summaryrefslogtreecommitdiffstats
path: root/include/trace
diff options
context:
space:
mode:
authorJan Kara <jack@suse.cz>2017-11-01 16:36:42 +0100
committerDan Williams <dan.j.williams@intel.com>2017-11-03 14:26:25 +0100
commitcaa51d26f85c248f1c4f43a870ad3ef84bf9eb8f (patch)
tree1949315570cf10dc95ebf1dde715cc1abaf81a2f /include/trace
parentmm: Define MAP_SYNC and VM_SYNC flags (diff)
downloadlinux-caa51d26f85c248f1c4f43a870ad3ef84bf9eb8f.tar.xz
linux-caa51d26f85c248f1c4f43a870ad3ef84bf9eb8f.zip
dax, iomap: Add support for synchronous faults
Add a flag to iomap interface informing the caller that inode needs fdstasync(2) for returned extent to become persistent and use it in DAX fault code so that we don't map such extents into page tables immediately. Instead we propagate the information that fdatasync(2) is necessary from dax_iomap_fault() with a new VM_FAULT_NEEDDSYNC flag. Filesystem fault handler is then responsible for calling fdatasync(2) and inserting pfn into page tables. Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'include/trace')
0 files changed, 0 insertions, 0 deletions