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authorMiklos Szeredi <mszeredi@suse.cz>2010-07-12 14:41:40 +0200
committerMiklos Szeredi <mszeredi@suse.cz>2010-07-12 14:41:40 +0200
commit7909b1c64078087ac153fb47a2f50793fe3ee7d0 (patch)
tree83367ca6286f3ebfee8b94533152848e7529e9fb /fs/fuse/file.c
parentLinux 2.6.35-rc4 (diff)
downloadlinux-7909b1c64078087ac153fb47a2f50793fe3ee7d0.tar.xz
linux-7909b1c64078087ac153fb47a2f50793fe3ee7d0.zip
fuse: don't use atomic kmap
Don't use atomic kmap for mapping userspace buffers in device read/write/splice. This is necessary because the next patch (adding store notify) requires that caller of fuse_copy_page() may sleep between invocations. The simplest way to ensure this is to change the atomic kmaps to non-atomic ones. Thankfully architectures where kmap() is not a no-op are going out of fashion, so we can ignore the (probably negligible) performance impact of this change. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Diffstat (limited to 'fs/fuse/file.c')
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