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| author | David S. Miller <davem@davemloft.net> | 2014-01-14 14:37:09 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-01-14 14:42:42 -0800 |
| commit | 0a379e21c503b2ff66b44d588df9f231e9b0b9ca (patch) | |
| tree | 22b875fcf4b67fcd007726f00c5fc1748ce985d0 /mm/fremap.c | |
| parent | a49da8811e71c5355b52c65ee32976741d5834cd (diff) | |
| parent | fdc3452cd2c7b2bfe0f378f92123f4f9a98fa2bd (diff) | |
| download | linux-0a379e21c503b2ff66b44d588df9f231e9b0b9ca.tar.gz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Diffstat (limited to 'mm/fremap.c')
| -rw-r--r-- | mm/fremap.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/mm/fremap.c b/mm/fremap.c index 5bff08147768..bbc4d660221a 100644 --- a/mm/fremap.c +++ b/mm/fremap.c @@ -208,9 +208,10 @@ get_write_lock: if (mapping_cap_account_dirty(mapping)) { unsigned long addr; struct file *file = get_file(vma->vm_file); + /* mmap_region may free vma; grab the info now */ + vm_flags = vma->vm_flags; - addr = mmap_region(file, start, size, - vma->vm_flags, pgoff); + addr = mmap_region(file, start, size, vm_flags, pgoff); fput(file); if (IS_ERR_VALUE(addr)) { err = addr; @@ -218,7 +219,7 @@ get_write_lock: BUG_ON(addr != start); err = 0; } - goto out; + goto out_freed; } mutex_lock(&mapping->i_mmap_mutex); flush_dcache_mmap_lock(mapping); @@ -253,6 +254,7 @@ get_write_lock: out: if (vma) vm_flags = vma->vm_flags; +out_freed: if (likely(!has_write_lock)) up_read(&mm->mmap_sem); else |