorJosef Bacik <josef@redhat.com>2011-07-16 20:44:56 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2011-07-20 20:47:59 -0400
commit02c24a82187d5a628c68edfe71ae60dc135cd178 (patch)
treec8dbaba4d82e2b20ed4335910a564a1f7d90fcf6 /fs/jffs2
parent22735068d53c7115e384bc88dea95b17e76a6839 (diff)
fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlers
Btrfs needs to be able to control how filemap_write_and_wait_range() is called in fsync to make it less of a painful operation, so push down taking i_mutex and the calling of filemap_write_and_wait() down into the ->fsync() handlers. Some file systems can drop taking the i_mutex altogether it seems, like ext3 and ocfs2. For correctness sake I just pushed everything down in all cases to make sure that we keep the current behavior the same for everybody, and then each individual fs maintainer can make up their mind about what to do from there. Thanks, Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/jffs2')
-rw-r--r--fs/jffs2/file.c9
-rw-r--r--fs/jffs2/os-linux.h2
2 files changed, 9 insertions, 2 deletions
diff --git a/fs/jffs2/file.c b/fs/jffs2/file.c
index 1c0a08d711a..3989f7e09f7 100644
--- a/fs/jffs2/file.c
+++ b/fs/jffs2/file.c
@@ -27,13 +27,20 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
struct page **pagep, void **fsdata);
static int jffs2_readpage (struct file *filp, struct page *pg);
-int jffs2_fsync(struct file *filp, int datasync)
+int jffs2_fsync(struct file *filp, loff_t start, loff_t end, int datasync)
{
struct inode *inode = filp->f_mapping->host;
struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
+ int ret;
+
+ ret = filemap_write_and_wait_range(inode->i_mapping, start, end);
+ if (ret)
+ return ret;
+ mutex_lock(&inode->i_mutex);
/* Trigger GC to flush any pending writes for this inode */
jffs2_flush_wbuf_gc(c, inode->i_ino);
+ mutex_unlock(&inode->i_mutex);
return 0;
}
diff --git a/fs/jffs2/os-linux.h b/fs/jffs2/os-linux.h
index 65c6c43ca48..9c252835e8e 100644
--- a/fs/jffs2/os-linux.h
+++ b/fs/jffs2/os-linux.h
@@ -158,7 +158,7 @@ extern const struct inode_operations jffs2_dir_inode_operations;
extern const struct file_operations jffs2_file_operations;
extern const struct inode_operations jffs2_file_inode_operations;
extern const struct address_space_operations jffs2_file_address_operations;
-int jffs2_fsync(struct file *, int);
+int jffs2_fsync(struct file *, loff_t, loff_t, int);
int jffs2_do_readpage_unlock (struct inode *inode, struct page *pg);
/* ioctl.c */