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Commit baaf94cd authored by Boaz Harrosh's avatar Boaz Harrosh
Browse files

exofs: Avoid using file_fsync() 



The use of file_fsync() in exofs_file_sync() is not necessary since it
does some extra stuff not used by exofs. Open code just the parts that
are currently needed.

TODO: Farther optimization can be done to sync the sb only on inode
update of new files, Usually the sb update is not needed in exofs.

Signed-off-by: default avatarBoaz Harrosh <bharrosh@panasas.com>
parent 27d2e149

fs/exofs/exofs.h

+3 −0
Original line number Diff line number Diff line
@@ -154,6 +154,9 @@ ino_t exofs_parent_ino(struct dentry *child); 
int exofs_set_link(struct inode *, struct exofs_dir_entry *, struct page *,

		    struct inode *);



/* super.c               */

int exofs_sync_fs(struct super_block *sb, int wait);



/*********************

 * operation vectors *

 *********************/

fs/exofs/file.c

+12 −5
Original line number Diff line number Diff line
@@ -45,16 +45,23 @@ static int exofs_file_fsync(struct file *filp, struct dentry *dentry, 
{

	int ret;

	struct address_space *mapping = filp->f_mapping;

	struct inode *inode = dentry->d_inode;

	struct super_block *sb;



	ret = filemap_write_and_wait(mapping);

	if (ret)

		return ret;



	/*Note: file_fsync below also calles sync_blockdev, which is a no-op

	 *      for exofs, but other then that it does sync_inode and

	 *      sync_superblock which is what we need here.

	 */

	return file_fsync(filp, dentry, datasync);

	/* sync the inode attributes */

	ret = write_inode_now(inode, 1);



	/* This is a good place to write the sb */

	/* TODO: Sechedule an sb-sync on create */

	sb = inode->i_sb;

	if (sb->s_dirt)

		exofs_sync_fs(sb, 1);



	return ret;

}



static int exofs_flush(struct file *file, fl_owner_t id)

fs/exofs/super.c

+1 −1
Original line number Diff line number Diff line
@@ -198,7 +198,7 @@ static const struct export_operations exofs_export_ops; 
/*

 * Write the superblock to the OSD

 */

static int exofs_sync_fs(struct super_block *sb, int wait)

int exofs_sync_fs(struct super_block *sb, int wait)

{

	struct exofs_sb_info *sbi;

	struct exofs_fscb *fscb;