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author | Ingo Molnar <mingo@kernel.org> | 2015-03-13 16:20:46 +0300 |
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committer | Ingo Molnar <mingo@kernel.org> | 2015-03-13 16:21:04 +0300 |
commit | 56544d29c3a0e383c0d819fefc9570b2803db193 (patch) | |
tree | 4366fc0ba3f5115b8c1c9d171fa245d86e5415d0 /Documentation/nommu-mmap.txt | |
parent | 9261dc1de11e158a5f6b4b92c8bf1ef4a02dbf0d (diff) | |
parent | 9eccca0843205f87c00404b663188b88eb248051 (diff) | |
download | linux-56544d29c3a0e383c0d819fefc9570b2803db193.tar.xz |
Merge tag 'v4.0-rc3' into x86/build, to refresh an older tree before applying new changes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'Documentation/nommu-mmap.txt')
-rw-r--r-- | Documentation/nommu-mmap.txt | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/Documentation/nommu-mmap.txt b/Documentation/nommu-mmap.txt index 8e1ddec2c78a..ae57b9ea0d41 100644 --- a/Documentation/nommu-mmap.txt +++ b/Documentation/nommu-mmap.txt @@ -43,12 +43,12 @@ and it's also much more restricted in the latter case: even if this was created by another process. - If possible, the file mapping will be directly on the backing device - if the backing device has the BDI_CAP_MAP_DIRECT capability and + if the backing device has the NOMMU_MAP_DIRECT capability and appropriate mapping protection capabilities. Ramfs, romfs, cramfs and mtd might all permit this. - If the backing device device can't or won't permit direct sharing, - but does have the BDI_CAP_MAP_COPY capability, then a copy of the + but does have the NOMMU_MAP_COPY capability, then a copy of the appropriate bit of the file will be read into a contiguous bit of memory and any extraneous space beyond the EOF will be cleared @@ -220,7 +220,7 @@ directly (can't be copied). The file->f_op->mmap() operation will be called to actually inaugurate the mapping. It can be rejected at that point. Returning the ENOSYS error will -cause the mapping to be copied instead if BDI_CAP_MAP_COPY is specified. +cause the mapping to be copied instead if NOMMU_MAP_COPY is specified. The vm_ops->close() routine will be invoked when the last mapping on a chardev is removed. An existing mapping will be shared, partially or not, if possible @@ -232,7 +232,7 @@ want to handle it, despite the fact it's got an operation. For instance, it might try directing the call to a secondary driver which turns out not to implement it. Such is the case for the framebuffer driver which attempts to direct the call to the device-specific driver. Under such circumstances, the -mapping request will be rejected if BDI_CAP_MAP_COPY is not specified, and a +mapping request will be rejected if NOMMU_MAP_COPY is not specified, and a copy mapped otherwise. IMPORTANT NOTE: |