Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-11 06:31:49 +00:00
Code Issues Packages Projects Releases Wiki Activity

NFS: Don't corrupt the value of pg_bytes_written in nfs_do_recoalesce()

Browse Source 
The value of mirror->pg_bytes_written should only be updated after a
successful attempt to flush out the requests on the list.

Fixes: a7d42ddb30 ("nfs: add mirroring support to pgio layer")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Trond Myklebust 2021-05-25 10:40:12 -04:00
parent 56517ab958
commit 0d0ea30935
1 changed files with 5 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
fs/nfs/pagelist.c
View File

@ -1128,17 +1128,16 @@ static void nfs_pageio_doio(struct nfs_pageio_descriptor *desc)
{
struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc);
if (!list_empty(&mirror->pg_list)) {
int error = desc->pg_ops->pg_doio(desc);
if (error < 0)
desc->pg_error = error;
else
mirror->pg_bytes_written += mirror->pg_count;
}
if (list_empty(&mirror->pg_list)) {
mirror->pg_bytes_written += mirror->pg_count;
mirror->pg_count = 0;
mirror->pg_base = 0;
mirror->pg_recoalesce = 0;
}
}
}
@ -1228,7 +1227,6 @@ static int nfs_do_recoalesce(struct nfs_pageio_descriptor *desc)
do {
list_splice_init(&mirror->pg_list, &head);
mirror->pg_bytes_written -= mirror->pg_count;
mirror->pg_count = 0;
mirror->pg_base = 0;
mirror->pg_recoalesce = 0;