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Commit fa6ea161 authored by Aneesh Kumar K.V's avatar Aneesh Kumar K.V Committed by Eric Van Hensbergen
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fs/9p: Fix inode i_size update in file_write 



Only update inode i_size when we write towards end of file.

Signed-off-by: default avatarAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: default avatarVenkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Signed-off-by: default avatarEric Van Hensbergen <ericvh@gmail.com>
parent 6b365604

fs/9p/vfs_file.c

+6 −2
Original line number Diff line number Diff line
@@ -440,6 +440,7 @@ v9fs_file_write_internal(struct inode *inode, struct p9_fid *fid, 
			 loff_t *offset, int invalidate)

{

	int n;

	loff_t i_size;

	size_t total = 0;

	struct p9_client *clnt;

	loff_t origin = *offset;
@@ -464,8 +465,11 @@ v9fs_file_write_internal(struct inode *inode, struct p9_fid *fid, 
			invalidate_inode_pages2_range(inode->i_mapping,

						      pg_start, pg_end);

		*offset += total;

		i_size_write(inode, i_size_read(inode) + total);

		inode->i_blocks = (i_size_read(inode) + 512 - 1) >> 9;

		i_size = i_size_read(inode);

		if (*offset > i_size) {

			inode_add_bytes(inode, *offset - i_size);

			i_size_write(inode, *offset);

		}

	}

	if (n < 0)

		return n;