xiaomi-sm8450/android_kernel_xiaomi_sm8450
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Merge branch 'bugfixes'

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This commit is contained in:
Trond Myklebust
2017-08-20 13:04:12 -04:00
parent b7561e5186 53a75f22e7
commit 7af7a5963c
7 changed files with 70 additions and 45 deletions
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77
fs/nfs/pagelist.c
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@@ -682,12 +682,8 @@ void nfs_pageio_init(struct nfs_pageio_descriptor *desc,
const struct nfs_pgio_completion_ops *compl_ops,
const struct nfs_rw_ops *rw_ops,
size_t bsize,
int io_flags,
gfp_t gfp_flags)
int io_flags)
{
struct nfs_pgio_mirror *new;
int i;
desc->pg_moreio = 0;
desc->pg_inode = inode;
desc->pg_ops = pg_ops;
@@ -703,23 +699,10 @@ void nfs_pageio_init(struct nfs_pageio_descriptor *desc,
desc->pg_mirror_count = 1;
desc->pg_mirror_idx = 0;
if (pg_ops->pg_get_mirror_count) {
/* until we have a request, we don't have an lseg and no
* idea how many mirrors there will be */
new = kcalloc(NFS_PAGEIO_DESCRIPTOR_MIRROR_MAX,
sizeof(struct nfs_pgio_mirror), gfp_flags);
desc->pg_mirrors_dynamic = new;
desc->pg_mirrors = new;
for (i = 0; i < NFS_PAGEIO_DESCRIPTOR_MIRROR_MAX; i++)
nfs_pageio_mirror_init(&desc->pg_mirrors[i], bsize);
} else {
desc->pg_mirrors_dynamic = NULL;
desc->pg_mirrors = desc->pg_mirrors_static;
nfs_pageio_mirror_init(&desc->pg_mirrors[0], bsize);
}
desc->pg_mirrors_dynamic = NULL;
desc->pg_mirrors = desc->pg_mirrors_static;
nfs_pageio_mirror_init(&desc->pg_mirrors[0], bsize);
}
EXPORT_SYMBOL_GPL(nfs_pageio_init);
/**
* nfs_pgio_result - Basic pageio error handling
@@ -836,32 +819,52 @@ static int nfs_generic_pg_pgios(struct nfs_pageio_descriptor *desc)
return ret;
}
static struct nfs_pgio_mirror *
nfs_pageio_alloc_mirrors(struct nfs_pageio_descriptor *desc,
unsigned int mirror_count)
{
struct nfs_pgio_mirror *ret;
unsigned int i;
kfree(desc->pg_mirrors_dynamic);
desc->pg_mirrors_dynamic = NULL;
if (mirror_count == 1)
return desc->pg_mirrors_static;
ret = kmalloc_array(mirror_count, sizeof(*ret), GFP_NOFS);
if (ret != NULL) {
for (i = 0; i < mirror_count; i++)
nfs_pageio_mirror_init(&ret[i], desc->pg_bsize);
desc->pg_mirrors_dynamic = ret;
}
return ret;
}
/*
* nfs_pageio_setup_mirroring - determine if mirroring is to be used
* by calling the pg_get_mirror_count op
*/
static int nfs_pageio_setup_mirroring(struct nfs_pageio_descriptor *pgio,
static void nfs_pageio_setup_mirroring(struct nfs_pageio_descriptor *pgio,
struct nfs_page *req)
{
int mirror_count = 1;
unsigned int mirror_count = 1;
if (!pgio->pg_ops->pg_get_mirror_count)
return 0;
if (pgio->pg_ops->pg_get_mirror_count)
mirror_count = pgio->pg_ops->pg_get_mirror_count(pgio, req);
if (mirror_count == pgio->pg_mirror_count || pgio->pg_error < 0)
return;
mirror_count = pgio->pg_ops->pg_get_mirror_count(pgio, req);
if (pgio->pg_error < 0)
return pgio->pg_error;
if (!mirror_count || mirror_count > NFS_PAGEIO_DESCRIPTOR_MIRROR_MAX)
return -EINVAL;
if (WARN_ON_ONCE(!pgio->pg_mirrors_dynamic))
return -EINVAL;
if (!mirror_count || mirror_count > NFS_PAGEIO_DESCRIPTOR_MIRROR_MAX) {
pgio->pg_error = -EINVAL;
return;
}
pgio->pg_mirrors = nfs_pageio_alloc_mirrors(pgio, mirror_count);
if (pgio->pg_mirrors == NULL) {
pgio->pg_error = -ENOMEM;
pgio->pg_mirrors = pgio->pg_mirrors_static;
mirror_count = 1;
}
pgio->pg_mirror_count = mirror_count;
return 0;
}
/*