diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2012-01-07 11:51:28 +0000 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2012-01-07 11:51:28 +0000 |
| commit | 40ba95fdf158713377d47736b1b3a9d75f4f2515 (patch) | |
| tree | 17a3216542d1107f777fd82577c91aebbce597d6 /fs/ext4/page-io.c | |
| parent | 70d84a6431d732cbc4e68e72b6890cdd3865d43d (diff) | |
| parent | 0575fb754dbfc32a01f297e778533340a533ec68 (diff) | |
Merge branch 'depends/rmk/restart' into next/cleanup
Conflicts:
arch/arm/mach-at91/at91cap9.c
arch/arm/mach-at91/at91sam9260.c
arch/arm/mach-at91/at91sam9261.c
arch/arm/mach-at91/at91sam9263.c
arch/arm/mach-at91/at91sam9g45.c
arch/arm/mach-at91/at91sam9rl.c
arch/arm/mach-exynos/cpu.c
arch/arm/mach-shmobile/board-kota2.c
This resolves a bunch of conflicts between the arm-soc tree
and changes from the arm tree that have gone upstream.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'fs/ext4/page-io.c')
| -rw-r--r-- | fs/ext4/page-io.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c index 7ce1d0b19c94..7e106c810c62 100644 --- a/fs/ext4/page-io.c +++ b/fs/ext4/page-io.c @@ -385,6 +385,18 @@ int ext4_bio_write_page(struct ext4_io_submit *io, block_end = block_start + blocksize; if (block_start >= len) { + /* + * Comments copied from block_write_full_page_endio: + * + * The page straddles i_size. It must be zeroed out on + * each and every writepage invocation because it may + * be mmapped. "A file is mapped in multiples of the + * page size. For a file that is not a multiple of + * the page size, the remaining memory is zeroed when + * mapped, and writes to that region are not written + * out to the file." + */ + zero_user_segment(page, block_start, block_end); clear_buffer_dirty(bh); set_buffer_uptodate(bh); continue; |